ORCID Profile
0000-0001-9561-4918
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Chemical Engineering | Functional Materials | Materials Engineering | Nanotechnology | Environmental Technologies | Catalytic Process Engineering | Composite and Hybrid Materials | Chemical Engineering Not Elsewhere Classified | Chemical Engineering Design | Nanotechnology | Chemistry Of Catalysis | Physical Chemistry (Incl. Structural) | Colloid And Surface Chemistry | Nanomaterials | Energy Generation, Conversion and Storage Engineering | Chemical Engineering Design | Environmental Technologies | Water Treatment Processes | Powder and Particle Technology | Metals and Alloy Materials | Solid State Chemistry | Environmental Engineering | Nanoscale Characterisation | Process Control And Simulation | Membrane And Separation Technologies | Nanomaterials | Pharmaceutical Sciences And Pharmacy | Catalysis and Mechanisms of Reactions | Solid State Chemistry | Environmental Chemistry (Incl. Atmospheric Chemistry) | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Food Packaging, Preservation and Safety | Food Processing | Structural Chemistry | Chemical Spectroscopy | Biochemistry and Cell Biology | Condensed Matter Physics | Carbon Capture Engineering (excl. Sequestration) | Sensor Technology (Chemical aspects) | Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels) | Optical Physics Not Elsewhere Classified | Functional materials | Carbon capture engineering (excl. sequestration) | Other Chemical Sciences | Environmental Biotechnology | Compound Semiconductors | Protein Targeting And Signal Transduction | Polymers and Plastics | Membrane Biology | Engineering/Technology Instrumentation | Medical Biotechnology Diagnostics (incl. Biosensors) | Electrochemical energy storage and conversion | Water Quality Engineering | Structural Engineering | Civil Engineering | Food Sciences | Nanophotonics | Nanomanufacturing | Materials Engineering Not Elsewhere Classified | Industrial Biotechnology Diagnostics (incl. Biosensors) | Nanofabrication, Growth and Self Assembly | Renewable Power and Energy Systems Engineering (excl. Solar Cells) | Materials engineering | Physical Chemistry of Materials | Synthesis of Materials | Respiratory Diseases | Photodetectors, Optical Sensors and Solar Cells | Theory and Design of Materials | Nanotechnology | Ore Deposit Petrology | Resources Engineering and Extractive Metallurgy | Mechanical Engineering | Mineral Processing | Petroleum and Reservoir Engineering | Pharmacology and Pharmaceutical Sciences | Macromolecular and Materials Chemistry | Biomaterials | Biotechnology Not Elsewhere Classified | Environmental Engineering Design | Other Instrumental Methods | Bio-Remediation | Structural Chemistry and Spectroscopy | Construction Engineering | Chemical Engineering not elsewhere classified | Carbon Sequestration Science | Water And Sanitary Engineering | Carbon sequestration science | Surfaces and Structural Properties of Condensed Matter | Condensed Matter Characterisation Technique Development
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in Engineering | Hydrogen Production from Renewable Energy | Renewable Energy not elsewhere classified | Industrial chemicals and related products | Energy transformation not elsewhere classified | Air quality | Chemical sciences | Environmentally Sustainable Energy Activities not elsewhere classified | Renewable energy | Expanding Knowledge in the Physical Sciences | Energy Storage, Distribution and Supply not elsewhere classified | Other | Hydrogen Storage | Solar-Photovoltaic Energy | Environmental health | Public health not elsewhere classified | Other | Management of Greenhouse Gas Emissions from Energy Activities (excl. Electricity Generation) | Solar-photoelectric | Biological sciences | Renewable energy not elsewhere classified (e.g. geothermal) | Integrated Circuits and Devices | Prevention and treatment of pollution | Diagnostic methods | Expanding Knowledge in Technology | First stage treatment of ores and minerals | Transport | Oil and gas | Fibre processing and textiles; footwear and leather products | Processed food products and beverages | Air transport | Climate change | Land and water management | Waste management | Management of Gaseous Waste from Manufacturing Activities (excl. Greenhouse Gases) | Health not elsewhere classified | Ceramics | Beverages (e.g. alcohol, wines, soft drinks, excl. fruit juices) | Urban and Industrial Air Quality | Structural glass and glass products | Other | Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified | Land and Water Management of environments not elsewhere classified | Biofuel (Biomass) Energy | Human pharmaceutical products | Cement and concrete materials | Computer hardware and electronic equipment | Energy Conservation and Efficiency not elsewhere classified | Solar-thermal electric | Management of Gaseous Waste from Energy Activities (excl. Greenhouse Gases) | Management of Greenhouse Gas Emissions from Electricity Generation | Materials performance and processes | Earth sciences | Physical sciences | Hydrogen Distribution | Energy Storage (excl. Hydrogen) | Clinical health not specific to particular organs, diseases and conditions | Respiratory system and diseases (incl. asthma) | Diagnostics | Manufactured products not elsewhere classified | Treatments (e.g. chemicals, antibiotics) | Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified | Inorganic industrial chemicals | Energy Transformation not elsewhere classified | Plastic products (incl. Construction materials) | Energy storage and distribution | Conservation and efficiency | Polymeric Materials (e.g. Paints) | Energy transformation | Gas—conversion to liquid fuels | Transformation of Gas into Liquid Fuels | Processed Fruit and Vegetable Products (incl. Fruit Juices) | Industrial instrumentation | Other | Scientific instrumentation | Expanding Knowledge in the Environmental Sciences | Industrial Chemicals and Related Products not elsewhere classified | Pulp and paper | Electricity, gas and water services and utilities |
Related Links
Publications
Pt-V2O5-WO3/TiO2 catalysts supported on SiC filter for NO reduction at low temperature
Publisher: Springer Science and Business Media LLC
Date: 11-2005
DOI: 10.1007/BF02705663
Photocatalytic Overall Water Splitting over ALi2Ti6O14(A: 2Na and Sr) with Tunneling Structure
Publisher: The Chemical Society of Japan
Date: 05-01-2011
DOI: 10.1246/CL.2011.108
Exploring the Different Roles of Particle Size in Photoelectrochemical and Photocatalytic Water Oxidation on BiVO4
Publisher: American Chemical Society (ACS)
Date: 11-10-2016
Abstract: Water oxidation on visible-light-active bismuth vanadate (BiVO
Accelerating Electron‐Transfer and Tuning Product Selectivity Through Surficial Vacancy Engineering on CZTS/CdS for Photoelectrochemical CO2 Reduction
Publisher: Wiley
Date: 25-06-2021
Abstract: Copper‐based chalcogenides have been considered as potential photocathode materials for photoelectrochemical (PEC) CO 2 reduction due to their excellent photovoltaic performance and favorable conduction band alignment with the CO 2 reduction potential. However, they suffer from low PEC efficiency due to the sluggish charge transfer kinetics and poor selectivity, resulting from random CO 2 reduction reaction pathways. Herein, a facile heat treatment (HT) of a Cu 2 ZnSnS 4 (CZTS)/CdS photocathode is demonstrated to enable significant improvement in the photocurrent density (−0.75 mA cm −2 at −0.6 V vs RHE), tripling that of pristine CZTS, as a result of the enhanced charge transfer and promoted band alignment originating from the elemental inter‐diffusion at the CZTS/CdS interface. In addition, rationally regulated CO 2 reduction selectivity toward CO or alcohols can be obtained by tailoring the surficial sulfur vacancies by HT in different atmospheres (air and nitrogen). Sulfur vacancies replenished by O‐doping is shown to favor CO adsorption and the CC coupling pathway, and thereby produce methanol and ethanol, whilst the CdS surface with more S vacancies promotes CO desorption capability with higher selectivity toward CO. The strategy in this work rationalizes the interface charge transfer optimization and surface vacancy engineering simultaneously, providing a new insight into PEC CO 2 reduction photocathode design.
Exploring Cu oxidation state on TiO2 and its transformation during photocatalytic hydrogen evolution
Publisher: Elsevier BV
Date: 07-2016
Pulsed electrodeposition of CdS on ZnO nanorods for highly sensitive photoelectrochemical sensing of copper (II) ions
Publisher: Elsevier BV
Date: 12-2018
Removal of humic acid using TiO2 photocatalytic process – Fractionation and molecular weight characterisation studies
Publisher: Elsevier BV
Date: 05-2008
DOI: 10.1016/J.CHEMOSPHERE.2008.01.061
Abstract: The photocatalytic removal of humic acid (HA) using TiO2 under UVA irradiation was examined by monitoring changes in the UV(254) absorbance, dissolved organic carbon (DOC) concentration, apparent molecular weight distribution, and trihalomethane formation potentials (THMFPs) over treatment time. A resin fractionation technique in which the s les were fractionated into four components: very hydrophobic acids (VHA), slightly hydrophobic acids, hydrophilic charged (CHA) and hydrophilic neutral (NEU) was also employed to elucidate the changes in the chemical nature of the HA components during treatment. The UVA/TiO2 process was found to be effective in removing more than 80% DOC and 90% UV(254) absorbance. The THMFPs of s les were decreased to below 20 microg l(-1) after treatments, which demonstrate the potential to meet increasingly stringent regulatory level of trihalomethanes in water. Resin fractionation analysis showed that the VHA fraction was decreased considerably as a result of photocatalytic treatments, forming CHA intermediates which were further degraded with increased irradiation time. The NEU fraction, which comprised of non-UV-absorbing low molecular weight compounds, was found to be the most persistent component.
Electrodeposited Cu2 O as Photoelectrodes with Controllable Conductivity Type for Solar Energy Conversion
Publisher: American Chemical Society (ACS)
Date: 13-11-2015
An Operando Mechanistic Evaluation of a Solar-Rechargeable Sodium-Ion Intercalation Battery
Publisher: Wiley
Date: 03-07-2017
Techno-economic Analysis of Hydrogen Electrolysis from Off-Grid Stand-Alone Photovoltaics Incorporating Uncertainty Analysis
Publisher: Elsevier BV
Date: 10-2020
Revealing the key oxidative species generated by Pt-loaded metal oxides under dark and light conditions
Publisher: Elsevier BV
Date: 04-2018
Industrial carbon dioxide capture and utilization: state of the art and future challenges
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CS00025F
Abstract: This review covers the sustainable development of advanced improvements in CO 2 capture and utilization.
Atomic Co decorated free-standing graphene electrode assembly for efficient hydrogen peroxide production in acid
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1EE02884G
Abstract: A novel oxygen reduction reaction (ORR) electrode comprising isolated Co atom decorated vertically aligned graphene nanosheets is designed, which can enable the most energy-efficient, rapid acidic H 2 O 2 production in a flow-cell reactor.
Promoting Catalytic Oxygen Activation by Localized Surface Plasmon Resonance: Effect of Visible Light Pre‐treatment and Bimetallic Interactions
Publisher: Wiley
Date: 20-12-2017
Improved carrier dynamics in nickel/urea-functionalized carbon nitride for ethanol photoreforming
Publisher: Springer Science and Business Media LLC
Date: 07-08-2022
DOI: 10.1007/S43630-022-00282-4
Abstract: Photoreforming has been shown to accelerate the H 2 evolution rate compared to water splitting due to thermodynamically favorable organic oxidation. In addition, the potential to simultaneously produce solar fuel and value-added chemicals is a significant benefit of photoreforming. To achieve an efficient and economically viable photoreforming process, the selection and design of an appropriate photocatalyst is essential. Carbon nitride is promising as a metal-free photocatalyst with visible light activity, high stability, and low fabrication cost. However, it typically exhibits poor photogenerated charge carrier dynamics, thereby resulting in low photocatalytic performance. Herein, we demonstrate improved carrier dynamics in urea-functionalized carbon nitride with in situ photodeposited Ni cocatalyst (Ni/Urea-CN) for ethanol photoreforming. In the presence of 1 mM Ni 2+ precursor, an H 2 evolution rate of 760.5 µmol h −1 g −1 and an acetaldehyde production rate of 888.2 µmol h −1 g −1 were obtained for Ni/Urea-CN. The enhanced activity is ascribed to the significantly improved carrier dynamics in Urea-CN. The ability of oxygen moieties in the urea group to attract electrons and to increase the hole mobility via a positive shift in the valence band promotes an improvement in the overall carrier dynamics. In addition, high crystallinity and specific surface area of the Urea-CN contributed to accelerating charge separation and transfer. As a result, the electrons were efficiently transferred from Urea-CN to the Ni cocatalyst for H 2 evolution while the holes were consumed during ethanol oxidation. The work demonstrates a means by which carrier dynamics can be tuned by engineering carbon nitride via edge functionalization. Graphical abstract
Unlocking high-potential non-persistent radical chemistry for semi-aqueous redox batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8CC09304K
Abstract: Stabilizing non-persistent radical opens the gate to low-cost high-potential cathode for all-organic aqueous redox batteries with fast reversible rate capability.
In vitro coronal protein signatures and biological impact of silver nanoparticles synthesized with different natural polymers as capping agents
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0NA01013H
Abstract: Biopolymer-capped silver nanoparticle synthesis. Compositional and stability analysis of synthesised particles. Proteomic analysis of particles following serum exposure. In vitro hemolytic assays. Organ distribution following administration in mice.
Inducing Ni phyllosilicate formation over a carbon fiber support as a catalyst for the CO2 reforming of methane
Publisher: Elsevier BV
Date: 02-2020
Z-Schematic Solar Water Splitting Using Fine Particles of H2-Evolving (CuGa)0.5ZnS2 Photocatalyst Prepared by a Flux Method with Chloride Salts
Publisher: American Chemical Society (ACS)
Date: 26-05-2020
Exploring the effects of heat and UV exposure on glycerol-based Ag-SiO2 nanofluids for PV/T applications
Publisher: Elsevier BV
Date: 05-2018
A framework for assessing economics of blue hydrogen production from steam methane reforming using carbon capture storage & utilisation
Publisher: Elsevier BV
Date: 06-2021
Characterization of large fractal aggregates by small-angle light scattering
Publisher: IOP Publishing
Date: 08-02-2002
Advancing photoreforming of organics: highlights on photocatalyst and system designs for selective oxidation reactions
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE03116J
Abstract: This review appraises recent literature and provides guidelines for the rational design of photocatalytic system for selective photoreforming reaction.
Relationship between Floc Short Range Structure and Sediment Compaction
Publisher: Wiley
Date: 11-2003
An Aqueous Metal-Ion Capacitor with Oxidized Carbon Nanotubes and Metallic Zinc Electrodes
Publisher: Frontiers Media SA
Date: 03-10-2016
Unifying double flame spray pyrolysis with lanthanum doping to restrict cobalt–aluminate formation in Co/Al2O3 catalysts for the dry reforming of methane
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CY01293A
Abstract: Atomic-sized lanthanum doping via double flame spray pyrolysis leads to remarkable dry reforming of methane performance.
Flame‐Synthesized Ceria‐Supported Copper Dimers for Preferential Oxidation of CO
Publisher: Wiley
Date: 02-02-2009
Charge transport in dye-sensitized solar cells based on flame-made TiO 2 nanoparticles
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2010
Tuning Phase Composition of TiO2 by Sn4+ Doping for Efficient Photocatalytic Hydrogen Generation
Publisher: American Chemical Society (ACS)
Date: 21-10-2015
Abstract: The anatase-rutile mixed-phase photocatalysts have attracted extensive research interest because of the superior activity compared to their single phase counterparts. In this study, doping of Sn(4+) ions into the lattice of TiO2 facilitates the phase transformation from anatase to rutile at a lower temperature while maintaining the same crystal sizes compared to the conventional annealling approach. The mass ratios between anatase and rutile phases can be easily manipulated by varying the Sn-dopant content. Characterization results reveal that the Sn(4+) ions entered into the lattice of TiO2 by substituting some of the Ti(4+) ions and distributed evenly in the matrix of TiO2. The substitution induced the distortion of the lattice structure, which realized the phase transformation from anatase to rutile at a lower temperature and the close-contact phase junctions were consequently formed between anatase and rutile, accounting for the efficient charge separations. The mixed-phase catalysts prepared by doping Sn(4+) ions into the TiO2 exhibit superior activity for photocatalytic hydrogen generation in the presence of Au nanoparticles, relatively to their counterparts prepared by the conventional annealling at higher temperatures. The band allignment between anatase and rutile phases is established based on the valence band X-ray photoelectron spectra and diffuse reflectance spectra to understand the spatial charge separation process at the heterojunction between the two phases. The study provides a new route for the synthesis of mixed-phase TiO2 catalysts for photocatalytic applications and advances the understanding on the enhanced photocatalytic properties of anatase-rutile mixtures.
Concentration-Mediated Band Gap Reduction of Bi2 MoO6 Photoanodes Prepared by Bi3+ Cation Insertions into Anodized MoO3 Thin Films: Structural, Optical, and Photoelectrochemical Properties
Publisher: American Chemical Society (ACS)
Date: 12-07-2018
Plasmacatalytic bubbles using CeO2 for organic pollutant degradation
Publisher: Elsevier BV
Date: 2021
Flame spray pyrolysis: An enabling technology for nanoparticles design and fabrication
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0NR00017E
Abstract: Combustion of appropriate precursor sprays in a flame spray pyrolysis (FSP) process is a highly promising and versatile technique for the rapid and scalable synthesis of nanostuctural materials with engineered functionalities. The technique was initially derived from the fundamentals of the well-established vapour-fed flame aerosols reactors that was widely practised for the manufacturing of simple commodity powders such as pigmentary titania, fumed silica, alumina, and even optical fibers. In the last 10 years however, FSP knowledge and technology was developed substantially and a wide range of new and complex products have been synthesised, attracting major industries in a erse field of applications. Key innovations in FSP reactor engineering and precursor chemistry have enabled flexible designs of nanostructured loosely-agglomerated powders and particulate films of pure or mixed oxides and even pure metals and alloys. Unique material morphologies such as core-shell structures and nanorods are possible using this essentially one step and continuous FSP process. Finally, research challenges are discussed and an outlook on the next generation of engineered combustion-made materials is given.
Transparent visible light activated C–N–F-codoped TiO2 films for self-cleaning applications
Publisher: Elsevier BV
Date: 02-2010
Effect of copper(II) on the photocatalytic degradation of sucrose
Publisher: Elsevier BV
Date: 2002
Preparation of Bi-based photocatalysts in the form of powdered particles and thin films: a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA01180K
Abstract: A comprehensive survey on preparation methods of powdered or thin-film Bi-based photocatalysts is provided, comparing he erse approaches and their advantages and limitations in the context of photocatalytic and photoelectrochemical applications.
Spectroscopic Studies of Pristine and Fluorinated Nano-ZrO2 in Photostimulated Heterogeneous Processes
Publisher: American Chemical Society (ACS)
Date: 20-02-2009
DOI: 10.1021/JP809992G
Widespread and Indiscriminate Nanosilver Use: Genuine Potential for Microbial Resistance
Publisher: American Chemical Society (ACS)
Date: 24-03-2017
Abstract: In this era of increasing antibiotic resistance, the use of alternative antimicrobials such as silver has become more widespread. Superior antimicrobial activity has been provided through fabrication of silver nanoparticles or nanosilver (NAg), which imparts cytotoxic actions distinct from those of bulk silver. In the wake of the recent discoveries of bacterial resistance to NAg and its rising incorporation in medical and consumer goods such as wound dressings and dietary supplements, we argue that there is an urgent need to monitor the prevalence and spread of NAg microbial resistance. In this Perspective, we describe how the use of NAg in commercially available products facilitates prolonged microorganism exposure to bioavailable silver, which underpins the development of resistance. Furthermore, we advocate for a judicial approach toward NAg use in order to preserve its efficacy and to avoid environmental disruption.
Investigating the effect of UV light pre-treatment on the oxygen activation capacity of Au/TiO2
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CY01717G
Abstract: UV light pre-illumination-enhanced catalytic O 2 activation by Au/TiO 2 . Carbon hydrogen oxygen electron charge traps Au Au perimeter atom.
Effect of fulvic acid adsorption on the aggregation kinetics and structure of hematite particles
Publisher: Elsevier BV
Date: 06-1992
Structure and kinetics of aggregating colloidal haematite
Publisher: Elsevier BV
Date: 1990
Wrapping the walls of n-TiO 2 nanotubes with p-CuInS 2 nanoparticles using pulsed-electrodeposition for improved heterojunction photoelectrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC13738G
Abstract: The CuInS(2) (CIS) nanoparticles were wrapped uniformly throughout the inner and outer walls of TNTs (TNT) by using square wave pulsed-electrodeposition. This structure enables the CuInS(2)-TiO(2) (CIS-TNT) to exhibit p-n junction diode behavior and enhanced photoelectrochemical properties.
Degradation of sucrose and nitrate over titania coated nano-hematite photocatalysts
Publisher: Springer Science and Business Media LLC
Date: 2001
Intrinsic ORR Activity Enhancement of Pt Atomic Sites by Engineering the d‐Band Center via Local Coordination Tuning
Publisher: Wiley
Date: 26-08-2021
Abstract: A considerable amount of platinum (Pt) is required to ensure an adequate rate for the oxygen reduction reaction (ORR) in fuel cells and metal‐air batteries. Thus, the implementation of atomic Pt catalysts holds promise for minimizing the Pt content. In this contribution, atomic Pt sites with nitrogen (N) and phosphorus (P) co‐coordination on a carbon matrix (PtNPC) are conceptually predicted and experimentally developed to alter the d‐band center of Pt, thereby promoting the intrinsic ORR activity. PtNPC with a record‐low Pt content (≈0.026 wt %) consequently shows a benchmark‐comparable activity for ORR with an onset of 1.0 V RHE and half‐wave potential of 0.85 V RHE . It also features a high stability in 15 000‐cycle tests and a superior turnover frequency of 6.80 s −1 at 0.9 V RHE . Damjanovic kinetics analysis reveals a tuned ORR kinetics of PtNPC from a mixed 2/4‐electron to a predominately 4‐electron route. It is discovered that coordinated P species significantly shifts d‐band center of Pt atoms, accounting for the exceptional performance of PtNPC.
Assessment of ozone and UV pre-oxidation processes for mitigating microbiologically accelerated monochloramine decay
Publisher: Elsevier BV
Date: 02-2018
Origin and predictive principle for selective products of electrocatalytic carbon dioxide reduction
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA00336A
Abstract: A computational method, based on DFT and electrical double-layer interface models with explicit hydrogen bonding, is developed to accurately predict potential-dependent reaction pathways, catalytic activity, and product selectivity of CO 2 reduction.
TiO2-coated natural zeolite: Rapid humic acid adsorption and effective photocatalytic regeneration
Publisher: Elsevier BV
Date: 02-2014
In Situ Sulfurized Carbon-Confined Cobalt for Long-Life Mg/S Batteries
Publisher: American Chemical Society (ACS)
Date: 10-01-2020
Dynamic single-site polysulfide immobilization in long-range disorder Cu-MOFs
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC04001K
Abstract: The dynamic structural transformation of Cu-MOFs during cell discharge and recharge involves irreversible frame-work amorphization and interconvertible single copper cations.
The effect of common bacterial growth media on zinc oxide thin films: Identification of reaction products and implications for the toxicology of ZnO
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA46177G
Designing Optimal Integrated Electricity Supply Configurations for Renewable Hydrogen Generation in Australia
Publisher: Elsevier BV
Date: 2021
DOI: 10.2139/SSRN.3784951
Functionalization Strategies for Protease Immobilization on Magnetic Nanoparticles
Publisher: Wiley
Date: 31-05-2010
Nitrogen Doped Carbon Nanosheets Coupled Nickel-Carbon Pyramid Arrays Toward Efficient Evolution of Hydrogen
Publisher: Wiley
Date: 19-07-2017
Synthesis and characterization of transition metal ion doping on the photocatalytic activity of TiO2 nanoparticles
Publisher: IEEE
Date: 2008
Interface-dependent electrochemical behavior of nanostructured manganese (IV) oxide (Mn3O4)
Publisher: Elsevier BV
Date: 06-2014
Effect of cation intercalation on the growth of hexagonal WO 3 nanorods
Publisher: American Chemical Society (ACS)
Date: 17-05-2012
DOI: 10.1021/JP301210Q
Versatile electrocatalytic processes realized by Ni, Co and Fe alloyed core coordinated carbon shells
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA01723B
Abstract: Through encapsulation of Ni, Co and Fe alloyed core inside graphitic carbon shells, a versatile composite catalyst can be obtained that demonstrates excellent activity towards electrochemical energy conversion reactions.
Multifunctional nanostructures of Au–Bi2O3 fractals for CO2 reduction and optical sensing
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA01723J
Abstract: Three-dimensional (3D) fractal structure of Au–Bi 2 O 3 is fabricated and shows excellent multifunctional performance towards CO 2 reduction and optical gas sensing.
Two Steps Back, One Leap Forward: Synergistic Energy Conversion in Plasmonic and Plasma Catalysis
Publisher: American Chemical Society (ACS)
Date: 16-12-2022
An over 10% enhancement of dye-sensitized solar cell efficiency by tuning nanoparticle packing
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA42418A
Recent advances in suppressing the photocorrosion of cuprous oxide for photocatalytic and photoelectrochemical energy conversion
Publisher: Elsevier BV
Date: 09-2019
Production of formic acid from CO2 reduction by means of potassium borohydride at ambient conditions
Publisher: Elsevier BV
Date: 12-2015
Fabrication of high aspect ratio and open-ended TiO2 nanotube photocatalytic arrays through electrochemical anodization
Publisher: Wiley
Date: 31-12-2016
DOI: 10.1002/AIC.15117
Photocatalytic oxidation of organics in water using pure and silver-modified titanium dioxide particles
Publisher: Elsevier BV
Date: 05-2002
Solar hydrogen evolution using a CuGaS<inf>2</inf> photocathode improved by incorporating reduced graphene oxide
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA01237F
Abstract: A photoelectrochemical cell consisting of an enhanced RGO–CuGaS 2 composite photocathode and a CoO x -loaded BiVO 4 photoanode generated photocurrent under simulated sunlight irradiation without any external applied bias.
A mesoporous SiO2 intermediate layer for improving light propagation in a bundled tube photoreactor
Publisher: Elsevier BV
Date: 08-2011
Effects of serum adsorption on cellular uptake profile and consequent impact of titanium dioxide nanoparticles on human lung cell lines
Publisher: American Chemical Society (ACS)
Date: 02-05-2012
DOI: 10.1021/NN3004845
Abstract: Exposure to fetal bovine serum (FBS) is shown herein to reduce the aggregate size of titanium dioxide (TiO(2)) nanoparticles, affecting uptake and consequent effect on A549 and H1299 human lung cell lines. Initially, the cellular uptake of the FBS-treated TiO(2) was lower than that of non-FBS-treated TiO(2). Expulsion of particles was then observed, followed by a second phase of uptake of FBS-treated TiO(2), resulting in an increase in the cellular content of FBS-treated TiO(2), eventually exceeding the amount by cells exposed to non-FBS-treated TiO(2). Surface adsorbed vitronectin and the clathrin-mediated endocytosis pathway were shown to regulate the uptake of TiO(2) into A549 cells, while the endocytosis mechanism responsible remains elusive for H1299. Intriguingly, nystatin treatment was shown to have the unexpected effect of increasing nanoparticle uptake into the A549 cells via an alternate endocytic pathway. The surface adsorbed serum components were found to provide some protection from the cytotoxic effect of endocytosed TiO(2) nanoparticles.
