ORCID Profile
0000-0001-6378-3274
Current Organisation
Curtin University
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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 | Chemical Engineering not elsewhere classified | Catalytic Process Engineering | Chemical Engineering Design | Powder and Particle Technology | Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels) | Process Control And Simulation | Fluidisation and Fluid Mechanics | Process Control and Simulation | Membrane and Separation Technologies | Functional Materials | Interdisciplinary Engineering | Organic Chemical Synthesis | Resources Engineering Not Elsewhere Classified | Fluidization And Fluid Mechanics | Education Assessment and Evaluation | Carbon capture engineering (excl. sequestration) | Chemical and thermal processes in energy and combustion | Software Engineering | Mineral Processing/Beneficiation | Nanotechnology | Mineral Processing | Petroleum and Reservoir Engineering | Analytical Chemistry | Simulation And Modelling | Organic Chemistry | Engineering And Technology Not Elsewhere Classified | Flow Analysis | Chemical Engineering Not Elsewhere Classified | Industrial Chemistry | Nanomaterials | Curriculum and Pedagogy | Chemical engineering | Chemical Engineering Design | Interdisciplinary Engineering Not Elsewhere Classified | Heat and Mass Transfer Operations | Materials Engineering Not Elsewhere Classified | Science, Technology and Engineering Curriculum and Pedagogy | Bioprocessing bioproduction and bioproducts | Water Treatment Processes | Environmental Nanotechnology |
ANZSRC Socio-Economic Objective (SEO)
Solid Oxide Fuel Cells | Expanding Knowledge in Engineering | Ceramics | Energy Conservation and Efficiency not elsewhere classified | Inorganic Industrial Chemicals | Oil and Gas Extraction | Energy transformation | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Oil and Gas Refining | Energy not elsewhere classified | Application packages | Industrial Gases | Chemical sciences | Mathematical sciences | Alumina production | Education and Training not elsewhere classified | Beneficiation or dressing of non-metallic minerals (incl. diamonds) | Physical and Chemical Conditions of Water for Urban and Industrial Use | Environmentally Sustainable Energy Activities not elsewhere classified | Manufactured products not elsewhere classified | Energy Storage, Distribution and Supply not elsewhere classified | Inorganic industrial chemicals | Teaching and Instruction not elsewhere classified | Organic industrial chemicals not classified elsewhere | Gender Aspects of Education | Energy Transformation not elsewhere classified | Energy storage | Refined oil and gas | Gas—conversion to liquid fuels | Renewable energy | Gas distribution | Oil and gas | Expanding Knowledge in Technology | Biofuel (Biomass) Energy | Industrial chemicals and related products | Hydrogen Production from Fossil Fuels | Energy minerals not elsewhere classified | Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in the Physical Sciences | Beneficiation or Dressing of Iron Ores | Beneficiation or Dressing of Non-Metallic Minerals (incl. Diamonds) | Other
Related Links
Publications
Synthesis of nitrogen-doped mesoporous carbon spheres with extra-largepores through assembly of diblock copolymer micelles
Publisher: Wiley
Date: 12-11-2015
Abstract: The synthesis of highly nitrogen-doped mesoporous carbon spheres (NMCS) is reported. The large pores of the NMCS were obtained through self-polymerization of dopamine (DA) and spontaneous co-assembly of diblock copolymer micelles. The resultant narrowly dispersed NMCS possess large mesopores (ca. 16 nm) and small particle sizes (ca. 200 nm). The large pores and small dimensions of the N-heteroatom-doped carbon spheres contribute to the mass transportation by reducing and smoothing the diffusion pathways, leading to high electrocatalytic activity.
Free-standing nitrogen doped V-O-C nanofiber film as promising electrode for flexible lithium-ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA07447E
Abstract: Highly flexible vanadium and nitrogen co-doped carbon films were synthesized by electrospinning, delivering an outstanding discharge capacitance of 1380 mA h g −1 at 0.1 A g −1 . The Coulombic efficiency was as high as 63.3% and a capacity retention ratio of 80% was obtained after cycling at 6.4 A g −1 for 500 times.
Facile conversion of commercial coarse-type LiCoO2 to nanocomposite-separated nanolayer architectures as a way for electrode performance enhancement
Publisher: American Chemical Society (ACS)
Date: 16-01-2015
DOI: 10.1021/AM507421Y
Abstract: Coarse-type LiCoO2 is the state-of-the-art cathode material in small-scale lithium-ion batteries (LIBs) however, poor rate performance and cycling stability limit its large-scale applications. Here we report the modification of coarse-type LiCoO2 (LCO) with nanosized lithium lanthanum titanate (Li3xLa2/3-xTiO3, LLTO) through a facile sol-gel process, the electrochemical performance of commercial LiCoO2 is improved effectively, in particular at high rates. The crystalline structure of pristine LiCoO2 is not affected by the introduction of the LLTO phase, while nanosized LLTO particles are likely incorporated into the space of the LiCoO2 layers to form a LCO-LLTO nanocomposite, which separate the LCO layers with the increase of layer spacing to ∼100 nm. The LLTO incorporation through the facile post-treatment effectively reduces the charge-transfer resistance and increases the electrode reactions consequently, the LLTO-incorporated LCO electrode shows higher capacity than LiCoO2 at a higher rate and prolonging cycling stability in both potential ranges of 2.7-4.2 V and 2.7-4.5 V, making it also suitable for high-rate operation. This novel concept is general, which may also be applicable to other electrode materials. It thus introduces a new way for the development of high rate-performance electrodes for LIBs for large scale applications such as electric vehicles and electrochemical energy storage for smart grids.
