ORCID Profile
0000-0003-0907-5626
Current Organisation
University of Western Australia
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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 | Environmental Nanotechnology | Catalytic Process Engineering | Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels) | Nanomaterials | Wastewater Treatment Processes | Nanotechnology | Chemical Engineering not elsewhere classified | Water Treatment Processes
ANZSRC Socio-Economic Objective (SEO)
Environmentally Sustainable Energy Activities not elsewhere classified | Energy Transformation not elsewhere classified | Renewable Energy not elsewhere classified | Physical and Chemical Conditions of Water for Urban and Industrial Use | Expanding Knowledge in Engineering | Industrial Gases |
Related Links
Publications
Solar-to-Chemical Conversion
Publisher: Wiley
Date: 29-03-2021
Electrochemical synthesis of graphene/MnO 2 in an architecture of bilayer microtubes as micromotors
Publisher: Elsevier BV
Date: 09-2017
Superstructures with Atomic-Level Arranged Perovskite and Oxide Layers for Advanced Oxidation with an Enhanced Non-Free Radical Pathway
Publisher: American Chemical Society (ACS)
Date: 21-01-2022
Heterogeneous catalytic oxidation of aqueous phenol on red mud-supported cobalt catalysts
Publisher: American Chemical Society (ACS)
Date: 15-11-2012
DOI: 10.1021/IE301639T
Improved trade-off between strength and plasticity in titanium based metastable beta type Ti-Zr-Fe-Sn alloys
Publisher: Elsevier BV
Date: 10-2019
Oxygen functional groups in graphitic carbon nitride for enhanced photocatalysis
Publisher: Elsevier BV
Date: 04-2016
DOI: 10.1016/J.JCIS.2016.01.051
Abstract: Metal-free semiconductors offer a new opportunity for environmental photocatalysis toward a potential breakthrough in high photo efficiency with complete prevention of metal leaching. In this study, graphitic carbon nitride (GCN) modified by oxygen functional groups was synthesized by a hydrothermal treatment of pristine GCN at different temperatures with H2O2. Insights into the emerging characteristics of the modified GCN in photocatalysis were obtained by determining the optical properties, band structure, electrochemical activity and pollutant degradation efficiency. It was found that the introduction of GCN with oxygen functional groups can enhance light absorption and accelerate electron transfer so as to improve the photocatalytic reaction efficiency. The photoinduced reactive radicals and the associated photodegradation were investigated by in situ electron paramagnetic resonance (EPR). The reactive radicals, O2(-) and OH, were responsible for organic degradation.
Binder free 3D core–shell NiFe layered double hydroxide (LDH) nanosheets (NSs) supported on Cu foam as a highly efficient non-enzymatic glucose sensor
Publisher: Elsevier BV
Date: 06-2022
DOI: 10.1016/J.JCIS.2022.02.037
Abstract: Rational design with fine-tuning of the electrocatalyst material is vital for achieving the desired sensitivity, selectivity, and stability for an electrochemical sensor. In this study, a three-dimensional (3D) hierarchical core-shell catalyst was employed as a self-standing, binder-free electrode for non-enzymatic glucose sensing. The catalyst was prepared by decorating the shell of NiFe layered double hydroxide (LDH) nanosheets (NSs) on the core of Cu nanowires (NWs) grown on a Cu foam support. The optimized 3D core-shell Cu@NiFe LDH sensor demonstrated higher sensitivity (7.88 mA mM
Graphitic carbon nitride engineered α-Fe2O3/rGO heterostructure for visible-light-driven photochemical oxidation of sulfamethoxazole
Publisher: Elsevier BV
Date: 2023
Macroporous Carbon-Nitride-Supported Transition-Metal Single-Atom Catalysts for Photocatalytic Hydrogen Production from Ammonia Splitting
Publisher: American Chemical Society (ACS)
Date: 21-08-2023
Crystallinity and valence states of manganese oxides in Fenton-like polymerization of phenolic pollutants for carbon recycling against degradation
Publisher: Elsevier BV
Date: 10-2022
Facile assembly of Bi2 O3 /Bi2 S3 /MoS2 n-p heterojunction with layered n-Bi2 O3 and p-MoS2 for enhanced photocatalytic water oxidation and pollutant degradation
Publisher: Elsevier BV
Date: 2017
Manganese‐Based Micro/Nanomotors: Synthesis, Motion, and Applications
Publisher: Wiley
Date: 28-07-2021
Abstract: As emerging micro/nano‐scale devices, micro/nanomotors have been innovatively applied in the environmental and biomedical applications. In this paper, the recent advances of Mn‐based micro/nanomotors (Mn‐micro/nanomotors) in catalytic oxidation of organic contaminants and the mechanisms in decomposition of H 2 O 2 (e.g., the generation of O 2 bubbles and reactive oxygen species) are reviewed. The intrinsic characteristics and synthetic strategies of Mn‐based materials are discussed, aiming to gain comprehensive understandings on the asymmetric design of micro/nanomotors. Mn‐micro/nanomotors have many advantages such as flexible structures, biocompatibility, powerful motion, long lifetime, and low‐cost as compared to noble‐metal micro/nanomotors. These merits fulfil Mn‐micro/nanomotors great promises from proof‐of‐concept studies to realistic applications, including pollutant decomposition, trace detection of heavy metal ions, oil removal, drug delivery, isolation of biological targets, and killing bacteria and cancer cells. The great flexibility in fabrication enables erse and innovative strategies to address challenges for Mn‐micro/nanomotors, including high consumption of H 2 O 2 and non‐directional motion. Meanwhile, a perspective of Mn‐micro/nanomotors in water remediation by coupling the motors with other Fenton/Fenton‐like systems to enhance the catalytic activity and to yield more reactive oxygen species is presented. Directions to the design of on‐demand H 2 O 2 ‐fueled Mn‐micro/nanomotors for advanced purification of organic contaminants in aquatic systems are also proposed.
Metal-free graphene-carbon nitride hybrids for photodegradation of organic pollutants in water
Publisher: Elsevier BV
Date: 12-2015
A Hydrogen-Initiated Chemical Epitaxial Growth Strategy for In-Plane Heterostructured Photocatalyst
Publisher: American Chemical Society (ACS)
Date: 25-11-2020
Abstract: Integrating carbon nitride with graphene into a lateral heterojunction would avoid energy loss within the interlaminar space region on conventional composites. To date, its synthesis process is limited to the bottom-up method which lacks the targeting and homogeneity. Herein, we proposed a hydrogen-initiated chemical epitaxial growth strategy at a relatively low temperature for the fabrication of graphene/carbon nitride in-plane heterostructure. Theoretical and experimental analysis proved that methane via
N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard
Publisher: MDPI AG
Date: 10-2020
DOI: 10.3390/EN13195105
Abstract: The simple incineration of wood-based panels (WBPs) waste generates a significant amount of NOx, which has led to urgency in developing a new method for treating the N-containing biomass residues. This work aims to examine the N evolution and physiochemical structural changes during the co-pyrolysis of fiberboard and glucose, where the percentage of glucose in the feedstock was varied from 0% to 70%. It was found that N retention in chars was monotonically increased with increasing use of glucose, achieving ~60% N fixation when the glucose accounted for 70% in the mixture. Pyrrole-N (N-5) and Pyridine-N (N-6) were preferentially formed at high ratios of glucose to fiberboard. While the relevant importance of volatile–char interactions to N retention and transformation could be observed, the volatile–volatile reactions from the two feedstocks played a vital role in the increase in abundance of glucose. With the introduction of glucose, the porous structure and porosity in chars from the co-pyrolysis were dramatically altered, whereas the devolatilization of glucose tended to generate larger pores than the fiberboard. The insignificant changes in carbon structure of all chars revealed by Raman spectroscopy would practically allow us to apply the monosaccharides to the WBPs for regulating N evolution without concerns about its side effects for char carbon structures.
Solution combustion synthesis of Co oxide-based catalysts for phenol degradation in aqueous solution
Publisher: Elsevier BV
Date: 04-2012
DOI: 10.1016/J.JCIS.2012.01.043
Abstract: Solution combustion using urea as a fuel was employed to synthesise Co oxide and Al(2)O(3)-, SiO(2)- and TiO(2)-supported Co oxide catalysts. The catalysts were characterised using several techniques such as N(2) adsorption/desorption, XRD, FTIR, UV-vis diffuse reflectance and SEM-EDX, and their catalytic activity was evaluated in phenol degradation in aqueous solution with sulphate radicals. Solution combustion is a simple and effective method in preparation of supported Co catalysts. Co(3)O(4) was the major Co crystal phase in the s les prepared via the combustion synthesis. Bulk Co(3)O(4) particles were not effective in reaction, but supported Co oxides showed higher activity than unsupported Co oxide. The supports influenced Co dispersion and catalytic activity. Co/TiO(2) exhibited the highest activity, but it deactivated much faster than other two supported catalysts. Co/SiO(2) showed a comparable activity to Co/Al(2)O(3) and the best stability among the three Al(2)O(3)-, SiO(2)- and TiO(2)-supported Co catalysts.
Boosting Fenton-Like Reactions via Single Atom Fe Catalysis
Publisher: American Chemical Society (ACS)
Date: 22-08-2019
Abstract: The maximization of the numbers of exposed active sites in supported metal catalysts is important to achieve high reaction activity. In this work, a simple strategy for anchoring single atom Fe on SBA-15 to expose utmost Fe active sites was proposed. Iron salts were introduced into the as-made SBA-15 containing the template and calcined for simultaneous decomposition of the iron precursor and the template, resulting in single atom Fe sites in the nanopores of SBA-15 catalysts (SAFe-SBA). X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and extended X-ray absorption fine structure (EXAFS) imply the presence of single atom Fe sites. Furthermore, EXAFS analysis suggests the structure of one Fe center with four O atoms, and density functional theory calculations (DFT) simulate this structure. The catalytic performances of SAFe-SBA were evaluated in Fenton-like catalytic oxidation of
Two−dimensional nanomaterials confined single atoms: New opportunities for environmental remediation
Publisher: Elsevier BV
Date: 03-2023
Application of Biochar Derived From Pyrolysis of Waste Fiberboard on Tetracycline Adsorption in Aqueous Solution
Publisher: Frontiers Media SA
Date: 13-02-2020
Porous Nitrogen-Defected Carbon Nitride Derived from A Precursor Pretreatment Strategy for Efficient Photocatalytic Degradation and Hydrogen Evolution
Publisher: American Chemical Society (ACS)
Date: 05-01-2022
DOI: 10.1021/ACS.LANGMUIR.1C02884
Abstract: Graphitic carbon nitride (g-C
Natural manganese ores for efficient removal of organic pollutants via catalytic peroxymonosulfate‐based advanced oxidation processes
Publisher: Wiley
Date: 31-03-2023
DOI: 10.1002/APJ.2907
Abstract: Peroxymonosulfate‐based advanced oxidation processes (PMS‐AOPs) for in situ persistent organic pollutant (POP) remediation in aqueous solutions can be a promising technology. However, this technology is constrained by its high toxicity and cost of metal oxide and non‐metal catalysts for PMS activation. Here, we investigated the catalytic performance of a widely available natural mineral, manganese ore (MO), for PMS activation. A series of natural MO s les in an aqueous solution were prepared via the Fenton‐like reaction. The s les' crystalline structure, surface morphology, textural properties, and other surface characteristics of the selected MO were systematically characterized. The effects of PMS concentration and process parameters on the degradation performance of four chosen model pollutants, that is, phenol, tetrabromobisphenol A (TBBPA), rhodamine B (RhB), and methylene blue (MB), were evaluated. The experimental results showed that natural MO increased catalytic activity and enhanced the PMS oxidation processes, with 98%, 90%, and 75% removal efficiencies on phenol, TBBPA, and RhB, respectively, within 1.5 h. The reduction in the initial pH solution from 10 to 7 and the increase in temperature from 15 to 45°C enhanced the MB degradation rate (decolorization) by 55 and 46%, respectively, within 2 h. During the PMS activation process, SO 4 •− , • OH, and 1 O 2 species were generated, but only SO 4 •− and • OH radicals with strong oxidative potentials contributed to the catalytic degradation. The dissolved metals from the experiments were found well within the limit of drinking water standards, verifying that the MO + PMS catalytic system is suitable for commercial applications. This work provides insights into the development potential and prospects of using natural minerals for PMS activation and POP degradation, which can accelerate their industrial applications.
Catalytic Pollutant Upgrading to Dual-Asymmetric MnO2@polymer Nanotubes as Self-Propelled and Controlled Micromotors for H2O2 Decomposition
Publisher: Wiley
Date: 06-07-2023
Abstract: Industrial and disinfection wastewater typically contains high levels of organic pollutants and residue hydrogen peroxide, which have caused environmental concerns. In this work, dual‐asymmetric MnO 2 @polymer microreactors are synthesized via pollutant polymerization for self‐driven and controlled H 2 O 2 decomposition. A hollow and asymmetric MnO 2 nanotube is derived from MnO 2 nanorods by selective acid etching and then coated by a polymeric layer from an aqueous phenolic pollutant via catalytic peroxymonosulfate (PMS)‐induced polymerization. The evolution of particle‐like polymers is controlled by solution pH, molar ratios of PMS henol, and reaction duration. The polymer‐covered MnO 2 tubing‐structured micromotors presented a controlled motion velocity, due to the reverse torque driven by the O 2 bubbles from H 2 O 2 decomposition in the inner tunnels. In addition, the partially coated polymeric layer can regulate the exposure and population of Mn active sites to control the H 2 O 2 decomposition rate, thus avoiding violent motions and massive heat caused by vigorous H 2 O 2 decomposition. The microreactors can maintain the function of mobility in an ultra‐low H 2 O 2 environment ( .31 wt.%). This work provides a new strategy for the transformation of micropollutants to functional polymer‐based microreactors for safe and controlled hydrogen peroxide decomposition for environmental remediation.