In Situ Exsolution of Bimetallic Rh-Ni Nanoalloys: A Highly Efficient Catalyst for CO2 Methanation
Publisher: American Chemical Society (ACS)
Date: 09-03-2018
Abstract: Unique CO
Advancing MXene Electrocatalysts for Energy Conversion Reactions: Surface, Stoichiometry, and Stability
Publisher: Wiley
Date: 30-11-2022
Abstract: MXenes, due to their tailorable chemistry and favourable physical properties, have great promise in electrocatalytic energy conversion reactions. To exploit fully their enormous potential, further advances specific to electrocatalysis revolving around their performance, stability, compositional discovery and synthesis are required. The most recent advances in these aspects are discussed in detail: surface functional and stoichiometric modifications which can improve performance, Pourbaix stability related to their electrocatalytic operating conditions, density functional theory and advances in machine learning for their discovery, and prospects in large scale synthesis and solution processing techniques to produce membrane electrode assemblies and integrated electrodes. This Review provides a perspective that is complemented by new density functional theory calculations which show how these recent advances in MXene material design are paving the way for effective electrocatalysts required for the transition to integrated renewable energy systems.
Promising hollow multi-shelled structures: discovering the temporal-spatial ordering
Publisher: Oxford University Press (OUP)
Date: 03-06-2020
DOI: 10.1093/NSR/NWAA106
Photocatalytic reduction of selenite and selenate using TiO2 photocatalyst
Publisher: Elsevier BV
Date: 04-2005
Hybrid graphene/titania nanocomposite: Interface charge transfer, hole doping, and sensitization for visible light response
Publisher: American Chemical Society (ACS)
Date: 04-2011
DOI: 10.1021/JZ2002698
Abstract: We demonstrated for the first time by large-scale ab initio calculations that a graphene/titania interface in the ground electronic state forms a charge-transfer complex due to the large difference of work functions between graphene and titania, leading to substantial hole doping in graphene. Interestingly, electrons in the upper valence band can be directly excited from graphene to the conduction band, that is, the 3d orbitals of titania, under visible light irradiation. This should yield well-separated electron-hole pairs, with potentially high photocatalytic or photovoltaic performance in hybrid graphene and titania nanocomposites. Experimental wavelength-dependent photocurrent generation of the graphene/titania photoanode demonstrated noticeable visible light response and evidently verified our ab initio prediction.
Porous TiO2 with a controllable bimodal pore size distribution from natural ilmenite
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CE00533A
Solar Water Splitting under Neutral Conditions Using Z-Scheme Systems with Mo-Doped BiVO4 as an O2-Evolving Photocatalyst
Publisher: Wiley
Date: 30-05-2019
Photocatalysis of Natural Organic Matter in Water: Characterization and Treatment Integration
Publisher: Wiley
Date: 13-03-2013
Evidence of Shear Rate Dependence on Restructuring and Breakup of Latex Aggregates
Publisher: Elsevier BV
Date: 04-2001
Effect of adhesion on aggregation in nanoparticle dispersions
Publisher: Informa UK Limited
Date: 12-07-2007
Enhanced Electrochemical CO2 Reduction of Cu@CuxO Nanoparticles Decorated on 3D Vertical Graphene with Intrinsic sp3-type Defect
Publisher: Wiley
Date: 04-05-2020
Superhydrophilicity-assisted preparation of transparent and visible light activated N-doped titania film
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0NR00105H
Abstract: A novel and environmental friendly method was developed to prepare transparent, uniform, crack-free and visible light activated nitrogen doped (N-doped) titania thin films without the use of organic Ti precursors and organic solvents. The N-doped titania films were prepared from heating aqueous peroxotitanate thin films deposited uniformly on superhydrophilic uncoated glass substrates. The pure glass substrates were superhydrophilic after being heated at 500 degrees C for 1 h. Nitrogen concentrations in the titania films were adjusted by changing the amount of ammonia solution. The optimal photocatalytic activity of the N-doped titania films was about 14 times higher than that of a commercial self-cleaning glass under the same visible light illumination. The current reported preparative technique is generally applicable for the preparation of other thin films.
Interfacing BiVO4 with Reduced Graphene Oxide for Enhanced Photoactivity: A Tale of Facet Dependence of Electron Shuttling
Publisher: Wiley
Date: 21-07-2016
Abstract: Efficient interfacial charge transfer is essential in graphene-based semiconductors to realize their superior photoactivity. However, little is known about the factors (for ex le, semiconductor morphology) governing the charge interaction. Here, it is demonstrated that the electron transfer efficacy in reduced graphene oxide-bismuth oxide (RGO/BiVO
Polyethylenimine based magnetic iron-oxide vector: The effect of vector component assembly on cellular entry mechanism, intracellular localization, and cellular viability
Publisher: American Chemical Society (ACS)
Date: 16-08-2010
DOI: 10.1021/BM100748P
Abstract: The order of assembly of a magnetic nanoparticle (MNP) vector comprised of the same components (MNP, PEI, and plasmid DNA) on entry mechanism, intracellular localization, and viability of BHK21 cells was investigated. Cellular uptake measurements under four different uptake inhibiting conditions, such as low temperature, depleted cellular ATP, nystatin treatment, and hypertonic environment, show that the cellular entry mechanism of the MNP vector was mediated via clathrin endocytosis. Despite different vector component assembly, all MNP vectors were taken up by the cells through the same mechanism. Labeling and intracellular tracking of the MNP vectors using epi-fluorescence and confocal laser scanning microscopy showed localization of MNP vector within the lysosomes when DNA was assembled on the outer layer of vector. Conversely, when PEI was on the surface of the vector, such that it enclosed both magnetic nanoparticles and the DNA, vector localization in the cell nucleus was observed. The microscopy results demonstrated that the configuration of the MNP vectors dictate the vector's final intracellular target location, and thus the efficiency of transfection. The cellular viability assessment using three different assays further showed that the cellular viability of MNP vector was dose-dependent and varied with the assembly of vector component. All viability assays found negligible toxicity when DNA was on the outer layer of MNP vector except at the highest vector loading. In contrast, attachment of PEI on MNP vector surface induced a significant decrease in cellular viability, due to the ability of PEI on the MNP vector to rupture the lysosomal vesicles.
Understanding the Formation of Iron Oxide Nanoparticles with Acicular Structure from Iron(III) Chloride and Hydrazine Monohydrate
Publisher: American Chemical Society (ACS)
Date: 17-03-2011
DOI: 10.1021/CG101623N
Enhancing the Photoactivity of Faceted BiVO4 via Annealing in Oxygen‐Deficient Condition
Publisher: Wiley
Date: 23-12-2016
Fractal Aggregates of Polydisperse Particles
Publisher: Elsevier BV
Date: 09-1998
Abstract: In this work we examine structural effects of particle polydispersity on fractal aggregates by performing DLCA simulations with multiple primary particle sizes. We show that the fractal structure and the form of the cutoff function that describes the gross shape of the aggregates is unaffected by the details of the primary particle size distribution. The scattering behavior is evaluated in terms of partial structure factors, and depending on the details of primary particle size distribution and contrast, the scattering curve can deviate significantly from the typical q-Df behavior at the high q end of the spectrum. We also develop an expression for average primary particle size that allows the calculation of aggregate solid volume fraction for fractal aggregates with polydisperse primary particles. Copyright 1998 Academic Press.
Stabilizing the Unstable: Chromium Coating on NiMo Electrode for Enhanced Stability in Intermittent Water Electrolysis
Publisher: American Chemical Society (ACS)
Date: 29-08-2022
Abstract: Hydrogen production through water electrolysis is a promising method to utilize renewable energy in the context of urgent need to phase out fossil fuels. Nickel-molybdenum (NiMo) electrodes are among the best performing non-noble metal-based electrodes for hydrogen evolution reaction in alkaline media (alkaline HER). Albeit exhibiting stable performance in electrolysis at a constant power supply (i.e., constant electrolysis), NiMo electrodes suffer from performance degradation in electrolysis at an intermittent power supply (i.e., intermittent electrolysis), which is emblematic of electrolysis powered directly by renewable energy (such as wind and solar power sources). Here we reveal that NiMo electrodes were oxidized by dissolved oxygen during power interruption, leading to vanishing of metallic Ni active sites and loss of conductivity in MoO
Highly adsorptive and regenerative magnetic TiO2 for natural organic matter (NOM) removal in water
Publisher: Elsevier BV
Date: 06-2014
'Dispersible electrodes': A solution to slow response times of sensitive sensors
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CC02690E
Abstract: Herein, we introduce the concept of utilizing conductive gold-coated magnetic nanoparticles as 'dispersible electrodes', which serve as the active element in the selective capture and direct electro-analytical quantification of analytes. This concept reduces response times and decreases detection limits by bringing the sensor to the analyte rather than the conventional paradigm of the analyte finding the sensor.
Reducing graphene oxide on a visible-light BiVO4 photocatalyst for an enhanced photoelectrochemical water splitting
Publisher: American Chemical Society (ACS)
Date: 17-08-2010
DOI: 10.1021/JZ100978U
Differentiating the Impacts of Cu2O Initial Low‐ and High‐Index Facets on Their Reconstruction and Catalytic Performance in Electrochemical CO2 Reduction Reaction
Publisher: Wiley
Date: 2023
Abstract: Oxide‐derived Cu catalysts from Cu 2 O microcrystals are capable of electrochemically converting CO 2 into various value‐added chemicals. However, their structural transformation and associated preferred products remain unclear, requiring further investigation. Herein, Cu 2 O microcrystals with controllable low‐ and high‐index facets exposure are fabricated to differentiate the effects of initial exposed facets on their structural reconstruction and product selectivity in electrochemical CO 2 reduction reaction. Combined in situ characterizations and theoretical investigation reveal the direct correlations of Cu 2 O reconstruction and product selectivity to its initial facet exposure. The Cu 2 O low‐index facet, being more stable with a high energy barrier on material reduction, tends to partially maintain its original crystalline structure and larger Cu 2 O particle size throughout the transformation. The derived flatter surface and limited Cu 2 O/Cu interfaces result in a favorable selectivity toward 2‐electron transfer products. The chemically active Cu 2 O high‐index facet (311) is energetically favorable to be reduced owing to the feasible protonation process, thus experiencing a drastic reconstruction with rich newly formed Cu nanoparticles and evolved fine Cu 2 O grains Such a reconstruction creates uncoordinated Cu species and abundant boundaries, benefiting charge transfer and increasing the local pH by confining OH − , thus leading to a high selectivity toward C 2+ products.
Wafer-scale quasi-layered tungstate-doped polypyrrole film with high volumetric capacitance
Publisher: Springer Science and Business Media LLC
Date: 12-08-2021
Developing a chloramine decay index to understand nitrification: A case study of two chloraminated drinking water distribution systems
Publisher: Elsevier BV
Date: 07-2016
DOI: 10.1016/J.JES.2016.11.007
Abstract: The management of chloramine decay and the prevention of nitrification are some of the critical issues faced by water utilities that use chloramine as a disinfectant. In this study, potential association between high performance size exclusion chromatography (HPSEC) data obtained with multiple wavelength Ultraviolet (UV) detection from two drinking water distribution systems in Australia and nitrification occurrence was investigated. An increase in the absorbance signal of HPSEC profiles with UV detection at λ=230nm between apparent molecular weights of 200 to 1000Da was observed at s ling sites that experienced rapid chloramine decay and nitrification while its absorbance signal at λ=254nm decreased. A chloramine decay index (C.D.I) defined as the ratio of area beneath the HPSEC spectra at two different wavelengths of 230 and 254nm, was used in assessing chloramine decay occurrences. The C.D.Is of waters at locations that experienced nitrification were consistently higher than locations not experiencing nitrification. A simulated laboratory study showed that the formation of nitrite/nitrate and/or soluble microbial products and/or the release of extracellular polymeric substances (EPS) during nitrification may contribute to the C.D.I. increase. These findings suggest that C.D.I derived from HPSEC with multiple wavelength UV detection could be an informative index to track the occurrence of rapid chloramine decay and nitrification.
Evaluating the applicability of regulatory leaching tests for assessing the hazards of Pb-contaminated soils
Publisher: Elsevier BV
Date: 04-2005
DOI: 10.1016/J.JHAZMAT.2004.12.039
Abstract: Soil contamination is a major environmental problem due to the ecological threat it poses. In this work, electron probe microanalysis (EPMA), X-ray diffraction (XRD), and leaching studies were employed to explain the different leaching behaviors of non-stabilized and stabilized soils. The applicability of the leaching fluids used in the toxicity characteristic leaching procedure (TCLP) and Australian Standards, AS 4439.1-1997 for assessing the hazards of contaminated soils was investigated as was the leaching of lead from soil stabilized by cement and buffered phosphate techniques. The results showed Pb speciation in the soil highly influenced metal leaching. The synthetic leaching fluids were unable to provide a reliable estimation of Pb concentration in the municipal landfill leachate (ML) due to the absence of organic ligands capable of forming stable complexes with the lead. Water provided the closest representation of lead leaching from the non-stabilized and phosphate stabilized soils while sodium tetraborate buffer was found to be suitable for cement-stabilized soil in a non-putrescible landfill leachate system. A comparison of stabilization methods revealed that the buffered phosphate technique was more suitable for stabilizing the lead in the soil relative to cement stabilization.
Defective Metal Oxides: Lessons from CO2RR and Applications in NOxRR
Publisher: Wiley
Date: 07-06-2023
Abstract: Sluggish reaction kinetics and the undesired side reactions (hydrogen evolution reaction and self‐reduction) are the main bottlenecks of electrochemical conversion reactions, such as the carbon dioxide and nitrate reduction reactions (CO 2 RR and NO 3 RR). To date, conventional strategies to overcome these challenges involve electronic structure modification and modulation of the charge‐transfer behavior. Nonetheless, key aspects of surface modification, focused on boosting the intrinsic activity of active sites on the catalyst surface, are yet to be fully understood. Engingeering of oxygen vacancies (OVs) can tune surface/bulk electronic structure and improve surface active sites of electrocatalysts. The continuous breakthroughs and significant progress in the last decade position engineering of OVs as a potential technique for advancing electrocatalysis. Motivated by this, the state‐of‐the‐art findings of the roles of OVs in both the CO 2 RR and the NO 3 RR are presented. The review starts with a description of approaches to constructing and techniques for characterizing OVs. This is followed by an overview of the mechanistic understanding of the CO 2 RR and a detailed discussion on the roles of OVs in the CO 2 RR. Then, insights into the NO 3 RR mechanism and the potential of OVs on NO 3 RR based on early findings are highlighted. Finally, the challenges in designing CO 2 RR/NO 3 RR electrocatalysts and perspectives in studying OV engineering are provided.
Uncovering Atomic-Scale Stability and Reactivity in Engineered Zinc Oxide Electrocatalysts for Controllable Syngas Production
Publisher: Wiley
Date: 10-06-2020
Synergistic Cyanamide Functionalization and Charge-Induced Activation of Nickel/Carbon Nitride for Enhanced Selective Photoreforming of Ethanol
Publisher: American Chemical Society (ACS)
Date: 15-10-2021
Enhanced graphitic domains of unreduced graphene oxide and the interplay of hydration behaviour and catalytic activity
Publisher: Elsevier BV
Date: 11-2021
Engineering a Kesterite‐Based Photocathode for Photoelectrochemical Ammonia Synthesis from NOx Reduction
Publisher: Wiley
Date: 11-06-2022
Abstract: Ammonia is a key chemical feedstock for industry as well as future carbon‐free fuel and transportable vector for renewable energy. Photoelectrochemical (PEC) ammonia synthesis from NO x reduction reaction (NO x RR) provides not only a promising alternative to the energy‐intensive Haber–Bosch process through direct solar‐to‐ammonia conversion, but a sustainable solution for balancing the global nitrogen cycle by restoring ammonia from wastewater. In this work, selective ammonia synthesis from PEC NO x RR by a kesterite (Cu 2 ZnSnS 4 [CZTS]) photocathode through loading defect‐engineered TiO x cocatalyst on a CdS/CZTS photocathode (TiO x /CdS/CZTS) is demonstrated. The uniquely designed photocathode enables selective ammonia production from NO x RR, yielding up to 89.1% Faradaic efficiency (FE) (0.1 V vs reversible hydrogen electrode (RHE)) with a remarkable positive onset potential (0.38 V vs RHE). By tailoring the amount of surface defective Ti 3+ species, the adsorption of reactant NO 3 − and * NO 2 intermediate is significantly promoted while the full coverage of TiO x also suppresses NO 2 − liberation as a by‐product, contributing to high ammonia selectivity. Further attempts on PEC ammonia synthesis from simulated wastewater show good FE of 64.9%, unveiling the potential of using the kesterite‐based photocathode for sustainably restoring ammonia from nitrate‐rich wastewater.
Catalytic reduction of NO by CO over Cu/CexZr1−xO2 prepared by flame synthesis
Publisher: Elsevier BV
Date: 15-06-2010
Effect of film thickness and agglomerate size on the superwetting and fog-free characteristics of TiO2 films
Publisher: Elsevier BV
Date: 07-2009
Scaffolding an ultrathin CdS layer on a ZnO nanorod array using pulsed electrodeposition for improved photocharge transport under visible light illumination
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA05195A
Abstract: ZnO nanorod arrays are used as suitable large area scaffolds to support CdS for improved visible light photoelectrochemical performances.
Probing Surface Properties and Reaction Intermediates During Heterogeneous Catalytic Oxidation of Acetaldehyde
Publisher: Wiley
Date: 28-09-2009
Harnessing the interplay of Fe–Ni atom pairs embedded in nitrogen-doped carbon for bifunctional oxygen electrocatalysis
Publisher: Elsevier BV
Date: 05-2020
Photocatalysis of heat treated sodium- and hydrogen-titanate nanoribbons for water splitting, H2/O2 generation and oxalic acid oxidation
Publisher: Elsevier BV
Date: 04-2013
Advantages of eutectic alloys for creating catalysts in the realm of nanotechnology-enabled metallurgy
Publisher: Springer Science and Business Media LLC
Date: 11-10-2019
DOI: 10.1038/S41467-019-12615-6
Abstract: The nascent field of nanotechnology-enabled metallurgy has great potential. However, the role of eutectic alloys and the nature of alloy solidification in this field are still largely unknown. To demonstrate one of the promises of liquid metals in the field, we explore a model system of catalytically active Bi-Sn nano-alloys produced using a liquid-phase ultrasonication technique and investigate their phase separation, surface oxidation, and nucleation. The Bi-Sn ratio determines the grain boundary properties and the emergence of dislocations within the nano-alloys. The eutectic system gives rise to the smallest grain dimensions among all Bi-Sn ratios along with more pronounced dislocation formation within the nano-alloys. Using electrochemical CO 2 reduction and photocatalysis, we demonstrate that the structural peculiarity of the eutectic nano-alloys offers the highest catalytic activity in comparison with their non-eutectic counterparts. The fundamentals of nano-alloy formation revealed here may establish the groundwork for creating bimetallic and multimetallic nano-alloys.
Tungsten Oxide/Carbide Surface Heterojunction Catalyst with High Hydrogen Evolution Activity
Publisher: American Chemical Society (ACS)
Date: 23-10-2020
Perfluorodecalin nanocapsule as an oxygen carrier and contrast agent for ultrasound imaging
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA47595F
Bi-functional gold-coated magnetite composites with improved biocompatibility
Publisher: Elsevier BV
Date: 02-2011
DOI: 10.1016/J.JCIS.2010.10.061
Abstract: The effect of gold attachment on the physical characteristics, cellular uptake, gene expression efficiency, and biocompatibility of magnetic iron oxide (MNP) vector was investigated in vitro in BHK21 cells. The surface modification of magnetite with gold was shown to alter the morphology and surface charge of the vector. Nonetheless, despite the differences in the surface charge with and without gold attachment, the surface charge of all vectors were positive when conjugated with PEI/DNA complex, and switched from positive to negative when suspended in cell media containing serum, indicating the adsorption of serum components onto the composite. The cellular uptake of all MNP vectors under the influence of a magnetic field increased when the composite loadings increased, and was higher for the MNP vector that was modified with gold. Both bare magnetite and gold-coated magnetite vectors gave similar optimal gene expression efficiency, however, the gold-coated magnetite vector required a 25-fold higher overall loading to achieve a comparable efficiency as the attachment of gold increased the particle size, thus reducing the surface area for PEI/DNA complex conjugation. The MNP vector without gold showed optimal gene expression efficiency at a specific magnetite loading, however further increases beyond the optimum loading decreased the efficiency of gene expression. The drop in efficiency at high magnetite loadings was attributed to the significant reduction in cellular viability, indicating the bare magnetite became toxic at high intracellular levels. The gene expression efficiency of the gold-modified vector, on the other hand, did not diminish with increasing magnetite loadings. Intracellular examination of both bare magnetite and gold-coated magnetite vectors at 48h post-magnetofection using transmission electron microscopy provided evidence of the localization of both vectors in the cell nucleus for gene expression and elucidated the nuclear uptake mechanism of both vectors. The results of this work demonstrate the efficacy of gold-modified vectors to be used in cellular therapy research that can function both as a magnetically-driven gene delivery vehicle and an intracellular imaging agent with negligible impact on cell viability.
Microbial Reduction of Hexavalent Chromium in Landfill Leachate
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/CH04069
Abstract: Landfill leachates were found to exhibit reducing properties whereby chromium(vi) was converted into chromium(iii). The reduction is attributed to a microbial process in the presence of high concentrations of organic materials in the leachates. Nonputrescible landfill leachate (NPLL) was found to reduce CrVI to a lesser extent than the municipal landfill leachate (MLL). Microbial reduction of CrVI was also found to occur under alkaline conditions in extracts from a cementitious waste. A 55% reduction of CrVI was achieved by enriching the extract with bacteria and organic material.
Vertical graphene nano-antennas for solar-to-hydrogen energy conversion
Publisher: Elsevier BV
Date: 09-2020
Recent advances and the design criteria of metal sulfide photocathodes and photoanodes for photoelectrocatalysis
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA05407D
Abstract: This review paper focuses on assessing recent publications that used metal sulfide photoelectrodes for PEC applications, with the aim of evaluating the vital parameters required for the design of metal sulfide photocathodes and photoanodes.
Modulating catalytic oxygen activation over Pt–TiO2/SiO2 catalysts by defect engineering of a TiO2/SiO2 support
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1CY02037D
Abstract: Defect sites (comprising Ti 3+ and NBOHC) and oxygen adsorbed on a Pt surface (PtO ads ) boost catalytic oxygen activation on a Pt/TiO 2 –SiO 2 catalyst.
Controlled fabrication of polyethylenimine-functionalized magnetic nanoparticles for the sequestration and quantification of free Cu 2+
Publisher: American Chemical Society (ACS)
Date: 08-06-2010
DOI: 10.1021/LA101196R
Abstract: Presented herein is a detailed study into the controlled adsorption of polyethylenimine (PEI) onto 50 nm crystalline magnetite nanoparticles (Fe(3)O(4) NPs) and how these PEI-coated Fe(3)O(4) NPs can be used for the magnetic capture and quantification of ultratrace levels of free cupric ions. We show the ability to systematically control the amount of PEI adsorbed onto the Fe(3)O(4) magnetic nanoparticle surfaces by varying the concentration of polymer during the adsorption process. This in turn allows for the tailoring of important colloidal properties such as the electrophoretic mobility and aggregation stability. Copper adsorption tests were carried out to investigate the effectiveness of PEI-coated Fe(3)O(4) NPs in copper remediation and detection. The study demonstrated that the NPs ability to bind with copper is highly dependent on the amount of PEI adsorbed on the NP surface. It was found that PEI-coated Fe(3)O(4) NPs were able to capture trace levels (approximately 2 ppb) of free cupric ions and concentrate the ions to allow for detection via ICP-OES. More importantly, it was found that due to the amine-rich structure of PEI, the PEI-coated Fe(3)O(4) NPs selectively adsorb toxic free cupric ions but not the less toxic EDTA complexed copper. This unique property makes PEI-coated Fe(3)O(4) NPs a novel solution for the challenge of separating and quantifying toxic cupric ions as opposed to the total copper concentration of a s le.
Introducing a protective interlayer of TiO2 in Cu2O–CuO heterojunction thin film as a highly stable visible light photocathode
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4RA13464H
Abstract: Photoactivity and stability of Cu 2 O–CuO heterojunction thin films are enhanced by incorporating an interlayer of TiO 2 . The thin TiO 2 layer minimises the redox reactions at Cu 2 O–electrolyte interface and facilitates charge transfer from Cu 2 O to CuO.
Insight into microstructural and magnetic properties of flame-made γ-Fe2 O3 nanoparticles
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B711705A
Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability
Publisher: Elsevier BV
Date: 08-2018
3D Heterostructured Copper Electrode for Conversion of Carbon Dioxide to Alcohols at Low Overpotentials
Publisher: Wiley
Date: 07-2018
Transforming active sites in nickel–nitrogen–carbon catalysts for efficient electrochemical CO2 reduction to CO
Publisher: Elsevier BV
Date: 12-2020
Enhancing the catalytic oxidation capacity of Pt/TiO2 using a light pre-treatment approach
Publisher: Elsevier BV
Date: 03-2015
Occurrence and prevention of photodissolution at the phase junction of magnetite and titanium dioxide
Publisher: Elsevier BV
Date: 03-2002
Zeolite synthesis from coal fly ash for the removal of lead ions from aqueous solution
Publisher: Wiley
Date: 30-11-2001
DOI: 10.1002/JCTB.521
Effect of Metal‐Support Interactions in Mixed Co/Al Catalysts for Dry Reforming of Methane
Publisher: Wiley
Date: 09-07-2019
Tungsten Trioxide as a Visible Light Photocatalyst for Volatile Organic Carbon Removal
Publisher: MDPI AG
Date: 31-10-2014
Light-Induced Synergistic Multidefect Sites on TiO2/SiO2 Composites for Catalytic Dehydrogenation
Publisher: American Chemical Society (ACS)
Date: 12-02-2019
From Stochastic Self‐Assembly of Nanoparticles to Nanostructured (Photo)Electrocatalysts for Renewable Power‐to‐X Applications via Scalable Flame Synthesis
Publisher: Wiley
Date: 10-12-2022
Abstract: Environmentally friendly routes from “Power‐to‐X” (P2X) technologies to sustainably harvest and store renewable energy with net‐zero CO 2 emission are imperative. The concept of P2X relies on (photo)electrolysis of earth‐abundant molecules into value‐added products. For practical utilization, engineering robust, active, albeit inexpensive (photo)electrocatalysts via industrially compatible technologies is indeed crucial. In this context, flame spray pyrolysis (FSP) stands as an emerging approach for one‐step synthesis of ready‐to‐use (photo)electrocatalysts with production rates of Kg h ‐1 in lab‐scales. While features of FSP to engineer nanomaterials have been summarised, there is a need for more critical discussions on key factors, modulating properties of flame‐made catalysts. Therefore, this review article will first provide an overview about the concept of the P2X and catalyst development strategies. Unique characteristic of flame‐synthesized nano‐catalysts including compositions, fractal morphologies, defects, and active sites will be then critically discussed. Furthermore, a potential of FSP as an electrode‐assembly technique for one‐step preparation of catalysts on gas diffusion layers for industry‐relevant electrolyser testing will be presented. Finally, perspectives on challenges and opportunities of FSP for renewable energies will be raised. This will provide insights into the versatility and commercial viability of the FSP route for engineering novel nanostructured catalysts for renewable energy applications.