Simulation and Analysis of Carbon-in-Leach (CIL) Circuits
Publisher: Elsevier
Date: 2012
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
Effect of closure models on Eulerian-Eulerian gas-solid flow predictions in riser
Publisher: Elsevier BV
Date: 2014
Highly Defective Layered Double Perovskite Oxide for Efficient Energy Storage via Reversible Pseudocapacitive Oxygen-Anion Intercalation
Publisher: Wiley
Date: 02-01-2018
Advanced symmetric solid oxide fuel cell with an infiltrated K 2NiF4-Type La2NiO4 electrode
Publisher: American Chemical Society (ACS)
Date: 18-10-2014
DOI: 10.1021/EF401473W
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.
Advances in Cathode Materials for Solid Oxide Fuel Cells: Complex Oxides without Alkaline Earth Metal Elements
Publisher: Wiley
Date: 29-06-2015
Promoting Bifunctional Oxygen Catalyst Activity of Double-Perovskite-Type Cubic Nanocrystallites for Aqueous and Quasi-Solid-State Rechargeable Zinc-Air Batteries
Publisher: MDPI AG
Date: 29-09-2023
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
Systematic study of aqueous monoethanolamine-based CO2 capture process: Model development and process improvement
Publisher: Wiley
Date: 19-11-2016
DOI: 10.1002/ESE3.101
Effect of inlet boundary conditions on computational fluid dynamics (CFD) simulations of gas-solid flows in risers
Publisher: American Chemical Society (ACS)
Date: 30-09-2012
DOI: 10.1021/IE200940F
Active Centers of Catalysts for Higher Alcohol Synthesis from Syngas: A Review
Publisher: American Chemical Society (ACS)
Date: 13-06-2018
BaCo0.6 Fe0.3 Sn0.1 O3-δ perovskite as a new superior oxygen reduction electrode for intermediate-to-low temperature solid oxide fuel cells
Publisher: Royal Society of Chemistry (RSC)
Date: 16-07-2014
DOI: 10.1039/C4TA02869D
Gold nanostars: Benzyldimethylammonium chloride-assisted synthesis, plasmon tuning, SERS and catalytic activity
Publisher: Elsevier BV
Date: 2016
DOI: 10.1016/J.JCIS.2015.10.007
Abstract: Fabrication of Au nanostars (AuNSs) can expand the application range of Au nanoparticles because of their high electron density and localized surface plasmon resonance (LSPR) on branches. Exploiting this potential requires further refinement of length of the branches and radius of their tips. To this end, we successfully synthesized AuNSs with uniform and sharply-pointed branches by combining benzyldimethylammonium chloride (BDAC) and cetyltrimethylammonium bromide (CTAB) at low BDAC/CTAB ratios. Once mixed with CTAB, BDAC lowers the critical micelle concentration (CMC) for quick formation of the micelles, which provides favorable growth templates for AuNSs formation. Besides, BDAC increases the concentration of Cl(-), which favors Ag(+) in adsorbing on Au facets. This feature is crucial for the yield boosting and synergic shape control of AuNSs regardless of types of Au seeds used. Use of less amounts of seeds as the center of nucleation benefited sharper and longer growth of the branches. AuNSs exhibited excellent enhancement of surface-enhanced Raman scattering (SERS) intensities as the result of high electron density localized at the tips however, the enhancement degree varied in accordance with the size of branches. In addition, AuNSs showed high catalytic performance toward the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). Efficient catalysis over AuNSs originates from their corners, stepped surfaces and high electron density at the tips.
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.
Particle deposition in natural gas pipelines using computational fluid dynamics modelling
Publisher: Wiley
Date: 27-12-2012
DOI: 10.1002/APJ.648
Effect of a cluster on gas-solid drag from lattice Boltzmann simulations
Publisher: Elsevier BV
Date: 10-2013
Modified Photobioreactor for Biofixation of Carbon Dioxide by Chlorella vulgaris at Different Light Intensities
Publisher: Wiley
Date: 14-07-2015
Cobalt-free Ba<inf>0.5</inf>Sr<inf>0.5</inf>Fe<inf>0.8</inf>Cu<inf>0.1</inf>Ti<inf>0.1</inf>O<inf>3-δ</inf> as a bi-functional electrode material for solid oxide fuel cells
Publisher: Elsevier BV
Date: 12-2015
CFD simulation of solid–liquid stirred tanks for low to dense solid loading systems
Publisher: Elsevier BV
Date: 12-2016
Synthesis of CaCO3 @C yolk-shell particles for CO2 adsorption
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA02427G
Abstract: This paper reports the first ex le of the synthesis of CaCO 3 @C yolk–shell particles and their application in CO 2 adsorption.