New insights into heterogeneous generation and evolution processes of sulfate radicals for phenol degradation over one-dimensional α-MnO2 nanostructures
Publisher: Elsevier BV
Date: 04-2015
The double-edged effect of single atom metals on photocatalysis
Publisher: Elsevier BV
Date: 02-2023
Photocatalytic activation of peroxymonosulfate by carbon quantum dots: rational regulation of surface functionality and computational insights
Publisher: Elsevier BV
Date: 06-2023
A comparative study of reduced graphene oxide modified TiO2 , ZnO and Ta2 O5 in visible light photocatalytic/photochemical oxidation of methylene blue
Publisher: Elsevier BV
Date: 03-2014
Topotactic Transformation of Metal–Organic Frameworks to Graphene-Encapsulated Transition-Metal Nitrides as Efficient Fenton-like Catalysts
Publisher: American Chemical Society (ACS)
Date: 13-12-2016
Abstract: Innovation in transition-metal nitride (TMN) preparation is highly desired for realization of various functionalities. Herein, series of graphene-encapsulated TMNs (Fe
Deformation and toughness behavior of β -type titanium alloys comprising C15-type Laves phase
Publisher: Elsevier BV
Date: 09-2020
Photoinducing Different Mechanisms on a Co-Ni Bimetallic Alloy in Catalytic Dry Reforming of Methane
Publisher: American Chemical Society (ACS)
Date: 02-08-2023
The Nature of Active Sites for Plasmon‐Mediated Photothermal Catalysis and Heat‐Coupled Photocatalysis in Dry Reforming of Methane
Publisher: Wiley
Date: 30-01-2023
DOI: 10.1002/EEM2.12416
Abstract: Solar energy‐induced catalysis has been attracting intensive interests and its quantum efficiencies in plasmon‐mediated photothermal catalysis (P‐photothermal catalysis) and external heat‐coupled photocatalysis (E‐photothermal catalysis) are ultimately determined by the catalyst structure for photo‐induced energetic hot carriers. Herein, different catalysts of supported (TiO 2 ‐P25 and Al 2 O 3 ) platinum quantum dots are employed in photo, thermal, and photothermal catalytic dry reforming of methane. Integrated experimental and computational results unveil different active sites (hot zones) on the two catalysts for photo, thermal, and photothermal catalysis. The hot zones of P‐photothermal catalysis are identified to be the metal–support interface on Pt/P25 and the Pt surface on Pt/Al 2 O 3 , respectively. However, a change of the active site to the Pt surface on Pt/P25 is for the first time observed in E‐photothermal catalysis (external heating temperature of 700 °C). The hot zones contribute to the significant enhancements in photothermal catalytic reactivity against thermocatalysis. This study helps to understand the reaction mechanism of photothermal catalysis to exploit efficient catalysts for solar energy utilization and fossil fuels upgrading.
Nitrogen-doped Carbon Nanospheres-Modified Graphitic Carbon Nitride with Outstanding Photocatalytic Activity
Publisher: Springer Science and Business Media LLC
Date: 17-01-2020
DOI: 10.1007/S40820-019-0358-X
Abstract: Metals and metal oxides are widely used as photo/electro-catalysts for environmental remediation. However, there are many issues related to these metal-based catalysts for practical applications, such as high cost and detrimental environmental impact due to metal leaching. Carbon-based catalysts have the potential to overcome these limitations. In this study, monodisperse nitrogen-doped carbon nanospheres (NCs) were synthesized and loaded onto graphitic carbon nitride (g-C 3 N 4 , GCN) via a facile hydrothermal method for photocatalytic removal of sulfachloropyridazine (SCP). The prepared metal-free GCN-NC exhibited remarkably enhanced efficiency in SCP degradation. The nitrogen content in NC critically influences the physicochemical properties and performances of the resultant hybrids. The optimum nitrogen doping concentration was identified at 6.0 wt%. The SCP removal rates can be improved by a factor of 4.7 and 3.2, under UV and visible lights, by the GCN-NC composite due to the enhanced charge mobility and visible light harvesting. The mechanism of the improved photocatalytic performance and band structure alternation were further investigated by density functional theory (DFT) calculations. The DFT results confirm the high capability of the GCN-NC hybrids to activate the electron–hole pairs by reducing the band gap energy and efficiently separating electron/hole pairs. Superoxide and hydroxyl radicals are subsequently produced, leading to the efficient SCP removal.
Cobalt Single Atoms Embedded in Nitrogen‐Doped Graphene for Selective Oxidation of Benzyl Alcohol by Activated Peroxymonosulfate
Publisher: Wiley
Date: 19-01-2021
Efficient removal of organic pollutants by ceramic hollow fibre supported composite catalyst
Publisher: Elsevier BV
Date: 07-2019
Mini-Review on Char Catalysts for Tar Reforming during Biomass Gasification: The Importance of Char Structure
Publisher: American Chemical Society (ACS)
Date: 27-12-2019
van der Waals type II carbon nitride homojunctions for visible light photocatalytic hydrogen evolution
Publisher: Springer Science and Business Media LLC
Date: 05-08-2021
Atomic H* mediated fast decontamination of antibiotics by bubble-propelled magnetic iron-manganese oxides core-shell micromotors
Publisher: Elsevier BV
Date: 10-2022
Monodisperse Co3 O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation
Publisher: Elsevier BV
Date: 04-2018
Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA05940A
Abstract: A mild synthesis method was developed to improve metal-free catalysis of graphene in catalytic oxidation by nitrogen modification, which can be easily tailored by varying calcination temperature.
Graphitic Carbon Nitride-Based Z-Scheme Structure for Photocatalytic CO2 Reduction
Publisher: American Chemical Society (ACS)
Date: 03-11-2020
α-MnO 2 activation of peroxymonosulfate for catalytic phenol degradation in aqueous solutions
Publisher: Elsevier BV
Date: 09-2012
Insights into perovskite-catalyzed peroxymonosulfate activation: Maneuverable cobalt sites for promoted evolution of sulfate radicals
Publisher: Elsevier BV
Date: 10-2011
Confinement of Ag(I) Sites within MIL-101 for Robust Ethylene/Ethane Separation
Publisher: American Chemical Society (ACS)
Date: 15-11-2019
Improved Corrosion Resistance on Selective Laser Melting Produced Ti-5Cu Alloy after Heat Treatment
Publisher: American Chemical Society (ACS)
Date: 11-05-2018
Photocatalytic reforming of biomass for hydrogen production over ZnS nanoparticles modified carbon nitride nanosheets
Publisher: Elsevier BV
Date: 11-2019
DOI: 10.1016/J.JCIS.2019.07.066
Abstract: Hydrogen generation from biomass reforming via solar energy utilisation has become a fascinating strategy toward future energy sustainability. In this study, ZnS nanoparticles with an average size around 10-15 nm were synthesised by a facile hydrothermal method, and then hybridised with g-C
One-pot hydrothermal synthesis of ZnO-reduced graphene oxide composites using Zn powders for enhanced photocatalysis
Publisher: Elsevier BV
Date: 08-2013
Understanding of Oxidation Behaviour of Benzyl Alcohol by Peroxymonosulfate via Carbon Nanotubes Activation
Publisher: American Chemical Society (ACS)
Date: 11-02-2020
Temperature-dependent evolution of hydroxyl radicals from peroxymonosulfate activation over nitrogen-modified carbon nanotubes
Publisher: Elsevier BV
Date: 12-2018
2D/2D nano-hybrids of γ-MnO 2 on reduced graphene oxide for catalytic ozonation and coupling peroxymonosulfate activation
Publisher: Elsevier BV
Date: 2016
DOI: 10.1016/J.JHAZMAT.2015.08.031
Abstract: Two-dimensional reduced graphene oxide (2D rGO) was employed as both a shape-directing medium and support to fabricate 2D γ-MnO2/2D rGO nano-hybrids (MnO2/rGO) via a facile hydrothermal route. For the first time, the 2D/2D hybrid materials were used for catalytic ozonation of 4-nitrophenol. The catalytic efficiency of MnO2/rGO was much higher than either MnO2 or rGO only, and rGO was suggested to play the role for promoting electron transfers. Quenching tests using tert-butanol, p-benzoquinone, and sodium azide suggested that the major radicals responsible for 4-nitrophenol degradation and mineralization are O2(-) and (1)O2, but not ·OH. Reusability tests demonstrated a high stability of the materials in catalytic ozonation with minor Mn leaching below 0.5 ppm. Degradation mechanism, reaction kinetics, reusability and a synergistic effect between catalytic ozonation and coupling peroxymonosulfate (PMS) activation were also discussed.
Adsorption and heterogeneous advanced oxidation of phenolic contaminants using Fe loaded mesoporous SBA-15 and H2 O2
Publisher: Elsevier BV
Date: 15-10-2010
Preparation and characterization of visible-light-driven carbon-sulfur-codoped TiO2 photocatalysts
Publisher: American Chemical Society (ACS)
Date: 15-06-2006
DOI: 10.1021/IE060350F
Controlled synthesis of innovative carbon-based CaO2 materials with boosted oxygen release performance in the aqueous environment
Publisher: Elsevier BV
Date: 06-2023
Surface-tailored nanodiamonds as excellent metal-free catalysts for organic oxidation
Publisher: Elsevier BV
Date: 07-2016
UV-assisted construction of 3D hierarchical rGO/Bi2 MoO6 composites for enhanced photocatalytic water oxidation
Publisher: Elsevier BV
Date: 04-2017
Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation
Publisher: Wiley
Date: 12-05-2022
Abstract: Among various advanced oxidation processes, coupled photocatalysis and heterogeneous Fenton‐like catalysis (known as photo‐Fenton‐like catalysis) to generate highly reactive species for environmental remediation has attracted wide interests. As an emerging metal‐free photocatalyst, graphitic carbon nitride (g‐C 3 N 4 , CN) has been recently recognized as a promising candidate to catalyze robustly heterogeneous photo‐Fenton‐like reactions for wastewater remediation. This review summarizes recent progress in fabricating various types of CN‐based catalysts for the photo‐Fenton‐like reaction process. Innovative engineering strategies on the CN matrix are outlined, ranging from morphology control, defect engineering, nonmetal atom doping, organic molecule doping to modification by metal‐containing species. The photo‐Fenton‐like catalytic activities of CN loaded with auxiliary sub‐nanoscale (e.g., quantum dots, organometallic molecules, metal cations, and single atom metals) and nanoscale metal‐based materials are critically evaluated. Hybridization of CN with bandgap‐matching semiconductors for the construction of type‐II and Z‐scheme heterojunctions are also examined. The critical factors (e.g., morphology, dimensionality, light absorption, charge excitation/migration, catalytic sites, H 2 O 2 generation and activation) that determine the performance of CN‐based photocatalysts in Fenton‐like catalysis are systematically discussed. After examining the structure–activity relationship, research perspectives are proposed for further development of CN‐based photocatalysts toward more efficient photo‐Fenton‐like reactions and their application in practical water treatment.
Enhanced performance of g-C3N4/TiO2 photocatalysts for degradation of organic pollutants under visible light
Publisher: Elsevier BV
Date: 08-2015
Magnetically steerable iron oxides-manganese dioxide core-shell micromotors for organic and microplastic removals
Publisher: Elsevier BV
Date: 04-2021
One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase
Publisher: Elsevier BV
Date: 07-2013
DOI: 10.1016/J.JCIS.2013.03.070
Abstract: A cobalt hydroxide (Co(OH)2) nanoflake-reduced graphene oxide (rGO) hybrid was synthesized by a one-pot hydrothermal method using glucose as a reducing agent for graphene oxide (GO) reduction. The structural and surface properties of the material were investigated by scanning and transmission electron microscopies, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Catalytic activities of GO, rGO, Co(OH)2 and Co(OH)2-rGO in aqueous phenol degradation using peroxymonosulfate as an oxidant were compared. A synergetic effect on the catalytic activity was found on the Co(OH)2-rGO hybrid. Although rGO has weak catalytic activity, Co(OH)2-rGO hybrid showed a higher catalytic activity than Co(OH)2. The phenol degradation on Co(OH)2-rGO was extremely fast and took around 10 min for 100% phenol removal. The degradation was found to follow the first order kinetics and a mechanism for phenol degradation was presented.
Cobalt oxide functionalized ceramic membrane for 4-hydroxybenzoic acid degradation via peroxymonosulfate activation
Publisher: Elsevier BV
Date: 04-2023
New insight to the role of edges and heteroatoms in nanocarbons for oxygen reduction reaction
Publisher: Elsevier BV
Date: 12-2019
Manganese oxides at different oxidation states for heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions
Publisher: Elsevier BV
Date: 10-2013
Coal fly ash supported Co 3 O 4 catalysts for phenol degradation using peroxymonosulfate
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2RA20346D
Synthesis of carbon xerogels at varying sol–gel pHs, dye adsorption and chemical regeneration
Publisher: Elsevier BV
Date: 07-2011
High-speed graphene@Ag-MnO 2 micromotors at low peroxide levels
Publisher: Elsevier BV
Date: 10-2018
DOI: 10.1016/J.JCIS.2018.05.088
Abstract: Platinum (Pt) free micro/nanomotors (MNMs) using a low content of fuels are highly desired for many applications. Herein, we demonstrate that cathodic electrofabrication can produce modified MnO
Shape-controlled activation of peroxymonosulfate by single crystal α-Mn2 O3 for catalytic phenol degradation in aqueous solution
Publisher: Elsevier BV
Date: 07-2014
Roles of graphitization degree and surface functional groups of N-doped activated biochar for phenol adsorption
Publisher: Elsevier BV
Date: 10-2022
Tailored ionic liquid for metal-free carbons toward oxygen reduction reaction
Publisher: Elsevier BV
Date: 04-2021
Manganese oxide integrated catalytic ceramic membrane for degradation of organic pollutants using sulfate radicals
Publisher: Elsevier BV
Date: 12-2019
DOI: 10.1016/J.WATRES.2019.115110
Abstract: Membrane separation and advanced oxidation processes (AOPs) have been respectively demonstrated to be effective for a variety of water and/or wastewater treatments. Innovative integration of membrane with catalytic oxidation is thus expected to be more competing for more versatile applications. In this study, ceramic membranes (CMs) integrated with manganese oxide (MnO
Comparative investigation of photocatalytic degradation of toluene on nitrogen doped Ta2 O5 and Nb2 O5 nanoparticles
Publisher: American Chemical Society (ACS)
Date: 21-02-2013
DOI: 10.1021/IE302326H
Hierarchically porous hydrangea-like In2 S3 /In2 O3 heterostructures for enhanced photocatalytic hydrogen evolution
Publisher: Elsevier BV
Date: 04-2021
Manipulation of n → π* electronic transitions via implanting thiophene rings into two-dimensional carbon nitride nanosheets for efficient photocatalytic water purification
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA04975A
Abstract: Thiophene ring implanted two-dimensional carbon nitride nanosheets (2D Th ing -CNNS) with dramatically double elevated n → π* electronic transitions were synthesized. 2D Th ing -CNNS exhibited efficient photocatalytic bisphenol-A degradation.