Platinum electrocatalysts with plasmonic nano-cores for photo-enhanced oxygen-reduction
Publisher: Elsevier BV
Date: 11-2017
Novel TiO2 thin film with non-UV activated superwetting and antifogging behaviours
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B618280A
Flame-Sprayed Superparamagnetic Bare and Silica-Coated Maghemite Nanoparticles: Synthesis, Characterization, and Protein Adsorption−Desorption
Publisher: American Chemical Society (ACS)
Date: 12-2006
DOI: 10.1021/CM061861V
Polysulfide immobilization and conversion on a conductive polar MoC@MoOx material for lithium-sulfur batteries
Publisher: Elsevier BV
Date: 2018
Cytotoxic origin of copper(II) oxide nanoparticles: Comparative studies with micron-sized particles, leachate, and metal salts
Publisher: American Chemical Society (ACS)
Date: 12-08-2011
DOI: 10.1021/NN2020248
Abstract: The work investigates the source of toxicity of copper oxide nanoparticles (CuO NPs) with respect to its leaching characteristic and speciation. Complexation-mediated leaching of CuO NPs by amino acids was identified as the source of toxicity toward Escherichia coli, the model microorganism used in the current study. The leached copper-peptide complex induces a multiple-fold increase in intracellular reactive oxygen species generation and reduces the fractions of viable cells, resulting in the overall inhibition of biomass growth. The cytotoxicity of the complex leachate is however different from that of equivalent soluble copper salts (nitrates and sulfates). A pH-dependent copper speciation during the addition of copper salts gives rise to uncoordinated copper ions, which in turn result in greater toxicity and cell lysis, the latter of which was not observed for CuO NPs even at comparable pH. Since leaching did not occur with micrometer-sized CuO, no cytotoxicty effect was observed, thus highlighting the prominence of materials toxicity at the nanoscale.
Modulating Pt-O-Pt atomic clusters with isolated cobalt atoms for enhanced hydrogen evolution catalysis
Publisher: Springer Science and Business Media LLC
Date: 04-05-2022
DOI: 10.1038/S41467-022-30155-4
Abstract: Platinum is the most efficient catalyst for hydrogen evolution reaction in acidic conditions, but its widespread use has been impeded by scarcity and high cost. Herein, Pt atomic clusters (Pt ACs) containing Pt-O-Pt units were prepared using Co/N co-doped carbon (CoNC) as support. Pt ACs are anchored to single Co atoms on CoNC by forming strong interactions. Pt-ACs/CoNC exhibits only 24 mV overpotential at 10 mA cm −2 and a high mass activity of 28.6 A mg −1 at 50 mV, which is more than 6 times higher than commercial Pt/C with any Pt loadings. Spectroscopic measurements and computational modeling reveal the enhanced hydrogen generation activity attributes to the charge redistribution between Pt and O atoms in Pt-O-Pt units, making Pt atoms the main active sites and O linkers the assistants, thus optimizing the proton adsorption and hydrogen desorption. This work opens an avenue to fabricate noble-metal-based ACs stabilized by single-atom catalysts with desired properties for electrocatalysis.
Transformation of Cuprous Oxide into Hollow Copper Sulfide Cubes for Photocatalytic Hydrogen Generation
Publisher: American Chemical Society (ACS)
Date: 13-04-2018
Oxygen Nucleation of MoS2 Nanosheet Thin Film Supercapacitor Electrodes for Enhanced Electrochemical Energy Storage
Publisher: Wiley
Date: 14-06-2021
Abstract: A direct thin film approach to fabricate large‐surface MoS 2 nanosheet thin film supercapacitors using the solution‐based diffusion of thiourea into an anodized MoO 3 thin film was investigated. A dense MoS 2 nanosheet thin film electrode (D‐MoS 2 ) was obtained when the anodized MoO 3 thin film was processed in a low thiourea solution concentration, whereas a highly porous MoS 2 nanosheet thin film electrode (P‐MoS 2 ) was formed at a higher thiourea solution concentration. The charge storage performances of the D‐MoS 2 and P‐MoS 2 thin films displayed an unusual increase in capacitance on extended cycling, leading to a capacitance as high as around 5–8 mF cm −2 . X‐ray diffraction and cross‐sectional microscopy revealed the capacitance enhancements of the MoS 2 supercapacitors are attributable to the nucleation of a new MoS 2‐ x O x phase upon cycling. For the D‐MoS 2 nanosheet thin film, the formation and growth of the MoS 2‐ x O x phase during cycling was accompanied by a volumetric expansion of the MoS 2 layer. For the P‐MoS 2 thin film, the nucleation and growth of the MoS 2‐ x O x phase occurred in the pores of the MoS 2 layer. The propagation of the MoS 2‐ x O x phase also shifted the charge storage process in both films from a diffusion‐limited process to a capacitive‐dominant process.
Carbon-Based Metal-Free Catalysts for Key Reactions Involved in Energy Conversion and Storage
Publisher: Wiley
Date: 20-11-2018
Abstract: Electrocatalysts are key for renewable energy technologies and other important industrial processes. Currently, noble metals and metal oxides are the most widely used catalysts for electrocatalysis. However, metal-based catalysts often suffer from multiple disadvantages, including high cost, low selectivity, poor durability, impurity poisoning and fuel crossover effects, and detrimental effects on the environment. Therefore, carbon-based metal-free catalysts have received increasing interest as promising electrocatalysts for advanced energy conversion and storage. Recently, tremendous progress has been achieved in the development of low-cost, efficient carbon-based metal-free catalysts for renewable energy technologies and beyond. Here, a concise, but comprehensive and critical, review of recent advances in the field of carbon-based metal-free catalysts is provided. A brief overview of various reactions involved in renewable energy conversion and storage, including the oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, carbon dioxide reduction reaction, nitrogen reduction reaction, and bifunctional/multifunctional electrocatalysis, along with some challenges and opportunities, is presented.
Arsenic speciation in municipal landfill leachate
Publisher: Elsevier BV
Date: 05-2010
DOI: 10.1016/J.CHEMOSPHERE.2010.03.010
Abstract: Arsenic species in municipal landfill leachates (MLL) were investigated by HPLC-DRC-ICPMS and LC-ESI-MS/MS. Various arsenic species including arsenate (iAs(V)), arsenite (iAs(III)), monomethylarsonic acid (MMA(V)), dimethylarsinic acid (DMA(V)), as well as sulfur-containing organoarsenic species were detected. Two sulfur-containing arsenic species in a MLL were positively identified as dimethyldithioarsinic acid (DMDTA(V)) and dimethylmonothioarsinic acid (DMMTA(V)) by comparing their molecular ions, fragment patterns and sulfur/arsenic ratios with in-house synthesised thiol-organoarsenic compounds. The findings demonstrated the potential for transformation of DMA(V) to DMDTA(V) and DMMTA(V) in a DMA(V)-spiked MLL in a landfill leachate environment.
Spherical Murray-Type Assembly of Co–N–C Nanoparticles as a High-Performance Trifunctional Electrocatalyst
Publisher: American Chemical Society (ACS)
Date: 06-02-2019
Abstract: Future renewable energy conversion requires advanced electrocatalysis technologies for hydrogen production, fuel cells, and metal-air batteries. Highly efficient trifunctional nonprecious electrocatalysts are a critical precious metal replacement for the economically viable electrocatalysis of oxygen reduction and water splitting, both of which are a triphase electrode process. Electrocatalysts with a refined porous structure and active composition beneficial for three-phase reactions are broadly pursued. Herein, a highly promising trifunctional spherical Murray assembly of Co-N-C nanoparticles was derived from low-cost Prussian blue analogues for the oxygen reduction reaction and water splitting. The Murray-type architecture with a tunable porous hierarchy for efficient mass transfer and the combination of a Co-N-C active composition are key for the improved electrocatalytic performance. Acid-leaching produced an optimized Murray-type durable and methanol-tolerant Co-N-C electrocatalyst that achieved an onset potential of 0.94 V [vs reversible hydrogen electrode (RHE)] and a half wave potential of 0.84 V (vs RHE) as well as a large diffusion-limited current density of 5.7 mA cm
Exploring the relationship between surface structure and photocatalytic activity of flame-made TiO 2 -based catalysts
Publisher: Elsevier BV
Date: 09-2012
A Study on the Removal of Humic Acid Using Advanced Oxidation Processes
Publisher: Informa UK Limited
Date: 05-2007
The controlled disassembly of mesostructured perovskites as an avenue to fabricating high performance nanohybrid catalysts
Publisher: Springer Science and Business Media LLC
Date: 25-05-2017
DOI: 10.1038/NCOMMS15553
Abstract: Versatile superstructures composed of nanoparticles have recently been prepared using various disassembly methods. However, little information is known on how the structural disassembly influences the catalytic performance of the materials. Here we show how the disassembly of an ordered porous La 0.6 Sr 0.4 MnO 3 perovskite array, to give hexapod mesostructured nanoparticles, exposes a new crystal facet which is more active for catalytic methane combustion. On fragmenting three-dimensionally ordered macroporous (3DOM) structures in a controlled manner, via a process that has been likened to retrosynthesis, hexapod-shaped building blocks can be harvested which possess a mesostructured architecture. The hexapod-shaped perovskite catalyst exhibits excellent low temperature methane oxidation activity ( T 90% =438 °C reaction rate=4.84 × 10 −7 mol m −2 s −1 ). First principle calculations suggest the fractures, which occur at weak joints within the 3DOM architecture, afford a large area of (001) surface that displays a reduced energy barrier for hydrogen abstraction, thereby facilitating methane oxidation.
Unlocking the potential of the formate pathway in the photo-assisted Sabatier reaction
Publisher: Springer Science and Business Media LLC
Date: 30-11-2020
Self-cleaning performance of polycarbonate surfaces coated with titania nanoparticles
Publisher: Springer Science and Business Media LLC
Date: 19-11-2008
The role of ferric ion in the photochemical and photocatalytic oxidation of resorcinol
Publisher: Elsevier BV
Date: 10-09-2005
Ru-Doped Cobalt−Zirconia Nanocomposites by Flame Synthesis: Physicochemical and Catalytic Properties
Publisher: American Chemical Society (ACS)
Date: 23-05-2008
DOI: 10.1021/CM8002657
Understanding Hydrothermal Titanate Nanoribbon Formation
Publisher: American Chemical Society (ACS)
Date: 11-06-2010
DOI: 10.1021/CG1004984
Manipulating the Fate of Charge Carriers with Tungsten Concentration: Enhancing Photoelectrochemical Water Oxidation of Bi2WO6
Publisher: Wiley
Date: 28-07-2021
Abstract: Bismuth tungstate (Bi 2 WO 6 ) thin film photoanode has exhibited an excellent photoelectrochemical (PEC) performance when the tungsten (W) concentration is increased during the fabrication. Plate‐like Bi 2 WO 6 thin film with distinct particle sizes and surface area of different exposed facets are successfully prepared via hydrothermal reaction. The smaller particle size in conjunction with higher exposure extent of electron‐dominated {010} crystal facet leads to a shorter electron transport pathway to the bulk surface, assuring a lower charge transfer resistance and thus minimal energy loss. In addition, it is proposed based on the results from conductive atomic force microscopy that higher W concentration plays a crucial role in facilitating the charge transport of the thin film. The “self‐doped” of W in Bi 2 WO 6 will lead to the higher carrier density and improved conductivity. Thus, the variation in the W concentration during a synthesis can be served as a promising strategy for future W based photoanode design to achieve high photoactivity in water splitting application.
Understanding photocatalytic metallization of preadsorbed ionic gold on titania, ceria, and Zirconia
Publisher: American Chemical Society (ACS)
Date: 07-10-2010
DOI: 10.1021/LA902592P
Abstract: A nonaqueous photodeposition procedure for forming Au nanoparticles on semiconducting supports (TiO(2), CeO(2), and ZrO(2)) was investigated. Intrinsic excitation of the support was sufficient to induce Au(0) nucleation, without the need for an organic hole-scavenging species. Photoreduction rates were higher over TiO(2) and ZrO(2) than over CeO(2), likely due to a lower rate of photogenerated electron recombination. Illumination resulted in metallization of the adsorbed Au species and formation of crystalline Au nanoparticles dispersed across the oxide surfaces. On the basis of transmission electron microscopy (TEM) evidence of a strong Au particle-metal oxide interaction, it is proposed that Au deposit formation proceeds via the nucleation of highly dispersed clusters which can diffuse and amalgamate at room temperature to form larger surface-defect-immobilized clusters, with the final particle size being significantly smaller than that achieved by conventional aqueous photodeposition. From this work, it is possible to draw several new fundamental insights, with regards to both the nonaqueous photodeposition process and the general mechanism by which dispersed metallic Au nanoparticles are formed from ionic precursors adsorbed upon metal oxide supports.
Plasmonic effects on CO2 reduction over bimetallic Ni-Au catalysts
Publisher: Elsevier BV
Date: 02-2019
Highly efficient and selective electrocatalytic hydrogen peroxide production on Co-O-C active centers on graphene oxide
Publisher: Springer Science and Business Media LLC
Date: 28-03-2022
DOI: 10.1038/S42004-022-00645-Z
Abstract: Electrochemical oxygen reduction provides an eco-friendly synthetic route to hydrogen peroxide (H 2 O 2 ), a widely used green chemical. However, the kinetically sluggish and low-selectivity oxygen reduction reaction (ORR) is a key challenge to electrochemical production of H 2 O 2 for practical applications. Herein, we demonstrate that single cobalt atoms anchored on oxygen functionalized graphene oxide form Co-O-C@GO active centres (abbreviated as Co 1 @GO for simplicity) that act as an efficient and durable electrocatalyst for H 2 O 2 production. This Co 1 @GO electrocatalyst shows excellent electrochemical performance in O 2 -saturated 0.1 M KOH, exhibiting high reactivity with an onset potential of 0.91 V and H 2 O 2 production of 1.0 mg cm −2 h −1 while affording high selectivity of 81.4% for H 2 O 2 . Our combined experimental observations and theoretical calculations indicate that the high reactivity and selectivity of Co 1 @GO for H 2 O 2 electrogeneration arises from a synergistic effect between the O-bonded single Co atoms and adjacent oxygen functional groups (C-O bonds) of the GO present in the Co-O-C active centres.
Crystalline TiO2 Nanorod Aggregates: Template‐Free Fabrication and Efficient Light Harvesting in Dye‐Sensitized Solar Cell Applications
Publisher: Wiley
Date: 21-05-2013
Photoenhanced CO2 methanation over La2O3 promoted Co/TiO2 catalysts
Publisher: Elsevier BV
Date: 10-2021
A pulse electrodeposited amorphous tunnel layer stabilises Cu2O for efficient photoelectrochemical water splitting under visible-light irradiation
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA00629G
Abstract: An ultrathin amorphous ZnO layer is introduced on Cu 2 O by pulsed electrodeposition, which helps stabilise the Cu 2 O photocathode for water splitting.
Antimicrobial activity of T4 bacteriophage conjugated indium tin oxide surfaces
Publisher: Elsevier BV
Date: 03-2018
DOI: 10.1016/J.JCIS.2017.12.029
Abstract: We report the antimicrobial activity of bare and surface functionalized indium tin oxide (ITO) conjugated with T4 bacteriophage towards E. coli. A ∼ 10
Silver metallisation of titania particles: effects on photoactivity for the oxidation of organics
Publisher: Elsevier BV
Date: 03-2004
Effect of inlet mass loading, water and total bacteria count on methanol elimination using upward flow and downward flow biofilters
Publisher: Wiley
Date: 2000
DOI: 10.1002/(SICI)1097-4660(200004)75:4<299::AID-JCTB210>3.0.CO;2-P
Anti-angiogenic activity of heparin functionalised cerium oxide nanoparticles
Publisher: Elsevier BV
Date: 11-2013
DOI: 10.1016/J.BIOMATERIALS.2013.07.083
Abstract: Cerium oxide nanoparticles (nanoceria) are widely reported to be non-cytotoxic and modulate intracellular reactive oxygen species (ROS). In this study, nanoceria (dxRD = 12 nm) were functionalised with either 130 or 880 molecules of unfractionated heparin using the organosilane linker, 3-aminopropyltriethoxysilane. Nanoceria with a low level of heparin functionalisation were found to scavenge intracellular ROS to the same extent as unfunctionalised nanoceria and significantly more than cells exposed to medium only. In contrast, nanoceria with the highest level of heparin functionalisation were not as effective at scavenging intracellular ROS. Nanoceria were localised predominantly in the cytoplasm, while heparin-nanoceria were localised in both the cytoplasm and lysosomes. Together these data demonstrated that the level of nanoceria surface functionalisation with heparin determined the intracellular localisation and ROS scavenging ability of these particles. Additionally, heparin-nanoceria were effective in reducing endothelial cell proliferation indicating that they may find application in the control of angiogenesis in cancer in the future.
Microbial transformation of arsenic species in municipal landfill leachate
Publisher: Elsevier BV
Date: 04-2011
DOI: 10.1016/J.JHAZMAT.2011.01.093
Abstract: The microbial transformation of arsenic species in municipal landfill leachate (MLL) was investigated with the objective to highlight arsenic transformation in the landfill system. Across the 43 day incubation in MLL, more than 90% arsenate (iAs(V)) was found to reduce to arsenite (iAs(III)) within 20 days, while iAs(III) was comparably stable although a fraction of iAs(III) was temporarily oxidated to iAs(V) in the first 3 days. Transformation of monomethylarsonic acid (MMA(V)) to dimethylarsinic acid (DMA(V)) in MLL was slow with only 5% MMA(V) methylated to DMA(V) after 43 days incubation. A portion of DMA(V) and MMA(V) in MLL was demonstrated to transform into thiol-organoarsenic and monomethylarsonous acid (MMA(III)), which were identified to include dimethyldithioarsinic acid (DMDTA(V)), dimethylmonothioarsinic acid (DMMTA(V)) and monomethyldithioarsonic acid (MMDTA(V)) by HPLC-ICPMS and LC-ESI-MS/MS. The microbial formation of DMDTA(V), DMMTA(V) and MMDTA(V) is postulated to relate to hydrogen sulfide generated by bacteria in MLL. Differences in arsenic transformation in sterilised and non-sterilised MLLs demonstrate bacteria play a crucial role in arsenic transformation in the landfill body. This study reveals the complexity of arsenic speciation and highlights the potential risk of forming highly toxic thiol-organoarsenic and MMA(III) in the landfill environment.
Emerging material engineering strategies for amplifying photothermal heterogeneous CO2 catalysis
Publisher: Elsevier BV
Date: 08-2021
The influence of La-doping on the activity and stability of Cu/ZnO catalyst for the low-temperature water–gas shift reaction
Publisher: Elsevier BV
Date: 07-07-2010
Fabrication of a CuInS2 photoelectrode using a single-step electrodeposition with controlled calcination atmosphere
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA45691A
Role of support in photothermal carbon dioxide hydrogenation catalysed by Ni/CexTiyO2
Publisher: Elsevier BV
Date: 04-2018
Effects of organic hole scavengers on the photocatalytic reduction of selenium anions
Publisher: Elsevier BV
Date: 07-2003
Carbon-supported layered double hydroxide nanodots for efficient oxygen evolution: Active site identification and activity enhancement
Publisher: Springer Science and Business Media LLC
Date: 24-02-2021
Facile Functionalization and Phase Reduction Route of Magnetic Iron Oxide Nanoparticles for Conjugation of Matrix Metalloproteinase
Publisher: Wiley
Date: 06-2010
Transforming anodized WO 3 films into visible-light-active Bi 2 WO 6 photoelectrodes by hydrothermal treatment
Publisher: American Chemical Society (ACS)
Date: 16-03-2012
DOI: 10.1021/JZ300179K
Abstract: We directly transformed anodized tungsten oxide film (WO3·2H2O) into bismuth tungstate (Bi2WO6) by substituting the intercalated water molecules with [Bi2O2](2+) in a hydrothermal treatment. The resultant Bi2WO6 was readily used as an electrode to produce anodic photocurrent in H2 evolution on the Pt counter electrode observed under visible light irradiation.
Ligand‐Promoted Cooperative Electrochemical Oxidation of Bio‐Alcohol on Distorted Cobalt Hydroxides for Bio‐Hydrogen Extraction
Publisher: Wiley
Date: 13-05-2021
Abstract: Hydrogen is increasingly viewed as a game‐changer in the clean energy sector. Renewable hydrogen production from water is industrialized by integrating water electrolysis and renewable electricity, but the current cost of water‐born hydrogen remains high though. An ideal scenario would be to produce value‐added chemicals along with hydrogen so the cost can be partially offset. Herein, facilitated bio‐hydrogen extraction and biomass‐derived chemical formation from sugar‐derived 5‐hydroxymethyfurfural (HMF) were achieved via the in‐situ transformation of cobalt‐bound electrocatalysts. The cyanide‐bound cobalt hydroxide exhibited a low voltage at 1.55 V at 10 mA cm −2 for bio‐hydrogen production, compared with an iridium catalyst (1.75 V). The interaction between the biomass intermediate and the cyanide ligand is suggested to be responsible for the improved activity.
Understanding selective enhancement by silver during photocatalytic oxidation
Publisher: Springer Science and Business Media LLC
Date: 08-2005
DOI: 10.1039/B506320E
Abstract: The superiority of silver deposited titania particles over bare titania particles for the photocatalytic oxidation of selected organic compounds is explained: the presence of silver mainly enhances the photocatalytic oxidation of organic compounds that are predominantly oxidised by holes, while it has only an insignificant effect on those organic compounds that require hydroxyl radicals for their mineralisation.
A review on photo-thermal catalytic conversion of carbon dioxide
Publisher: Elsevier BV
Date: 07-2017
Some more observations on the unique electrochemical properties of electrode-monolayer-nanoparticle constructs
Publisher: Wiley
Date: 06-09-2010
Abstract: Physical and electrochemical properties of gold nanoparticle-based electrodes are highlighted. Polycrystalline gold electrodes are passivated by a self-assembled monolayer, then the immobilization of gold nanoparticles "switch on" the electrochemical reactivity of ruthenium. Herein, gap-mode Raman studies show that the location of the nanoparticles is on the top of the monolayer, meaning that the "switching on" cannot be attributed to a direct electrical contact between nanoparticles and the gold support. This "switching on" feature is also not affected by the size of the gold nanoparticles with a range of diameters between 4 and 67 nm. Further, the charge of the nanoparticles is investigated by grafting chemical groups onto the nanoparticles which is observed to alter the electron-transfer kinetics. The variation in rate constant however is insufficient to attribute the "switching on" phenomenon to a possible adsorption of the redox species onto the nanoparticles.
Aggregate properties in relation to aggregation conditions under various applied shear environments
Publisher: Elsevier BV
Date: 02-2004
Improving the photo-oxidative capability of BiOBr via crystal facet engineering
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10964K
Abstract: An increased presence of the {010} facet improved the performance of BiOBr for both water photooxidation and formic acid photodegradation.
Sensitization of Pt/TiO2 Using Plasmonic Au Nanoparticles for Hydrogen Evolution under Visible-Light Irradiation
Publisher: American Chemical Society (ACS)
Date: 31-08-2017
Abstract: Au nanoparticles with different sizes (10, 20, 30, and 50 nm) were synthesized using a seed-assisted approach and anchored onto Pt/TiO
Highly Selective Reduction of CO2 to Formate at Low Overpotentials Achieved by a Mesoporous Tin Oxide Electrocatalyst
Publisher: American Chemical Society (ACS)
Date: 09-01-2018
Bi-Sn Catalytic Foam Governed by Nanometallurgy of Liquid Metals
Publisher: American Chemical Society (ACS)
Date: 05-05-2020
A perspective on fabricating carbon-based nanomaterials by photocatalysis and their applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2EE22128D
Preparation and characterisation of new-polyaluminum chloride-chitosan composite coagulant
Publisher: Elsevier BV
Date: 10-2012
DOI: 10.1016/J.WATRES.2012.06.021
Abstract: In this study, the formulation of a novel polyaluminum chloride-chitosan composite coagulant that improves the coagulation process for natural organic matter (NOM) removal was investigated. The performance of the composite coagulant was tested using two water sources (synthetic and natural water) to develop a better understanding on the behaviour of the composite coagulant. Fourier Transform-Infra red (FT-IR) spectroscopy, ferron analysis and zeta potential studies were performed to characterise the composite coagulant. FT-IR analysis showed that there is an intermolecular interaction between Al species and chitosan molecules, while ferron analysis indicated that the distributions of Al(a), Al(b), and Al(c) in PACl-chitosan are different from those in PACl. At a low Al dosage (2.16 mg L⁻¹), a much higher removal of NOM from synthetic water, as evidenced from UV₂₅₄ and Dissolved Organic Carbon (DOC) measurements, was achieved by the composite coagulants in comparison to that removed by PACl or PACl and chitosan added separately. For natural water from the Myponga Reservoir, both polyaluminum chloride (PACl) and PACl-chitosan composite coagulants demonstrated similar dissolved organic carbon (DOC) percentage removal, whereas PACl-chitosan gave a slight improvement in removing the UV₂₅₄ absorbing components of NOM.