Boosting oxygen reduction reaction activity of palladium by stabilizing its unusual oxidation states in perovskite
Publisher: American Chemical Society (ACS)
Date: 14-04-2015
Improved separation and antifouling performance of PVA thin film nanocomposite membranes incorporated with carboxylated TiO2 nanoparticles
Publisher: Elsevier BV
Date: 07-2015
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
Structure, sinterability, chemical stability and conductivity of proton-conducting BaZr0.6 M0.2 Y0.2 O3-δ electrolyte membranes: The effect of the M dopant
Publisher: Elsevier BV
Date: 10-2014
Freeze-dried macroporous foam prepared from chitosan/xanthan gum/montmorillonite nanocomposites
Publisher: Elsevier BV
Date: 11-2011
Synthesis of pyramidal, cubical and truncated octahedral magnetite nanocrystals by controlling reaction heating rate
Publisher: Elsevier BV
Date: 07-2011
Modeling and optimization of Carbon in leach (CIL) circuit for gold recovery
Publisher: Elsevier BV
Date: 11-2015
Glycerol/starch/Na+-montmorillonite nanocomposites: A XRD, FTIR, DSC and 1H NMR study
Publisher: Elsevier BV
Date: 02-2011
Perovskite materials in energy storage and conversion
Publisher: Wiley
Date: 05-2016
DOI: 10.1002/APJ.2000
Monodisperse Co3 O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation
Publisher: Elsevier BV
Date: 04-2018
A modified Kennard-Stone algorithm for optimal division of data for developing artificial neural network models
Publisher: Walter de Gruyter GmbH
Date: 31-07-2012
Abstract: This paper proposes a method, namely MDKS (Kennard-Stone algorithm based on Mahalanobis distance), to ide the data into training and testing subsets for developing artificial neural network (ANN) models. This method is a modified version of the Kennard-Stone (KS) algorithm. With this method, better data splitting, in terms of data representation and enhanced performance of developed ANN models, can be achieved. Compared with standard KS algorithm and another improved KS algorithm (data ision based on joint x - y distances (SPXY) method), the proposed method has also shown a better performance. Therefore, the proposed technique can be used as an advantageous alternative to other existing methods of data splitting for developing ANN models. Care should be taken when dealing with large amount of dataset since they may increase the computational load for MDKS due to its variance-covariance matrix calculations.
Tin-doped perovskite mixed conducting membrane for efficient air separation
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA00926F
Abstract: The substitution of B-site cations in BaCo 0.7 Fe 0.3 O 3−δ with tin is effective in improving oxygen permeability and stability of the membrane.
Cobalt-free niobium-doped barium ferrite as potential materials of dense ceramic membranes for oxygen separation
Publisher: Elsevier BV
Date: 04-2014
Construction of p-n heterojunction Β-Bi2 O3 /BiVO4 nanocomposite with improved photoinduced charge transfer property and enhanced activity in degradation of ortho-dichlorobenzene
Publisher: Elsevier BV
Date: 12-2017
Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study
Publisher: Elsevier BV
Date: 02-2010
Modelling and experimental study of SO2 removal and NH3 recycling in an ammonia based CO2 capture process
Publisher: Elsevier BV
Date: 2014
Can water float on oil?
Publisher: American Chemical Society (ACS)
Date: 28-02-2012
DOI: 10.1021/LA204820A
Abstract: The floatability of water on oil surface was studied. A numerical model was developed from the Young-Laplace equation on three interfaces (water/oil, water/air, and oil/air) to predict the theoretical equilibration conditions. The model was verified successfully with an oil/water system. The stability of the floating droplet depends on the combination of three interface tensions, oil density, and water droplet volume. For practical purposes, however, the equilibrium contact angle has to be greater than 5° so the water droplet can effectively float. This result has significant applications for biodegrading oil wastes.