Nanodiamonds in sp2/sp3 configuration for radical to nonradical oxidation
Publisher: Elsevier BV
Date: 03-2018
UVC-assisted photocatalytic degradation of carbamazepine by Nd-doped Sb2O3/TiO2 photocatalyst
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.JCIS.2019.11.094
Abstract: The photocatalytic degradation of carbamazepine (CBZ) in ultra-pure water was investigated by using neodymium (Nd)-doped antimony trioxide (Sb
Regulation of energetic hot carriers on Pt/TiO2 with thermal energy for photothermal catalysis
Publisher: Elsevier BV
Date: 07-2022
Acidification and bubble template derived porous g-C3N4 for efficient photodegradation and hydrogen evolution
Publisher: Elsevier BV
Date: 10-2020
Encapsulation of cuprous/cobalt sites in metal organic framework for enhanced C2H4/C2H6 separation
Publisher: Elsevier BV
Date: 02-2021
Excellent performance of mesoporous Co3O4/MnO2 nanoparticles in heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions
Publisher: Elsevier BV
Date: 10-2012
Nitrogen-doped graphene for generation and evolution of reactive radicals by metal-free catalysis
Publisher: American Chemical Society (ACS)
Date: 09-02-2015
DOI: 10.1021/AM508416N
Abstract: N-Doped graphene (NG) nanomaterials were synthesized by directly annealing graphene oxide (GO) with a novel nitrogen precursor of melamine. A high N-doping level, 8-11 at. %, was achieved at a moderate temperature. The s le of NG-700, obtained at a calcination temperature of 700 °C, showed the highest efficiency in degradation of phenol solutions by metal-free catalytic activation of peroxymonosulfate (PMS). The catalytic activity of the N-doped rGO (NG-700) was about 80 times higher than that of undoped rGO in phenol degradation. Moreover, the activity of NG-700 was 18.5 times higher than that of the most popular metal-based catalyst of nanocrystalline Co3O4 in PMS activation. Theoretical calculations using spin-unrestricted density functional theory (DFT) were carried out to probe the active sites for PMS activation on N-doped graphene. In addition, experimental detection of generated radicals using electron paramagnetic resonance (EPR) and competitive radical reactions was performed to reveal the PMS activation processes and pathways of phenol degradation on nanocarbons. It was observed that both (•)OH and SO4(•-) existed in the oxidation processes and played critical roles for phenol oxidation.
Selective oxidation of alcohols by graphene-like carbon with electrophilic oxygen and integrated pyridinic nitrogen active sites
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1NR03157K
Abstract: N-Doped graphene-like carbon was prepared via a metal-free method. Electrophilic oxygen and nitrogen species functioned as dual active sites to activate peroxymonosulfate to convert alcohol into aldehyde or ketone by radical and non-radical routes.
Biomass-derived functional porous carbons for adsorption and catalytic degradation of binary micropollutants in water
Publisher: Elsevier BV
Date: 05-2020
DOI: 10.1016/J.JHAZMAT.2019.121881
Abstract: The biomass, bottlebrush flower, is exploited for the preparation of functionalized porous carbons by one-pot thermal activation using NaHCO
Unzipping carbon nanotubes to nanoribbons for revealing the mechanism of nonradical oxidation by carbocatalysis
Publisher: Elsevier BV
Date: 11-2020
Synthesis of Co oxide doped carbon aerogel catalyst and catalytic performance in heterogeneous oxidation of phenol in water
Publisher: Elsevier BV
Date: 10-2011
Temperature-Induced Variations in Photocatalyst Properties and Photocatalytic Hydrogen Evolution: Differences in UV, Visible, and Infrared Radiation
Publisher: American Chemical Society (ACS)
Date: 23-04-2021
Supported cobalt catalysts by one-pot aqueous combustion synthesis for catalytic phenol degradation
Publisher: Elsevier BV
Date: 03-2013
DOI: 10.1016/J.JCIS.2012.11.017
Abstract: Cobalt oxides (Co) and Al(2)O(3)-, SiO(2)-, and TiO(2)-supported cobalt oxide catalysts were prepared by an aqueous combustion method using urea and glycine as fuels. Their catalytic performance in activation of OXONE® for phenol degradation in aqueous solution was investigated. It was found that unsupported Co oxide and supported Co oxide presented different mechanisms in activation of OXONE® for phenol degradation. The supported Co catalysts presented higher activity in activation of OXONE® for phenol degradation due to higher dispersion of Co(3)O(4) on the supports and Co(II) coordination sites. The major oxidizing radicals were identified to be SO(4)(-) by competitive radical reactions. The Co oxides synthesized from urea or glycine showed a similar activity however, the supported Co catalysts prepared by glycine fuel exhibited better activity than those prepared by urea. For Al(2)O(3)-, SiO(2)-, and TiO(2)-supported Co catalysts, Co/TiO(2) presented a higher activity in phenol degradation compared with Co/SiO(2) and Co/Al(2)O(3). But, Co/SiO(2) showed the best stability among the catalysts. Total organic carbon could be reduced by 80%, 72%, and 45% on Co/TiO(2), Co/SiO(2), and Co/Al(2)O(3), respectively, at 30 ppm phenol. Phenol degradation was found to follow the zero-order kinetics. The causes of deactivation were investigated, and the regeneration methods were proposed.
Egg-shaped core/shell α-Mn2O3@α-MnO2 as heterogeneous catalysts for decomposition of phenolics in aqueous solutions
Publisher: Elsevier BV
Date: 09-2016
DOI: 10.1016/J.CHEMOSPHERE.2016.06.021
Abstract: Novel uniform ellipsoid α-Mn2O3@α-MnO2 core/shell (McMs) nanocomposites were prepared via a hydrothermal process with a shape-control protocol followed by calcination at different temperatures. The properties of the composites were characterized by a number of techniques such as thermogravimetric analysis (TGA), X-ray diffraction (XRD), N2 adsorption, and scanning electron microscopy (SEM). The core/shell materials were much effective in heterogeneous oxone(®) activation to generate sulfate and hydroxyl radicals for degradation of aqueous phenol. The McMs composites demonstrated catalytic activity for 100% phenol decomposition in short duration varying between 20 and 120 min, much higher than that of homogeneous Mn(2+) system with 95% phenol degradation in 120 min. They also showed a higher activity than single-phase α-Mn2O3 or α-MnO2. The catalytic activity of phenol degradation depends on temperature, oxone(®) concentration, phenol concentration, and catalyst loading. The catalysts also showed a stable activity in several cycles. Kinetic study demonstrated that phenol degradation reactions follow a first order reaction on McMs catalysts giving activation energies at 32.1-68.8 kJ/mol. With the detection of radicals by electron paramagnetic resonance (EPR), the generation mechanism was proposed.
Photoelectrochemical Water Oxidation and Longevous Photoelectric Conversion by a Photosystem II Electrode
Publisher: Wiley
Date: 19-06-2021
Abstract: The immobilization of natural photosystem II (PSII) enzyme onto an artificial electrode offers an ingenious and promising avenue for semiartificial solar energy conversion. However, this process is significantly limited by the poor stability and the short life of PSII. Here, a new prototype of a semiartificial system is reported by anchoring PSII on polyethylenimine‐coated macroporous carbon electrode with a high load. Good electronic communication is established at the biointerface of this PSII electrode, enabling excellent photoelectrochemical (PEC) water oxidation and lasting electricity generation. The maximum turnover number of 10 200 ± 1380 mol O 2 per mol PSII dimer is obtained in this system at around 10 h before complete deactivation, reaching high current‐to‐O 2 conversion efficiencies. The functions of PSII to release O 2 both in light and dark conditions as well as for H 2 O 2 formation are revealed. Under periodic irradiation (AM 1.5G 1 sun), this PSII electrode allows for stable mediated photocurrent output of ≈4.31 µA cm −2 after five days, which represents the most stable photoelectric performance achieved so far for PSII‐related electrodes.
A new metal-free carbon hybrid for enhanced photocatalysis
Publisher: American Chemical Society (ACS)
Date: 25-09-2014
DOI: 10.1021/AM503820H
Abstract: Carbon nitride (C3N4) is a layered, stable, and polymeric metal-free material that has been discovered as a visible-light-response photocatalyst. Owing to C3N4 having a higher conduction band position, most previous studies have been focused on its reduction capability for solar fuel production, such as hydrogen generation from water splitting or hydrocarbon production from CO2. However, photooxidation ability of g-C3N4 is weak and has been less explored, especially for decomposition of chemically stable phenolics. Carbon spheres prepared by a hydrothermal carbonization of glucose have been widely applied as a support material or template due to their interesting physicochemical properties and the functional groups on the reactive surface. This study demonstrated that growth of carbon nanospheres onto g-C3N4 (CN-CS) can significantly increase the photooxidation ability (to about 4.79 times higher than that of pristine g-C3N4) in phenol degradation under artificial sunlight irradiations. The crystal structure, optical property, morphology, surface groups, recombination rate of electron/hole pairs, and thermal stability of CN-CS were investigated by a variety of characterization techniques. This study contributes to the further promising applications of carbon nitride in metal-free catalysis.
Catalytic oxidation of organic pollutants on pristine and surface nitrogen-modified carbon nanotubes with sulfate radicals
Publisher: Elsevier BV
Date: 07-2014
Primordial and recycled helium isotope signatures in the mantle transition zone
Publisher: American Association for the Advancement of Science (AAAS)
Date: 16-08-2019
Abstract: Helium isotopes provide a window into the very deepest and oldest parts of Earth's voluminous mantle. However, several processes tend to obscure the helium isotope signal from reservoirs in basaltic lavas that have erupted at the surface. Timmerman et al. identified a set of diamonds that formed deep within Earth and were rapidly erupted, which have avoided near-surface contamination. They find evidence for a deep, primordial rock source along with mixing of sediments from old subducting plates. The signatures extracted from these diamonds have implications for chemical and dynamic models of Earth. Science , this issue p. 692
Sustainable redox processes induced by peroxymonosulfate and metal doping on amorphous manganese dioxide for nonradical degradation of water contaminants
Publisher: Elsevier BV
Date: 06-2021
Metal-free activation of persulfate by cubic mesoporous carbons for catalytic oxidation via radical and nonradical processes
Publisher: Elsevier BV
Date: 06-2018
Red mud and fly ash supported Co catalysts for phenol oxidation
Publisher: Elsevier BV
Date: 09-2012
Origins of boron catalysis in peroxymonosulfate activation and advanced oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA04885E
Abstract: Amorphous boron is employed as a novel and high-performance metal-free catalyst for activation of peroxymonosulfate for degrading various organic contaminants in water.
Ultrafine copper nanoclusters and single sites for Fenton-like reactions with high atom utilities
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0EN00505C
Abstract: Fenton-like degradation of p -hydroxybenzoic acid by ultrafine copper nanoclusters and single sites exhibited high atom utilities and a wide working pH range.
Pt-Free microengines at extremely low peroxide levels
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CC01548A
Abstract: New FeO x –MnO 2 catalytic micromotors were developed with high speeds at extremely low H 2 O 2 fuel concentrations.
Cuprous/Vanadium Sites on MIL-101 for Selective CO Adsorption from Gas Mixtures with Superior Stability
Publisher: American Chemical Society (ACS)
Date: 06-2019
Three-dimensional BiOI/BiOX (X = Cl or Br) nanohybrids for enhanced visible-light photocatalytic activity
Publisher: MDPI AG
Date: 14-03-2017
DOI: 10.3390/NANO7030064
Insights into the Adsorption of VOCs on a Cobalt-Adeninate Metal–Organic Framework (Bio-MOF-11)
Publisher: American Chemical Society (ACS)
Date: 15-06-2020
2D Transition Metal Dichalcogenides and Graphene-Based Ternary Composites for Photocatalytic Hydrogen Evolution and Pollutants Degradation
Publisher: MDPI AG
Date: 15-03-2017
DOI: 10.3390/NANO7030062
The effect of carbon structure in chars on Fe migration and its catalytic activity for benzyl phenyl ether decomposition
Publisher: Elsevier BV
Date: 03-2021
Rational Catalyst Design for N2 Reduction under Ambient Conditions: Strategies toward Enhanced Conversion Efficiency
Publisher: American Chemical Society (ACS)
Date: 26-05-2020
Synthesis, characterization, and adsorption properties of magnetic Fe3O4@graphene nanocomposite
Publisher: Elsevier BV
Date: 03-2012
Metal-free activation of peroxymonosulfate by boron and nitrogen co-doped graphene nanotubes for catalytic oxidation of 4-hydroxybenzoic acid
Publisher: Elsevier BV
Date: 06-2022
Size-tailored porous spheres of manganese oxides for catalytic oxidation via peroxymonosulfate activation
Publisher: American Chemical Society (ACS)
Date: 19-07-2016
Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways
Publisher: American Chemical Society (ACS)
Date: 03-11-2020
Atomic heterojunction-induced accelerated charge transfer for boosted photocatalytic hydrogen evolution over 1D CdS nanorod/2D ZnIn2 S4 nanosheet composites
Publisher: Elsevier BV
Date: 12-2021
Highly dispersive Ru confined in porous ultrathin g-C3N4 nanosheets as an efficient peroxymonosulfate activator for removal of organic pollutants
Publisher: Elsevier BV
Date: 08-2022
DOI: 10.1016/J.JHAZMAT.2022.128939
Abstract: Ru species were loaded on a two-dimensional (2D) material of graphitic carbon nitride (2D g-C
0D (MoS2 )/2D (g-C3 N4 ) heterojunctions in Z-scheme for enhanced photocatalytic and electrochemical hydrogen evolution
Publisher: Elsevier BV
Date: 07-2018
Unveiling the active sites of graphene-catalyzed peroxymonosulfate activation
Publisher: Elsevier BV
Date: 10-2016
Magnetic Fe3 O4 /carbon sphere/cobalt composites for catalytic oxidation of phenol solutions with sulfate radicals
Publisher: Elsevier BV
Date: 06-2014
Co3 O4 nanocrystals with predominantly exposed facets: Synthesis, environmental and energy applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA12960H
Nonradical reactions in environmental remediation processes: Uncertainty and challenges
Publisher: Elsevier BV
Date: 05-2018
Laves phase precipitation in Ti-Zr-Fe-Cr alloys with high strength and large plasticity
Publisher: Elsevier BV
Date: 09-2018
Functional carbon nitride materials for water oxidation: from heteroatom doping to interface engineering
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0NR00652A
Abstract: Strategies for modifying polymeric carbon nitrides and their intrinsic structure–activity relationships for photo-, electro-, and photoelectro-chemical water oxidation are discussed.