Photocatalytic H2 Evolution over TiO2 Nanoparticles. The Synergistic Effect of Anatase and Rutile
Publisher: American Chemical Society (ACS)
Date: 22-01-2010
DOI: 10.1021/JP910810R
Solid-state NMR study of photocatalytic oxidation of acetaldehyde over the flame-made F-TiO2 catalyst
Publisher: Elsevier BV
Date: 04-2018
Valence Alignment of Mixed Ni–Fe Hydroxide Electrocatalysts through Preferential Templating on Graphene Edges for Enhanced Oxygen Evolution
Publisher: American Chemical Society (ACS)
Date: 20-06-2020
Insight into Serum Protein Interactions with Functionalized Magnetic Nanoparticles in Biological Media
Publisher: American Chemical Society (ACS)
Date: 23-02-2012
DOI: 10.1021/LA204740T
Abstract: Surface modification with linear polymethacrylic acid (20 kDa), linear and branched polyethylenimine (25 kDa), and branched oligoethylenimine (800 Da) is commonly used to improve the function of magnetite nanoparticles (MNPs) in many biomedical applications. These polymers were shown herein to have different adsorption capacity and anticipated conformations on the surface of MNPs due to differences in their functional groups, architectures, and molecular weight. This in turn affects the interaction of MNPs surfaces with biological serum proteins (fetal bovine serum). MNPs coated with 25 kDa branched polyethylenimine were found to attract the highest amount of serum protein while MNPs coated with 20 kDa linear polymethacrylic acid adsorbed the least. The type and amount of protein adsorbed, and the surface conformation of the polymer was shown to affect the size stability of the MNPs in a model biological media (RPMI-1640). A moderate reduction in r(2) relaxivity was also observed for MNPs suspended in RPMI-1640 containing serum protein compared to the same particles suspended in water. However, the relaxivities following protein adsorption are still relatively high making the use of these polymer-coated MNPs as Magnetic Resonance Imaging (MRI) contrast agents feasible. This work shows that through judicious selection of functionalization polymers and elucidation of the factors governing the stabilization mechanism, the design of nanoparticles for applications in biologically relevant conditions can be improved.
Channelled optical fibre photoreactor for improved air quality control
Publisher: Elsevier BV
Date: 2010
Silver-Based Plasmonic Catalysts for Carbon Dioxide Reduction
Publisher: American Chemical Society (ACS)
Date: 09-01-2020
Photoelectrocatalytic activity of mesoporous TiO2 films prepared using the sol-gel method with tri-block copolymer as structure directing agent
Publisher: Springer Science and Business Media LLC
Date: 05-02-2008
Electroreduction of CO2 to CO on a Mesoporous Carbon Catalyst with Progressively Removed Nitrogen Moieties
Publisher: American Chemical Society (ACS)
Date: 30-08-2018
Synergistic ultraviolet and visible light photo-activation enables intensified low-temperature methanol synthesis over copper/zinc oxide/alumina
Publisher: Springer Science and Business Media LLC
Date: 31-03-2020
DOI: 10.1038/S41467-020-15445-Z
Abstract: Although photoexcitation has been employed to unlock the low-temperature equilibrium regimes of thermal catalysis, mechanism underlining potential interplay between electron excitations and surface chemical processes remains elusive. Here, we report an associative zinc oxide band-gap excitation and copper plasmonic excitation that can cooperatively promote methanol-production at the copper-zinc oxide interfacial perimeter of copper/zinc oxide/alumina (CZA) catalyst. Conversely, selective excitation of in idual components only leads to the promotion of carbon monoxide production. Accompanied by the variation in surface copper oxidation state and local electronic structure of zinc, electrons originating from the zinc oxide excitation and copper plasmonic excitation serve to activate surface adsorbates, catalysing key elementary processes (namely formate conversion and hydrogen molecule activation), thus providing one explanation for the observed photothermal activity. These observations give valuable insights into the key elementary processes occurring on the surface of the CZA catalyst under light-heat dual activation.
Erratum: Effect of charge trapping species of cupric ions on the photocatalytic oxidation of resorcinol (Applied Catalysis B: Environmental (2005) 55 (123-132) DOI: 10.1016/j.apcatb.2004.08.004)
Publisher: Elsevier BV
Date: 06-2005
Nanoparticle-protein corona complexes govern the biological fates and functions of nanoparticles
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TB21526A
Spectrum splitting using gold and silver nanofluids for photovoltaic/thermal collectors
Publisher: IEEE
Date: 06-2017
A hybrid plasma electrocatalytic process for sustainable ammonia production
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE03769A
Abstract: Sustainable ammonia production using water and air through the coupling of plasma-driven intermediary NO x generation and their electrocatalytic conversion.
Photocatalytic oxidation of toluene and trichloroethylene in the gas-phase by metallised (Pt, Ag) titanium dioxide
Publisher: Elsevier BV
Date: 2008
Ferrous ion as a reducing agent in the generation of antibiofilm nitric oxide from a copper-based catalytic system
Publisher: Elsevier BV
Date: 05-2018
DOI: 10.1016/J.NIOX.2018.01.005
Abstract: The work found that the electron-donating properties of ferrous ions (Fe
Micro-properties of coal aggregates: Implications on hyperbaric filtration performance for coal dewatering
Publisher: Elsevier BV
Date: 09-2006
CO2 reforming of methane over MCM-41-supported nickel catalysts: altering support acidity by one-pot synthesis at room temperature
Publisher: Elsevier BV
Date: 03-2014
Machine Learning for Accelerated Discovery of Solar Photocatalysts
Publisher: American Chemical Society (ACS)
Date: 07-10-2020
Identifying Key Design Criteria for Large-Scale Photocatalytic Hydrogen Generation from Engineering and Economic Perspectives
Publisher: American Chemical Society (ACS)
Date: 22-04-2022
Understanding effects of water characteristics on natural organic matter treatability by PACl and a novel PACl-chitosan coagulants
Publisher: Elsevier BV
Date: 12-2013
DOI: 10.1016/J.JHAZMAT.2013.10.036
Abstract: In this study, we investigated the relationship between water characteristics and removal of natural organic matter (NOM) using polyaluminium chloride (PACl) and a newly developed coagulant obtained by hybridising PACl with chitosan (PACl-chitosan) for two different types of water. Using UV-visible spectroscopy analysis, we showed that PACl-chitosan is more effective than PACl for treating water s les that contain higher levels of activated polyhydroxyaromatic moieties. As a result, a lower level of total trihalomethanes formation potential (THMFP) was detected for synthetic water treated with PACl-chitosan coagulant compared to water treated with PACl only. In contrast, no difference was observed for the total THMFP that were formed following coagulation with either coagulant, for water s le containing the same level of organic carbon concentration, but lower levels of polyhydroxyaromatic moieties. Our work shows how the complex characteristics and interactions of organic matter with coagulant component can affect the outcome of the treatment process, and in this case, enhance the treatment. The use of PACl-chitosan was also shown to produce larger floc for both water s les this again, can lead to better removal.
CuOx dispersion and reducibility on TiO2 and its impact on photocatalytic hydrogen evolution
Publisher: Elsevier BV
Date: 08-2014
Layered conductive polymer-inorganic anion network for high-performance ultra-loading capacitive electrodes
Publisher: Elsevier BV
Date: 09-2018
Progress in Heterogeneous Photocatalysis: From Classical Radical Chemistry to Engineering Nanomaterials and Solar Reactors
Publisher: American Chemical Society (ACS)
Date: 17-02-2012
DOI: 10.1021/JZ3000646
Abstract: The field of heterogeneous photocatalysis has expanded rapidly in the last four decades, having undergone various evolutionary phases related to energy and the environment. The two most significant applications of photocatalysis are geared toward solar water splitting and the purification of air and water. Notably, the interdisciplinary nature of the field has increased significantly, incorporating semiconductor physics, surface sciences, photo and physical chemistry, materials science, and chemical engineering. Whereas this forms the basis on which the field continues to grow, adequate bridging of multidisciplinary knowledge remains essential. By recalling some of the classical fundamentals of photocatalysis, this Perspective provides contemporary views on heterogeneous photochemical conversion, encompassing charge transport characteristics, radical chemistry and organic degradation mechanisms, photocatalyst design, and photoreactor engineering.
ZnS Thin Films for Visible-Light Active Photoelectrodes: Effect of Film Morphology and Crystal Structure
Publisher: American Chemical Society (ACS)
Date: 06-04-2016
Tuning the Coordination Structure of Cu-N-C Single Atom Catalysts for Simultaneous Electrochemical Reduction of CO2 and NO3- to Urea
Publisher: Wiley
Date: 08-07-2022
Abstract: Closing both the carbon and nitrogen loops is a critical venture to support the establishment of the circular, net‐zero carbon economy. Although single atom catalysts (SACs) have gained interest for the electrochemical reduction reactions of both carbon dioxide (CO 2 RR) and nitrate (NO 3 RR), the structure–activity relationship for Cu SAC coordination for these reactions remains unclear and should be explored such that a fundamental understanding is developed. To this end, the role of the Cu coordination structure is investigated in dictating the activity and selectivity for the CO 2 RR and NO 3 RR. In agreement with the density functional theory calculations, it is revealed that Cu‐N 4 sites exhibit higher intrinsic activity toward the CO 2 RR, whilst both Cu‐N 4 and Cu‐N 4− x ‐C x sites are active toward the NO 3 RR. Leveraging these findings, CO 2 RR and NO 3 RR are coupled for the formation of urea on Cu SACs, revealing the importance of *COOH binding as a critical parameter determining the catalytic activity for urea production. To the best of the authors’ knowledge, this is the first report employing SACs for electrochemical urea synthesis from CO 2 RR and NO 3 RR, which achieves a Faradaic efficiency of 28% for urea production with a current density of − 27 mA cm –2 at − 0.9 V versus the reversible hydrogen electrode.
Antipoisoning Nickel–Carbon Electrocatalyst for Practical Electrochemical CO2 Reduction to CO
Publisher: American Chemical Society (ACS)
Date: 21-10-2019
Mixed‐Metal MOF‐74 Templated Catalysts for Efficient Carbon Dioxide Capture and Methanation
Publisher: Wiley
Date: 04-12-2020
The biochemiresistor: An ultrasensitive biosensor for small organic molecules
Publisher: Wiley
Date: 25-05-2012
Abstract: New sensation: A resistance-based biosensor uses gold-coated magnetic nanoparticles (Au@MNPs) functionalized with the antibiotic enrofloxin (see picture purple), which bind to anti-enrofloxin as analyte (blue). The Au@MNPs can be magnetically assembled between electrodes, and the measured resistance R is a function of analyte concentration.
Nanofluidic voidless electrode for electrochemical capacitance enhancement in gel electrolyte
Publisher: Springer Science and Business Media LLC
Date: 17-09-0100
DOI: 10.1038/S41467-021-25817-8
Abstract: Porous electrodes with extraordinary capacitances in liquid electrolytes are oftentimes incompetent when gel electrolyte is applied because of the escalating ion diffusion limitations brought by the difficulties of infilling the pores of electrode with gels. As a result, porous electrodes usually exhibit lower capacitance in gel electrolytes than that in liquid electrolytes. Benefiting from the swift ion transport in intrinsic hydrated nanochannels, the electrochemical capacitance of the nanofluidic voidless electrode (5.56% porosity) is nearly equal in gel and liquid electrolytes with a difference of ~1.8%. In gel electrolyte, the areal capacitance reaches 8.94 F cm −2 with a gravimetric capacitance of 178.8 F g −1 and a volumetric capacitance of 321.8 F cm −3 . The findings are valuable to solid-state electrochemical energy storage technologies that require high-efficiency charge transport.
Anchoring Sites Engineering in Single‐Atom Catalysts for Highly Efficient Electrochemical Energy Conversion Reactions
Publisher: Wiley
Date: 03-09-2021
Abstract: Single‐atom catalysts (SACs) have been at the frontier of research field in catalysis owing to the maximized atomic utilization, unique structures and properties. The atomically dispersed and catalytically active metal atoms are necessarily anchored by surrounding atoms. As such, the structure and composition of anchoring sites significantly influence the catalytic performance of SACs even with the same metal element. Significant progress has been made to understand structure–activity relationships at an atomic level, but in‐depth understanding in precisely designing highly efficient SACs for the targeted reactions is still required. In this review, various anchoring sites in SACs are summarized and classified into five different types (doped heteroatoms, defect sites, surface atoms, metal sites, and cavity sites). Then, their impacts on catalytic performance are elucidated for electrochemical reactions based on their distance from the metal center (first coordination shell and beyond). Further, SACs anchored on two typical types of hosts, carbon‐ and metal‐based materials, are highlighted, and the effects of anchoring points on achieving the desirable atomic structure, catalytic performance, and reaction pathways are elaborated. At last, insights and outlook to the SAC field based on current achievements and challenges are presented.
Integrated Photocatalytic Filtration Array for Indoor Air Quality Control
Publisher: American Chemical Society (ACS)
Date: 15-06-2010
DOI: 10.1021/ES100421U
Abstract: Photocatalytic and filtration technologies were integrated to develop a hybrid system capable of removing and oxidizing organic pollutants from an air stream. A fluidized bed aerosol generator (FBAG) was adapted to prepare TiO(2)-loaded ventilation filters for the photodegradation of gas phase ethanol. Compared to a manually loaded filter, the ethanol photodegradation rate constant for the FBAG coated filter increased by 361%. Additionally, the presence of the photogenerated intermediate product, acetaldehyde, was reduced and the time for mineralization to CO(2) was accelerated. These improvements were attributed to the FBAG system providing a more uniform distribution of TiO(2) particles across the filter surface leading to greater accessibility by the UV light. A dual-UV-l system, as opposed to a single-l system, enhanced photocatalytic filter performance demonstrating the importance of high light irradiance and light distribution across the filter surface. Substituting the blacklight blue l s with a UV-light-emitting-diode (UV-LED) array led to further improvement as well as suppressed the electrical energy per order (EE/O) by a factor of 6. These improvements derived from the more uniform distribution of light irradiance as well as the higher efficiency of UV-LEDs in converting electrical energy to photons.
Enhancing Ni-SiO 2 catalysts for the carbon dioxide reforming of methane: Reduction-oxidation-reduction pre-treatment
Publisher: Elsevier BV
Date: 12-2016
The Effect of the Freezing Column Diameter on Freezing and Thawing Treatment of Excess Activated Sludge.
Publisher: Informa UK Limited
Date: 2001
DOI: 10.1252/JCEJ.34.1562
Reversible Antimicrobial Photoswitching in Nanosilver
Publisher: Wiley
Date: 29-01-2009
Promoting surface oxygen vacancies on ceria via light pretreatment to enhance catalytic ozonation
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CY01450K
Abstract: Oxygen vacancies catalyzed ozone into hydroxyl radicals which accelerated organic mineralization. Light pre-treatment of ceria intensifies its oxygen vacancy defect levels which are central to its performance in catalytic ozonation.
The effect of platinum and silver deposits in the photocatalytic oxidation of resorcinol
Publisher: Elsevier BV
Date: 03-2007
Probing the charge separation process on In2 S3 /Pt-TiO2 nanocomposites for boosted visible-light photocatalytic hydrogen production
Publisher: Elsevier BV
Date: 12-2016
Low-Temperature CO2 Methanation: Synergistic Effects in Plasma-Ni Hybrid Catalytic System
Publisher: American Chemical Society (ACS)
Date: 06-01-2020
The role of iron in hexavalent chromium reduction by municipal landfill leachate
Publisher: Elsevier BV
Date: 2009
DOI: 10.1016/J.JHAZMAT.2008.04.007
Abstract: The function of iron (ferric (Fe(III)) and ferrous (Fe(II))) in the hexavalent chromium (Cr(VI)) reduction mechanism by bacteria in municipal landfill leachate (MLL) was assessed. Evidence of an "electron shuttle" mechanism was observed, whereby the Cr(VI) was reduced to trivalent chromium (Cr(III)) by Fe(II) with the resulting Fe(III) bacterially re-reduced to Fe(II). Typically, investigations on this electron shuttle mechanism have been performed in an artificial medium. As MLL comprises an elaborate mixture of bacteria, humic materials and organic and inorganic species, additional complexities were evident within the cycle in this study. Bioavailability of the Fe(III) for bacterial reduction, availability of bacterially produced Fe(II) for chemical Cr(VI) reduction and hydrolysis of Fe(II) and Fe(III) become prevalent during each phase of the shuttle cycle when MLL is present. Each of these factors contributes to the overall rate of bacterial Cr(VI) reduction in this media. This work highlights the need to consider local environmental conditions when assessing the bacterial reduction of Cr(VI).
Measurement of Fractal Aggregates of Polydisperse Particles Using Small-Angle Light Scattering
Publisher: Elsevier BV
Date: 2000
Cadmium sulfide Co-catalyst reveals the crystallinity impact of nickel oxide photocathode in photoelectrochemical water splitting
Publisher: Elsevier BV
Date: 08-2019
Hydrophilic tannic acid-modified WS2 nanosheets for enhanced polysulfide conversion in aqueous media
Publisher: IOP Publishing
Date: 20-11-2018
Understanding the Role of Vanadium Vacancies in BiVO4 for Efficient Photoelectrochemical Water Oxidation
Publisher: American Chemical Society (ACS)
Date: 02-04-2021
Nanoscale TiO2 Coatings Improve the Stability of an Earth-Abundant Cobalt Oxide Catalyst during Acidic Water Oxidation
Publisher: American Chemical Society (ACS)
Date: 15-07-2022
Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes
Publisher: Elsevier BV
Date: 07-2007
DOI: 10.1016/J.JHAZMAT.2007.04.049
Abstract: 1,4-dioxane is a synthetic compound found in industrial effluent and subsequently contaminates water bodies due to its high solubility and high volatility. It is of concern due to its toxic and hazardous nature and has been listed as a class 2B carcinogen. This study involved optimisation of the photocatalytic and H(2)O(2)/UVC processes for 1,4-dioxane removal. Different photocatalysts and loadings were investigated for the degradation of low concentrations of 1,4-dioxane in water including a commercial P25, a synthesised magnetic photocatalyst and an immobilised sol-gel system. A commercial catalyst (Degussa P25) was the most efficient. A lifetime study of the sol-gel reactor showed that the coating was stable over the time period studied. The optimum H(2)O(2) concentration in the H(2)O(2)/UVC process was found to be 30ppm. The addition of H(2)O(2) to the photocatalytic process for 1,4-dioxane removal caused a decrease in rate for the commercial P25 photocatalyst and an increase in rate for the lab-made magnetic photocatalyst.
Surface Reconstruction Enabled Efficient Hydrogen Generation on a Cobalt–Iron Phosphate Electrocatalyst in Neutral Water
Publisher: American Chemical Society (ACS)
Date: 03-11-2021
Optimizing Surface Composition and Structure of FeWO4 Photoanodes for Enhanced Water Photooxidation
Publisher: Wiley
Date: 29-01-2023
Abstract: Photoelectrochemical water splitting is a promising approach to produce green hydrogen using solar energy. A primary bottleneck remains the lack of efficient photoanodes to catalyze the sluggish water photooxidation reaction. Engineering photoabsorbers with a narrow bandgap and suitable band edge can boost the photoelectrochemical performance. Herein, nanostructured iron tungstate (FeWO 4 ) photoanodes are engineered directly on a fluorine doped tin oxide glass substrate via a scalable and ultra‐fast flame synthesis route in 13 seconds. Physiochemical, optoelectronic, and electrochemical properties of these photoanodes are systematically investigated. The key roles of charge transport, transfer, and dissolution of W and Fe ions from the FeWO 4 matrix within long‐term performance are revealed. Optimal FeWO 4 photoanode with a bandgap of 1.82 eV and a FeOOH/NiOOH co‐catalyst coating shows an improved water photooxidation performance, reaching a photocurrent density of 0.23 mA cm −2 at 1.4 V versus reversible hydrogen electrode in 1 m potassium hydroxide. It further demonstrates relatively good photostability, maintaining ≈96% of photocurrent density after 1‐hour continuous photooxidation, albeit some trace of Fe, W and Ni elements dissolution. Insights on the photooxidation performance of nanostructured FeWO 4 provide promising directions for the engineering of small band‐gap catalysts for a variety of photoelectrochemical applications.
Harvesting, storing and utilising solar energy using MoO3 : Modulating structural distortion through pH adjustment
Publisher: Wiley
Date: 08-05-2014
Abstract: Nanostructured molybdenum oxide (α-MoO3 ) thin film photoelectrodes were synthesised by anodisation. Upon band gap-excitation by light illumination, α-MoO3 is able to store a portion of the excited charges in its layered structure with the simultaneous intercalation of alkali cations. The stored electrons can be discharged from α-MoO3 for utilisation under dark conditions, and α-MoO3 is able to recharge itself with successive illuminations to behave as a 'self-photo-rechargeable' alkali-ion battery. The alteration of the anodisation pH allowed the crystal structure and oxygen vacancy concentrations of α-MoO3 to be modulated to achieve (i) a distorted MoO6 octahedra for enhanced charge separation and storage, (ii) a layered structure with a greater exposed (010) crystal face for rich and reversible ion intercalation and (iii) a highly crystalline thin film that suppresses electron-hole pair recombination. Overall, the larger MoO6 octahedral distortion in α-MoO3 at a higher pH favours charge storage, whereas smaller octahedral distortion at a lower pH leads to anodic photocurrent enhancement.
High Performance Au-Pd Supported on 3D Hybrid Strontium-Substituted Lanthanum Manganite Perovskite Catalyst for Methane Combustion
Publisher: American Chemical Society (ACS)
Date: 19-09-2016
Dopant-free, polymorphic design of TiO2 nanocrystals by flame aerosol synthesis
Publisher: Elsevier BV
Date: 06-2011
Engineering Multidefects on CexSi1−xO2−δ Nanocomposites for the Catalytic Ozonation Reaction
Publisher: Wiley
Date: 11-11-2022
Abstract: Herein, it is shown that by engineering defects on Ce x Si 1− x O 2− δ nanocomposites synthesized via flame spray pyrolysis, oxygen vacancies can be created with an increased density of trapped electrons, enhancing the formation of reactive oxygen species (ROSs) and hydroxyl radicals in an ozone‐filled environment. Spectroscopic analysis and density functional theory calculations indicate that two‐electron oxygen vacancies (O V 0 ) or peroxide species, and their degree of clustering, play a critical role in forming reactive radicals. It is also found that a higher Si content in the binary oxide imposes a high O V 0 ratio and, consequently, higher catalytic activity. Si inclusion in the nanocomposite appears to stabilize the surface oxygen vacancies as well as increase the reactive electron density at these sites. A mechanistic study on effective ROSs generated during catalytic ozonation reveals that the hydroxyl radical is the most effective ROS for organic degradation and is formed primarily through H 2 O 2 generation in the presence of the O V 0 . Examining the binary oxides offers insights on the contribution of oxygen vacancies and their state of charge to catalytic reactions, in this instance for the catalytic ozonation of organic compounds.
A 2D Conductive Organic–Inorganic Hybrid with Extraordinary Volumetric Capacitance at Minimal Swelling
Publisher: Wiley
Date: 16-05-2018
Abstract: Rational design and synthesis of 2D organic-inorganic hybrid materials is important for transformative technological advances for energy storage. Here, a 2D conductive hybrid lamella and its intercalation properties for thin-film supercapacitors are reported. The 2D organic-inorganic hybrid lamella comprises periodically stacked 2D nanosheets with 11.81 Å basal spacing, and is electronically conductive (605 S m
Designing Undercoordinated Ni–Nx and Fe–Nx on Holey Graphene for Electrochemical CO2 Conversion to Syngas
Publisher: American Chemical Society (ACS)
Date: 07-2021
Abstract: In this study, we propose a top-down approach for the controlled preparation of undercoordinated Ni-N
Altering the influence of ceria oxygen vacancies in Ni/CexSiyO2for photothermal CO2methanation
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CY00136A
Abstract: While the benefit of CeO 2 surface oxygen vacancies for CO 2 methanation is well established, their role under photothermal conditions has not been probed in depth.
N,P co-coordinated Fe species embedded in carbon hollow spheres for oxygen electrocatalysis
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA03011E
Abstract: Carbon hollow spheres (FeNPC) with single-atomic and octahedral FeN x P y active sites are fabricated for oxygen electrocatalysis.
Removal of particles using coagulation and flocculation in a dynamic separator
Publisher: Elsevier BV
Date: 07-1996
A three-way synergy of triple-modified Bi2WO6/Ag/N–TiO2 nanojunction film for enhanced photogenerated charges utilization
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC13159A
Abstract: We demonstrate a general strategy to prepare Bi(2)WO(6)/Ag/N-TiO(2) film with double visible-light-active components bridged by Ag nanoparticles as an electron shuttle, which exhibits enhanced photocatalytic activity and photoelectrochemical performance under visible light.
Understanding Plasmon and Band Gap Photoexcitation Effects on the Thermal-Catalytic Oxidation of Ethanol by TiO2 -Supported Gold
Publisher: American Chemical Society (ACS)
Date: 18-02-2016
Bactericidal effects of titanium dioxide-based photocatalysts
Publisher: Elsevier BV
Date: 10-2005
Effects of Ag and Pt on photocatalytic degradation of endocrine disrupting chemicals in water
Publisher: Elsevier BV
Date: 10-2005
Exploring the origin of enhanced activity and reaction pathway for photocatalytic H2 production on Au/B-TiO2 catalysts
Publisher: American Chemical Society (ACS)
Date: 15-04-2014
DOI: 10.1021/CS5002948
Reduced graphene oxide as a solid-state electron mediator in Z-scheme photocatalytic water splitting under visible light
Publisher: American Chemical Society (ACS)
Date: 06-07-2011
DOI: 10.1021/JA203296Z
Abstract: The effectiveness of reduced graphene oxide as a solid electron mediator for water splitting in the Z-scheme photocatalysis system is demonstrated. We show that a tailor-made, photoreduced graphene oxide can shuttle photogenerated electrons from an O(2)-evolving photocatalyst (BiVO(4)) to a H(2)-evolving photocatalyst (Ru/SrTiO(3):Rh), tripling the consumption of electron-hole pairs in the water splitting reaction under visible-light irradiation.
Photocatalytic degradation of cyanide using titanium dioxide modified with copper oxide
Publisher: Elsevier BV
Date: 10-2002
CFD modelling for a TiO2-coated glass-bead photoreactor irradiated by optical fibres: Photocatalytic degradation of oxalic acid
Publisher: Elsevier BV
Date: 04-2009
Pyrophoricity and stability of copper and platinum based water-gas shift catalysts during oxidative shut-down/start-up operation
Publisher: Elsevier BV
Date: 12-2010
Tracking changes in organic matter during nitrification using fluorescence excitation–emission matrix spectroscopy coupled with parallel factor analysis (FEEM/PARAFAC)
Publisher: Elsevier BV
Date: 02-2018
Hydrothermally Synthesized Titanate Nanostructures: Impact of Heat Treatment on Particle Characteristics and Photocatalytic Properties
Publisher: American Chemical Society (ACS)
Date: 07-10-2011
DOI: 10.1021/AM2008568
Abstract: The role titanate particle structure plays in governing its characteristics upon calcining and their ensuing influence on photocatalytic performance was investigated. Titanate nanotubes and nanoribbons were prepared by hydrothermal treatment of Aeroxide P25 and then calcined at temperatures in the range 200 - 800 °C. Heat treatment directly transformed the nanotubes to anatase while nanoribbon transformation to anatase occurred via a TiO(2)(B) intermediate phase. The nanoribbon structure also provided an increased resistance to sintering, allowing for retention of the original {010} facet of the titanate nanosheets up to 800 °C. The changing material properties with calcining were found to influence the capacity of the particles to photodegrade oxalic acid and methanol. The nanotubes provided an optimum photoactivity following calcination at 500 °C with this point representing a transition between the relative dominance of crystal phase and surface area on performance. The comparatively smaller initial surface area of the nanoribbons consigned this characteristic to a secondary role in influencing photoactivity with the changes to crystal phase dominating the continually improving performance with calcination up to 800 °C. The structural stability imparted by the nanoribbon architecture during calcination, in particular its retention of the {010} facet at temperatures >700 °C, advanced its photocatalytic performance compared with the nanotubes. This was especially the case for methanol photooxidation whose primary degradation mechanism relies on hydroxyl radical attack and was facilitated by the {010} facet. The effect was not as pronounced for oxalic acid due to its higher adsorption on TiO(2) and therefore greater susceptibility to oxidation by photogenerated holes. This study demonstrates that, apart from modulating sintering effects and changes to crystal phase, the titanate nanostructure influences particle crystallography which can be beneficial for photocatalytic performance.