Statistical method-based calibration and validation of a solid oxide fuel cell model
Publisher: Hindawi Limited
Date: 23-01-2018
DOI: 10.1002/ER.3974
Dynamic tank in series modeling of direct internal reforming SOFC
Publisher: Hindawi Limited
Date: 06-03-2017
DOI: 10.1002/ER.3733
Adsorption and heterogeneous advanced oxidation of phenolic contaminants using Fe loaded mesoporous SBA-15 and H2 O2
Publisher: Elsevier BV
Date: 15-10-2010
UV-assisted construction of 3D hierarchical rGO/Bi2 MoO6 composites for enhanced photocatalytic water oxidation
Publisher: Elsevier BV
Date: 04-2017
Polydopamine-assisted decoration of TiO 2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform
Publisher: Elsevier BV
Date: 02-2018
Photocatalytic degradation of gaseous toluene with multiphase Ti x Zr 1− x O 2 synthesized via co-precipitation route
Publisher: Elsevier BV
Date: 2015
DOI: 10.1016/J.JCIS.2014.09.061
Abstract: In the present work, the multiphase Ti(x)Zr(1-x)O2 particles containing cubic-phase ZrO2 were fabricated via co-precipitation route. The mole ratios of Ti and Zr elements were controlled by three levels: Ti/Zr=7/3 (maximum), Ti/Zr=5/5 (medium), and Ti/Zr=3/7 (minimum). The materials prepared were characterized by using X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), energy-dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectra (DRS) and photoluminescence (PL) spectra. For the maximum usage of solar power with fabricated catalysts, elimination of gaseous toluene was chosen as a model to evaluate the performances under visible light. The results indicated that the degradation efficiency of toluene was about 80% after 6 h reaction using Ti(0.3)Zr(0.7)O2 as the photocatalyst. On the other hand, the multiphase Ti(x)Zr(1-x)O2 (x=0.7 or 0.5) photocatalysts showed significant enhancement in the activity, compared with the commercial TiO2 (Degussa P25). The enhanced performances of Ti(x)Zr(1-x)O2 might be attributed to the lower charge recombination rate of photoinduced electron-hole pairs. In addition, some intermediates (the benzaldehyde and benzoic acid) and final product (CO2) adsorbed on the surface of the particles were also detected by using in situ Fourier transform infrared (FTIR) spectroscopy.
Morphological investigation into starch bio-nanocomposites via synchrotron radiation and differential scanning calorimetry
Publisher: Hindawi Limited
Date: 2011
DOI: 10.1155/2011/924582
Abstract: We studied a hydrophilic, plasticized bionanocomposite system involving sorbitol plasticizer, amylose biopolymer, and montmorillonite (MMT) for the presence of competitive interactions among them at different moisture content. Synchrotron analysis via small angle X-ray scattering (SAXS) and thermal analysis using differential scanning calorimetry (DSC) were performed to understand crystalline growth and the distribution of crystalline domains within the s les. The SAXS diffraction patterns showed reduced interhelix spacing in the amylose network indicating strong amylose-sorbitol interactions. Depending on the sorbitol and MMT concentration, these interactions also affected the free moisture content and crystalline domains. Domains of around 95 Å and 312 Å were found in the low-moisture-content s les as compared to a single domain of 95 Å in the high-moisture-content s les. DSC measurements confirmed that the MMT increased the onset and the melting temperature of nanocomposites. Moreover, the results showed that the ternary interactions among sorbitol-amylose-MMT supported the crystalline heterogeneity through secondary nucleation.
Impregnated LaCo0.3 Fe0.67 Pd0.03 O3-δ as a promising electrocatalyst for symmetrical intermediate-temperature solid oxide fuel cells
Publisher: Elsevier BV
Date: 02-2016
Significant performance enhancement of yttrium-doped barium cerate proton conductor as electrolyte for solid oxide fuel cells through a Pd ingress-egress approach
Publisher: Elsevier BV
Date: 07-2014
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
Manganese oxides at different oxidation states for heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions
Publisher: Elsevier BV
Date: 10-2013
Shape-controlled activation of peroxymonosulfate by single crystal α-Mn2 O3 for catalytic phenol degradation in aqueous solution
Publisher: Elsevier BV
Date: 07-2014
Design of Perovskite Oxides as Anion-Intercalation-Type Electrodes for Supercapacitors: Cation Leaching Effect
Publisher: American Chemical Society (ACS)
Date: 02-09-2016
Abstract: Oxygen ions can be exploited as a charge carrier to effectively realize a new type of anion-intercalation supercapacitor. In this study, to get some useful guidelines for future materials development, we comparatively studied SrCoO3-δ (SC), Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF), and Co3O4 as electrodes in supercapacitors with aqueous alkaline electrolyte. The effect of interaction between the electrode materials with the alkaline solution was focused on the structure and specific surface area of the electrode material, and ultimately the electrochemical performance was emphasized. Both BSCF and SC were found to experience cation leaching in alkaline solution, resulting in an increase in the specific surface area of the material, but overleaching caused the damage of perovskite structure of BSCF. Barium leaching was more serious than strontium, and the cation leaching was component dependent. Although high initial capacitance was achieved for BSCF, it was not a good candidate as intercalation-type electrode for supercapacitor because of poor cycling stability from serious Ba(2+) and Sr(2+) leaching. Instead, SC was a favorable electrode candidate for practical use in supercapacitors due to its high capacity and proper cation leaching capacity, which brought beneficial effect on cycling stability. It is suggested that cation leaching effect should be seriously considered in the development of new perovskite materials as electrodes for supercapacitors.