Porous Carbons: Structure-Oriented Design and Versatile Applications
Publisher: Wiley
Date: 24-02-2020
Amorphous FeOOH Anchored on Boron and Nitrogen Codoped Carbon Nanotubes for Fenton-like Oxidation of Sulfamethoxazole
Publisher: American Chemical Society (ACS)
Date: 21-03-2023
Catalysis of a Single Transition Metal Site for Water Oxidation: From Mononuclear Molecules to Single Atoms
Publisher: Wiley
Date: 03-12-2019
Abstract: Low-cost, nonprecious transition metal (TM) catalysts toward efficient water oxidation are of critical importance to future sustainable energy technologies. The advances in structure engineering of water oxidation catalysts (WOCs) with single TM centers as active sites, for ex le, single metallic molecular complexes (SMMCs), supported SMMCs, and single-atom catalysts (SACs) in recent reports are examined. The efforts made on these configurations in terms of design principle, advanced characterization, performances and theoretical studies, are critically reviewed. A clear roadmap with the correlations between the single-TM-site-based structures (coordination and geometric structure, TM species, support), and the catalytic performances in water oxidation is provided. The insights bridging SMMCs with SACs are also given. Finally, the challenges and opportunities in the single-TM-site catalysis are proposed.
Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3NR04282K
Abstract: Physical and chemical activation of reduced graphene oxide (RGO) using different reagents, CO2, ZnCl2 and CO2/ZnCl2, to obtain highly porous and metal-free carbonaceous materials was carried out and their adsorption and catalytic behavior were investigated. Physical activation using CO2 was proved to be much more effective than chemical ZnCl2 activation, and increased the specific surface area (SSA) of RGO from ~200 to higher than 600 m(2) g(-1). Methylene blue (MB) was then used to evaluate the adsorption and catalytic activity of the activated RGO (A-RGO) materials with peroxymonosulfate (PMS) as an oxidant. It was found that the SSA and oxygen containing groups are two important factors determining the adsorptive and catalytic performance of the A-RGO materials. RGO by physicochemical CO2/ZnCl2 activation presented the best adsorption and RGO by physical CO2 activation exhibited the highest catalytic degradation of MB.
Bread-making synthesis of hierarchically Co@C nanoarchitecture in heteroatom doped porous carbons for oxidative degradation of emerging contaminants
Publisher: Elsevier BV
Date: 06-2018
Co-SBA-15 for heterogeneous oxidation of phenol with sulfate radical for wastewater treatment
Publisher: Elsevier BV
Date: 10-2011
Nanocarbons in different structural dimensions (0-3D) for phenol adsorption and metal-free catalytic oxidation
Publisher: Elsevier BV
Date: 12-2015
Single-atom catalysts on metal-based supports for solar photoreduction catalysis
Publisher: Elsevier BV
Date: 09-2022
Ultra-sustainable Fe 78 Si 9 B 13 metallic glass as a catalyst for activation of persulfate on methylene blue degradation under UV-Vis light
Publisher: Springer Science and Business Media LLC
Date: 06-12-2016
DOI: 10.1038/SREP38520
Abstract: Stability and reusability are important characteristics of advanced catalysts for wastewater treatment. In this work, for the first time, sulfate radicals (SO 4 ∙ − ) with a high oxidative potential (E o = 2.5–3.1 V) were successfully activated from persulfate by a Fe 78 Si 9 B 13 metallic glass. This alloy exhibited a superior surface stability and reusability while activating persulfate as indicated by it being used for 30 times while maintaining an acceptable methylene blue (MB) degradation rate. The produced SiO 2 layer on the ribbon surface expanded strongly from the fresh use to the 20 th use, providing stable protection of the buried Fe. MB degradation and kinetic study revealed 100% of the dye degradation with a kinetic rate k = 0.640 within 20 min under rational parameter control. The dominant reactive species for dye molecule decomposition in the first 10 min of the reaction was hydroxyl radicals (∙OH, E o = 2.7 V) and in the last 10 min was sulfate radicals (SO 4 ∙ − ), respectively. Empirical operating variables for dye degradation in this work were under catalyst dosage 0.5 g/L, light irradiation 7.7 μW/cm 2 , and persulfate concentration 1.0 mmol/L. The amorphous Fe 78 Si 9 B 13 alloy in this work will open a new gate for wastewater remediation.
Insights into Heterogeneous Catalysis of Persulfate Activation on Dimensional-Structured Nanocarbons
Publisher: American Chemical Society (ACS)
Date: 07-07-2015
Temperature dependent photocatalysis of g-C 3 N 4 , TiO 2 and ZnO: Differences in photoactive mechanism
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.JCIS.2018.07.131
Abstract: Photocatalysis has been believed as one of the green and sustainable avenues to address energy and environmental crises by converting solar energy to chemical energy via reactions. Temperature is usually a vital factor controlling kinetics and thermodynamics of a reaction, but it has been less investigated in photocatalysis. In this work, the effect of reaction temperature on photocatalysis was investigated in a simple process, photocatalytic degradation of Congo Red (CR) on three typical catalysts, g-C
Nanoscale in Photocatalysis
Publisher: MDPI AG
Date: 17-04-2017
DOI: 10.3390/NANO7040086
Surface aging behaviour of Fe-based amorphous alloys as catalysts during heterogeneous photo Fenton-like process for water treatment
Publisher: Elsevier BV
Date: 05-2017
Tailoring collaborative N–O functionalities of graphene oxide for enhanced selective oxidation of benzyl alcohol
Publisher: Elsevier BV
Date: 09-2021
Novel polyoxometalateatg-C<inf>3</inf>N<inf>4</inf> hybrid photocatalysts for degradation of dyes and phenolics
Publisher: Elsevier BV
Date: 10-2015
DOI: 10.1016/J.JCIS.2015.06.003
Abstract: Graphitic carbon nitride (g-C3N4) is an emerging metal-free catalyst, and has attracted considerate research interests in photocatalysis. For improving the low photocatalytic activity due to the polymeric nature, a variety of methods have been developed. In this study, polyoxometalate (POMs) functionalized g-C3N4 were synthesized using a facile hydrothermal method as novel photocatalysts. The photocatalysts were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), N2 sorption isotherms, thermogravimetric analysis (TGA), and UV-vis diffusion reflectance spectroscopy (UV-vis DRS). The photocatalytic properties were evaluated in photodecomposition of aqueous methylene blue (MB) and phenol under UV-visible light irradiations. Compared to pristine g-C3N4, POMs modified s les demonstrated enhanced efficiencies in photodegradation of MB and phenol. It was suggested that increased specific surface area, porous volume and efficient charge transfer would be responsible for the improved photocatalysis. This study proves the promising role of POMs in modification of novel photocatalysts.
One-step synthesis of flour-derived functional nanocarbons with hierarchical pores for versatile environmental applications
Publisher: Elsevier BV
Date: 09-2018
Nickel in hierarchically structured nitrogen-doped graphene for robust and promoted degradation of antibiotics
Publisher: Elsevier BV
Date: 05-2019
Removal of phenol using sulphate radicals activated by natural zeolite-supported cobalt catalysts
Publisher: Springer Science and Business Media LLC
Date: 20-11-2013
Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis
Publisher: Elsevier BV
Date: 07-2015
Synergy of intermolecular Donor-Acceptor and ultrathin structures in crystalline carbon nitride for efficient photocatalytic hydrogen evolution
Publisher: Elsevier BV
Date: 02-2022
Preparation of a p-n heterojunction BiFeO3@TiO2 photocatalyst with a core-shell structure for visible-light photocatalytic degradation
Publisher: Elsevier BV
Date: 06-2017
Superior performance of FeVO4@CeO2 uniform core-shell nanostructures in heterogeneous Fenton-sonophotocatalytic degradation of 4-nitrophenol
Publisher: Elsevier BV
Date: 2020
DOI: 10.1016/J.JHAZMAT.2019.121059
Abstract: Porous FeVO
Phosphorous doped carbon nitride nanobelts for photodegradation of emerging contaminants and hydrogen evolution
Publisher: Elsevier BV
Date: 11-2019
Magnetic Ni-Co alloy encapsulated N-doped carbon nanotubes for catalytic membrane degradation of emerging contaminants
Publisher: Elsevier BV
Date: 04-2019
Template-free synthesis of N-doped carbon with pillared-layered pores as bifunctional materials for supercapacitor and environmental applications
Publisher: Elsevier BV
Date: 07-2017
Magnetic CoFe2O4–Graphene Hybrids: Facile Synthesis, Characterization, and Catalytic Properties
Publisher: American Chemical Society (ACS)
Date: 18-04-2012
DOI: 10.1021/IE300271P
Hydrothermal Synthesis of Co3O4–Graphene for Heterogeneous Activation of Peroxymonosulfate for Decomposition of Phenol
Publisher: American Chemical Society (ACS)
Date: 12-11-2012
DOI: 10.1021/IE301642G
Mechanism of the doping species controlling the UV photocatalytic activity of nitrogen doped TiO2
Publisher: China Science Publishing & Media Ltd.
Date: 11-06-2009
Quasi-MOF derivative-based electrode for efficient electro-Fenton oxidation
Publisher: Elsevier BV
Date: 2021
Effects of cobalt salts on biomass conversion to functional carbon-based catalysts for peroxymonosulfate activation
Publisher: Elsevier BV
Date: 08-2023
Versatile heterojunction of gold nanoparticles modified phosphorus doped carbon nitride for enhanced photo-electrocatalytic sensing and degradation of 4-chlorophenol
Publisher: Elsevier BV
Date: 02-2023
DOI: 10.1016/J.JCIS.2022.11.047
Abstract: Increasing water pollution has imposed great threats to public health, and made efficient monitoring and remediation technologies critical to a clean environment. In this study, a versatile heterojunction of Au nanoparticles modified phosphorus doped carbon nitride (Au/P-CN) is designed and fabricated. The Au/P-CN heterostructure demonstrates improved light absorption, rapid separation of charge carriers, and improved electrical conductivity. Taking the toxic 4-chlorophenol (4-CP) as an ex le, an ultrasensitive photoelectrochemical (PEC) sensor is successfully demonstrated, exhibiting a wide linear range (0.1-52.1 μM), low detection limit (∼0.02 μM), significant stability and selectivity, as well as reliable analysis in real s les. Moreover, efficient photocatalytic degradation with a high removing efficiency (∼87%) toward 4-CP is also achieved, outperforming its counterpart of Au nanoparticles (NPs) modified graphitic carbon nitride (Au/g-CN, ∼59%). This work paves a new way for efficient and simultaneous detection and remediation of organic pollutants over versatile photoactive catalysts.
Cobalt@nitrogen-doped bamboo-structured carbon nanotube to boost photocatalytic hydrogen evolution on carbon nitride
Publisher: Elsevier BV
Date: 10-2019
Visible-light-driven TiO2 catalysts doped with low-concentration nitrogen species
Publisher: Elsevier BV
Date: 2008
High-strength β stabilized Ti-Nb-Fe-Cr alloys with large plasticity
Publisher: Elsevier BV
Date: 08-2018
Recent advances in non-metal modification of graphitic carbon nitride for photocatalysis: A historic review
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CY01195K
Abstract: This review provides a comprehensive survey and critical comments on the development of photocatalysts with a focus on the metal-free materials.
Functionalized UiO-66 by Single and Binary (OH)2 and NO2 Groups for Uptake of CO2 and CH4
Publisher: American Chemical Society (ACS)
Date: 06-01-2016
Research Advances in the Synthesis of Nanocarbon-Based Photocatalysts and Their Applications for Photocatalytic Conversion of Carbon Dioxide to Hydrocarbon Fuels
Publisher: American Chemical Society (ACS)
Date: 31-10-2014
DOI: 10.1021/EF401426X
One-pot synthesis of N-doped graphene for metal-free advanced oxidation processes
Publisher: Elsevier BV
Date: 06-2016
Halogen element modified titanium dioxide for visible light photocatalysis
Publisher: Elsevier BV
Date: 08-2010
Morphology/facet-dependent photo-Fenton-like degradation of pharmaceuticals and personal care products over hematite nanocrystals
Publisher: Elsevier BV
Date: 03-2022
Metal-free catalytic ozonation on surface-engineered graphene: Microwave reduction and heteroatom doping
Publisher: Elsevier BV
Date: 2019
Kinetics and mechanism of synergistic adsorption and persulfate activation by N-doped porous carbon for antibiotics removals in single and binary solutions
Publisher: Elsevier BV
Date: 02-2022
DOI: 10.1016/J.JHAZMAT.2021.127083
Abstract: Porous carbon serves as a green material for efficient wastewater purification by adsorption and advanced oxidation processes. However, a clear understanding of the simultaneous removal of multiple pollutants in water is still ambiguous. Herein, the synergistic effect of adsorption and peroxydisulfate (PS) activation on kinetics and mechanism of removing single and binary antibiotic pollutants, sulfamethoxazole (SMX) and ibuprofen (IBP), from water by biomass-derived N-doped porous carbon was investigated. Our findings suggest that adsorption contributed to efficient removals of SMX/IBP. Comparative quenching experiments and electrochemical analysis demonstrated that hydroxyl (•OH) and sulfate (SO
Activated carbon supported cobalt catalysts for advanced oxidation of organic contaminants in aqueous solution
Publisher: Elsevier BV
Date: 20-10-2010
Ultrathin nickel-cobalt inorganic-organic hydroxide hybrid nanobelts as highly efficient electrocatalysts for oxygen evolution reaction
Publisher: Elsevier BV
Date: 09-2019
Photocatalytic reforming of lignocellulose: A review
Publisher: Elsevier BV
Date: 08-2023
Facile synthesis of nitrogen doped reduced graphene oxide as a superior metal-free catalyst for oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC43401J
Abstract: Nitrogen (5.61 at%) doped reduced graphene oxide synthesized via a facile method was demonstrated as a superior metal-free catalyst for activation of peroxymonosulfate. Codoping with boron would further enhance the catalytic activity and the stability, providing a promising green material for environmental remediation.