BiVO4 {010} and {110} Relative Exposure Extent: Governing Factor of Surface Charge Population and Photocatalytic Activity
Publisher: American Chemical Society (ACS)
Date: 29-03-2016
DOI: 10.1021/ACS.JPCLETT.6B00428
Abstract: The {010} and {110} crystal facets of monoclinic bismuth vanadate (m-BiVO4) has been demonstrated to be the active reduction and oxidation sites, respectively. Here, we show using dual-faceted m-BiVO4 with distinctly different dominant exposed facets, one which is {010}-dominant and the other {110}-dominant, contrary to prediction, the former m-BiVO4 exhibits superior photooxidation activities. The population of photogenerated electrons and holes on the surface are revealed to be proportional to the respective surface areas of {010} and {110} exposed on m-BiVO4, as evidenced by steady-state photoluminescence (PL) measurements in the presence of charge scavengers. The better photoactivity of {010}-dominant m-BiVO4 is attributed to prompt electron transfer facilitated by the presence of more photogenerated electrons on the larger {010} surface. Additionally, the greater extent of electron trapping in {110}-dominant m-BiVO4 also deteriorates its photoactivity by inducing electron-hole pair recombination.
Optical modeling-assisted characterization of dye-sensitized solar cells using TiO2 nanotube arrays as photoanodes
Publisher: Beilstein Institut
Date: 24-06-2014
DOI: 10.3762/BJNANO.5.102
Abstract: Photovoltaic characteristics of dye-sensitized solar cells (DSSCs) using TiO 2 nanotube (TNT) arrays as photoanodes were investigated. The TNT arrays were 3.3, 11.5, and 20.6 μm long with the pore diameters of 50, 78.6, and 98.7 nm, respectively. The longest TNT array of 20.6 μm in length showed enhanced photovoltaic performances of 3.87% with significantly increased photocurrent density of 8.26 mA·cm −2 . This improvement is attributed to the increased amount of the adsorbed dyes and the improved electron transport property with an increase in TNT length. The initial charge generation rate was improved from 4 × 10 21 s −1 ·cm −3 to 7 × 10 21 s −1 ·cm −3 in DSSCs based on optical modelling analysis. The modelling analysis of optical processes inside TNT-based DSSCs using generalized transfer matrix method (GTMM) revealed that the amount of dye and TNT lengths were critical factors influencing the performance of DSSCs, which is consistent with the experimental results.
Implications of heat treatment on the properties of a magnetic iron oxide–titanium dioxide photocatalyst
Publisher: Elsevier BV
Date: 06-2002
Hybrid PV/T enhancement using selectively absorbing Ag–SiO 2 /carbon nanofluids
Publisher: Elsevier BV
Date: 04-2016
Plasmon enhanced selective electronic pathways in TiO2 supported atomically ordered bimetallic Au-Cu alloys
Publisher: Elsevier BV
Date: 08-2017
Nanoscale Titanium Surface Engineering via Low-Temperature Hydrothermal Etching for Enhanced Antimicrobial Properties
Publisher: American Chemical Society (ACS)
Date: 22-09-2023
Landfill Management, Leachate Generation, and Leach Testing of Solid Wastes in Australia and Overseas
Publisher: Informa UK Limited
Date: 23-03-2005
Synthesis of porous and visible-light absorbing Bi 2WO 6/TiO 2 heterojunction films with improved photoelectrochemical and photocatalytic performances
Publisher: American Chemical Society (ACS)
Date: 24-03-2011
DOI: 10.1021/JP1090137
Insight towards the role of platinum in the photocatalytic mineralisation of organic compounds
Publisher: Elsevier BV
Date: 02-2007
Highly Selective and Stable Reduction of CO2 to CO by a Graphitic Carbon Nitride/Carbon Nanotube Composite Electrocatalyst
Publisher: Wiley
Date: 12-07-2016
Abstract: A stable and selective electrocatalyst for CO2 reduction was fabricated by covalently attaching graphitic carbon nitride onto multiwall carbon nanotubes (g-C3 N4 /MWCNTs). The as-prepared composite is able to reduce CO2 exclusively to CO with a maximum Faraday efficiency of 60 %, and no decay in the catalytic activity was observed even after 50 h of reaction. The enhanced catalytic activity towards CO2 reduction is attributed to the formation of active carbon-nitrogen bonds, high specific surface area, and improved material conductivity of the g-C3 N4 /MWCNT composite.
Computational fluid dynamics modelling and optimal configuring of a channelled optical fibre photoreactor
Publisher: Elsevier BV
Date: 09-2010
The Effect of Floc Size and Structure on Specific Cake Resistance and Compressibility in Dead-End Microfiltration
Publisher: Informa UK Limited
Date: 03-01-2003
DOI: 10.1081/SS-120017631
Impact of zinc on biologically mediated monochloramine decay in waters from a field based pilot scale drinking water distribution system
Publisher: Elsevier BV
Date: 05-2018
Plasma Treating Mixed Metal Oxides to Improve Oxidative Performance via Defect Generation
Publisher: MDPI AG
Date: 27-08-2019
DOI: 10.3390/MA12172756
Abstract: The generation of structural defects in metal oxide catalysts offers a potential pathway to improve performance. Herein, we investigated the effect of thermal hydrogenation and low-temperature plasma treatments on mixed SiO2/TiO2 materials. Hydrogenation at 500 °C resulted in the reduction of the material to produce Ti3+ in the bulk TiO2. In contrast, low temperature plasma treatment for 10 or 20 min generated surface Ti3+ species via the removal of oxygen on both the neat and hydrogenated material. Assessing the photocatalytic activity of the materials demonstrated a 40–130% increase in the rate of formic acid oxidation after plasma treatment. A strong relationship between the Ti3+ content and catalyst activity was established, although a change in the Si–Ti interaction after plasma treating of the neat SiO2/TiO2 material was found to limit performance, and suggests that performance is not determined solely by the presence of Ti3+.
The role of copper(II) ions in the photocatalytic oxidation of 1,4-dioxane
Publisher: Elsevier BV
Date: 12-2007
Thiol functionalisation of gold-coated magnetic nanoparticles: Enabling the controlled attachment of functional molecules
Publisher: IEEE
Date: 02-2010
Highly cross-linked carbon sponge enables room-temperature long-life semi-liquid Na/polysulfide battery
Publisher: Elsevier BV
Date: 12-2019
Photocorrosion of Cuprous Oxide in Hydrogen Production: Rationalising Self‐Oxidation or Self‐Reduction
Publisher: Wiley
Date: 11-09-2018
Abstract: Cuprous Oxide (Cu
Understanding the enhancement in photoelectrochemical properties of photocatalytically prepared TiO 2-reduced graphene oxide composite
Publisher: American Chemical Society (ACS)
Date: 09-03-2011
DOI: 10.1021/JP1113575
Sodium fluoride-assisted modulation of anodized TiO 2 nanotube for dye-sensitized solar cells application
Publisher: American Chemical Society (ACS)
Date: 22-04-2011
DOI: 10.1021/AM200147B
Abstract: This work reports the use of sodium fluoride (in ethylene glycol electrolyte) as the replacement of hydrofluoric acid and ammonium fluoride to fabricate long and perpendicularly well-aligned TiO₂ nanotube (TNT) (up to 21 μm) using anodization. Anodizing duration, applied voltage and electrolyte composition influenced the geometry and surface morphologies of TNT. The growth mechanism of TNT is interpreted by analyzing the current transient profile and the total charge density generated during anodization. The system with low water content (2 wt %) yielded a membrane-like mesoporous TiO₂ film, whereas high anodizing voltage (70 V) resulted in the unstable film of TNT arrays. An optimized condition using 5 wt % water content and 60 V of anodizing voltage gave a stable array of nanotube with controllable length and pore diameter. Upon photoexcitation, TNTs synthesized under this condition exhibited a slower charge recombination rate as nanotube length increased. When made into cis-diisothiocyanato-bis(2,2̀-bipyridyl-4,4̀-dicarboxylato) ruthenium(II) bis (tetrabutyl-ammonium)(N719) dye-sensitized solar cells, good device efficiency at 3.33 % based on the optimized TNT arrays was achieved with longer electron time compared with most mesoporous TiO₂ films.
Back Cover: Highly Selective and Stable Reduction of CO2 to CO by a Graphitic Carbon Nitride/Carbon Nanotube Composite Electrocatalyst (Chem. Eur. J. 34/2016)
Publisher: Wiley
Date: 12-07-2016
Fractal structure of hematite aggregates
Publisher: Elsevier BV
Date: 11-1990
The formation of nano-sized selenium-titanium dioxide composite semiconductors by photocatalysis
Publisher: Springer Science and Business Media LLC
Date: 2002
Scattering Behavior of Restructured Aggregates: A Simulation Study
Publisher: Elsevier BV
Date: 09-2001
Pulsed Electrodeposition of Co3O4 Nanocrystals on One‐Dimensional ZnO Scaffolds for Enhanced Electrochemical Water Oxidation
Publisher: Wiley
Date: 24-08-2018
Abstract: Pulsed electrodeposition has been introduced to deposit ultrathin flakes of Co
Effects of nano-Ag particles loading on TiO2 photocatalytic reduction of selenate ions
Publisher: Elsevier BV
Date: 09-2003
Photocatalytic reduction of Se(VI) in aqueous solutions in UV/TiO2 system: importance of optimum ratio of reactants on TiO2 surface
Publisher: Elsevier BV
Date: 08-2003
Electrophoresis-A new approach for the determination of organic matters adsorption on irradiated TiO2
Publisher: Elsevier BV
Date: 03-2007
Tailoring the conduction band of titanium oxide by doping tungsten for efficient electron injection in a sensitized photoanode
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3NR05456J
Abstract: The combination of finely tuned chemical and optical properties of the photoanode material enabled a further enhancement of the dye-sensitized solar cell performance.
Epitaxial Growth of Au–Pt–Ni Nanorods for Direct High Selectivity H2 O2 Production
Publisher: Wiley
Date: 17-10-2016
Abstract: Au-Ni core-shell nanorods (NRs) and Au-Pt-Ni core-sandwich-shell NRs are synthesized and exhibit high activity for selective H
Polyurethane sponge facilitating highly dispersed TiO2 nanoparticles on reduced graphene oxide sheets for enhanced photoelectro-oxidation of ethanol
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA04203H
Abstract: Sponge-template TiO 2 -reduced graphene oxide (RGO) is prepared with improved dispersion of TiO 2 on RGO sheets for efficient photoelectro-oxidation of ethanol.
Ultrathin Fe-N-C Nanosheets Coordinated Fe-Doped CoNi Alloy Nanoparticles for Electrochemical Water Splitting
Publisher: Wiley
Date: 12-09-2019
Morphological evolution and electronic alteration of ZnO nanomaterials induced by Ni/Fe co-doping
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4NR01058B
Abstract: Zinc oxide (ZnO) nanocrystals mono- and co-doped with nickel/iron were prepared using a facile solvothermal procedure. A significant change in the surface morphology from nanorods to plate-like nanoparticles was observed with an increase in the dopant concentration. The variations of their optical and electronic properties induced by metal dopants were investigated using a combination of characterization techniques and ab initio calculations. It is found that both nickel and iron atoms have been successfully incorporated into the crystal lattice rather than forming a secondary phase, suggesting good dispersion of dopants within the ZnO matrix. Doping with iron has red-shifted the absorption edges of ZnO towards the visible portion resulting in lower band gap energies with increasing dopant concentration. Evidenced by Raman and EPR spectroscopy, the addition of iron has been shown to promote the formation of more oxygen vacancy and crystal defects within the host lattice as well as increasing the free-electron density of the nanomaterial. The DFT plus Hubbard model calculations confirm that low concentration Ni-doping does not induce band gap narrowing but results in localized states. The calculations show that Fe-doping has the potential to greatly improve the optical absorption characteristics and lead to structural deformation, corroborating the UV-Vis, Raman, and EPR spectra.
Ternary MnO/CoMn alloy@N-doped graphitic composites derived from a bi-metallic pigment as bi-functional electrocatalysts
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA08016C
Abstract: A composite comprising a CoMn alloy coated with N-doped graphitic carbon (CoMn@NC) and MnO was fabricated by a single-step pyrolysis of a Prussian blue analogue, showing superior activity and stability for both the ORR and OER.
Direct insights into the role of epoxy groups on cobalt sites for acidic H2O2 production
Publisher: Springer Science and Business Media LLC
Date: 21-08-2020
DOI: 10.1038/S41467-020-17782-5
Abstract: Hydrogen peroxide produced by electrochemical oxygen reduction reaction provides a potentially cost effective and energy efficient alternative to the industrial anthraquinone process. In this study, we demonstrate that by modulating the oxygen functional groups near the atomically dispersed cobalt sites with proper electrochemical/chemical treatments, a highly active and selective oxygen reduction process for hydrogen peroxide production can be obtained in acidic electrolyte, showing a negligible amount of onset overpotential and nearly 100% selectivity within a wide range of applied potentials. Combined spectroscopic results reveal that the exceptionally enhanced performance of hydrogen peroxide generation originates from the presence of epoxy groups near the Co–N 4 centers, which has resulted in the modification of the electronic structure of the cobalt atoms. Computational modeling demonstrates these electronically modified cobalt atoms will enhance the hydrogen peroxide productivity during oxygen reduction reaction in acid, providing insights into the design of electroactive materials for effective peroxide production.
Tunable Syngas Production through CO2 Electroreduction on Cobalt–Carbon Composite Electrocatalyst
Publisher: American Chemical Society (ACS)
Date: 05-02-2020
Multi-wavelength spectroscopic and chromatography study on the photocatalytic oxidation of natural organic matter
Publisher: Elsevier BV
Date: 04-2010
DOI: 10.1016/J.WATRES.2010.01.036
Abstract: The effect of TiO2 photocatalytic oxidation on the natural organic matter (NOM) properties of two Australian surface waters were quantified using UV-vis spectroscopy, high performance size exclusion chromatography (HPSEC) with a multi-wavelength UV detector, liquid chromatography with organic carbon detector (LC-OCD), and trihalomethane formation potential (THMFP) analyses. Both the UV absorbance at wavelengths greater than 250 nm and dissolved organic carbon (DOC) content decreased significantly with treatment, although complete mineralization of NOM could not be achieved. Multi-wavelength UV detection of HPSEC analysis was shown to be useful to display further changes to NOM composition and molecular weight profiles because the organic molecules was transformed into compounds that absorb weakly at the typical detection wavelength of 250-260 nm. The multi-wavelength HPSEC results also revealed that photocatalytic oxidation yields by-products with a low aromaticity and low molecular weight. The LC-OCD chromatograms indicated that low molecular acids and neutral compounds remained after photocatalytic oxidation. Those groups of compounds did not seem to contribute significantly to the formation of trihalomethanes.
The Impact of La Doping on Dry Reforming Ni-Based Catalysts Loaded on FSP-Alumina
Publisher: Springer Science and Business Media LLC
Date: 02-07-2018
Clarifying the role of silver deposits on titania for the photocatalytic mineralisation of organic compounds
Publisher: Elsevier BV
Date: 09-2006
A comparison of carbon footprints of magnesium oxide and magnesium hydroxide produced from conventional processes
Publisher: Elsevier BV
Date: 11-2018
Inter-relationship between Pt oxidation states on TiO2 and the photocatalytic mineralisation of organic matters
Publisher: Elsevier BV
Date: 10-2007
Enhanced Visible Light-Induced Charge Separation and Charge Transport in Cu2O-Based Photocathodes by Urea Treatment
Publisher: American Chemical Society (ACS)
Date: 02-09-2015
Abstract: Carrier density, photocharge transfer kinetics, and charge transfer resistance of the anodized Cu-Cu2O-CuO photocathode were greatly improved using thermal treatment with urea. Time-correlated single-photon counting (TCSPC) results revealed the faster electron transfer kinetics from Cu2O to CuO in the urea-treated Cu-Cu2O-CuO composite photoelectrodes. Preservation of the metallic copper component via the intermediate Cu3N during the treatment facilitated higher bulk conductance of the Cu-Cu2O-CuO photocathode for improved charge transport. Higher carrier density was also observed in the urea-treated photoelectrode, which was possibly attributed to the presence of nitrogen as a dopant. Furthermore, the compact outer layer of CuO protected the underlayer Cu2O from being in direct contact with the aqueous solution. This suppressed the photocorrosion of Cu2O and resulted in the higher photostability of the Cu-Cu2O-CuO film. When these advantages were combined, the urea-treated Cu-Cu2O-CuO film showed a higher photocurrent of 2.2 mA/cm2 and improved stability versus that of the conventional Cu-Cu2O-CuO film (1.2 mA/cm2). To improve the charge transfer kinetics and carrier density, this paper provides a new strategy for synthesizing effective and stable Cu2O-based photoelectrodes by using urea treatment.
Oxygen Electrocatalysis at MnIII–Ox–C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?
Publisher: American Chemical Society (ACS)
Date: 30-11-2019
Abstract: The interface at the metal oxide-carbon hybrid heterojunction is the source to the well-known "synergistic effect" in catalysis. Understanding the structure-function properties is key for designing more advanced catalyst-support systems. Using a model Mn
Construction of a Bi2MoO6:Bi2Mo3O12 heterojunction for efficient photocatalytic oxygen evolution
Publisher: Elsevier BV
Date: 12-2018
Induced adaptation of Bacillus sp. to antimicrobial nanosilver
Publisher: Wiley
Date: 29-04-2013
Abstract: The natural ability of Bacillus sp. to adapt to nanosilver cytotoxicity upon prolonged exposure is reported for the first time. The combined adaptive effects of nanosilver resistance and enhanced growth are induced under various intensities of nanosilver-stimulated cellular oxidative stress, ranging from only minimal cellular redox imbalance to the lethal levels of cellular ROS stimulation. An important implication of the present work is that such adaptive effects lead to the ultimate domination of nanosilver-resistant Bacillus sp. in the microbiota, to which nanosilver cytotoxicity is continuously applied.
Complete surface coverage of ZnO nanorod arrays by pulsed electrodeposited CuInS<inf>2</inf> for visible light energy conversion
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5DT00429B
Abstract: Photosensitized ZnO nanorods uniformly coated with CuInS 2 nanoparticles from sequentially pulsed-electrodeposition yielded superior charge transfer ability and great enhancement in photoelectrochemical performance under visible light irradiation.
Photo-driven synthesis of polymer-coated platinized ZnO nanoparticles with enhanced photoelectrochemical charge transportation
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10665J
Abstract: A ZnO photocatalyst decorated with platinum nanoparticles and a thin, uniform layer of phenol-derived polymer demonstrated enhanced transportation of photogenerated charge.
One-Dimensional TiO2 Nanostructured Photoanodes: From Dye-Sensitised Solar Cells to Perovskite Solar Cells
Publisher: MDPI AG
Date: 06-12-2016
DOI: 10.3390/EN9121030
The effect of pH on UV-based advanced oxidation technologies – 1,4-Dioxane degradation
Publisher: Elsevier BV
Date: 10-2010
DOI: 10.1016/J.JHAZMAT.2010.06.001
Abstract: 1,4-Dioxane, is a synthetic organic compound used widely throughout industry as a solvent. 1,4-Dioxane causes liver damage and kidney failure and has been shown to be carcinogenic to animals, and is a potential carcinogen to humans. Its recalcitrant nature means that conventional water treatment methods are ineffective in removing it from water. A class of technologies called advanced oxidation technologies has been shown to completely mineralise 1,4-dioxane. In this study the effects of pH on TiO(2) photocatalysis reactor systems were investigated. pH was found to significantly affect the efficiencies of these processes with neutral pH conditions the most effective.
Submicron and nano formulations of titanium dioxide and zinc oxide stimulate unique cellular toxicological responses in the green microalga Chlamydomonas reinhardtii
Publisher: Elsevier BV
Date: 09-2013
DOI: 10.1016/J.JHAZMAT.2013.06.067
Abstract: The work investigates the eco-cytoxicity of submicron and nano TiO₂ and ZnO, arising from the unique interactions of freshwater microalga Chlamydomonas reinhardtii to soluble and undissolved components of the metal oxides. In a freshwater medium, submicron and nano TiO₂ exist as suspended aggregates with no-observable leaching. Submicron and nano ZnO undergo comparable concentration-dependent fractional leaching, and exist as dissolved zinc and aggregates of undissolved ZnO. Cellular internalisation of solid TiO₂ stimulates cellular ROS generation as an early stress response. The cellular redox imbalance was observed for both submicron and nano TiO₂ exposure, despite exhibiting benign effects on the alga proliferation (8-day EC50>100 mg TiO₂/L). Parallel exposure of C. reinhardtii to submicron and nano ZnO saw cellular uptake of both the leached zinc and solid ZnO and resulting in inhibition of the alga growth (8-day EC50≥0.01 mg ZnO/L). Despite the sensitivity, no zinc-induced cellular ROS generation was detected, even at 100 mg ZnO/L exposure. Taken together, the observations confront the generally accepted paradigm of cellular oxidative stress-mediated cytotoxicity of particles. The knowledge of speciation of particles and the corresponding stimulation of unique cellular responses and cytotoxicity is vital for assessment of the environmental implications of these materials.
Light soaking effect driven in porphyrin dye-sensitized solar cells using 1D TiO2 nanotube photoanodes
Publisher: Elsevier BV
Date: 07-2020
N,P Co‐Coordinated Manganese Atoms in Mesoporous Carbon for Electrochemical Oxygen Reduction
Publisher: Wiley
Date: 20-01-2019
Abstract: The increasing interest in fuel cell technology encourages the development of efficient and low-cost electrocatalysts to replace the Pt based materials for catalyzing the cathodic oxygen reduction reaction (ORR). In the present work, a nitrogen and phosphorus co-coordinated manganese atom embedded mesoporous carbon composite (MnNPC-900) is successfully prepared via a polymerization of o-phenylenediamine followed by calcination at 900 °C. The MnNPC-900 composite shows a high ORR activity in alkaline media, offering an onset potential of 0.97 V, and a half-wave potential of 0.84 V (both vs reversible hydrogen electrode) with a loading of 0.4 mg cm
Effect of shear schedule on particle size, density, and structure during flocculation in stirred tanks
Publisher: Elsevier BV
Date: 06-1998
Recent advances in ordered meso/macroporous metal oxides for heterogeneous catalysis: a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10896B
Abstract: The present review article highlights the preparation, characterization, properties, and recent developments in porous metal oxide catalysts for heterogeneous catalysis.
Adsorption of T4 bacteriophages on planar indium tin oxide surface via controlled surface tailoring
Publisher: Elsevier BV
Date: 04-2016
DOI: 10.1016/J.JCIS.2016.01.052
Abstract: The work investigates the influence of surface physicochemical properties of planar indium tin oxide (ITO) as a model substrate on T4 bacteriophage adsorption. A comparative T4 bacteriophage adsorption study shows a significant difference in bacteriophage adsorption observed on chemically modified planar ITO when compared to similarly modified particulate ITO, which infers that trends observed in virus-particle interaction studies are not necessarily transferrable to predict virus-planar surface adsorption behaviour. We also found that ITO surfaces modified with methyl groups, (resulting in increased surface roughness and hydrophobicity) remained capable of adsorbing T4 bacteriophage. The adsorption of T4 onto bare, amine and carboxylic functionalised planar ITO suggests the presence of a unique binding behaviour involving specific functional groups on planar ITO surface beyond the non-specific electrostatic interactions that dominate phage to particle interactions. The paper demonstrates the significance of physicochemical properties of surfaces on bacteriophage-surface interactions.
Inducing synergy in bimetallic RhNi catalysts for CO2 methanation by galvanic replacement
Publisher: Elsevier BV
Date: 11-2020
Monolithic Integration of Anodic Molybdenum Oxide Pseudocapacitive Electrodes on Screen-Printed Silicon Solar Cells for Hybrid Energy Harvesting-Storage Systems
Publisher: Wiley
Date: 20-12-2017
Rapid determination of fractal structure of bacterial assemblages in wastewater treatment: Implications to process optimisation
Publisher: IWA Publishing
Date: 1998
Gas Transition: Renewable Hydrogen’s Future in Eastern Australia’s Energy Networks
Publisher: MDPI AG
Date: 07-2021
DOI: 10.3390/EN14133968
Abstract: The energy transition for a net-zero future will require deep decarbonisation that hydrogen is uniquely positioned to facilitate. This technoeconomic study considers renewable hydrogen production, transmission and storage for energy networks using the National Electricity Market (NEM) region of Eastern Australia as a case study. Plausible growth projections are developed to meet domestic demands for gas out to 2040 based on industry commitments and scalable technology deployment. Analysis using the discounted cash flow technique is performed to determine possible levelised cost figures for key processes out to 2050. Variables include geographic limitations, growth rates and capacity factors to minimise abatement costs compared to business-as-usual natural gas forecasts. The study provides an optimistic outlook considering renewable power-to-X opportunities for blending, replacement and gas-to-power to show viable pathways for the gas transition to green hydrogen. Blending is achievable with modest (3%) green premiums this decade, and substitution for natural gas combustion in the long-term is likely to represent an abatement cost of AUD 18/tCO2-e including transmission and storage.