Improved activity of W-modified MnOx -TiO2 catalysts for the selective catalytic reduction of NO with NH3
Publisher: Elsevier BV
Date: 03-2016
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
Hydrodynamics of macroscopic particles in slurry suspensions
Publisher: Wiley
Date: 16-02-2016
DOI: 10.1002/APJ.1975
In situ electrochemical creation of cobalt oxide nanosheets with favorable performance as a high tap density anode material for lithium-ion batteries
Publisher: Elsevier BV
Date: 10-2015
SrCo<inf>0.9</inf>Ti<inf>0.1</inf>O<inf>3-δ</inf> As a New Electrocatalyst for the Oxygen Evolution Reaction in Alkaline Electrolyte with Stable Performance
Publisher: American Chemical Society (ACS)
Date: 07-08-2015
Abstract: The development of efficient, inexpensive, and stable electrocatalysts for the oxygen evolution reaction (OER) is critical for many electrochemical energy conversion technologies. The prohibitive price and insufficient stability of the state-of-the-art IrO2 electrocatalyst for the OER inhibits its use in practical devices. Here, SrM0.9Ti0.1O3-δ (M = Co, Fe) perovskites with different B-site transition metal elements were investigated as potentially cheaper OER electrocatalysts. They were prepared through a typical sol-gel route, and their catalytic activities for the OER in alkaline medium were comparatively studied using rotating disk electrodes. Both materials show high initial intrinsic activities in alkaline electrolyte for the OER, comparable to the benchmark perovskite-type electrocatalyst Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF), but SrCo0.9Ti0.1O3-δ (SCT) possessed more operational stability than SrFe0.9Ti0.1O3-δ (SFT), even better than BSCF and IrO2 catalysts. Based on the X-ray photoelectron spectra analysis of the oxidation states of the surface Co/Fe in both SFT and SCT before and after the OER tests, an explanation for their different operational stabilities was proposed by adopting a reported activity descriptor correlated to the eg occupancy of the 3d electron of the surface transition metal cations in the perovskite oxides. The above results indicate that SCT is a promising alternative electrocatalyst for the OER and can be used in electrochemical devices for water oxidation.
Nickel-based anode with water storage capability to mitigate carbon deposition for direct ethanol solid oxide fuel cells
Publisher: Wiley
Date: 05-05-2014
Abstract: The potential to use ethanol as a fuel places solid oxide fuel cells (SOFCs) as a sustainable technology for clean energy delivery because of the renewable features of ethanol versus hydrogen. In this work, we developed a new class of anode catalyst exemplified by Ni+BaZr0.4Ce0.4Y0.2O3 (Ni+BZCY) with a water storage capability to overcome the persistent problem of carbon deposition. Ni+BZCY performed very well in catalytic efficiency, water storage capability and coking resistance tests. A stable and high power output was well maintained with a peak power density of 750 mW cm(-2) at 750 °C. The SOFC with the new robust anode performed for seven days without any sign of performance decay, whereas SOFCs with conventional anodes failed in less than 2 h because of significant carbon deposition. Our findings indicate the potential applications of these water storage cermets as catalysts in hydrocarbon reforming and as anodes for SOFCs that operate directly on hydrocarbons.
Green fabrication of composite cathode with attractive performance for solid oxide fuel cells through facile inkjet printing
Publisher: Elsevier BV
Date: 2015
Erratum: Can water float on oil? (Langmuir)
Publisher: American Chemical Society (ACS)
Date: 19-04-2012
DOI: 10.1021/LA3014865
Aluminum oxide as a dual-functional modifier of Ni-based anodes of solid oxide fuel cells for operation on simulated biogas
Publisher: Elsevier BV
Date: 12-2014
Process modeling of an advanced NH3 abatement and recycling technology in the ammonia-based CO2 capture process
Publisher: American Chemical Society (ACS)
Date: 29-05-2014
DOI: 10.1021/ES501175X
Abstract: An advanced NH3 abatement and recycling process that makes great use of the waste heat in flue gas was proposed to solve the problems of ammonia slip, NH3 makeup, and flue gas cooling in the ammonia-based CO2 capture process. The rigorous rate-based model, RateFrac in Aspen Plus, was thermodynamically and kinetically validated by experimental data from open literature and CSIRO pilot trials at Munmorah Power Station, Australia, respectively. After a thorough sensitivity analysis and process improvement, the NH3 recycling efficiency reached as high as 99.87%, and the NH3 exhaust concentration was only 15.4 ppmv. Most importantly, the energy consumption of the NH3 abatement and recycling system was only 59.34 kJ/kg CO2 of electricity. The evaluation of mass balance and temperature steady shows that this NH3 recovery process was technically effective and feasible. This process therefore is a promising prospect toward industrial application.