Catalytic degradation of antibiotics by metal-free catalysis over nitrogen-doped graphene
Publisher: Elsevier BV
Date: 11-2020
Metal-free hybrids of graphitic carbon nitride and nanodiamonds for photoelectrochemical and photocatalytic applications
Publisher: Elsevier BV
Date: 05-2017
DOI: 10.1016/J.JCIS.2017.01.038
Abstract: Graphitic carbon nitride (g-C
Bifunctionalized Metal Organic Frameworks, UiO-66-NO2-N (N = -NH2, -(OH)2, -(COOH)2), for Enhanced Adsorption and Selectivity of CO2 and N2<
Publisher: American Chemical Society (ACS)
Date: 11-06-2015
Core/shell FeVO4@BiOCl heterojunction as a durable heterogeneous Fenton catalyst for the efficient sonophotocatalytic degradation of p-nitrophenol
Publisher: Elsevier BV
Date: 2020
Photothermal catalytic C1 conversion on supported catalysts
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3YA00315A
Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CY01967B
Abstract: Catalytic ozonation has attracted intensive attention due to its efficient degradation of various organic pollutants in water.
Challenges in radical/nonradical-based advanced oxidation processes for carbon recycling
Publisher: Elsevier BV
Date: 08-2022
Wet-chemical synthesis of InTaO 4 for photocatalytic decomposition of organic contaminants in air and water with UV-vis light
Publisher: American Chemical Society (ACS)
Date: 29-06-2012
DOI: 10.1021/IE200544Z
Nano-Fe0 encapsulated in microcarbon spheres: Synthesis, characterization, and environmental applications
Publisher: American Chemical Society (ACS)
Date: 05-11-2012
DOI: 10.1021/AM301829U
Abstract: Nanoscaled zerovalent iron (ZVI) encapsulated in carbon spheres (nano-Fe⁰@CS) were prepared via a hydrothermal carbonization method, using glucose and iron(III) nitrate as precursors. The properties of the nano-Fe⁰@CS were investigated by X-ray diffraction (XRD), thermogravimetric analysis-differential scanning calorimetry (TGA-DSC), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption/desorption isotherms. Nano-Fe⁰@CS was demonstrated, for the first time, as an effective material in activating Oxone (peroxymonosulfate, PMS) for the oxidation of organic pollutants. It was found that the efficiency of nano-Fe⁰@CS was higher than ZVI particles, iron ions, iron oxides, and a cobalt oxide. The mechanism of the high performance was discussed. The structure of the nano-Fe⁰@CS not only leads to high efficiency in the activation of PMS, but also good stability. This study extended the application of ZVI from reductive destruction of organics to oxidative degradation of organics by providing a green material for environmental remediation.
Atomically dispersed cobalt on graphitic carbon nitride as a robust catalyst for selective oxidation of ethylbenzene by peroxymonosulfate
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0TA11503G
Abstract: A Co single-atom catalyst on g-C 3 N 4 support was prepared for the selective oxidation of ethylbenzene (EB) to acetophenone (AcPO) by peroxymonosulfate (PMS). The Co atoms bonded with N were robust active sites for EB oxidation via the radical pathway.
Intrinsic Mechanisms of Morphological Engineering and Carbon Doping for Improved Photocatalysis of 2D/2D Carbon Nitride Van Der Waals Heterojunction
Publisher: Wiley
Date: 13-05-2022
DOI: 10.1002/EEM2.12365
Abstract: Van der Waals (VDW) heterojunctions in a 2D/2D contact provide the highest area for the separation and transfer of charge carriers. In this work, a top‐down strategy with a gas erosion process was employed to fabricate a 2D/2D carbon nitride VDW heterojunction in carbon nitride (g‐C 3 N 4 ) with carbon‐rich carbon nitride. The created 2D semiconducting channel in the VDW structure exhibits enhanced electric field exposure and radiation absorption, which facilitates the separation of the charge carriers and their mobility. Consequently, compared with bulk g‐C 3 N 4 and its nanosheets, the photocatalytic performance of the fabricated carbon nitride VDW heterojunction in the water splitting reaction to hydrogen is improved by 8.6 and 3.3 times, respectively, while maintaining satisfactory photo‐stability. Mechanistically, the finite element method (FEM) was employed to evaluate and clarify the contributions of the formation of VDW heterojunction to enhanced photocatalysis, in agreement quantitatively with experimental ones. This study provides a new and effective strategy for the modification and more insights to performance improvement on polymeric semiconductors in photocatalysis and energy conversion.
Green Synthesis of Carbon Quantum Dots for Sensitized Solar Cells
Publisher: Wiley
Date: 14-02-2017
Degradation of Cosmetic Microplastics via Functionalized Carbon Nanosprings
Publisher: Elsevier BV
Date: 09-2019
Synthesis of magnetic carbon supported manganese catalysts for phenol oxidation by activation of peroxymonosulfate
Publisher: MDPI AG
Date: 26-12-2017
DOI: 10.3390/CATAL7010003
Photocatalytic decomposition of 4-chlorophenol over an efficient N-doped TiO2 under sunlight irradiation
Publisher: Elsevier BV
Date: 2009
Reduced graphene oxide for catalytic oxidation of aqueous organic pollutants
Publisher: American Chemical Society (ACS)
Date: 18-09-2012
DOI: 10.1021/AM301372D
Abstract: We discovered that chemically reduced graphene oxide, with an I(D)/I(G) >1.4 (defective to graphite) can effectively activate peroxymonosulfate (PMS) to produce active sulfate radicals. The produced sulfate radicals (SO(4)(•-)) are powerful oxidizing species with a high oxidative potential (2.5-3.1 vs 2.7 V of hydroxyl radicals), and can effectively decompose various aqueous contaminants. Graphene demonstrated a higher activity than several carbon allotropes, such as activated carbon (AC), graphite powder (GP), graphene oxide (GO), and multiwall carbon nanotube (MWCNT). Kinetic study of graphene catalyzed activation of PMS was carried out. It was shown that graphene catalysis is superior to that on transition metal oxide (Co(3)O(4)) in degradation of phenol, 2,4-dichlorophenol (DCP) and a dye (methylene blue, MB) in water, therefore providing a novel strategy for environmental remediation.
Nitrogen defects/boron dopants engineered tubular carbon nitride for efficient tetracycline hydrochloride photodegradation and hydrogen evolution
Publisher: Elsevier BV
Date: 04-2022
Heterogeneous activation of peroxymonosulfate by Co-doped Fe2 O3 nanospheres for degradation of p-hydroxybenzoic acid
Publisher: Elsevier BV
Date: 12-2021
Effects of amino functionality on uptake of CO2, CH4 and selectivity of CO2/CH4 on titanium based MOFs
Publisher: Elsevier BV
Date: 11-2015
Graphene facilitated visible light photodegradation of methylene blue over titanium dioxide photocatalysts
Publisher: Elsevier BV
Date: 2013
Comment on activation of Persulfate by Graphitized Nanodiamonds for Removal of Organic Compounds
Publisher: American Chemical Society (ACS)
Date: 14-04-2017
Nitrogen- and Sulfur-Codoped Hierarchically Porous Carbon for Adsorptive and Oxidative Removal of Pharmaceutical Contaminants
Publisher: American Chemical Society (ACS)
Date: 09-03-2016
Abstract: Heteroatom (nitrogen and sulfur)-codoped porous carbons (N-S-PCs) with high surface areas and hierarchically porous structures were successfully synthesized via direct pyrolysis of a mixture of glucose, sodium bicarbonate, and thiourea. The resulting N-S-PCs exhibit excellent adsorption abilities and are highly efficient for potassium persulfate activation when employed as catalysts for the oxidative degradation of sulfachloropyridazine (SCP) solutions. The adsorption capacities of N-S-PC-2 (which contains 4.51 atom % nitrogen and 0.22 atom % sulfur and exhibits SBET of 1608 m(2) g(-1)) are 73, 7, and 3 times higher than those of graphene oxide, reduced graphene oxide, and commercial single-walled carbon nanotube, respectively. For oxidation, the reaction rate constant of N-S-PC-2 is 0.28 min(-1). This approach not only contributes to the large-scale production and application of high-quality catalysts in water remediation but also provides an innovative strategy for the production of heteroatom-doped PCs for energy applications.
Flux-assisted synthesis of bismuth nanoparticle decorated carbon nitride for efficient photocatalytic degradation of endocrine disrupting compound
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2DT02900F
Abstract: Highly dispersed Bi would be served as cocatalysts to improve the separation of electron–hole carriers on the carbon nitride surface and provide more active sites for the photodegradation reaction of endocrine disrupting compound.
Efficient photocatalytic overall water splitting on metal-free 1D SWCNT/2D ultrathin C3N4 heterojunctions via novel non-resonant plasmonic effect
Publisher: Elsevier BV
Date: 12-2020
Heterogeneous activation of peroxymonosulfate by hierarchically porous cobalt/iron bimetallic oxide nanosheets for degradation of phenol solutions
Publisher: Elsevier BV
Date: 10-2020
Design and Synthesis of a New Mannitol Stearate Ester-Based Aluminum Alkoxide as a Novel Tri-Functional Additive for Poly(Vinyl Chloride) and Its Synergistic Effect with Zinc Stearate
Publisher: MDPI AG
Date: 11-06-2019
Abstract: Thermal stabilizers, lubricant, and plasticizers are three crucial additives for processing poly(vinyl chloride) (PVC). In this study, a new mannitol stearate ester-based aluminum alkoxide (MSE-Al) was designed and synthesized as a novel additive for PVC. The thermal stability and processing performance of PVC stabilized by MSE-Al were evaluated by the Congo red test, conductivity measurement, thermal aging test, ultravioletevisible (UV–Vis) spectroscopy test, and torque rheometer test. Results showed that the addition of MSE-Al could not only markedly improve the long-term thermal stability of PVC, but also greatly accelerate the plasticizing and decrease the balance torque, which demonstrated that MSE-Al possessed a lubricating property. Thus, MSE-Al was demonstrated to be able to provide tri-functional additive roles, e.g., thermal stabilizer, plasticizer, and lubricant. The test results for the thermal stability of PVC indicated that the initial whiteness of PVC stabilized by MSE-Al was not good enough, thus the synergistic effect of MSE-Al with zinc stearates (ZnSt2) on the thermal stability of PVC was also investigated. The results showed that there is an appreciable synergistic effect between MSE-Al and ZnSt2. The thermal stabilization mechanism and synergism effect of MSE-Al with ZnSt2 are then discussed.
Carbon nitride-based Z-scheme photocatalysts for non-sacrificial overall water splitting
Publisher: Elsevier BV
Date: 2022
Fundamental Advances in Biomass Autothermal/Oxidative Pyrolysis: A Review
Publisher: American Chemical Society (ACS)
Date: 20-07-2020
Nanosized Co3 O4 /SiO2 for heterogeneous oxidation of phenolic contaminants in waste water
Publisher: Elsevier BV
Date: 02-2011
Heterogeneous electro-Fenton catalysis with self-supporting CFP@MnO2 -Fe3 O4 /C cathode for shale gas fracturing flowback wastewater
Publisher: Elsevier BV
Date: 06-2021
Synergy of NiO quantum dots and temperature on enhanced photocatalytic and thermophoto hydrogen evolution
Publisher: Elsevier BV
Date: 06-2020
Enhanced adsorption and visible-light photocatalysis on TiO2 with in situ formed carbon quantum dots
Publisher: Springer Science and Business Media LLC
Date: 25-03-2022
DOI: 10.1007/S11356-022-19810-X
Abstract: Carbon quantum dots (CQDs) can be used to modify TiO
Conversion and transformation of N species during pyrolysis of wood-based panels: A review
Publisher: Elsevier BV
Date: 02-2021
Corrosion behavior and mechanisms of the heat-treated Ti5Cu produced by laser powder bed fusion
Publisher: Elsevier BV
Date: 08-2023
Efficient electro-Fenton processes on a novel self-supported single-atom Fe electrode: Mechanism and practical application
Publisher: Elsevier BV
Date: 11-2023
Heterogeneous activation of persulfate by macroscopic nitrogen-doped graphene oxide cubes for the degradation of antibiotic contaminants in water
Publisher: Elsevier BV
Date: 08-2023
Facile Synthesis of Di-Mannitol Adipate Ester-Based Zinc Metal Alkoxide as a Bi-Functional Additive for Poly(Vinyl Chloride)
Publisher: MDPI AG
Date: 06-05-2019
Abstract: A new di-mannitol adipate ester-based zinc metal alkoxide (DMAE-Zn) was synthesized as a bi-functional poly(vinyl chloride) (PVC) thermal stabilizer for the first time. The materials were characterized with Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Characterization results confirmed the formation of Zn–O bonds in DMAE-Zn, and confirmed that DMAE-Zn had a high decomposition temperature and a low melting point. The thermal stability of DMAE-Zn on PVC also was tested by a conductivity test, a thermal aging test, and a UV-visible spectroscopy (UV-VIS) test. PVC stabilized by DMAE-Zn had a good initial color and excellent long-term stability. UV-VIS also showed that the conjugated structure in PVC stabilized by DMAE-Zn was almost all of the triene, suggesting that the addition of DMAE-Zn would suppress the formation of conjugated structures above tetraene. The dynamic processing performance of PVC s les tested by torque rheometer indicated that, having a good compatibility with PVC chains in the amorphous regions, DMAE-Zn contributed a good plasticizing effect to PVC. DMAE-Zn thus effectively demonstrates bi-functional roles, e.g., thermal stabilizers and plasticizers to PVC. Furthermore, FT-IR, a HCl absorption capacity test, and a complex ZnCl2 test were also used to verify the thermal stability mechanism of DMAE-Zn for PVC.