Photodeposition of CdSe using Se-TiO2 suspensions as photocatalysts
Publisher: Elsevier BV
Date: 04-2006
Carbon-Based Metal-Free Catalysts for Electrocatalytic Reduction of Nitrogen for Synthesis of Ammonia at Ambient Conditions
Publisher: Wiley
Date: 16-01-2019
Abstract: The electrocatalytic nitrogen reduction reaction (NRR) is a promising catalytic system for N
Tiny Particles with Big Impacts on Clean Future Energy
Publisher: Wiley
Date: 04-2017
Harnessing the Beneficial Attributes of Ceria and Titania in a Mixed-Oxide Support for Nickel-Catalyzed Photothermal CO 2 Methanation
Publisher: Elsevier BV
Date: 06-2017
Understanding the role of restructuring in flocculation: The application of a population balance model
Publisher: Elsevier BV
Date: 2003
Effects of Fe3+ and Ag+ ions on the photocatalytic degradation of sucrose in water
Publisher: Elsevier BV
Date: 07-2001
Dots versus antidots: Computational exploration of structure, magnetism, and half-metallicity in boron-nitride nanostructures
Publisher: American Chemical Society (ACS)
Date: 10-11-2009
DOI: 10.1021/JA9071942
Abstract: Triangle-shaped nanohole, nanodot, and lattice antidot structures in hexagonal boron-nitride (h-BN) monolayer sheets are characterized with density functional theory calculations utilizing the local spin density approximation. We find that such structures may exhibit very large magnetic moments and associated spin splitting. N-terminated nanodots and antidots show strong spin anisotropy around the Fermi level, that is, half-metallicity. While B-terminated nanodots are shown to lack magnetism due to edge reconstruction, B-terminated nanoholes can retain magnetic character due to the enhanced structural stability of the surrounding two-dimensional matrix. In spite of significant lattice contraction due to the presence of multiple holes, antidot super lattices are predicted to be stable, exhibiting lified magnetism as well as greatly enhanced half-metallicity. Collectively, the results indicate new opportunities for designing h-BN-based nanoscale devices with potential applications in the areas of spintronics, light emission, and photocatalysis.
Microstructural Engineering of Cathode Materials for Advanced Zinc‐Ion Aqueous Batteries
Publisher: Wiley
Date: 19-11-2020
Abstract: Zinc‐ion batteries (ZIBs) have attracted intensive attention due to the low cost, high safety, and abundant resources. However, up to date, challenges still exist in searching for cathode materials with high working potential, excellent electrochemical activity, and good structural stability. To address these challenges, microstructure engineering has been widely investigated to modulate the physical properties of cathode materials, and thus boosts the electrochemical performances of ZIBs. Here, the recent research efforts on the microstructural engineering of various ZIB cathode materials are mainly focused upon, including composition and crystal structure selection, crystal defect engineering, interlayer engineering, and morphology design. The dependency of cathode performance on aqueous electrolyte for ZIB is further discussed. Finally, future perspectives and challenges on microstructure engineering of cathode materials for ZIBs are provided. It is aimed to provide a deep understanding of the microstructure engineering effect on Zn 2+ storage performance.
Experimental Results for Tailored Spectrum Splitting Metallic Nanofluids for c-Si, GaAs, and Ge Solar Cells
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2019
Photochemical synthesis of chlorine gas from iron(III) and chloride solution
Publisher: Elsevier BV
Date: 09-2006
Preparation of high porous Pt-V 2O 5-WO 3/TiO 2/SiC filter for simultaneous removal of NO and particulates
Publisher: Elsevier BV
Date: 2008
Comparison of photocatalytic degradation of natural organic matter in two Australian surface waters using multiple analytical techniques
Publisher: Elsevier BV
Date: 02-2010
Elucidating the impact of Ni and Co loading on the selectivity of bimetallic NiCo catalysts for dry reforming of methane
Publisher: Elsevier BV
Date: 11-2018
Photocatalytic oxidation of cyanide: Kinetic and mechanistic studies
Publisher: Elsevier BV
Date: 02-2003
Impact of Cu oxidation state on photocatalytic H2 production by Cu/TiO2
Publisher: IEEE
Date: 02-2014
Catalytic Metal Foam by Chemical Melting and Sintering of Liquid Metal Nanoparticles
Publisher: Wiley
Date: 25-11-2020
Investigating the preparation parameters during the synthesis of CuInS2 thin film photoelectrodes
Publisher: IEEE
Date: 02-2014
Photocatalytic reduction of selenium ions using different TiO2 photocatalysts
Publisher: Elsevier BV
Date: 11-2005
Impurity Tolerance of Unsaturated Ni-N-C Active Sites for Practical Electrochemical CO2 Reduction
Publisher: American Chemical Society (ACS)
Date: 09-02-2022
Recent advances in flexible batteries: From materials to applications
Publisher: Springer Science and Business Media LLC
Date: 02-09-2021
Chloramine demand estimation using surrogate chemical and microbiological parameters
Publisher: Elsevier BV
Date: 07-2016
DOI: 10.1016/J.JES.2017.01.010
Abstract: A model is developed to enable estimation of chloramine demand in full scale drinking water supplies based on chemical and microbiological factors that affect chloramine decay rate via nonlinear regression analysis method. The model is based on organic character (specific ultraviolet absorbance (SUVA)) of the water s les and a laboratory measure of the microbiological (F
Photocatalysis in TiO2 aqueous suspension: Effects of mono- or di-hydroxyl substitution of butanedioic acid on the disappearance and mineralisation rates
Publisher: Elsevier BV
Date: 12-2011
Effect of charge trapping species of cupric ions on the photocatalytic oxidation of resorcinol
Publisher: Elsevier BV
Date: 28-01-2005
Copper Complex in Poly(vinyl chloride) as a Nitric Oxide-Generating Catalyst for the Control of Nitrifying Bacterial Biofilms
Publisher: American Chemical Society (ACS)
Date: 06-10-2015
Abstract: In this study, catalytic generation of nitric oxide by a copper(II) complex embedded within a poly(vinyl chloride) matrix in the presence of nitrite (source of nitric oxide) and ascorbic acid (reducing agent) was shown to effectively control the formation and dispersion of nitrifying bacteria biofilms. Amperometric measurements indicated increased and prolonged generation of nitric oxide with the addition of the copper complex when compared to that with nitrite and ascorbic acid alone. The effectiveness of the copper complex-nitrite-ascorbic acid system for biofilm control was quantified using protein analysis, which showed enhanced biofilm suppression when the copper complex was used in comparison to that with nitrite and ascorbic acid treatment alone. Confocal laser scanning microscopy (CLSM) and LIVE/DEAD staining revealed a reduction in cell surface coverage without a loss of viability with the copper complex and up to 5 mM of nitrite and ascorbic acid, suggesting that the nitric oxide generated from the system inhibits proliferation of the cells on surfaces. Induction of nitric oxide production by the copper complex system also triggered the dispersal of pre-established biofilms. However, the addition of a high concentration of nitrite and ascorbic acid to a pre-established biofilm induced bacterial membrane damage and strongly decreased the metabolic activity of planktonic and biofilm cells, as revealed by CLSM with LIVE/DEAD staining and intracellular adenosine triphosphate measurements, respectively. This study highlights the utility of the catalytic generation of nitric oxide for the long-term suppression and removal of nitrifying bacterial biofilms.
Embedment of anodized p-type Cu2O thin films with CuO nanowires for improvement in photoelectrochemical stability
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3NR34012K
Abstract: A highly stable p-type cuprous oxide (Cu2O) photoelectrode has been fabricated by direct anodization of the Cu foil, followed by a thermal treatment to introduce a protective layer of copper oxide (CuO) nanowires penetrating the surface of the Cu2O layer. The anodized Cu2O served as the seeding sites for the growth of CuO nanowires. The embedment of CuO nanowires within the Cu2O matrix enhanced the adhesion of the nanowires onto the Cu substrate. In addition, the presence of CuO nanowires on the outer layer of the composite film, in turn stabilized the Cu2O layer by passivating the redox activities of Cu2O when exposed to the environment. This nanostructured p-type Cu2O photoelectrode generated 360 μA cm(-2) of photocathodic current density upon visible light illumination and managed to retain its photocathodic current density after being used and kept for one month. The improvement in photoelectrochemical (PEC) stability by introducing a passive layer of CuO nanowires provides useful insights into the development of a Cu2O photoelectrode, as its stability remained as the main challenge.
Frequency-regulated pulsed electrodeposition of CuInS2 on ZnO nanorod arrays as visible light photoanodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03255E
Abstract: High quality coating of vertically aligned ZnO nanorods with CuInS 2 nanoparticles is achieved by a pulse-regulated electrodeposition method.
Removal of contaminants of concern in water using advance oxidation techniques
Publisher: IWA Publishing
Date: 06-2007
DOI: 10.2166/WST.2007.421
Abstract: This research involves the removal of contaminants of concern in water supplies using advanced oxidation technologies, in particular titanium dioxide photocatalysis. Photocatalysis for the removal of 1,4-dioxane and the natural (17β-oestradiol, oestriol) and synthetic (17α-ethynyloestradiol) oestrogens in water was investigated using both UVA and solar radiation. The H2O2/UVC process, solar, UVC and UVA light alone were also investigated and the processes compared. It was found that TiO2 photocatalysis is an effective method for the degradation of the natural (17β-oestradiol and oestriol) and the synthetic (17α-ethynyloestradiol) oestrogens in water in immobilised Degussa P25 and sol-gel spiral reactors with both UVA and solar radiation as the light source. Photocatalysis using the commercial catalyst Degussa P25 as an immobilised reactor with a UVA l shows the best performance. Photocatalysis was shown to completely mineralise 1,4-dioxane to CO2 in Degussa P25 suspension and sol-gel reactors using both UVA and solar radiation. The commercial catalyst Degussa P25 in suspension with UVA radiation shows the best performance. Photocatalysis is much more efficient than H2O2/UVC, UVA, UVC and solar radiation alone for all contaminants investigated.
Photocatalytic and Photoelectrochemical Systems: Similarities and Differences
Publisher: Wiley
Date: 09-12-2020
Abstract: Photocatalytic and photoelectrochemical processes are two key systems in harvesting sunlight for energy and environmental applications. As both systems are employing photoactive semiconductors as the major active component, strategies have been formulated to improve the properties of the semiconductors for better performances. However, requirements to yield excellent performances are different in these two distinctive systems. Although there are universal strategies applicable to improve the performance of photoactive semiconductors, similarities and differences exist when the semiconductors are to be used differently. Here, considerations on selected typical factors governing the performances in photocatalytic and photoelectrochemical systems, even though the same type of semiconductor is used, are provided. Understanding of the underlying mechanisms in relation to their photoactivities is of fundamental importance for rational design of high-performing photoactive materials, which may serve as a general guideline for the fabrication of good photocatalysts or photoelectrodes toward sustainable solar fuel generation.
Highly Selective Metal‐Free Electrochemical Production of Hydrogen Peroxide on Functionalized Vertical Graphene Edges
Publisher: Wiley
Date: 05-11-2022
Abstract: Electrochemical generation of hydrogen peroxide (H 2 O 2 ) is an attractive alternative to the energy‐intensive anthraquinone oxidation process. Metal‐free carbon‐based materials such as graphene show great promise as efficient electrocatalysts in alkaline media. In particular, the graphene edges possess superior electrochemical properties than the basal plane. However, identification and enhancement of the catalytically active sites at the edges remain challenging. Furthermore, control of surface wettability to enhance gas diffusion and promote the performance in bulk electrolysis is largely unexplored. Here, a metal‐free edge‐rich vertical graphene catalyst is synthesized and exhibits a superior performance for H 2 O 2 production, with a high onset potential (0.8 V versus reversible hydrogen electrode (RHE) at 0.1 mA cm −2 ) and 100% Faradaic efficiency at various potentials. By tailoring the oxygen‐containing functional groups using various techniques of electrochemical oxidation, thermal annealing and oxygen plasma post‐treatment, the edge‐bound in‐plane ether‐type (COC) groups are revealed to account for the superior catalytic performance. To manipulate the surface wettability, a simple vacuum‐based method is developed to effectively induce material hydrophobicity by accelerating hydrocarbon adsorption. The increased hydrophobicity greatly enhances gas transfer without compromising the Faradaic efficiency, enabling a H 2 O 2 productivity of 1767 mmol g catalyst −1 h −1 at 0.4 V versus RHE.
Understanding self-photorechargeability of WO3 for H2 generation without light illumination
Publisher: Wiley
Date: 15-01-2013
Abstract: This work presents insight into the self-photorechargeability of WO(3), whereby the intercalation of positive alkali cations is accompanied by the simultaneous storage of photo-excited electrons. The cyclic voltammetry studies verify the photo-assisted intercalation and de-intercalation of Na(+) and K(+) from the flower structured WO(3). A storage capacity of up to 0.722 C cm(-2) can be achieved in a saturated (0.68 M) K(2)SO(4) electrolyte solution. However, the best photo recharge-discharge stability of the electrode are observed at a lower (0.1 M) cation concentration. At high electrolyte concentrations, the intercalated cations are firmly trapped, as indicated by the structural modifications observed in Raman analysis, resulting in much less photocharging and discharging abilities in subsequent cycles. The study also shows that the stored electrons can be successfully used to generate H(2) with 100 % faradaic efficiency in the absence of light.
Decorating platinum on nitrogen-doped graphene sheets: Control of the platinum particle size distribution for improved photocatalytic H2 generation
Publisher: Elsevier BV
Date: 02-2019
Doping-Mediated Metal–Support Interaction Promotion toward Light-Assisted Methanol Production over Cu/ZnO/Al2O3
Publisher: American Chemical Society (ACS)
Date: 27-04-2021
Dense TiO2 thin film: Photoelectrochemical and photocatalytic properties
Publisher: Inderscience Publishers
Date: 2007
The stabilization and bio-functionalization of iron oxide nanoparticles using heterotelechelic polymers
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B815202K
Prompting electron transport in mesoporous semiconductor electrode by simple film compression
Publisher: Inderscience Publishers
Date: 2014
On techniques for the measurement of the mass fractal dimension of aggregates
Publisher: Elsevier BV
Date: 2002
DOI: 10.1016/S0001-8686(00)00078-6
Abstract: A review is presented of a number of techniques available for the characterisation of the structure of aggregates formed from suspensions of sub-micron particles. Amongst the experimental techniques that have been commonly used are scattering (light, X-ray or neutron), settling and imaging and these are the focus of this work. The theoretical basis for the application of fractal geometry to characterisation of flocs and aggregates is followed by a discussion of the strengths and limitations of the above techniques. Of the scattering techniques available, light scattering provides the greatest potential for use as a tool for structure characterisation even though interpretation of the scattered intensity pattern is complicated by the strong interaction of light and matter. Restructuring further complicates the analysis. Although settling has long been used to characterise particle behaviour, the absence of an accurate permeability model limits the technique as a means of determining the porosity of fractal aggregates. However, it can be argued that the determination of fractal dimension is relatively unaffected. The strength of image analysis lies in its ability to provide a great deal of information about particle morphology and the weaknesses lie in the difficulties with image processing and s le size as this is a particle counting technique. There are very few papers which compare the fractal dimension measured by more than one technique. Light scattering potentially provides a useful tool for checking settling results. However, further work is required to develop proper models for aggregate permeability and flow-through effects.
C-C Cleavage by Au/TiO2 during Ethanol Oxidation: Understanding Bandgap Photoexcitation and Plasmonically Mediated Charge Transfer via Quantitative in Situ DRIFTS
Publisher: American Chemical Society (ACS)
Date: 28-10-2016
Stormwater herbicides removal with a solar-driven advanced oxidation process: A feasibility investigation
Publisher: Elsevier BV
Date: 02-2021
Low energy photosynthesis of gold-titania catalysts
Publisher: Springer Science and Business Media LLC
Date: 08-2007
DOI: 10.1039/B703528D
Abstract: By identifying the Electron Partitioning Effect (EPE) as responsible for the large gold deposits usually formed in the conventional photodeposition method, a low energy UV light-based method for the preparation of comparatively high-activity gold-titania catalysts was developed. These materials were tested in the carbon monoxide (CO) oxidation reaction and returned markedly higher levels of activity at room temperature, when compared to catalysts prepared by the traditional photodeposition method. This is the first instance of using a light-mediated process for preparing catalysts active for the CO oxidation reaction.
Characterisation of short-range structure of silica aggregates—implication to sediment compaction
Publisher: Elsevier BV
Date: 02-2004
Photocatalytic mineralisation of organic compounds: a comparison of flame-made TiO2 catalysts
Publisher: Springer Science and Business Media LLC
Date: 07-2007
Mechanisms of Cr(VI) removal from water by various types of activated carbons
Publisher: Wiley
Date: 02-1999
DOI: 10.1002/(SICI)1097-4660(199902)74:2<111::AID-JCTB990>3.0.CO;2-D
Controllable synthesis of concave cubic gold core–shell nanoparticles for plasmon-enhanced photon harvesting
Publisher: Elsevier BV
Date: 07-2015
DOI: 10.1016/J.JCIS.2014.11.035
Abstract: Well-defined core-shell nanoparticles (NPs) containing concave cubic Au cores and TiO2 shells (CA@T) were synthesized in colloidal suspension. These CA@T NPs exhibit Localized Surface Plasmon Resonance (LSPR) absorption in the NIR region, which provides a unique property for utilizing the low energy range of the solar spectrum. In order to evaluate the plasmonic enhancement effect, a variety of CA@T NPs were incorporated into working electrodes of dye-sensitized solar cells (DSSCs). By adjusting the shell thickness of CA@T NPs, the plasmonic property can be tuned to achieve maximum photovoltaic improvement. Furthermore, the DSSC cells fabricated with the CA@T NPs exhibit a remarkably plasmonic assisted conversion efficiency enhancement (23.3%), compared to that (14.8%) of the reference cells assembled with spherical Au@TiO2 core-shell (SA@T) NPs under similar conditions. Various characterizations reveal that this performance improvement is attributed to the much stronger electromagnetic field generated at the hot spots of CA@T NPs, resulting in significantly higher light harvesting and more efficient charge separation. This study also provides new insights into maximizing the plasmonic enhancement, offering great potential in other applications including light-matter interaction, photocatalytic energy conversion and new-generation solar cells.
An integrated nanocarbon–cellulose membrane for solid-state supercapacitors
Publisher: Elsevier BV
Date: 05-02-2016
A green hydrogen credit framework for international green hydrogen trading towards a carbon neutral future
Publisher: Elsevier BV
Date: 2022
Biocatalytic micromixer coated with enzyme-MOF thin film for CO2 conversion to formic acid
Publisher: Elsevier BV
Date: 12-2021
Combined electrophoretic deposition-anodization method to fabricate reduced graphene oxide-TiO2 nanotube films
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2RA20827J
A Li-ion sulfur full cell with ambient resistant Al-Li alloy anode
Publisher: Elsevier BV
Date: 11-2018
The Dependence of Bi2MoO6 Photocatalytic Water Oxidation Capability on Crystal Facet Engineering
Publisher: Wiley
Date: 28-08-2019
Heteroatom-doped carbon catalysts for zinc–air batteries: progress, mechanism, and opportunities
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0EE02800B
Abstract: This review presents the recent progress in advanced bifunctional heteroatom-doped carbon catalysts for rechargeable aqueous and all-solid-state Zn–air batteries, along with current challenges and future perspectives in the field.
Reconstructing Cu Nanoparticle Supported on Vertical Graphene Surfaces via Electrochemical Treatment to Tune the Selectivity of CO2 Reduction toward Valuable Products
Publisher: American Chemical Society (ACS)
Date: 07-04-2022
Rapid Structure Characterization of Bacterial Aggregates
Publisher: American Chemical Society (ACS)
Date: 07-10-1998
DOI: 10.1021/ES980387U
Semiconductor/reduced graphene oxide nanocomposites derived from photocatalytic reactions
Publisher: Elsevier BV
Date: 04-2011
Evaluating the applicability of a modified toxicity characteristic leaching procedure (TCLP) for the classification of cementitious wastes containing lead and cadmium
Publisher: Elsevier BV
Date: 10-2003
DOI: 10.1016/S0304-3894(03)00245-0
Abstract: Having the toxicity characteristic leaching procedure (TCLP) as a starting point, this study examined the effect of the various leaching parameters on the leaching of Pb and Cd from cementitious wastes. Using modified TCLP procedures, the parameters investigated were the acid concentration, leaching duration, particle size of the crushed waste, liquid to solid ratio, and the acid type. The main finding was that the final leachate pH controls the leachability of metals due to its influence on their solubility. The high alkalinity of cementitious waste buffers the leachate at a pH where most metals become insoluble. The TCLP was found to result in an unrealistic condition for cementitious wastes due to the high resultant leachate pH.
Tuning the Selectivity of LaNiO3 Perovskites for CO2 Hydrogenation through Potassium Substitution
Publisher: MDPI AG
Date: 08-04-2020
Abstract: Herein, we demonstrate a method used to tune the selectivity of LaNiO3 (LNO) perovskite catalysts through the substitution of La with K cations. LNO perovskites were synthesised using a simple sol-gel method, which exhibited 100% selectivity towards the methanation of CO2 at all temperatures investigated. La cations were partially replaced by K cations to varying degrees via control of precursor metal concentration during synthesis. It was demonstrated that the reaction selectivity between CO2 methanation and the reverse water gas shift (rWGS) could be tuned depending on the initial amount of K substituted. Tuning the selectivity (i.e., ratio of CH4 and CO products) between these reactions has been shown to be beneficial for downstream hydrocarbon reforming, while valorizing waste CO2. Spectroscopic and temperature-controlled desorption characterizations show that K incorporation on the catalyst surface decrease the stability of C-based intermediates, promoting the desorption of CO formed via the rWGS prior to methanation.
Understanding, monitoring, and controlling biofilm growth in drinking water distribution systems
Publisher: American Chemical Society (ACS)
Date: 16-08-2016
Abstract: In drinking water distribution systems (DWDS), biofilms are the predominant mode of microbial growth, with the presence of extracellular polymeric substance (EPS) protecting the biomass from environmental and shear stresses. Biofilm formation poses a significant problem to the drinking water industry as a potential source of bacterial contamination, including pathogens, and, in many cases, also affecting the taste and odor of drinking water and promoting the corrosion of pipes. This article critically reviews important research findings on biofilm growth in DWDS, examining the factors affecting their formation and characteristics as well as the various technologies to characterize and monitor and, ultimately, to control their growth. Research indicates that temperature fluctuations potentially affect not only the initial bacteria-to-surface attachment but also the growth rates of biofilms. For the latter, the effect is unique for each type of biofilm-forming bacteria ammonia-oxidizing bacteria, for ex le, grow more-developed biofilms at a typical summer temperature of 22 °C compared to 12 °C in fall, and the opposite occurs for the pathogenic Vibrio cholerae. Recent investigations have found the formation of thinner yet denser biofilms under high and turbulent flow regimes of drinking water, in comparison to the more porous and loosely attached biofilms at low flow rates. Furthermore, in addition to the rather well-known tendency of significant biofilm growth on corrosion-prone metal pipes, research efforts also found leaching of growth-promoting organic compounds from the increasingly popular use of polymer-based pipes. Knowledge of the unique microbial members of drinking water biofilms and, importantly, the influence of water characteristics and operational conditions on their growth can be applied to optimize various operational parameters to minimize biofilm accumulation. More-detailed characterizations of the biofilm population size and structure are now feasible with fluorescence microscopy (epifluorescence and CLSM imaging with DNA, RNA, EPS, and protein and lipid stains) and electron microscopy imaging (ESEM). Importantly, thorough identification of microbial fingerprints in drinking water biofilms is achievable with DNA sequencing techniques (the 16S rRNA gene-based identification), which have revealed a prevalence of previously undetected bacterial members. Technologies are now moving toward in situ monitoring of biomass growth in distribution networks, including the development of optical fibers capable of differentiating biomass from chemical deposits. Taken together, management of biofilm growth in water distribution systems requires an integrated approach, starting from the treatment of water prior to entering the networks to the potential implementation of "biofilm-limiting" operational conditions and, finally, ending with the careful selection of available technologies for biofilm monitoring and control. For the latter, conventional practices, including chlorine-chloramine disinfection, flushing of DWDS, nutrient removal, and emerging technologies are discussed with their associated challenges.
Plasma-Induced Catalyst Support Defects for the Photothermal Methanation of Carbon Dioxide
Publisher: MDPI AG
Date: 28-07-2021
DOI: 10.3390/MA14154195
Abstract: The presence of defects in a catalyst support is known to benefit catalytic activity. In this work, a He-plasma treatment-based strategy for introducing and stabilising defects on a Ni/TiO2 catalyst for photothermal CO2 hydrogenation was established. The impact of pretreatment step sequence—which comprised He-plasma treatment and reduction assivation—on defect generation and stabilisation within the support was evaluated. Characterisation of the Ni/TiO2 catalysts indicated that defects created in the TiO2 support during the initial plasma treatment stage were then stabilised by the reduction assivation process, (P-R)Ni/TiO2. Conversely, performing reduction assivation first, (R-P)Ni/TiO2, invoked a resistance to subsequent defect formation upon plasma treatment and consequently, poorer photothermal catalytic activity. The plasma treatment altered the metal-support interaction and ease of catalyst reduction. Under photothermal conditions, (P-R)Ni/TiO2 reached the highest methane production in 75 min, while (R-P)Ni/TiO2 required 165 min. Decoupling the impacts of light and heat indicated thermal dominance of the reaction with CO2 conversion observed from 200 °C onwards. Methane was the primary product with carbon monoxide detected at 350 °C (~2%) and 400 °C (~5%). Overall, the findings demonstrate the importance of pretreatment step sequence when utilising plasma treatment to generate active defect sites in a catalyst support.
Towards a reliable Li-metal-free LiNO3-free Li-ion polysulphide full cell via parallel interface engineering
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8EE00937F
Abstract: Synchronously engineering the interface compatibility of the anode and the cathode in a Li–polysulfide electrolyte enables a full cell design with improved safety, durability and performance.
A Fully Reversible Water Electrolyzer Cell Made Up from FeCoNi (Oxy)hydroxide Atomic Layers
Publisher: Wiley
Date: 24-06-2019
Ultrasensitive electrochemical detection of prostate-specific antigen (PSA) using gold-coated magnetic nanoparticles as 'dispersible electrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CC30512G
Investigating preparation parameters during titanium oxide nanoribbon synthesis
Publisher: IEEE
Date: 02-2010
Visible light-induced charge storage, on-demand release and self-photorechargeability of WO3 film
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CP20412B
Abstract: Tungsten oxide (WO(3)) electrodes subjected to a positive bias are self-photorecharged with alkali cations in the electrolyte during visible light illumination. Upon photoexcitation, part of the photogenerated charges generated by WO(3) is stabilized by the cations and stored in situ within the WO(3) framework. This light-induced storage of charges is subsequently utilized in dark conditions in an on-demand manner and is able to be recharged in the successive illumination cycles. The amount of charges stored is shown to be dependent on the cation ionic radii and the presence of these intercalated cations is verified by X-ray diffraction (XRD) and inductively coupled plasma mass spectroscopy (ICP-MS). This self-photorecharge and on-demand charge-release phenomena demonstrate the ability of WO(3) to supply photoexcited charges under dark condition in a photoelectrochemical reaction with greater flexibility.