Simulation of gas-solid flows in riser using energy minimization multiscale model: Effect of cluster diameter correlation
Publisher: Elsevier BV
Date: 07-2011
Single-chamber solid oxide fuel cells with nanocatalyst-modified anodes capable of in situ activation
Publisher: Elsevier BV
Date: 10-2014
Gas-solid flow hydrodynamics of an industrial scale catalyst lift engager
Publisher: Elsevier BV
Date: 05-2010
Catalytic oxidation of organic pollutants on pristine and surface nitrogen-modified carbon nanotubes with sulfate radicals
Publisher: Elsevier BV
Date: 07-2014
2D porous graphitic C3 N4 nanosheets/Ag3 PO4 nanocomposites for enhanced visible-light photocatalytic degradation of 4-chlorophenol
Publisher: Springer Science and Business Media LLC
Date: 08-07-2014
Numerical study of fog formation around ambient air vaporizers
Publisher: Elsevier BV
Date: 06-2018
Metal-free activation of persulfate by cubic mesoporous carbons for catalytic oxidation via radical and nonradical processes
Publisher: Elsevier BV
Date: 06-2018
Ta/TiO 2 -and Nb/TiO 2 -mixed oxides as efficient solar photocatalysts: Preparation, characterization, and photocatalytic activity
Publisher: Hindawi Limited
Date: 2012
DOI: 10.1155/2012/548158
Abstract: Ta/TiO 2 - and Nb/TiO 2 -mixed oxides photocatalysts were prepared by simple impregnation method at different TiO 2 : Nb or Ta mass ratios of 1 : 0.1, 1 : 0.5, and 1 : 1, followed by calcination at 500 ∘ C. The prepared powders have been characterized by XRD, XPS, UV-Vis spectra, and SEM. The photocatalytic activity was evaluated under natural solar light for decolorization and mineralization of azo dye Orange II solution. The results showed that Nb/TiO 2 - and Ta/TiO 2 -mixed oxides have higher activity than the untreated TiO 2 under natural solar light. The maximum activity was observed for Nb/TiO 2 s le (at mass ratio of 1 : 0.1), which is characterized by the smallest crystalline size (17.79 nm). Comparing with the untreated TiO 2 , the solar decolorization and mineralization rates improved by about 140% and 237%, respectively, and the band gap reduced to 2.80 eV. The results suggest that the crystal lattices of TiO 2 powder are locally distorted by incorporating Nb 5+ species into TiO 2 , forming a new band energy structure, which is responsible for the absorption in the visible region. Unlike Ta/TiO 2 , the Nb/TiO 2 -mixed oxides can prevent the grain size growth of the treated TiO 2 , which is important to achieve high solar photoactivity.
Modelling of the interaction between a falling n-heptane droplet and hot solid surface
Publisher: Elsevier BV
Date: 09-2014
Sustainability assessment of symbiotic processes for the reuse of phosphogypsum
Publisher: Elsevier BV
Date: 07-2018
Novel PCA-based technique for identification of dominant variables for partial control
Publisher: Walter de Gruyter GmbH
Date: 16-02-2010
Abstract: The control structure problem which has been considered the central issue in modern process control has attracted large research attentions in the last three decades. There are various methods which have been developed but only a handful of them can really provide a practical solution to such an open-ended problem. The concept of partial control structure which has long been adopted in process industries has to a certain extent provided the engineers with sound theoretical foundation upon which this issue can be tackled in a systematic way. One major limitation of partial control preventing its effective adoption to solving this problem is due to its heavy reliance on engineering experiences and process knowledge in finding the dominant variables. In this paper, we propose a novel PCA-based technique to identify the dominant variables, which avoids the need for extensive experience and process knowledge. Various criteria and conditions forming the backbone of the technique are also proposed. The effectiveness of the technique is demonstrated based on its application to the continuous extractive alcoholic fermentation system.
Red mud and fly ash supported Co catalysts for phenol oxidation
Publisher: Elsevier BV
Date: 09-2012
Modelling the triple phase boundary length in infiltrated SOFC electrodes
Publisher: Elsevier BV
Date: 11-2017
A freestanding composite film electrode stacked from hierarchical electrospun SnO2 nanorods and graphene sheets for reversible lithium storage
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA47840H
Abstract: A freestanding hierarchical SnO 2 nanorods/graphene composite film electrode fabricated using electrospinning and film casting methods, exhibited enhanced cycling performance.