Ag2MoO4 nanoparticles encapsulated in g-C3N4 for sunlight photodegradation of pollutants
Publisher: Elsevier BV
Date: 10-2018
Metal-Free Carbocatalysis in Advanced Oxidation Reactions
Publisher: American Chemical Society (ACS)
Date: 03-2018
DOI: 10.1021/ACS.ACCOUNTS.7B00535
Abstract: Catalytic processes have remarkably boosted the rapid industrializations in chemical production, energy conversion, and environmental remediation. As one of the emerging applications of carbocatalysis, metal-free nanocarbons have demonstrated promise as catalysts for green remediation technologies to overcome the poor stability and undesirable metal leaching in metal-based advanced oxidation processes (AOPs). Since our reports of heterogeneous activation of persulfates with low-dimensional nanocarbons, the novel oxidative system has raised tremendous interest for degradation of organic contaminants in wastewater without secondary contamination. In this Account, we showcase our recent contributions to metal-free catalysis in advanced oxidation, including design of nanocarbon catalysts, exploration of intrinsic active sites, and identification of reactive species and reaction pathways, and we offer perspectives on carbocatalysis for future environmental applications. The journey starts with the discovery of peroxymonosulfate (PMS) and peroxydisulfate (PDS) activation by graphene-based materials. With the systematic investigations on most carbon allotropes, for the first time the carbocatalysis for PMS or PDS activation was correlated with the pristine carbon configuration, oxygen functionality (ketonic groups), defect degree (exposed edge sites and vacancies), and dimensional structure. Moreover, an intrinsic difference in catalytic oxidation does exist between PMS and PDS activation. For ex le, the PMS/carbon reaction is dominated by free radicals, while PDS/carbon catalysis was unveiled as a singlet oxygen- or nonradical-based process in which the surface-activated PDS complex directly degrades the organic pollutants without relying on the generation of free radicals. Nitrogen doping significantly enhances the carbocatalysis because of the positively charged carbon domains, which strongly bind with persulfates to form reactive intermediates toward organic reactions. More importantly, N doping substantially alters the catalytic oxidation from a radical process to a nonradical pathway in PMS activation. Codoping of sulfur or boron with nitrogen at a rational level will synergistically promote the catalysis as a result of the formation of more catalytic centers by improved charge/spin redistribution of the carbon framework. Furthermore, a structure-performance relationship was established for annealed nanodiamonds with a characteristic sp
Oxygen Vacancies in Shape Controlled Cu2O/Reduced Graphene Oxide/In2O3 Hybrid for Promoted Photocatalytic Water Oxidation and Degradation of Environmental Pollutants
Publisher: American Chemical Society (ACS)
Date: 27-03-2017
Abstract: A novel shape controlled Cu
Unraveling the phosphorus-nitrogen bridge in carbon quantum dots/carbon nitride for efficient photodegradation of organic contaminants
Publisher: Elsevier BV
Date: 02-2023
Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism
Publisher: American Chemical Society (ACS)
Date: 06-04-2016
Abstract: Nanocarbons have been demonstrated as promising environmentally benign catalysts for advanced oxidation processes (AOPs) upgrading metal-based materials. In this study, reduced graphene oxide (rGO) with a low level of structural defects was synthesized via a scalable method for catalytic ozonation of p-hydroxylbenzoic acid (PHBA). Metal-free rGO materials were found to exhibit a superior activity in activating ozone for catalytic oxidation of organic phenolics. The electron-rich carbonyl groups were identified as the active sites for the catalytic reaction. Electron spin resonance (ESR) and radical competition tests revealed that superoxide radical ((•)O2(-)) and singlet oxygen ((1)O2) were the reactive oxygen species (ROS) for PHBA degradation. The intermediates and the degradation pathways were illustrated from mass spectroscopy. It was interesting to observe that addition of NaCl could enhance both ozonation and catalytic ozonation efficiencies and make ·O2(-) as the dominant ROS. Stability of the catalysts was also evaluated by the successive tests. Loss of specific surface area and changes in the surface chemistry were suggested to be responsible for catalyst deactivation.
Flower-like Cobalt Hydroxide/Oxide on Graphitic Carbon Nitride for Visible-Light-Driven Water Oxidation
Publisher: American Chemical Society (ACS)
Date: 15-12-2016
Abstract: Direct water oxidation via photocatalysis is a four-electron and multiple-proton process which requires high extra energy input to produce free dioxygen gas, making it exacting, especially under visible light irradiation. To improve the oxygen evolution reaction rates (OERs) and utilize more visible light, flower-like cobalt hydroxide/oxide (Fw-Co(OH)
Rigorous and reliable operations for electrocatalytic nitrogen reduction
Publisher: Elsevier BV
Date: 12-2020
Adsorptive remediation of environmental pollutants using novel graphene-based nanomaterials
Publisher: Elsevier BV
Date: 06-2013
Morphology-dependent photocatalysis of graphitic carbon nitride for sustainable remediation of aqueous pollutants: A mini review
Publisher: Elsevier BV
Date: 06-2022
Insights into N-doping in single-walled carbon nanotubes for enhanced activation of superoxides: A mechanistic study
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC05101K
Abstract: Nitrogen-doped SWCNTs with enhanced carbocatalysis were investigated in the activation of superoxides by advanced oxidation and theoretical calculations.
Effects of pH values on the physicochemical properties and photocatalytic activities of nitrogen-doped TiO2
Publisher: China Science Publishing & Media Ltd.
Date: 04-08-2008
Worm-like FeS2/TiO2 Nanotubes for Photoelectrocatalytic Reduction of CO2 to Methanol under Visible Light
Publisher: American Chemical Society (ACS)
Date: 19-02-2018
Adsorptive removal of antibiotic sulfonamide by UiO-66 and ZIF-67 for wastewater treatment
Publisher: Elsevier BV
Date: 08-2017
DOI: 10.1016/J.JCIS.2017.04.001
Abstract: Adsorptive removal of a toxic sulfonamide antibiotic, sulfachloropyradazine (SCP), from aqueous solution was studied on several metal organic frameworks, UiO-66 and ZIF-67, for the first time. UiO-66 exhibited a much higher adsorption capacity than ZIF-67, fast kinetics, and easy regeneration for reuse, demonstrating as a promising adsorbent in wastewater treatment processes. The batch adsorption shows an adsorption capacity of SCP at 417mg/g on UiO-66. The kinetic adsorption of SCP on UiO-66 reached equilibrium just in 10min and the kinetics fits accurately with a pseudo 2nd order model. A plausible mechanism was proposed based on pH effect, pK
Room-light-induced indoor air purification using an efficient Pt/N-TiO2 photocatalyst
Publisher: Elsevier BV
Date: 10-2011
Visible light photocatalytic degradation of organics on nanoparticles of bi-metallic oxides
Publisher: Elsevier BV
Date: 03-2012
Solar Photocatalytic Water Oxidation and Purification on ZIF-8-Derived C-N-ZnO Composites
Publisher: American Chemical Society (ACS)
Date: 19-10-2017
Decomposition of benzyl phenyl ether over char-supported Ni: The effect of char structures
Publisher: Elsevier BV
Date: 10-2021
Tandem internal electric fields in intralayer/interlayer carbon nitride homojunction with a directed flow of photo-excited electrons for photocatalysis
Publisher: Elsevier BV
Date: 09-2023
Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs): A short review
Publisher: Elsevier BV
Date: 04-2021
Deformation and strength characteristics of Laves phases in titanium alloys
Publisher: Elsevier BV
Date: 10-2019
Carbon nitride photocatalysts
Publisher: Elsevier
Date: 2018
Design and engineering heterojunctions for the photoelectrochemical monitoring of environmental pollutants: A review
Publisher: Elsevier BV
Date: 07-2019
Prospects of Solar Fuels
Publisher: Wiley
Date: 29-03-2021
Facile synthesis of Co-N-rGO composites as an excellent electrocatalyst for oxygen reduction reaction
Publisher: Elsevier BV
Date: 02-2019
Activated carbons as green and effective catalysts for generation of reactive radicals in degradation of aqueous phenol
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA42455C
Photocatalytic and Photoelectrochemical Reforming of Methane
Publisher: Wiley
Date: 29-03-2021
Photocatalytic and Photoelectrochemical Nitrogen Fixation
Publisher: Wiley
Date: 29-03-2021
0D carbon dots intercalated Z-scheme CuO/g-C3N4 heterojunction with dual charge transfer pathways for synergetic visible-light-driven photo-Fenton-like catalysis
Publisher: Elsevier BV
Date: 03-2023
Pyrolysis of palm kernel shell with internal recycling of heavy oil
Publisher: Elsevier BV
Date: 2019
DOI: 10.1016/J.BIORTECH.2018.10.006
Abstract: This paper investigated pyrolysis of palm kernel shell in a proposed reactor, which is characterized by internal recycling of heavy oil between a heavy oil sorption zone and pyrolysis zone. The internal recycling of heavy oil favors conversion of heavy oil to char, gas, and light oil. Compared with the product distribution from the conventional pyrolysis without heavy oil recycling, the yields of char, gas, and GC/MS detectable organic compounds increase from 34.8, 15.2, and 9.8 wt%-(dry feedstock) to 38.5, 19.0, and 16.9 wt%-(dry feedstock), respectively, with the help of internal recycling of heavy oil. The increases in the char and gas yields are interestingly found to be nearly equivalent. Furthermore, the yields of acetic acid and phenol in the resulting bio-oil can be as high as 10.1 and 2.7 wt%-(dry feedstock), and the outputs of 2-methylfuran, 2,6-dimethoxyphenol, and H
A review on photocatalysis for air treatment: From catalyst development to reactor design
Publisher: Elsevier BV
Date: 02-2017
Photoelectrochemical CO2 Reduction
Publisher: Wiley
Date: 29-03-2021
Graphitic Carbon Nitride Microtubes for Efficient Photocatalytic Overall Water Splitting: The Morphology Derived Electrical Field Enhancement
Publisher: American Chemical Society (ACS)
Date: 02-09-2020
Internal electric field in carbon nitride-based heterojunctions for photocatalysis
Publisher: Elsevier BV
Date: 04-2023
Enhanced CO2 Adsorption and Selectivity of CO2/N2 on Amino-MIL-53(Al) Synthesized by Polar Co-solvents
Publisher: American Chemical Society (ACS)
Date: 17-12-2018
One–pot synthesis of boron and nitrogen co–doped nanocarbons for efficient catalytic reduction of nitrophenols
Publisher: Elsevier BV
Date: 07-2022
Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials
Publisher: Frontiers Media SA
Date: 18-05-2021
DOI: 10.3389/FNANO.2021.688552
Abstract: Three-dimensional (3D) graphene-based macrostructures are being developed to combat the issues associated with two-dimensional (2D) graphene materials in practical applications. The 3D macrostructures (3DMs), for ex le, membranes, fibres, sponges, beads, and mats, can be formed by the self-assembly of 2D graphene-based precursors with exceptional surface area and unique chemistry. With rational design, the 3D macrostructures can then possess outstanding properties and exclusive structures. Thanks to various advantages, these macrostructures are competing in a variety of applications with promising performances unlike the traditional activated carbons, biochars and hydrochars, which have less flexibilities for modifications towards versatile applications. However, despite having such a wide range of applications, 3DMs remain applicable on laboratory scale due to the associated factors like cost and extensive research. This perspective provides an overview of available graphene-based macrostructures and their erse synthesis protocols. In the synthesis, hydrothermal route, chemical vapor deposition (CVD), wet spinning, 3D printing, vacuum filtration, spray drying and emulsion methods are highlighted. In addition, the physio-chemical properties of these macrostructures are discussed with the relationship among the porosity, surface area and the bulk density. The perspective also highlights the versatile potentials of different 3DMs in wastewater remediation by adsorption, desalination, and catalytic oxidation, etc. Following the concluding remarks, future outlooks on commercial applications of 3DMs are also provided.
COSMO-based solvent selection and Aspen Plus process simulation for tar absorptive removal
Publisher: Elsevier BV
Date: 10-2019
Resemblance in Corrosion Behavior of Selective Laser Melted and Traditional Monolithic β Ti-24Nb-4Zr-8Sn Alloy
Publisher: American Chemical Society (ACS)
Date: 19-12-2018
Photocatalysis of C, N-doped ZnO derived from ZIF-8 for dye degradation and water oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA20667K
Abstract: The C, N-doped ZnO derived from ZIF-8 via two-step pyrolysis showed excellent performances in photocatalytic dye degradation and oxygen evolution.
Photocatalysis coupling with membrane technology for sustainable and continuous purification of wastewater
Publisher: Elsevier BV
Date: 2024
Heterostructured WO3 @CoWO4 bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA00555A
Abstract: Novel WO 3 @CoWO 4 bilayer nanosheets exhibit largely enhanced water oxidation performances compared with WO 3 in electrocatalysis, visible-light photocatalysis and photoelectrochemistry.
Titanate supported cobalt catalysts for photochemical oxidation of phenol under visible light irradiations
Publisher: Elsevier BV
Date: 08-2011
Atomically dispersed Cu-N3 on hollow spherical carbon nitride for acetaminophen degradation: Generation of 1O2 from H2O2
Publisher: Elsevier BV
Date: 08-2023
Coupling hydrothermal and photothermal single-atom catalysis toward excellent water splitting to hydrogen
Publisher: Elsevier BV
Date: 04-2021
Engineered Graphitic Carbon Nitride-Based Photocatalysts for Visible-Light-Driven Water Splitting: A Review
Publisher: American Chemical Society (ACS)
Date: 05-04-2021
Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability
Publisher: Elsevier BV
Date: 2018
A comparative study of metal (Ni, Co, or Mn)-borate catalysts and their photodeposition on rGO/ZnO nanoarrays for photoelectrochemical water splitting
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA06921B
Abstract: The activity of Ni, Co, or Mn-based oxygen-evolving catalysts is screened and M-Bi/rGO/ZnO photoanodes are demonstrated for photoelectrochemical water splitting.