Z-schematic water splitting into H2 and O2 using metal sulfide as a hydrogen-evolving photocatalyst and reduced graphene oxide as a solid-state electron mediator
Publisher: American Chemical Society (ACS)
Date: 08-01-2015
DOI: 10.1021/JA511615S
Abstract: Z-schematic water splitting was successfully demonstrated using metal sulfide photocatalysts that were usually unsuitable for water splitting as single particulate photocatalysts due to photocorrosion. When metal sulfide photocatalysts with a p-type semiconductor character as a H2-evolving photocatalyst were combined with reduced graphene oxide-TiO2 composite as an O2-evolving photocatalyst, water splitting into H2 and O2 in a stoichiometric amount proceeded. In this system, photogenerated electrons in the TiO2 with an n-type semiconductor character transferred to the metal sulfide through a reduced graphene oxide to achieve water splitting. Moreover, this system was active for solar water splitting.
Manipulating ceria-titania binary oxide features and their impact as nickel catalyst supports for low temperature steam reforming of methane
Publisher: Elsevier BV
Date: 2017
Two-birds-one-stone: multifunctional supercapacitors beyond traditional energy storage
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE03167D
Abstract: A comprehensive overview on the recent progress of multifunctional supercapacitors which combine energy storage capability with other functions.
Studies of Nanosized Iron-Doped TiO2 Photocatalysts by Spectroscopic Methods
Publisher: Springer Science and Business Media LLC
Date: 27-03-2017
Single Atom and Nanoclustered Pt Catalysts for Selective CO2 Reduction
Publisher: American Chemical Society (ACS)
Date: 02-11-2018
Engineering the Interfacial Contact between Bi2WO6 and WO3 Heterojunction Photoanode for Improved Charge Transportation
Publisher: American Chemical Society (ACS)
Date: 28-07-2022
Effect of formate and methanol on photoreduction/removal of toxic cadmium ions using TiO2 semiconductor as photocatalyst
Publisher: Elsevier BV
Date: 10-2003
Highly Selective Conversion of CO2 to CO Achieved by a Three-Dimensional Porous Silver Electrocatalyst
Publisher: Wiley
Date: 23-01-2017
Cooperative defect-enriched SiO2 for oxygen activation and organic dehydrogenation
Publisher: Elsevier BV
Date: 08-2019
Liquid Crystal-Mediated 3D Printing Process to Fabricate Nano-Ordered Layered Structures
Publisher: American Chemical Society (ACS)
Date: 10-06-2021
Engineering CuOx Nanoparticles on Cu Foam for Acidic Nitrate Reduction to Ammonium
Publisher: American Chemical Society (ACS)
Date: 06-03-2023
Pt Single Atom Electrocatalysts at Graphene Edges for Efficient Alkaline Hydrogen Evolution
Publisher: Wiley
Date: 10-07-2022
Abstract: Graphene edges exhibit a highly localized density of states that result in increased reactivity compared to its basal plane. However, exploiting this increased reactivity to anchor and tune the electronic states of single atom catalysts (SACs) remains elusive. To investigate this, a method to anchor Pt SACs with ultra‐low mass loadings at the edges of edge‐rich vertically aligned graphene (as low as 0.71 µg Pt cm –2 ) is developed. Angle‐dependent X‐ray absorption spectroscopy and density‐functional theory calculations reveal that edge‐anchored Pt SACs has a robust coupling with the π‐electrons of graphene. This interaction results in a higher occupancy of the Pt 5d orbital, shifting the d ‐band center toward the Fermi level, improving the adsorption of *H for the hydrogen evolution reaction (HER). Pt primarily coordinated to the graphene edge shows improved alkaline HER performance compared to Pt coordinated in mixed environments (turnover frequencies of 22.6 and 10.9 s –1 at an overpotential of 150 mV, respectively). This work demonstrates an effective route to engineering the coordination environment of Pt SACs by using the graphene edge for enhanced energy conversion reactions.
Studies on the Mineralization and Separation Efficiencies of a Magnetic Photocatalyst
Publisher: Wiley
Date: 07-2001
DOI: 10.1002/1521-4125(200107)24:7<745::AID-CEAT745>3.0.CO;2-D
Cellular uptake and reactive oxygen species modulation of cerium oxide nanoparticles in human monocyte cell line U937
Publisher: Elsevier BV
Date: 11-2012
DOI: 10.1016/J.BIOMATERIALS.2012.07.024
Abstract: Cerium oxide nanoparticles (nanoceria) are promising materials for intracellular oxygen free radical scavenging providing a potential therapy for reactive oxygen species (ROS)-mediated inflammatory processes. In this study rhombohedral-shaped nanoceria were synthesized by flame spray pyrolysis with tuneable particle diameters between 3 and 94 nm by changing the liquid precursor flow rate. Monocytes and macrophages are major players in inflammatory processes as their production of ROS species has important downstream effects on cell signalling. Therefore, this study examined the ability of the nanoceria to be internalised by the human monocytic cell line, U937, and scavenge intracellular ROS. U937 cells activated in the presence of phorbol 12-myristate 13-acetate (PMA) were found to be more responsive to the nanoceria than U937 cells, which may not be surprising given the role of monocyte/macrophages in phagocytosing foreign material. The smaller particles were found to contain more crystal lattice defects with which to scavenge ROS, however a greater proportion of both the U937 and activated U937 cell populations responded to the larger particles. Hence all nanoceria particle sizes examined in this study were equally effective in scavenging intracellular ROS.
Opportunities and Challenges for Renewable Power-to-X
Publisher: American Chemical Society (ACS)
Date: 16-11-2020
Core/Shell NiFe Nanoalloy with a Discrete N-doped Graphitic Carbon Cover for Enhanced Water Oxidation
Publisher: Wiley
Date: 25-01-2018
Improving the Photo-Oxidative Performance of Bi2MoO6 by Harnessing the Synergy between Spatial Charge Separation and Rational Co-Catalyst Deposition
Publisher: American Chemical Society (ACS)
Date: 23-02-2018
Abstract: It has been reported that photogenerated electrons and holes can be directed toward specific crystal facets of a semiconductor particle, which is believed to arise from the differences in their surface electronic structures, suggesting that different facets can act as either photoreduction or photo-oxidation sites. This study examines the propensity for this effect to occur in faceted, plate-like bismuth molybdate (Bi
Expanding the applications of the ilmenite mineral to the preparation of nanostructures: TiO2 nanorods and their photocatalytic properties in the degradation of oxalic acid
Publisher: Wiley
Date: 23-11-2013
Abstract: The mineral ilmenite is one of the most abundant ores in the Earth's crust and it is the main source for the industrial production of bulk titanium oxide. At the same time, methods to convert ilmenite into nanostructures of TiO(2) (which are required for new advanced applications, such as solar cells, batteries, and photocatalysts) have not been explored to any significant extent. Herein, we describe a simple and effective method for the preparation of rutile TiO(2) nanorods from ball-milled ilmenite. These nanorods have small dimensions (width: 5-20 nm, length: 50-100 nm, thickness: 2-5 nm) and possess large specific surface areas (up to 97 m(2) g(-1)). Dissolution/hydrolysis recipitation is proposed as a growth mechanism. The nanorods were found to have attractive photocatalytic properties in the degradation of oxalic acid. Their photocatalytic activity is close to that of the benchmark Degussa P25 material and better than that of a commercial high-surface-area rutile powder.
Iron Complex Facilitated Copper Redox Cycling for Nitric Oxide Generation as Nontoxic Nitrifying Biofilm Inhibitor
Publisher: American Chemical Society (ACS)
Date: 28-10-2016
Abstract: In this study, we developed poly(vinyl chloride) (PVC)-solvent casted mixed metal copper and iron complexes capable of catalytic generation of the antibiofilm nitric oxide (NO) from endogenous nitrite. In the absence of additional reducing agent, we demonstrated that the presence of iron complex facilitates a redox cycling, converting the copper(II) complex to active copper(I) species, which catalyzes the generation of NO from nitrite. Assessed by protein assay and surface coverage analyses, the presence of the mixed metal complexes in systems containing water industry-relevant nitrite-producing nitrifying biofilms was shown to result in a "nontoxic mode" of biofilm suppression, while confining the bacterial growth to the free-floating planktonic phase. Addition of an NO scavenger into the mixed metal system eliminated the antibiofilm effects, therefore validating first, the capability of the mixed metal complexes to catalytically generate NO from the endogenously produced nitrite and second, the antibiofilm effects of the generated NO. The work highlights the development of self-sustained antibiofilm materials that features potential for industrial applications. The novel NO-generating antibiofilm technology erts from the unfavorable requirement of adding a reducing agent and importantly, the less tendency for development of bacterial resistance.
Flower-shaped tungsten oxide with inorganic fullerene-like structure: Synthesis and characterization
Publisher: American Chemical Society (ACS)
Date: 06-07-2010
DOI: 10.1021/CG100625M
Flame spray pyrolysis-designed silica/ceria-zirconia supports for the carbon dioxide reforming of methane
Publisher: Elsevier BV
Date: 09-2017
Analysis of the Promoted Activity and Molecular Mechanism of Hydrogen Production over Fine Au-Pt Alloyed TiO2 Photocatalysts
Publisher: American Chemical Society (ACS)
Date: 06-2015
Alternative strategies in improving the photocatalytic and photoelectrochemical activities of visible light-driven BiVO4: a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA04441K
Abstract: This review summarises the recent advances of various strategies in improving the performances of BiVO 4 in photocatalytic and photoelectrochemical systems.
TiO2/porous adsorbents: Recent advances and novel applications
Publisher: Elsevier BV
Date: 2018
DOI: 10.1016/J.JHAZMAT.2017.07.070
Abstract: This article reviews two interrelated areas of research: the first is the use of TiO
Implications of the structure of cementitious wastes containing Pb(II), Cd(II), As(V), and Cr(VI) on the leaching of metals
Publisher: Elsevier BV
Date: 07-2004
Copolymerization Approach to Improving Ru(II)-Complex/C3N4 Hybrid Photocatalysts for Visible-Light CO2 Reduction
Publisher: American Chemical Society (ACS)
Date: 16-10-2018
Temperature-induced evolution of reaction sites and mechanisms during preferential oxidation of CO
Publisher: Elsevier BV
Date: 03-01-2011
A Disquisition on the Active Sites of Heterogeneous Catalysts for Electrochemical Reduction of CO2 to Value‐Added Chemicals and Fuel
Publisher: Wiley
Date: 15-01-2020
Reduced Graphene Oxide: Control of Water Miscibility, Conductivity, and Defects by Photocatalysis
Publisher: Wiley
Date: 10-07-2013
Ni-SiO2 Catalysts for the Carbon Dioxide Reforming of Methane: Varying Support Properties by Flame Spray Pyrolysis
Publisher: MDPI AG
Date: 12-03-2015
Hybrid Graphene and Graphitic Carbon Nitride Nanocomposite: Gap Opening, Electron–Hole Puddle, Interfacial Charge Transfer, and Enhanced Visible Light Response
Publisher: American Chemical Society (ACS)
Date: 27-02-2012
DOI: 10.1021/JA211637P
Abstract: Opening up a band gap and finding a suitable substrate material are two big challenges for building graphene-based nanodevices. Using state-of-the-art hybrid density functional theory incorporating long-range dispersion corrections, we investigate the interface between optically active graphitic carbon nitride (g-C(3)N(4)) and electronically active graphene. We find an inhomogeneous planar substrate (g-C(3)N(4)) promotes electron-rich and hole-rich regions, i.e., forming a well-defined electron-hole puddle, on the supported graphene layer. The composite displays significant charge transfer from graphene to the g-C(3)N(4) substrate, which alters the electronic properties of both components. In particular, the strong electronic coupling at the graphene/g-C(3)N(4) interface opens a 70 meV gap in g-C(3)N(4)-supported graphene, a feature that can potentially allow overcoming the graphene's band gap hurdle in constructing field effect transistors. Additionally, the 2-D planar structure of g-C(3)N(4) is free of dangling bonds, providing an ideal substrate for graphene to sit on. Furthermore, when compared to a pure g-C(3)N(4) monolayer, the hybrid graphene/g-C(3)N(4) complex displays an enhanced optical absorption in the visible region, a promising feature for novel photovoltaic and photocatalytic applications.
Floe strength characterization technique. An insight into silica aggregation
Publisher: American Chemical Society (ACS)
Date: 22-06-2004
DOI: 10.1021/LA049651P
Abstract: This paper tests an approach to the estimation of relative particle bond strength based on the nondimensional floc and aggregation factors. The strength of flocs formed by aggregating nanosized silica particles with the addition of potassium chloride (KCl) or cationic surfactants, alkyltrimethylammonium bromide (mixture of CTAB, DTAB, and MTAB) was analyzed. The bonding force of the flocs formed in surfactant compared to that formed in the KCl system was estimated using the new dimensional analysis approach. This force ratio was then compared to that obtained by atomic force microscopy.
Surface strategies for catalytic CO2 reduction: from two-dimensional materials to nanoclusters to single atoms
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CS00163H
Abstract: This work constructively reviewed and predicted the surface strategies for catalytic CO 2 reduction with 2D material, nanocluster and single-atom catalysts
Renewable energy conversion and storage
Publisher: Wiley
Date: 12-2017
Electrospun Polyacrylonitrile–Ionic Liquid Nanofibers for Superior PM2.5 Capture Capacity
Publisher: American Chemical Society (ACS)
Date: 08-03-2016
Abstract: Ambient fine particulate matter (PM) affects both human health and climate. To reduce the PM2.5 (mass of particles below 2.5 μm in diameter) concentration of an in idual's living environment, ionic liquid-modified polyacrylonitrile (PAN) nanofibers with superior PM2.5 capture capacity were prepared by electrospinning. Ionic liquid diethylammonium dihydrogen phosphate (DEAP) with high viscosity and hydrophilicity was involved during the electrospinning process. Observations by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and water contact angle measurement suggested that the modification of DEAP on PAN effectively altered the morphology (roughness) and surface properties (hydrophilicity) of the PAN nanofibers. The PM2.5 capture measurement was performed in a closed and static system, which mimicked the static hazy weather without wind flow. As a result, DEAP-modified PAN nanofibers exhibited significantly enhanced PM2.5 capture capacity compared to that of the bare PAN nanofibers. This can be attributed to the improved surface roughness (i.e., improved adsorption sites), hydrophilicity, and dipole moment of PAN upon DEAP modification.
Direct (one-step) synthesis of TiO
Publisher:
Elsevier BV
Date:
11-2005
Publisher: Elsevier BV
Date: 11-2005
On Different Approaches to Estimate the Mass Fractal Dimension of Coal Aggregates
Publisher: Wiley
Date: 12-2005
Enhancing bimetallic synergy with light: the effect of UV light pre-treatment on catalytic oxygen activation by bimetallic Au-Pt nanoparticles on a TiO2 support
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CY01326D
Abstract: UV pre-illumination-enhanced bimetallic synergy work-function-driven electron transfer pathway. Au Pt oxygen electron.
A dual-electrolyte system for photoelectrochemical hydrogen generation using CuInS2 -In2 O3 -TiO2 nanotube array thin film
Publisher: Springer Science and Business Media LLC
Date: 04-04-2018
The effect of preparation method on the photoactivity of crystalline titanium dioxide particles
Publisher: Elsevier BV
Date: 09-2003
Gold-coated magnetic nanoparticles as dispersible electrodes - Understanding their electrochemical performance
Publisher: Elsevier BV
Date: 06-2011
Facet-dependent carrier dynamics of cuprous oxide regulating the photocatalytic hydrogen generation
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00934F
Abstract: The photoactivity of rhombic dodecahedral Cu 2 O with dominant {110} facets is superior to that of cubic Cu 2 O with {100} surfaces partly owing to the improved charge separation and carrier mobility.
Alternatives to Water Photooxidation for Photoelectrochemical Solar Energy Conversion and Green H2 Production
Publisher: Wiley
Date: 22-09-2022
Abstract: Photoelectrochemical (PEC) water splitting is considered a promising technology to produce renewable hydrogen, a clean fuel or energy carrier to replace conventional carbon‐based fossil‐fuel sources. Nevertheless, the overall solar‐to‐hydrogen efficiency and the cost‐effectiveness of this technology are still unsatisfactory for practical implementation. This can be primarily attributed to the sluggish kinetics of the anodic oxygen evolution reaction (OER) and the relatively low economic value of cogenerated O 2 production. Over the past decades, there are extensive efforts to explore more kinetically favorable photooxidation reactions, which coupled with hydrogen evolution reaction (HER) can simultaneously improve H 2 production yield and produce higher valuable alternatives to conventional O 2 . This review aims to present recent progress on the alternative anodic choices to OER. Here, the fundamental of PEC water splitting and the critical components required for this system are first shortly summarized. Then the benefits and issues of alternative photooxidation reactions including photooxidation of water to hydrogen peroxide, chlorine, alcohol, 5‐hydroxymethylfurfural, or urea oxidation when combined with the concurrent HER, are reviewed and analyzed. This review is concluded by presenting a critical evaluation of the challenges and opportunities of these alternative HER‐coupled photooxidation reactions for solar energy production and environmental treatment.
Photoelectrocatalytic activity of mesoporous TiO2 thin film electrodes
Publisher: Elsevier BV
Date: 02-2009
Titania nanocomposite polyethersulfone ultrafiltration membranes fabricated using a low temperature hydrothermal coating process
Publisher: Elsevier BV
Date: 09-2011
A comparative study between photocatalytic and photoelectrocatalytic properties of Pt deposited TiO2 thin films for glucose degradation
Publisher: Elsevier BV
Date: 04-2010
Asymmetrical Double Flame Spray Pyrolysis-Designed SiO2/Ce0.7Zr0.3O2 for the Dry Reforming of Methane
Publisher: American Chemical Society (ACS)
Date: 07-2019
Abstract: Silica has the potential to enhance the performance of ceria-zirconia as a support for the dry reforming of methane however, controlling the integration of silica with the ceria-zirconia using flame spray pyrolysis (FSP) is a significant challenge. To address this challenge, an asymmetrically variable double-FSP (DFSP) system was established to control the SiO
Cover Feature: Oxygen Nucleation of MoS2 Nanosheet Thin Film Supercapacitor Electrodes for Enhanced Electrochemical Energy Storage (ChemSusChem 14/2021)
Publisher: Wiley
Date: 02-07-2021
Nanosilver and the microbiological activity of the particulate solids versus the leached soluble silver
Publisher: Informa UK Limited
Date: 15-02-2018
DOI: 10.1080/17435390.2018.1434910
Abstract: Nanosilver (Ag NPs) is currently one of the most commercialized antimicrobial nanoparticles with as yet, still unresolved cytotoxicity origins. To date, research efforts have mostly described the antimicrobial contribution from the leaching of soluble silver, while the undissolved solid Ag particulates are often considered as being microbiologically inert, serving only as source of the cytotoxic Ag ions. Here, we show the rapid stimulation of lethal cellular oxidative stress in bacteria by the presence of the undissolved Ag particulates. The cytotoxicity characteristics are distinct from those arising from the leached soluble Ag, the latter being locked in organic complexes. The work also highlights the unique oxidative stress-independent bacterial toxicity of silver salt. Taken together, the findings advocate that future enquiries on the antimicrobial potency and also importantly, the environmental and clinical impact of Ag NPs use, should pay attention to the potential bacterial toxicological responses to the undissolved Ag particulates, rather than just to the leaching of soluble silver. The findings also put into question the common use of silver salt as model material for evaluating bacterial toxicity of Ag NPs.
Water Splitting and CO2 Reduction under Visible Light Irradiation Using Z-Scheme Systems Consisting of Metal Sulfides, CoOx-Loaded BiVO4 , and a Reduced Graphene Oxide Electron Mediator
Publisher: American Chemical Society (ACS)
Date: 03-08-2016
DOI: 10.1021/JACS.6B05304
Abstract: Metal sulfides are highly active photocatalysts for water reduction to form H2 under visible light irradiation, whereas they are unfavorable for water oxidation to form O2 because of severe self-photooxidation (i.e., photocorrosion). Construction of a Z-scheme system is a useful strategy to split water into H2 and O2 using such photocorrosive metal sulfides because the photogenerated holes in metal sulfides are efficiently transported away. Here, we demonstrate powdered Z-schematic water splitting under visible light and simulated sunlight irradiation by combining metal sulfides as an H2-evolving photocatalyst, reduced graphene oxide (RGO) as an electron mediator, and a visible-light-driven BiVO4 as an O2-evolving photocatalyst. This Z-schematic photocatalyst composite is also active in CO2 reduction using water as the sole electron donor under visible light.
Stabilization of Magnetic Iron Oxide Nanoparticles in Biological Media by Fetal Bovine Serum (FBS)
Publisher: American Chemical Society (ACS)
Date: 20-12-2010
DOI: 10.1021/LA104278M
Abstract: A facile method of stabilizing magnetic iron oxide nanoparticles (MNPs) in biological media (RPMI-1640) via surface modification with fetal bovine serum (FBS) is presented herein. Dynamic light scattering (DLS) shows that the size of the MNP aggregates can be maintained at 190 ± 2 nm for up to 16 h in an RPMI 1640 culture medium containing ≥4 vol % FBS. Under transmission electron microscopy (TEM), a layer of protein coating is observed to cover the MNP surface following treatment with FBS. The adsorption of proteins is further confirmed by X-ray photoelectron spectroscopy (XPS). Gel electrophoresis and LC-MS/MS studies reveal that complement factor H, antithrombin, complement factor I, α-1-antiproteinase, and apolipoprotein E are the proteins most strongly attached to the surface of an MNP. These surface-adsorbed proteins serve as a linker that aids the adsorption of other serum proteins, such as albumin, which otherwise adsorb poorly onto MNPs. The size stability of FBS-treated MNPs in biological media is attributed to the secondary adsorbed proteins, and the size stability in biological media can be maintained only when both the surface-adsorbed proteins and the secondary adsorbed proteins are present on the particle's surface.
Surface engineered tin foil for electrocatalytic reduction of carbon dioxide to formate
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CY00246G
Abstract: Commercially available Sn foil was anodized in organic solvents to fabricate stable and cost-effective electrode that is demonstrated to convert CO 2 to formate with high selectivity.
Selective synthesis of TiO2-based nanoparticles with highly active surface sites for gas-phase photocatalytic oxidation
Publisher: Elsevier BV
Date: 07-2013
Atomically Dispersed Cu Catalysts on Sulfide-Derived Defective Ag Nanowires for Electrochemical CO2 Reduction
Publisher: American Chemical Society (ACS)
Date: 02-02-2023
T4 bacteriophage conjugated magnetic particles for E. coli capturing: Influence of bacteriophage loading, temperature and tryptone
Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.COLSURFB.2016.12.009
Abstract: This work demonstrates the use of bacteriophage conjugated magnetic particles (Fe
Aggregation Mechanisms of Latex of Different Particle Sizes in a Controlled Shear Environment
Publisher: American Chemical Society (ACS)
Date: 21-02-2002
DOI: 10.1021/LA010702H
Light, Catalyst, Activation: Boosting Catalytic Oxygen Activation Using a Light Pretreatment Approach
Publisher: American Chemical Society (ACS)
Date: 24-04-2017
Multipronged Validation of Oxalate C–C Bond Cleavage Driven by Au-TiO2 Interfacial Charge Transfer Using Operando DRIFTS
Publisher: American Chemical Society (ACS)
Date: 19-06-2018
Hydrogen evolution via glycerol photoreforming over Cu-Pt nanoalloys on TiO2
Publisher: Elsevier BV
Date: 05-2016
Selective Solar Absorption of Nanofluids for Photovoltaic/Thermal Collector Enhancement
Publisher: Springer Science and Business Media LLC
Date: 2015
DOI: 10.1557/OPL.2015.724
Abstract: Selectively-absorbing nanofluids were synthesized and evaluated for spectrum splitting PV/T collector applications. Core-shell silver-silica (Ag-SiO 2 ) nanodiscs and multi-walled carbon nanotubes (MWCNTs) were suspended in water at varying dilutions and then tested as an optical filter placed between a light source and silicon solar cell. A concentrated Ag-SiO 2 solution diluted with an aqueous MWCNT solution yielded higher thermal efficiencies than when diluted by the same volume of water. However, AgSiO 2 -MWCNT mixtures yielded a lower electrical output than aqueous AgSiO 2 dilutions due to the non-selective absorption of MWCNTs. The most concentrated Ag-SiO 2 nanofluid (0.026wt%) yielded a peak thermal efficiency of 65%, to deliver the greatest combined efficiency of ∼72%.
Estimating NDMA Formation in a Distribution System Using a Hybrid Genetic Algorithm
Publisher: Wiley
Date: 06-2017
Heritable nanosilver resistance in priority pathogen: a unique genetic adaptation and comparison with ionic silver and antibiotics
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9NR08424J
Abstract: A priority pathogen is capable to evolve stable resistance characteristics that still manifest after discontinuation of the nanosilver exposure.
Fabrication of highly ordered TiO2 nanorod/nanotube adjacent arrays for photoelectrochemical applications
Publisher: American Chemical Society (ACS)
Date: 12-04-2010
DOI: 10.1021/LA1005314
Abstract: This work reports a facile approach to fabricate a perpendicularly aligned and highly ordered TiO(2) nanorod/nanotube (NR/NT) adjacent film by directly anodizing a modified titanium foil. The titanium foil substrate was modified with a layer of crystalline TiO(2) film via a hydrothermal process in 0.05 M (NH(4))(2)S(2)O(8). The resultant NR/NT architecture consists of a highly ordered nanorod top layer that directly adjoins to a highly ordered nanotube array bottom layer. The thickness of the top nanorod layer was approximately 90 nm with average nanorod diameter of 22 nm after 20 min of anodization. The thickness of the bottom nanotube array layer was found to be ca. 250 nm after 20 min of anodization, having an average outer and inner tubular diameters of 120 and 80 nm, respectively. A broad implication of the method is that a simple modification to the substrate surface can lead to new forms of nanostructures. For as-anodized NR/NT s les, XRD analysis reveals that the nanorods are of anatase TiO(2) crystalline form while the nanotubes are amorphous. Anatase TiO(2) crystalline form of NR/NT film with high crystallinity can be obtained by thermally treating the as-anodized s le at 450 degrees C for 2 h in air. The resultant NR/NT film was used as a photoanode for photoactivity evaluation. Comparing with a nanotube array photoanode prepared by direct anodization of unmodified titanium foil, the NR/NT photoanode exhibits a unique feature of selective photocatalytic oxidation toward organics, which makes it very attractive to photocatalytic degradation of organic pollutants, sensing, and other applications.
Advancing MXene Electrocatalysts for Energy Conversion Reactions: Surface, Stoichiometry, and Stability
Publisher: Wiley
Date: 29-11-2022
Abstract: MXenes, due to their tailorable chemistry and favourable physical properties, have great promise in electrocatalytic energy conversion reactions. To exploit fully their enormous potential, further advances specific to electrocatalysis revolving around their performance, stability, compositional discovery and synthesis are required. The most recent advances in these aspects are discussed in detail: surface functional and stoichiometric modifications which can improve performance, Pourbaix stability related to their electrocatalytic operating conditions, density functional theory and advances in machine learning for their discovery, and prospects in large scale synthesis and solution processing techniques to produce membrane electrode assemblies and integrated electrodes. This Review provides a perspective that is complemented by new density functional theory calculations which show how these recent advances in MXene material design are paving the way for effective electrocatalysts required for the transition to integrated renewable energy systems.