Molecular Design of Mesoporous NiCo2 O4 and NiCo2 S4 with Sub-Micrometer-Polyhedron Architectures for Efficient Pseudocapacitive Energy Storage
Publisher: Wiley
Date: 16-05-2017
BaNb0.05 Fe0.95 O3-δ as a new oxygen reduction electrocatalyst for intermediate temperature solid oxide fuel cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA11447C
Facile synthesis and characterization of ZnFe2 O 4 /α-Fe2 O3 composite hollow nanospheres
Publisher: Elsevier BV
Date: 12-2011
Hydrodynamic study of fluid catalytic cracker unit stripper
Publisher: American Chemical Society (ACS)
Date: 18-03-2013
DOI: 10.1021/IE300828N
Enzyme encapsulation in freeze-dried bionanocomposites prepared from chitosan and xanthan gum blend
Publisher: Elsevier BV
Date: 09-2011
CFD model of a methane fuelled single cell SOFC stack for analysing the combined effects of macro/micro structural parameters
Publisher: Elsevier BV
Date: 07-2013
Effect of the operating strategy of a solid oxide fuel cell on the effectiveness of decentralized linear controllers
Publisher: American Chemical Society (ACS)
Date: 12-2011
DOI: 10.1021/IE100894M
The influence of impurity ions on the permeation and oxygen reduction properties of Ba0.5 Sr0.5 Co0.8 Fe0.2 O3-δ perovskite
Publisher: Elsevier BV
Date: 2014
Construction of Mn<inf>0.5</inf>Zn<inf>0.5</inf>Fe<inf>2</inf>O<inf>4</inf> modified TiO<inf>2</inf> nanotube array nanocomposite electrodes and their photoelectrocatalytic performance in the degradation of 2,4-DCP
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TC01008J
Abstract: Mn 0.5 Zn 0.5 Fe 2 O 4 contributes to the enhanced photoelectrochemical properties and photoelectrocatalytic activity of TiO 2 nanotube arrays.
Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes
Publisher: Wiley
Date: 04-05-2015
Nanosize Zr-metal organic framework (UiO-66) for hydrogen and carbon dioxide storage
Publisher: Elsevier BV
Date: 04-2012
Size-tailored porous spheres of manganese oxides for catalytic oxidation via peroxymonosulfate activation
Publisher: American Chemical Society (ACS)
Date: 19-07-2016
Multi scale and physics models for intermediate and low temperatures H+-solid oxide fuel cells with H+/e-/O2- mixed conducting properties: Part A, generalized percolation theory for LSCF-SDC-BZCY 3-component cathodes
Publisher: Elsevier BV
Date: 2016
Use of optical interferometry to measure gold nanoparticle adsorption on silica
Publisher: Elsevier BV
Date: 10-2016
Systematic study of aqueous monoethanolamine (MEA)-based CO2 capture process: Techno-economic assessment of the MEA process and its improvements
Publisher: Elsevier BV
Date: 03-2016
0D (MoS2 )/2D (g-C3 N4 ) heterojunctions in Z-scheme for enhanced photocatalytic and electrochemical hydrogen evolution
Publisher: Elsevier BV
Date: 07-2018
Magnetic Fe3 O4 /carbon sphere/cobalt composites for catalytic oxidation of phenol solutions with sulfate radicals
Publisher: Elsevier BV
Date: 06-2014
Technical and Energy Performance of an Advanced, Aqueous Ammonia-Based CO2 Capture Technology for a 500 MW Coal-Fired Power Station
Publisher: American Chemical Society (ACS)
Date: 31-07-2015
Abstract: Using a rate-based model, we assessed the technical feasibility and energy performance of an advanced aqueous-ammonia-based postcombustion capture process integrated with a coal-fired power station. The capture process consists of three identical process trains in parallel, each containing a CO2 capture unit, an NH3 recycling unit, a water separation unit, and a CO2 compressor. A sensitivity study of important parameters, such as NH3 concentration, lean CO2 loading, and stripper pressure, was performed to minimize the energy consumption involved in the CO2 capture process. Process modifications of the rich-split process and the interheating process were investigated to further reduce the solvent regeneration energy. The integrated capture system was then evaluated in terms of the mass balance and the energy consumption of each unit. The results show that our advanced ammonia process is technically feasible and energy-competitive, with a low net power-plant efficiency penalty of 7.7%.
Co3 O4 nanocrystals with predominantly exposed facets: Synthesis, environmental and energy applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA12960H
A study on the UV- and thermo- stability of organosilane-functionalized carbon dots films
Publisher: Trans Tech Publications, Ltd.
Date: 07-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.557-559.739
Abstract: In this work, high quantum yield nanodots were produced by using an organosilane as a coordinating solvent and fabricated the product into solid films. In order to assess the practicality as a material for optoelectronic device, solid state properties were analyzed extensively including UV stability and thermal stability.
CO2 capture using piperazine-promoted, aqueous ammonia solution: Rate-based modelling and process simulation
Publisher: Elsevier BV
Date: 10-2017
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
Research progress of perovskite materials in photocatalysis- and photovoltaics-related energy conversion and environmental treatment
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CS00113G
Abstract: Perovskite materials are shown to be active in the applications of photocatalysis- and photovoltaics-related energy conversion and environmental treatment.