Combination of adsorption, photochemical and photocatalytic degradation of phenol solution over supported zinc oxide: Effects of support and sulphate oxidant
Publisher: Elsevier BV
Date: 05-2011
Location and size regulation of manganese oxides within mesoporous silica for enhanced antibiotic degradation
Publisher: Elsevier BV
Date: 08-2022
Zn phthalocyanine/carbon nitride heterojunction for visible light photoelectrocatalytic conversion of CO2 to methanol
Publisher: Elsevier BV
Date: 03-2019
Photothermal catalysis: From fundamentals to practical applications
Publisher: Elsevier BV
Date: 09-2023
A binder-free three-dimensional Ni foam supported hollow Co3O4/NiCo2O4 sensor for efficient monitoring of 4-chlorophenol
Publisher: Elsevier BV
Date: 06-2023
Graphitic Carbon Nitride Decorated with CoP Nanocrystals for Enhanced Photocatalytic and Photoelectrochemical H2 Evolution
Publisher: American Chemical Society (ACS)
Date: 11-2019
Tailored synthesis of active reduced graphene oxides from waste graphite: Structural defects and pollutant-dependent reactive radicals in aqueous organics decontamination
Publisher: Elsevier BV
Date: 08-2018
Quasi single cobalt sites in nanopores for superior catalytic oxidation of organic pollutants
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8EN01047A
Abstract: Quasi single cobalt sites are fabricated using the confined space, and show enhanced catalytic performances compared with aggregated Co 3 O 4 .
Aligning potential differences within carbon nitride based photocatalysis for efficient solar energy harvesting
Publisher: Elsevier BV
Date: 11-2021
Volatile–char interactions during biomass pyrolysis: Cleavage of C–C bond in a β–5 lignin model dimer by amino-modified graphitized carbon nanotube
Publisher: Elsevier BV
Date: 07-2020
Synthesis of porous reduced graphene oxide as metal-free carbon for adsorption and catalytic oxidation of organics in water
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA10592J
Ferric carbide nanocrystals encapsulated in nitrogen-doped carbon nanotubes as an outstanding environmental catalyst
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6EN00397D
Abstract: Iron carbide nanocrystals encapsulated by nitrogen-doped carbon nanotubes demonstrated efficient and robust environmental catalysis for green remediation processes.
Mechanism of nitrogen-concentration dependence on pH value: Experimental and theoretical studies on nitrogen-doped TiO2
Publisher: American Chemical Society (ACS)
Date: 06-08-2008
DOI: 10.1021/JP803519Q
Occurrence of radical and nonradical pathways from carbocatalysts for aqueous and nonaqueous catalytic oxidation
Publisher: Elsevier BV
Date: 07-2016
Preparation of cobalt/carbon-xerogel for heterogeneous oxidation of phenol
Publisher: Elsevier BV
Date: 06-2012
Sp2/sp3 Framework from Diamond Nanocrystals: A Key Bridge of Carbonaceous Structure to Carbocatalysis
Publisher: American Chemical Society (ACS)
Date: 12-07-2019
The roles of gold and silver nanoparticles on ZnIn2S4/silver (gold)/tetra(4-carboxyphenyl)porphyrin iron(III) chloride hybrids in carbon dioxide photoreduction
Publisher: Elsevier BV
Date: 12-2022
DOI: 10.1016/J.JCIS.2022.08.097
Abstract: The construction of hybrid catalysts composed of inorganic semiconductors and molecular catalysts shows great potential for achieving high photocatalytic carbon dioxide (CO
Melamine foam derived nitrogen and boron co-doped metal-free electrode for enhanced electro-Fenton degradation of metronidazole
Publisher: Elsevier BV
Date: 2023
Interfacial-engineered cobalt@carbon hybrids for synergistically boosted evolution of sulfate radicals toward green oxidation
Publisher: Elsevier BV
Date: 11-2019
Activation of peroxymonosulfate by carbonaceous oxygen groups: Experimental and density functional theory calculations
Publisher: Elsevier BV
Date: 12-2016
Integrated oxygen-doping and dye sensitization of graphitic carbon nitride for enhanced visible light photodegradation
Publisher: Elsevier BV
Date: 08-2016
DOI: 10.1016/J.JCIS.2016.05.026
Abstract: Graphitic carbon nitride (GCN) is a promising metal-free photocatalyst while suffering from low charge mobility induced inefficient photocatalysis. In this work, oxygen doping was employed to enhance the photodegradation of organic pollutants in water on graphitic carbon nitride (GCNO) under visible light. For further absorption extension, four organic dyes (Eosin-Y, Perylene, Nile-red and Coumarin) were adopted to dye-sensitize the GCNO photocatalyst. It was found that O-doping can promote dye sensitization, which was dependent on the type of dyes and influenced the photodegradation efficiencies of methylene blue (MB) and phenol. Nile-red sensitized GCNO presented the best activity in MB degradation under λ>480nm irradiations while Eosin-Y showed the best sensitization performance for phenol degradation under λ>420nm light source. However, dye sensitization was not effective for enhanced pollutant degradation on GCN without O-doping. UV-vis diffuse reflectance spectra (UV-vis DRS), photoluminescence (PL) spectra, and photocurrent analyses were applied to investigate the mechanism of carriers' transfer, which indicated that dye molecules could inject extra electrons into GCNO energy band and the energy dislocation could suppress electron/hole recombination, enhancing photocatalytic performances.
A comparative study of spinel structured Mn3O4, Co3O4 and Fe3O4 nanoparticles in catalytic oxidation of phenolic contaminants in aqueous solutions
Publisher: Elsevier BV
Date: 09-0010
DOI: 10.1016/J.JCIS.2013.06.061
Abstract: Spinel structured Mn3O4, Co3O4 and Fe3O4 nanoparticles were prepared, characterized, and tested in degradation of aqueous phenol in the presence of peroxymonosulfate. It was found that Mn3O4 and Co3O4 nanoparticles are highly effective in heterogeneous activation of peroxymonosulfate to produce sulfate radicals for phenol degradation. The activity shows an order of Mn3O4>Co3O4>Fe3O4. Mn3O4 could fast and completely remove phenol in about 20 min, at the conditions of 25 ppm phenol, 0.4 g/L catalyst, 2 g/L oxone®, and 25 °C. A pseudo first order model would fit to phenol degradation kinetics and activation energies on Mn3O4 and Co3O4 were obtained as 38.5 and 66.2 kJ/mol, respectively. In addition, Mn3O4 exhibited excellent catalytic stability in several runs, demonstrating that Mn3O4 is a promising catalyst alternative to toxic Co3O4 for water treatment.
Effect of the Proton Transfer Pathway on Selective Photoreforming of Lignin Models for Target Products Enabled by Sulfur Vacancy Engineering on Chalcogenide Nanosheets
Publisher: American Chemical Society (ACS)
Date: 23-05-2023
MIL-53(Fe) derived magnetic CuFe2O4/Fe2O3 composite for catalytic oxidation of sulfamethoxazole via peroxymonsulfate activation
Publisher: Elsevier BV
Date: 08-2023
Hydrogenolysis of lignin to phenolic monomers over Ru based catalysts with different metal-support interactions: Effect of partial hydrogenation of C(sp2)-O/C
Publisher: Elsevier BV
Date: 10-2021
Enhanced removals of micropollutants in binary organic systems by biomass derived porous carbon/peroxymonosulfate
Publisher: Elsevier BV
Date: 04-2021
Preparation of N-, O-, and S-Tri-Doped Biochar through One-Pot Pyrolysis of Poplar and Urea Formaldehyde and Its Enhanced Removal of Tetracycline from Wastewater
Publisher: MDPI AG
Date: 31-10-2022
DOI: 10.3390/EN15218081
Abstract: In this study, biochar was prepared via hybrid doping of N, O, and S by applying one-pot pyrolysis of poplar wood and S-containing urea formaldehyde at 900 °C. Different doping ratios were adopted, and the contents of O, N, and S were in the ranges of 2.78–5.56%, 2.16–4.92%, and 1.42–4.98%, respectively. This hybrid doping significantly enhanced the efficiency of the removal of tetracycline (40 mg/L) from wastewater to 71.84% in comparison with that attained by using normal poplar biochar (29.45%). The adsorption kinetics and isotherms indicated that the adsorption process was favorable and was dominated by chemisorption instead of physisorption the dominant adsorption process may be justified by the existence of abundant functional groups. The adsorption capacity was barely related to the surface area (R2 = 0.478), while it was closely related to the concentration of graphitic N (R2 = 0.985) because graphitic N enhanced the π–π interactions. The adsorption capacity was also highly related to the proportion of oxidized N and oxidized S owing to hydrogen bonding, which may have overlapped with the contribution of O-containing functional groups. This study presents a simple hybrid doping method for biochar modification and provides fundamental insights into the specific effects of O-, N- and S-containing functional groups on the performance of biochar for tetracycline removal.
Three-dimensional rGO/CNT/g-C3N4 macro discs as an efficient peroxymonosulfate activator for catalytic degradation of sulfamethoxazole
Publisher: Elsevier BV
Date: 10-2023
Different crystallographic one-dimensional MnO2 nanomaterials and their superior performance in catalytic phenol degradation
Publisher: American Chemical Society (ACS)
Date: 22-05-2013
DOI: 10.1021/ES400878C
Abstract: Three one-dimensional MnO2 nanoparticles with different crystallographic phases, α-, β-, and γ-MnO2, were synthesized, characterized, and tested in heterogeneous activation of Oxone for phenol degradation in aqueous solution. The α-, β-, and γ-MnO2 nanostructured materials presented in morphologies of nanowires, nanorods, and nanofibers, respectively. They showed varying activities in activation of Oxone to generate sulfate radicals for phenol degradation depending on surface area and crystalline structure. α-MnO2 nanowires exhibited the highest activity and could degrade phenol in 60 min at phenol concentrations ranging in 25-100 mg/L. It was found that phenol degradation on α-MnO2 followed first order kinetics with an activation energy of 21.9 kJ/mol. The operational parameters, such as MnO2 and Oxone loading, phenol concentration and temperature, were found to influence phenol degradation efficiency. It was also found that α-MnO2 exhibited high stability in recycled tests without losing activity, demonstrating itself to be a superior heterogeneous catalyst to the toxic Co3O4 and Co(2+).
Confined FeNi alloy nanoparticles in carbon nanotubes for photothermal oxidative dehydrogenation of ethane by carbon dioxide
Publisher: Elsevier BV
Date: 12-2023
Editorial: Environmental catalysis and the corresponding catalytic mechanism
Publisher: Frontiers Media SA
Date: 13-02-2019
An insight into metal organic framework derived N-doped graphene for the oxidative degradation of persistent contaminants: formation mechanism and generation of singlet oxygen from peroxymonosulfate
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6EN00633G
Abstract: Singlet oxygen produced during peroxymonosulfate activation by N-graphene dominated the pollutants degradation.
Flower-like MoS2 on graphitic carbon nitride for enhanced photocatalytic and electrochemical hydrogen evolutions
Publisher: Elsevier BV
Date: 12-2018
Photocatalytic degradation of 4-chlorophenol with combustion synthesized TiO2 under visible light irradiation
Publisher: Elsevier BV
Date: 04-2007
Facile synthesis of nitrogen-doped graphene via low-temperature pyrolysis: The effects of precursors and annealing ambience on metal-free catalytic oxidation
Publisher: Elsevier BV
Date: 05-2017
Photochemical degradation of phenol solutions on Co3O4 nanorods with sulfate radicals
Publisher: Elsevier BV
Date: 12-2015
Visible light responsive titania photocatalysts codoped by nitrogen and metal (Fe, Ni, Ag, or Pt) for remediation of aqueous pollutants
Publisher: Elsevier BV
Date: 09-2013
Improved deformation behavior in Ti-Zr-Fe-Mn alloys comprising the C14 type Laves and β phases
Publisher: Elsevier BV
Date: 12-2018
Surface controlled generation of reactive radicals from persulfate by carbocatalysis on nanodiamonds
Publisher: Elsevier BV
Date: 10-2016
N-doping-induced nonradical reaction on single-walled carbon nanotubes for catalytic phenol oxidation
Publisher: American Chemical Society (ACS)
Date: 22-12-2015
DOI: 10.1021/CS5017613
Photocatalytic oxidation of water and air contaminants with metal doped BiTaO 4 irradiated with visible light
Publisher: Elsevier BV
Date: 09-2012
Three-dimensional nitrogen-doped graphene oxide beads for catalytic degradation of aqueous pollutants
Publisher: Elsevier BV
Date: 10-2022
Controllable synthesis of a hollow Cr2O3 electrocatalyst for enhanced nitrogen reduction toward ammonia synthesis
Publisher: Elsevier BV
Date: 2022
A Review on N-Doped Biochar for Oxidative Degradation of Organic Contaminants in Wastewater by Persulfate Activation
Publisher: MDPI AG
Date: 10-11-2022
Abstract: The Persulfate-based advanced oxidation process is the most efficient and commonly used technology to remove organic contaminants in wastewater. Due to the large surface area, unique electronic properties, abundant N functional groups, cost-effectiveness, and environmental friendliness, N-doped biochars (NBCs) are widely used as catalysts for persulfate activation. This review focuses on the NBC for oxidative degradation of organics-contaminated wastewater. Firstly, the preparation and modification methods of NBCs were reviewed. Then the catalytic performance of NBCs and modified NBCs on the oxidation degradation of organic contaminants were discussed with an emphasis on the degradation mechanism. We further summarized the detection technologies of activation mechanisms and the structures of NBCs affecting the PS activation, followed by the specific role of the N configuration of the NBC on its catalytic capacity. Finally, several challenges in the treatment of organics-contaminated wastewater by a persulfate-based advanced oxidation process were put forward and the recommendations for future research were proposed for further understanding of the advanced oxidation process activated by the NBC.