An integrated nanocarbon–cellulose membrane for solid-state supercapacitors
Publisher: Elsevier BV
Date: 03-2016
Effects of surface functional groups on the aggregation stability of magnetite nanoparticles in biological media containing serum
Publisher: IEEE
Date: 08-2011
Light-Enhanced CO2 Reduction to CH4 using Nonprecious Transition-Metal Catalysts
Publisher: American Chemical Society (ACS)
Date: 20-02-2020
Fabrication and dispersion of gold-shell-protected magnetite nanoparticles: Systematic control using polyethyleneimine
Publisher: American Chemical Society (ACS)
Date: 22-01-2009
DOI: 10.1021/CM8025329
Sustained solar hydrogen generation using a dye-sensitised NiO photocathode/BiVO 4 tandem photo-electrochemical device
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2EE22866A
Densification of iron(III) sludge in neutralization
Publisher: Elsevier BV
Date: 06-2005
Comparison between Acetic Acid and Landfill Leachates for the Leaching of Pb(II), Cd(II), As(V), and Cr(VI) from Cementitious Wastes
Publisher: American Chemical Society (ACS)
Date: 11-06-2004
DOI: 10.1021/ES0350740
Abstract: The Toxicity Characteristic Leaching Procedure (TCLP) has been widely used to characterize the suitability of solid wastes for disposal in landfills. However, the widespread application of this test for the assessment of wastes disposed in different landfill types is often questionable. This paper investigates the leaching profiles of cement-stabilized heavy metal ions, namely, Pb (II), Cd (II), As(V), and Cr(VI), using acetic acid and leachates from municipal and nonputrescible Australian landfill sites. The leaching profiles of Pb, Cd, As, and Cr using acetic acid were found to be similar to the nonputrescible landfill leachate and differed markedly from the municipal solid waste (MSW) leachate. The additional presence of high amounts of organic and inorganic compounds in the municipal landfill leachate influenced the leaching profiles of these metal ions as compared to the acetic acid and the nonputrescible systems. It is postulated that the organic compounds present in the municipal landfill leachate formed complexes with the Pb and Cd, increasing the mobility of these ions. Moreover, the organic compounds in the municipal landfill leachate induced a reducing environment in the leachate, causing the reduction of Cr(VI) to Cr(III). It was also found that the presence of carbonates in the municipal landfill leachate affected the stability of calcium arsenate, with the carbonate competing with arsenate for calcium at high pH, forcing arsenate into the solution.
Ni/TiO2 for low temperature steam reforming of methane
Publisher: Elsevier BV
Date: 02-2016
Zinc oxide nanoparticles induce cell filamentation in escherichia coli
Publisher: Wiley
Date: 28-02-2013
Artificial photosynthesis as a frontier technology for energy sustainability
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3EE40534F
Understanding the activity and stability of flame-made Co3O4 spinels: A route towards the scalable production of highly performing OER electrocatalysts
Publisher: Elsevier BV
Date: 02-2022
Evolution of morphology and magnetic properties in silica/maghemite nanocomposites
Publisher: American Chemical Society (ACS)
Date: 11-06-2009
DOI: 10.1021/JP902684G
Nanosilver Targets the Bacterial Cell Envelope: The Link with Generation of Reactive Oxygen Radicals
Publisher: American Chemical Society (ACS)
Date: 13-01-2020
Abstract: The work describes the interactions of nanosilver (NAg) with bacterial cell envelope components at a molecular level and how this associates with the reactive oxygen species (ROS)-mediated toxicity of the nanoparticle. Major structural changes were detected in cell envelope biomolecules as a result of damages in functional moieties, such as the saccharides, amides, and phosphodiesters. NAg exposure disintegrates the glycan backbone in the major cell wall component peptidoglycan, causes complete breakdown of lipoteichoic acid, and disrupts the phosphate-amine and fatty acid groups in phosphatidylethanolamine, a membrane phospholipid. Consistent with the oxidative attacks, we propose that the observed cell envelope damages are inflicted, at least in part, by the reactive oxygen radicals being generated by the nanoparticle during its leaching process, abiotically, without cells. The cell envelope targeting, especially those on the inner membrane phospholipid, is likely to then trigger the rapid generation of lethal levels of cellular superoxide (O
From passivation to activation – tunable nickel/nickel oxide for hydrogen evolution electrocatalysis
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9CC07486D
Abstract: A novel, simple and controllable approach to designing NiO/Ni heterostructures supported on carbon for the hydrogen evolution reaction (HER) was utilized.
In Situ Growth of a ZnO Nanowire Network within a TiO2 Nanoparticle Film for Enhanced Dye‐Sensitized Solar Cell Performance
Publisher: Wiley
Date: 29-08-2012
Abstract: ZnO nanowire networks featuring excellent charge transport and light scattering properties are grown in situ within TiO(2) films. The resultant TiO(2) /ZnO composites, used as photoanodes, remarkably enhance the overall conversion efficiency of dye-sensitized solar cells (DSSCs) by 26.9%, compared to that of benchmark TiO(2) films.
ZnIn2S4‐Based Photocatalysts for Energy and Environmental Applications
Publisher: Wiley
Date: 02-09-2021
Abstract: As a fascinating visible‐light‐responsive photocatalyst, zinc indium sulfide (ZnIn 2 S 4 ) has attracted extensive interdisciplinary interest and is expected to become a new research hotspot in the near future, due to its nontoxicity, suitable band gap, high physicochemical stability and durability, ease of synthesis, and appealing catalytic activity. This review provides an overview on the recent advances in ZnIn 2 S 4 ‐based photocatalysts. First, the crystal structures and band structures of ZnIn 2 S 4 are briefly introduced. Then, various modulation strategies of ZnIn 2 S 4 are outlined for better photocatalytic performance, which includes morphology and structure engineering, vacancy engineering, doping engineering, hydrogenation engineering, and the construction of ZnIn 2 S 4 ‐based composites. Thereafter, the potential applications in the energy and environmental area of ZnIn 2 S 4 ‐based photocatalysts are summarized. Finally, some personal perspectives about the promises and prospects of this emerging material are provided.
Efficient Water Splitting Catalyzed by Cobalt Phosphide‐Based Nanoneedle Arrays Supported on Carbon Cloth
Publisher: Wiley
Date: 26-01-2016
Abstract: Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10 mA cm(-2) at an overpotential of 281 mV for OER and 95 mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoOx , which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.
Mobile Polaronic States in α-MoO3 : An ab Initio Investigation of the Role of Oxygen Vacancies and Alkali Ions
Publisher: American Chemical Society (ACS)
Date: 21-04-2016
Abstract: Some oxides have the ability to trap excess electrons in the form of small polarons. Here, using first-principles techniques, we investigate the interaction of excess electrons with α-MoO3. Polarons are found to be about 0.6 eV more stable than delocalized electrons. They can propagate with a high degree of anisotropicity along different crystallographic directions with the lowest barrier found to be about 0.08 eV. In addition to the band gap photoexcited charge carriers that can populate such polaron states, we investigate the role of oxygen vacancies as an intrinsic source of electrons. We also investigate intercalated alkali ions that can form complexes with the created polarons in the lattice. The alkali-polaron complex (AxMoO6, A = alkali ion) binding energies are relatively low, making it easy for the complex to dissociate. This, coupled with the low polaron migration energies, can generate a non-negligible contribution to electronic conductivity even in the absence of illumination, which is experimentally verified. Combined, this light-induced intercalation of alkali ion in MoO3 and its subsequent deintercalation (complex dissociation) processes lead to a novel self-photocharghing phenomenon.
Flame Preparation of Visible-Light-Responsive BiVO4 Oxygen Evolution Photocatalysts with Subsequent Activation via Aqueous Route
Publisher: American Chemical Society (ACS)
Date: 20-05-2011
DOI: 10.1021/AM200247Y
Abstract: Visible-light-active BiVO(4) photocatalyst prepared by a one-step flame spray pyrolysis demonstrates the structural evolution from amorphous to crystalline scheelite-tetragonal and further to scheelite-monoclinic (the photocatalytic active phase). Up to 95% scheelite-monoclinic content, the rest being scheelite-tetragonal, can be achieved in situ by exposing the collection filter to higher flame temperature. Reasonable activity in terms of photocatalytic O(2) evolution was obtained with the increase in crystallinity and scheelite-monoclinic content. Although analogous postcalcination of BiVO(4) improves crystallization and phase transformation, it inevitably induces vacancy defects that are detrimental to the photocatalytic activity. Hence a facile aqueous acid treatment on the flame-made BiVO(4) is introduced, which in the presence of small addition of Bi and V promotes full transformation to scheelite-monoclinic and reduces charge trapping defects. As a result, the photocatalytic O(2) evolution activity was increased by a remarkable 5 folds compared to the best performing untreated flame-made BiVO(4).
The role of adsorbed oxygen in formic acid oxidation by Pt/TiO2 facilitated by light pre-treatment
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CY00939E
Abstract: The formic acid oxidation rate by Pt/TiO 2 under the ambient condition strongly depends on the presence of surface active oxygen species (PtO ads and O−ads).
Synthesis of a novel magnetic photocatalyst by direct deposition of nanosized TiO2 crystals onto a magnetic core
Publisher: Elsevier BV
Date: 05-2002
Refilling Nitrogen to Oxygen Vacancies in Ultrafine Tungsten Oxide Clusters for Superior Lithium Storage
Publisher: Wiley
Date: 16-08-2019
Photoelectrochemical water oxidation using a Bi2 MoO6 /MoO3 heterojunction photoanode synthesised by hydrothermal treatment of an anodised MoO3 thin film
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA00700G
Abstract: A photoactive Bi 2 MoO 6 /MoO 3 heterojunction electrode derived from a direct thin-film-route showed close to 100% faradic photocurrent-to-O 2 conversion efficiency.
Oxygen-Vacancy Engineering of Cerium-Oxide Nanoparticles for Antioxidant Activity
Publisher: American Chemical Society (ACS)
Date: 30-05-2019
Spectrum splitting using gold and silver nanofluids for photovoltaic/thermal collectors
Publisher: IEEE
Date: 06-2016
Relationship between mineralization kinetics and mechanistic pathway during malic acid photodegradation
Publisher: Elsevier BV
Date: 02-2011
Biological impacts of TiO2 on human lung cell lines A549 and H1299: Particle size distribution effects
Publisher: Springer Science and Business Media LLC
Date: 03-2011
Balancing the crystallinity and specific surface area of bismuth tungstate for photocatalytic water oxidation
Publisher: Elsevier BV
Date: 05-2020
Monitoring effects of shearing on floc structure using small-angle light scattering
Publisher: Elsevier BV
Date: 07-1996
The Importance of the Interfacial Contact: Is Reduced Graphene Oxide Always an Enhancer in Photo(Electro)Catalytic Water Oxidation?
Publisher: American Chemical Society (ACS)
Date: 28-05-2019
Abstract: Optimizing interfacial contact between graphene and a semiconductor has often been proposed as essential for improving their charge interactions. Herein, we fabricated bismuth vanadate-reduced graphene oxide (BiVO
Flame sprayed visible light-active Fe-TiO2 for photomineralisation of oxalic acid
Publisher: Elsevier BV
Date: 02-2007
Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells
Publisher: American Chemical Society (ACS)
Date: 11-11-2013
DOI: 10.1021/AM403897F
Abstract: Porous titania nanohybrids (NHs) were successfully prepared by hybridizing the exfoliated titania nanosheets with anatase TiO2 nanoparticles. Various characterizations revealed that the titania NHs as photoanodes play a trifunctional role (light harvesting, dye adsorption, and electron transfer) in improving the efficiency (η) of the dye-sensitized solar cells. The optimized photoanode consisting layered NHs demonstrated a high overall conversion efficiency of 10.1%, remarkably enhanced by 29.5% compared to that (7.8%) obtained from the benchmark P25 nanoparticles under the same testing conditions.
Nitrate reduction to ammonium: from CuO defect engineering to waste NOx-to-NH3 economic feasibility
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE00594D
Abstract: Critical to the feasibility of electrochemical reduction of waste NO x (NO x RR), as a sustainable pathway and to close the NO x cycle for the emerging NH 3 economy, is the requirement of inexpensive, scalable and selective catalysts that can generate NH 4 + with high yield, as indicated by our economic modelling.
Nanostructured β‐Bi2O3 Fractals on Carbon Fibers for Highly Selective CO2 Electroreduction to Formate
Publisher: Wiley
Date: 22-10-2019
Studies on the Preparation of Magnetic Photocatalysts
Publisher: Springer Science and Business Media LLC
Date: 12-2005
Influence of annealing temperature of WO3 in photoelectrochemical conversion and energy storage for water splitting
Publisher: American Chemical Society (ACS)
Date: 03-06-2013
DOI: 10.1021/AM401112Q
Abstract: The current work demonstrates the importance of WO3 crystallinity in governing both photoenergy conversion efficiency and storage capacity of the flower structured WO3 electrode. The degree of crystallinity of the WO3 electrodes was varied by altering the calcination temperature from 200 to 600 °C. For the self-photochargeability phenomenon, the prevailing flexibility of the short-range order structure at low calcination temperature of 200 °C favors the intercalation of the positive cations, enabling more photoexcited electrons to be stored within WO3 framework. This leads to a larger amount of stored charges that can be discharged in an on-demand manner under the absence of irradiation for H2 generation. The stability of the electrodes calcined at 200 °C, however, is compromised because of the structural instability caused by the abundance insertion of cations. On the other hand, films that were calcined at 400 °C displayed the highest stability toward both intercalation of the cations and photoelectrochemical water splitting performance. Although crystallinty of WO3 was furthered improved at 600 °C heat treatment, the worsened contact between the WO3 platelets and the conducting substrate as induced by the significant sintering has been more detrimental toward the charge transport.
A sea-change
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8EE00976G
Abstract: The facile and scalable synthesis of manganese-doped nickel/nickel oxide heterostructures with high activity, outperforming the Pt benchmark, in neutral electrolytes.
Microbial reduction of hexavalent chromium by landfill leachate
Publisher: Elsevier BV
Date: 04-2007
DOI: 10.1016/J.JHAZMAT.2006.07.069
Abstract: The reduction of hexavalent chromium (Cr(VI)) in municipal landfill leachates (MLL) and a non-putrescible landfill leachate (NPLL) was investigated. Complete Cr(VI) reduction was achieved within 17 days in a MLL when spiked with 100 mg l(-1) Cr(VI) or less. In the same period, negligible Cr(VI) reduction was observed in NPLL. In MLL, Cr(VI) reduction was demonstrated to be a function of initial Cr(VI) concentration and bacterial biomass and organic matter concentrations. The bacteria were observed to tolerate 250 mg l(-1) Cr(VI) in MLL and had an optimal growth activity at pH 7.4 in a growth medium. The MLL also possessed an ability to sequentially reduce Cr(VI) over three consecutive spiking cycles.
Assembly of polyethylenimine-based magnetic iron oxide vectors: Insights into gene delivery
Publisher: American Chemical Society (ACS)
Date: 29-01-2010
DOI: 10.1021/LA9041919
Abstract: The use of a nonviral magnetic vector, comprised of magnetic iron oxide nanoparticles (MNP), polyethylenimine (PEI), and plasmid DNA, for transfection of BHK21 cells under a magnetic field is presented. Four different vector configurations were studied by systematically varying the mixing order of MNP, PEI, and DNA. The assembly of the vector has significant effects on its vector size, surface charge, cellular uptake, and level of gene expression. Mixing MNP with PEI first improved MNP stability, giving a narrow aggregate size distribution and positive surface charge at physiological pH, which in turn facilitated DNA binding onto MNP. The presence of serum in culture media improves vector dispersion and alters the surface charge of all vectors to negative charge, indicating serum protein adsorption. Cellular uptake was greater for larger vectors than the smaller vectors due to enhanced gravitational and magnetic aided sedimentation onto the cells. High MNP uptake by the cells, however, does not inevitably lead to increase gene expression efficiency. It can be shown that besides vector uptake, gene expression is affected by extracellular factors such as premature DNA release from MNP and DNA degradation by serum as well as intracellular factors such as vector lysosomal degradation, inability of DNA to detach from MNP, and cytotoxic effects of MNP at high uptake. Some of these extra- and intracellular properties are shown to be mediated by the presence of PEI.
Confined Au‐Pd Ensembles in Mesoporous TiO2 Spheres for the Photocatalytic Oxidation of Acetaldehyde
Publisher: Wiley
Date: 07-10-2013
Integrating Low‐Cost Earth‐Abundant Co‐Catalysts with Encapsulated Perovskite Solar Cells for Efficient and Stable Overall Solar Water Splitting
Publisher: Wiley
Date: 10-11-2021
Liquid Hydrocarbon Production from CO2: Recent Development in Metal-Based Electrocatalysis
Publisher: Wiley
Date: 10-11-2017
Abstract: Rising levels of CO
Bimetallic RuNi-decorated Mg-CUK-1 for oxygen-tolerant carbon dioxide capture and conversion to methane
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2NR03338K
Abstract: A metal–organic framework, known as Mg-CUK-1, is loaded with Ru and Ni nanoparticles and evaluated as a hybrid sorbent/catalyst for the integrated capture and conversion of carbon dioxide to methane under temperature-swing operating conditions.
Meso-Molding Three-Dimensional Macroporous Perovskites: A New Approach to Generate High-Performance Nanohybrid Catalysts
Publisher: American Chemical Society (ACS)
Date: 05-01-2016
Abstract: Newly designed 3D highly ordered macro/mesoporous multifunctional La1-xCexCoO3 nanohybrid frameworks with a 2D hexagonal mesostructure were fabricated via facile meso-molding in a three-dimensionally macroporous perovskite (MTMP) route. The nanohybrid framework exhibited excellent catalytic activity for methane combustion, which derived from the MTMP providing a larger surface area and pore volume, uniform pore sizes, higher accessible surface oxygen concentration, better low-temperature reducibility, and a unique nanovoid 3D structure.
Defect engineering of ZnS thin films for photoelectrochemical water-splitting under visible light
Publisher: Elsevier BV
Date: 08-2016
Modelling the leaching of Pb, Cd, As, and Cr from cementitious waste using PHREEQC
Publisher: Elsevier BV
Date: 10-2005
DOI: 10.1016/J.JHAZMAT.2005.05.046
Abstract: A leaching model was developed using the United States Geological Survey public domain PHREEQC geochemical package to simulate the leaching of Pb, Cd, As, and Cr from cementitious wastes. The model utilises both kinetic terms and equilibrium thermodynamics of key compounds and provides information on leachate and precipitate speciation. The model was able to predict the leaching of Pb, Cd, As, and Cr from cement in the presence of both simple (0.1 and 0.6M acetic acid) and complex municipal landfill leachates. Heavy metal complexation by the municipal landfill leachate was accounted for by the introduction of a monoprotic organic species into the model. The model indicated Pb and As were predominantly incorporated within the calcium silicate hydrate matrix while a greater portion of Cd was seen to exist as discrete particles in the cement pores and Cr (VI) existed mostly as free CrO4(2-) ions. Precipitation was found to be the dominant mechanism controlling heavy metal solubility with carbonate and silicate species governing the solubility of Pb and carbonate, silicate and hydroxide species governing the solubility of Cd. In the presence of acetic acid, at low pH values Pb and Cd acetate complexes were predominant whereas, at high pH values, hydroxide species dominated. At high pH values, the concentration of As in the leachate was governed by the solubility of Ca3(AsO4)2 with the presence of carbonate alkalinity competing with arsenate for Ca ions. In the presence of municipal landfill leachate, Pb and Cd organic complexes dominated the heavy metal species in solution. The reduction of As and Cr in municipal landfill leachate was crucial for determining aqueous speciation, with typical municipal landfill conditions providing the reduced forms of As and Cr.
Hierarchically Porous Network-Like Ni/Co3O4: Noble Metal-Free Catalysts for Carbon Dioxide Methanation
Publisher: Wiley
Date: 23-01-2018
DNA hybridization for nanocube functionalization
Publisher: IEEE
Date: 02-2010
TiO 2 -supported copper nanoparticles prepared via ion exchange for photocatalytic hydrogen production
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA15254E
Abstract: Cu/TiO 2 synthesized through ion exchange provides finer, more highly dispersed metallic copper deposits, displaying a ∼44% greater hydrogen generation capacity than WI Cu/TiO 2 prepared using wet impregnation. The difference in activity was maintained over repeated reaction cycles.
Electronically Modified Atomic Sites Within a Multicomponent Co/Cu Composite for Efficient Oxygen Electroreduction
Publisher: Wiley
Date: 10-03-2021
Reduced graphene oxide is not a universal promoter for photocatalytic activities of TiO 2
Publisher: Elsevier BV
Date: 03-2017
Influence of MoO3 (110) Crystalline Plane on Its Self-Charging Photoelectrochemical Properties
Publisher: Springer Science and Business Media LLC
Date: 11-12-2014
DOI: 10.1038/SREP07428
Abstract: Nanocrystalline molybdenum oxide (α-MoO 3 ) thin films with iso-oriented crystalline layers were synthesised by the anodisation of Mo foils. Upon band-gap excitation using light illumination, α-MoO 3 generates excited electrons for reductive reactions and stores some of the excited electrons in its layered crystalline structure via alkali cation intercalation. These stored electrons can be subsequently discharged from α-MoO 3 to allow reductive reactions to continue to occur under non-illuminated conditions. The modulation of water concentrations in the organic/aqueous anodisation electrolytes readily produces α-MoO 3 crystals with high degree of (kk0) crystallographic orientation. Moreover, these (kk0)-oriented MoO 3 crystals exhibit well-developed {hk0} and {0k0} crystal facets. In this paper, we show the benefits of producing α-MoO 3 thin films with defined crystal facets and an iso-oriented layered structure for in situ storing of excited charges. α-MoO 3 crystals with dominant (kk0) planes can achieve fast charging and a strong balance between charge release for immediate exploitation under illuminated conditions and charge storage for subsequent utilisation in dark. In comparison, α-MoO 3 crystals with dominant (0k0) planes show a preference for excited charge storage.
Modulating Activity through Defect Engineering of Tin Oxides for Electrochemical CO2 Reduction
Publisher: Wiley
Date: 04-07-2019
TiO2 Photocatalysis of Natural Organic Matter in Surface Water: Impact on Trihalomethane and Haloacetic Acid Formation Potential
Publisher: American Chemical Society (ACS)
Date: 11-07-2008
DOI: 10.1021/ES800887S
Abstract: In this study, changes in the physical and structural properties of natural organic matter (NOM) during titanium dioxide photocatalytic oxidation process were investigated using several complementary analytical techniques. Potential of the treated water to form trihalomethanes (THMs) and haloacetic acids (HAAs) was also studied. High-performance size exclusion chromatography analysis showed that NOM with apparent molecular weights of 1-4 kDa were preferentially degraded, leading to the formation of lower molecular weight organic compounds. Resin fractionation of the treated water demonstrated that the photocatalytic oxidation changed the affinity of the bulk organic character from predominantly hydrophobic to more hydrophilic. Short chain aldehydes and ketones were identified by mass spectroscopy as one of the key degradation products. The addition of hydrogen peroxide to photocatalysis was found to increase the degradation kinetics but did not affect the reaction pathway, thus producing similar degradation end products. The amount of THMs normalized per dissolved organic carbon (specific THM) formed upon chlorination of NOM treated with photocatalytic oxidation was reduced from 56 to 10 microg/mg. In contrast, the specific HAAs formation potential of the treated water remained relatively unchanged from the initial value of 38 microg/mg, which could be due to the presence of hydrophilic precursor compounds that were formed as a result of the photocatalytic oxidation process.
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Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE170100137
Start Date: 2017
End Date: 04-2019
Amount: $358,275.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE100100128
Start Date: 2010
End Date: 12-2011
Amount: $300,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0990840
Start Date: 07-2010
End Date: 03-2012
Amount: $165,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP210102694
Start Date: 02-2021
End Date: 01-2025
Amount: $521,318.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP140102432
Start Date: 03-2014
End Date: 06-2018
Amount: $395,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0882787
Start Date: 2008
End Date: 02-2009
Amount: $390,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0455067
Start Date: 10-2004
End Date: 04-2008
Amount: $131,644.00
Funder: Australian Research Council
View Funded ActivityAustralian Laureate Fellowships - Grant ID: FL140100081
Start Date: 2015
End Date: 12-2019
Amount: $2,380,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP110100459
Start Date: 10-2011
End Date: 12-2015
Amount: $660,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP150100602
Start Date: 06-2016
End Date: 06-2019
Amount: $231,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0346315
Start Date: 10-2003
End Date: 12-2003
Amount: $234,000.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0561913
Start Date: 01-2005
End Date: 12-2006
Amount: $15,000.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354588
Start Date: 01-2004
End Date: 12-2003
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE210100153
Start Date: 2021
End Date: 12-2021
Amount: $497,264.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE110100164
Start Date: 2011
End Date: 06-2012
Amount: $680,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE200100033
Start Date: 2020
End Date: 03-2022
Amount: $1,200,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE120100098
Start Date: 01-2012
End Date: 06-2014
Amount: $230,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0989567
Start Date: 03-2009
End Date: 09-2010
Amount: $500,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC130100021
Start Date: 05-2013
End Date: 06-2019
Amount: $2,100,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE100100098
Start Date: 06-2010
End Date: 03-2012
Amount: $600,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC200100023
Start Date: 06-2021
End Date: 06-2026
Amount: $4,920,490.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE190100014
Start Date: 06-2019
End Date: 06-2020
Amount: $376,358.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0668100
Start Date: 01-2006
End Date: 10-2007
Amount: $200,000.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE0348243
Start Date: 2003
End Date: 02-2015
Amount: $12,463,180.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0882720
Start Date: 03-2009
End Date: 12-2011
Amount: $371,320.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354656
Start Date: 01-2004
End Date: 03-2005
Amount: $20,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Research Hubs - Grant ID: IH180100020
Start Date: 07-2019
End Date: 07-2025
Amount: $3,058,152.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP100100481
Start Date: 02-2011
End Date: 12-2015
Amount: $557,000.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0882654
Start Date: 2008
End Date: 12-2009
Amount: $18,000.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE230100032
Start Date: 03-2024
End Date: 02-2031
Amount: $35,000,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE200100136
Start Date: 09-2020
End Date: 04-2024
Amount: $1,100,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0882855
Start Date: 2008
End Date: 12-2009
Amount: $900,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP230101861
Start Date: 10-2023
End Date: 09-2026
Amount: $558,325.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE120100197
Start Date: 01-2012
End Date: 12-2013
Amount: $375,000.00
Funder: Australian Research Council
View Funded Activity