Direct Z-scheme SiNWs@Co3O4 photocathode with a cocatalyst of sludge-derived carbon quantum dots for efficient photoelectrochemical hydrogen production
Publisher: Elsevier BV
Date: 11-2021
Synthesis of pentaerythritol stearate ester‐based zinc alkoxide and its synergistic effect with calcium stearate and zinc stearate on PVC thermal stability
Publisher: Wiley
Date: 15-09-2017
DOI: 10.1002/VNL.21602
Corrosion behavior and mechanism of laser powder bed fusion produced CoCrW in an acidic NaCl solution
Publisher: Elsevier BV
Date: 04-2023
N-Doped Graphene from Metal–Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism
Publisher: American Chemical Society (ACS)
Date: 20-02-2017
Volatile-char interactions during biomass pyrolysis: Contribution of amino group on graphitized carbon nanotube to xylose evolution based on experimental and theoretical studies
Publisher: Elsevier BV
Date: 12-2020
Carbocatalytic activation of persulfate for removal of antibiotics in water solutions
Publisher: Elsevier BV
Date: 03-2016
Carbon nitride-based Z-scheme heterojunctions for solar-driven advanced oxidation processes
Publisher: Elsevier BV
Date: 07-2022
DOI: 10.1016/J.JHAZMAT.2022.128866
Abstract: Solar-driven advanced oxidation processes (AOPs) via direct photodegradation or indirect photocatalytic activation of typical oxidants, such as hydrogen peroxide (H
Disordered Atomic Packing Structure of Metallic Glass: Toward Ultrafast Hydroxyl Radicals Production Rate and Strong Electron Transfer Ability in Catalytic Performance
Publisher: Wiley
Date: 02-08-2017
Synthesis of magnetic core/shell carbon nanosphere supported manganese catalysts for oxidation of organics in water by peroxymonosulfate
Publisher: Elsevier BV
Date: 11-2014
DOI: 10.1016/J.JCIS.2014.07.018
Abstract: Magnetic separation is more cost-effective than conventional separation processes in heterogeneous catalysis, especially for ultrafine nanoparticles. Magnetic core/shell nanospheres (MCS, Fe3O4/carbon) were synthesized by a hydrothermal method and their supported manganese oxide nanoparticles (Mn/MCS) were obtained by redox reactions between MCS and potassium permanganate at a low temperature. The materials were analyzed by a variety of characterization techniques such as powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectrometer (EDS), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and N2 adsorption/desorption. The Mn/MCS catalysts were able to effectively activate Oxone® for phenol degradation in aqueous solutions. Nitrogen treated MCS supported Mn achieved 100% conversion within 120min. Kinetic studies showed that phenol degradation over supported Mn catalysts follows the first order kinetics. It was also found that the catalysts can be easily separated from the aqueous solutions by an external magnetic field. The Oxone® activation mechanism by Mn/MCS catalysts was discussed and sulfate radicals were suggested to be the primary reactive species generated from peroxymonosulfate (PMS) for phenol catalytic oxidation.
Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent
Publisher: Elsevier BV
Date: 08-2012
DOI: 10.1016/J.JCIS.2012.04.030
Abstract: Amino-functionalized Fe(3)O(4)/SiO(2) core/shell nanoparticles were synthesized by reacting Fe(3)O(4) nanoparticles with tetraethyl orthosilicate and (3-aminopropyl) triethoxysilane to introduce amino groups on the surface. The amino groups on the Fe(3)O(4)/SiO(2) were reacted with the carboxylic groups of graphene oxide (GO) with the aid of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinnimide to form Fe(3)O(4)/SiO(2)GO nanoparticles. The structural, surface, and magnetic characteristics of the material were investigated by scanning and transmission electron microscopy, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Adsorption equilibrium and kinetics of methylene blue on the Fe(3)O(4)/SiO(2)GO were studied in a batch system. The maximum adsorption capacities were found to be 97.0, 102.6, and 111.1 mg g(-1) at 25, 45, and 60°C, respectively. A second-order kinetic equation could best describe the sorption kinetics. Thermodynamic parameters indicated that the adsorption of methylene blue onto the material was thermodynamically feasible and could occur spontaneously.
Corrosion behavior and mechanism of selective laser melted Ti35Nb alloy produced using pre-alloyed and mixed powder in Hank’s solution
Publisher: Elsevier BV
Date: 08-2021
Simulated biomass tar removal mechanism by a Quench Coupled with ADsorption Technology (QCADT)
Publisher: Elsevier BV
Date: 2020
Size dependence of uniformed carbon spheres in promoting graphitic carbon nitride toward enhanced photocatalysis
Publisher: Elsevier BV
Date: 05-2017
Corrosion and passivation behavior of laser powder bed fusion produced Ti-6Al-4V in static/dynamic NaCl solutions with different concentrations
Publisher: Elsevier BV
Date: 10-2021
Cascade applications of robust MIL-96 metal organic frameworks in environmental remediation: Proof of concept
Publisher: Elsevier BV
Date: 06-2018
Facile synthesis of hierarchically structured magnetic MnO2 /ZnFe2 O4 hybrid materials and their performance in heterogeneous activation of peroxymonosulfate
Publisher: American Chemical Society (ACS)
Date: 07-11-2014
DOI: 10.1021/AM505309B
Abstract: In heterogeneous catalysis for water treatment, feasible recovery of nanocatalysts is crucial to make the process cost-effective and environmentally benign. In this study, we applied two strategies, for ex le, magnetic separation and hierarchical structure of solid catalysts, to ensure manganese catalysts are readily separable, meanwhile their catalytic performance was retained by the nanosized structure of MnO2 nanosheets or nanorods. ZnFe2O4 was used as the magnetic core and MnO2 corolla-like sphere consisting of nanosheets, and sea-urchin shaped structure made of nanorods, were fabricated by a hydrothermal method at 100 and 140 °C, respectively. Crystalline structure, morphology and textural property of the materials were investigated. The prepared catalysts were able to effectively activate peroxymonosulfate (PMS) to generate sulfate radicals for catalytic oxidation of a typical organic pollutant of phenol. After the heterogeneous catalysis, the catalysts were easily recovered by applying an external magnetic field. The effects of temperature and repeated use on the degradation efficiencies were evaluated. The generation and evolution of sulfate radicals and phenol oxidation were studied using both competitive radical tests and electron paramagnetic resonance (EPR).
Carbon microspheres supported cobalt catalysts for phenol oxidation with peroxymonosulfate
Publisher: Elsevier BV
Date: 09-2015
Unzipping MWCNTs for controlled edge- and heteroatom-defects in revealing their roles in gas-phase oxidative dehydrogenation of ethanol to acetaldehyde
Publisher: Elsevier BV
Date: 10-2022
Confined Tri-Functional FeOx@MnO2@SiO2 Flask Micromotors for Long-Lasting Motion and Catalytic Reactions
Publisher: Wiley
Date: 26-01-2023
Abstract: H 2 O 2 ‐fueled micromotors are state‐of‐the‐art mobile microreactors in environmental remediation. In this work, a magnetic FeO x @MnO 2 @SiO 2 micromotor with multi‐functions is designed and demonstrated its catalytic performance in H 2 O 2 eroxymonosulfate (PMS) activation for simultaneously sustained motion and organic degradation. Moreover, this work reveals the correlations between catalytic efficiency and motion behavior/mechanism. The inner magnetic FeO x nanoellipsoids primarily trigger radical species ( • OH and O 2 •− ) to attack organics via Fenton‐like reactions. The coated MnO 2 layers on FeO x surface are responsible for decomposing H 2 O 2 into O 2 bubbles to provide a propelling torque in the solution and generating SO 4 •− and • OH for organic degradation. The outer SiO 2 microcapsules with a hollow head and tail result in an asymmetrical Janus structure for the motion, driven by O 2 bubbles ejecting from the inner cavity via the opening tail. Intriguingly, PMS adjusts the local environment to control over‐violent O 2 formation from H 2 O 2 decomposition by occupying the Mn sites via inter‐sphere interactions and enhances organic removal due to the strengthened contacts and Fenton‐like reactions between inner FeO x and peroxides within the microreactor. The findings will advance the design of functional micromotors and the knowledge of micromotor‐based remediation with controlled motion and high‐efficiency oxidation using multiple peroxides.
Novel two-dimensional crystalline carbon nitrides beyond g-C3N4: structure and applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0TA07437C
Abstract: Recent advances in the synthesis of 2D C x N y nanocrystals and their properties and applications are summarized future challenges and opportunities for 2D C x N y nanocrystals are also discussed.
An efficient and robust exfoliated bentonite/Ag3PO4/AgBr plasmonic photocatalyst for degradation of parabens
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0RA02455D
Abstract: A mesoporous exfoliated bentonite (EB)/Ag 3 PO 4 /AgBr (30%) photocatalyst was designed to combine various functions to achieve efficient photodegradation of parabens.
One-pot synthesis of binary metal organic frameworks (HKUST-1 and UiO-66) for enhanced adsorptive removal of water contaminants
Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.JCIS.2016.11.100
Abstract: In this study, binary metal organic frameworks (MOFs) with HKUST-1 and UiO-66 have been synthesized in a one-pot process. The synthesized MOFs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), N
Catalytic oxidation of organic pollutants in aqueous solution using sulfate radicals
Publisher: Royal Society of Chemistry
Date: 2015
Nano zero-valent iron-based fiber electrode for efficient electro-Fenton treatment of pharmaceutical wastewater: Mechanism of degradation and sterilization
Publisher: Elsevier BV
Date: 11-2023
3D-hierarchically structured MnO<inf>2</inf> for catalytic oxidation of phenol solutions by activation of peroxymonosulfate: Structure dependence and mechanism
Publisher: Elsevier BV
Date: 03-2015
Dual-metal zeolitic imidazolate frameworks and their derived nanoporous carbons for multiple environmental and electrochemical applications
Publisher: Elsevier BV
Date: 11-2018
Synergy of carbocatalytic and heat activation of persulfate for evolution of reactive radicals toward metal-free oxidation
Publisher: Elsevier BV
Date: 09-2020
Enhanced humidity sensing of functionalized reduced graphene oxide with 4-chloro-3-sulfophenylazo groups
Publisher: Elsevier BV
Date: 05-2019
Submicron sized water-stable metal organic framework (bio-MOF-11) for catalytic degradation of pharmaceuticals and personal care products
Publisher: Elsevier BV
Date: 04-2018
DOI: 10.1016/J.CHEMOSPHERE.2017.12.164
Abstract: Water-stable and active metal organic frameworks (MOFs) are important materials for mitigation of water contaminants via adsorption and catalytic reactions. In this study, a highly water-stable Co-based MOF, namely bio-MOF-11-Co, was synthesized by a simplified benign method. Moreover, it was used as a catalyst in successful activation of peroxymonsulfate for catalytic degradation of sulfachloropyradazine (SCP) and para-hydroxybenzoic acid (p-HBA) as representatives of pharmaceuticals and personal care products, respectively. The bio-MOF-11-Co showed rapid degradation of both p-HBA and SCP and could be reused multiple times without losing the activity by simply water washing. The effects of catalyst and PMS loadings as well as temperature were further studied, showing that high catalyst and PMS loadings as well as temperature produced faster kinetic degradation of p-HBA and SCP. The generation of highly reactive and HO radicals during the degradation was investigated by quenching tests and electron paramagnetic resonance. A plausible degradation mechanism was proposed based on the functionalities in the bio-MOF-11-Co. The availability of electron rich nucleobase adenine reinforced the reaction kinetics by electron donation along with cobalt atoms in the bio-MOF-11-Co structure.
Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction
Publisher: Elsevier BV
Date: 07-2018
A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol
Publisher: Elsevier BV
Date: 08-2015
Excellent performance of copper based metal organic framework in adsorptive removal of toxic sulfonamide antibiotics from wastewater
Publisher: Elsevier BV
Date: 09-2016
DOI: 10.1016/J.JCIS.2016.06.032
Abstract: The increasing concerns on toxicity of sulfonamide antibiotics in water require a prompt action to establish efficient wastewater treatment processes for their removal. In this study, adsorptive removal of a model sulfonamide antibiotic, sulfachloropyridazine (SCP), from wastewater is presented for the first time using a metal organic framework (MOF). A high surface area and thermally stable MOF, HKUST-1, was synthesized by a facile method. Batch adsorption studies were systematically carried out using HKUST-1. The high surface area and unsaturated metal sites resulted in a significant adsorption capacity with faster kinetics. Most of the SCP was removed in 15min and the kinetic data were best fitted with the pseudo second order model. Moreover, isothermal data were best fitted with the Langmuir model. The thermodynamic results showed that the adsorption is a spontaneous and endothermic process. The adsorption capacity of HKUST-1 is 384mg/g at 298K which is the highest compared to most of the materials for the antibiotics. The high adsorption capacity is attributed mainly to π-π stacking, hydrogen bonding and electrostatic interactions.
Heteroatom (N or N-S)-Doping Induced Layered and Honeycomb Microstructures of Porous Carbons for CO2 Capture and Energy Applications
Publisher: Wiley
Date: 28-10-2016
Spontaneous Formation of Noble- and Heavy-Metal-Free Alloyed Semiconductor Quantum Rods for Efficient Photocatalysis
Publisher: Wiley
Date: 30-07-2018
Abstract: Quasi-1D cadmium chalcogenide quantum rods (QRs) are benchmark semiconductor materials that are combined with noble metals to constitute QR heterostructures for efficient photocatalysis. However, the high toxicity of cadmium and cost of noble metals are the main obstacles to their widespread use. Herein, a facile colloidal synthetic approach is reported that leads to the spontaneous formation of cadmium-free alloyed ZnS
Adsorption of cerium (III) by HKUST-1 metal-organic framework from aqueous solution
Publisher: Elsevier BV
Date: 04-2019
DOI: 10.1016/J.JCIS.2019.01.117
Abstract: Cerium is an important rare earth element (REE), which can be used for many high-tech applications. From the industrial and environmental viewpoints, it is imperative to recover Ce
Effect of preparation conditions on visible photocatalytic activity of titania synthesized by solution combustion method
Publisher: Elsevier BV
Date: 03-2007
Effects of -NO 2 and -NH 2 functional groups in mixed-linker Zr-based MOFs on gas adsorption of CO 2 and CH 4
Publisher: Elsevier BV
Date: 04-2018
Surface engineering of hollow carbon nitride microspheres for efficient photoredox catalysis
Publisher: Elsevier BV
Date: 02-2020
Promoted Production of Phenolic Monomers from Lignin-First Depolymerization of Lignocellulose over Ru Supported on Biochar by N,P-co-Doping
Publisher: American Chemical Society (ACS)
Date: 07-02-2022
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