Co-SBA-15 for heterogeneous oxidation of phenol with sulfate radical for wastewater treatment
Publisher: Elsevier BV
Date: 10-2011
CFD simulation of solid-liquid stirred tanks
Publisher: Elsevier BV
Date: 07-2012
A graph theoretical approach to the elucidation of reaction mechanisms: Analysis of the chlorine electrode reaction
Publisher: Elsevier BV
Date: 02-2013
Hierarchically porous cobalt-carbon nanosphere-in-microsphere composites with tunable properties for catalytic pollutant degradation and electrochemical energy storage
Publisher: Elsevier BV
Date: 11-2018
DOI: 10.1016/J.JCIS.2018.07.010
Abstract: Unreliable energy supply and environmental pollution are two major concerns of the human society in this century. Herein, we report a rational approach on preparation of hierarchically-structured cobalt-carbon composites with tunable properties for a number of applications. A facile hydrothermal treatment of cobalt nitrate and sucrose results in the formation of a metallic cobalt-amorphous carbon composite with cobalt nanospheres anchored homogenously on an amorphous carbon substrate. Tuning the calcination conditions in air will generate either a metallic cobalt-cobalt oxide core-shell structure with magnetism or a fully oxidized Co
Fabrication of α-Fe<inf>2</inf>O<inf>3</inf>/In<inf>2</inf>O<inf>3</inf> composite hollow microspheres: A novel hybrid photocatalyst for toluene degradation under visible light
Publisher: Elsevier BV
Date: 11-2015
DOI: 10.1016/J.JCIS.2015.06.008
Abstract: The α-Fe2O3/In2O3 composite hollow microspheres were first synthesized through a well-designed two-step hydrothermal approach with an aim to promote the photocatalytic activity of the pure In2O3. The morphologies, phase structures, and optical properties of the resultant s les were systematically characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, UV-vis diffuse-reflectance, and photoluminescence spectroscopy. The α-Fe2O3 nanoparticles acted as visible-light sensitizer, which were well-decorated on the surface of the In2O3 hollow microspheres. Meanwhile, the investigation of photocatalytic performance confirmed that the visible-light induced photocatalytic degradation rate of gaseous toluene was improved after the introduction of α-Fe2O3 component, which was about 1.6 times higher than that of pure In2O3 s le under identical conditions. Furthermore, some intermediates formed during the photocatalytic oxidation process were also indentified by in situ FTIR spectroscopy. The enhanced photocatalytic performance of the α-Fe2O3/In2O3 composites mainly stemmed from the strong visible-light-harvesting ability and the efficient spatial separation of photo-generated electron-hole pairs.
Hydrodynamics of a rectangular liquid JET in an immiscible liquid-liquid system
Publisher: Wiley
Date: 14-12-2013
DOI: 10.1002/CJCE.20701
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.
Photocatalytic degradation of gaseous toluene over hollow spindle-like α-Fe 2 O 3 loaded with Ag
Publisher: Elsevier BV
Date: 06-2012
One-step synthesis of flour-derived functional nanocarbons with hierarchical pores for versatile environmental applications
Publisher: Elsevier BV
Date: 09-2018
Removal of phenol using sulphate radicals activated by natural zeolite-supported cobalt catalysts
Publisher: Springer Science and Business Media LLC
Date: 20-11-2013
Green synthesis of mesoporous ZnFe2 O4 /C composite microspheres as superior anode materials for lithium-ion batteries
Publisher: Elsevier BV
Date: 07-2014
B-Site Cation-Ordered Double-Perovskite Oxide as an Outstanding Electrode Material for Supercapacitive Energy Storage Based on the Anion Intercalation Mechanism
Publisher: American Chemical Society (ACS)
Date: 22-02-2018
Abstract: Perovskite oxides are highly promising electrodes for oxygen-ion-intercalation-type supercapacitors owing to their high oxygen vacancy concentration, oxygen diffusion rate, and tap density. Based on the anion intercalation mechanism, the capacitance is contributed by surface redox reactions and oxygen ion intercalation in the bulk materials. A high concentration of oxygen vacancies is needed because it is the main charge carrier. In this study, we propose a B-site cation-ordered Ba
Analysis of available data from liquefied natural gas rollover incidents to determine critical stability ratios
Publisher: Wiley
Date: 25-10-2013
DOI: 10.1002/AIC.14254
Are microorganisms indispensable in green microbial nanomaterial synthesis?
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA00555D
Abstract: Typical microbial synthesis relies heavily on microbial alchemy.
Preparation and characterization of sorbitol modified nanoclay with high amylose bionanocomposites
Publisher: Elsevier BV
Date: 04-2011
An adaptive non-linear observer for the estimation of temperature distribution in the planar solid oxide fuel cell
Publisher: Elsevier BV
Date: 03-2013
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
Solid oxide fuel cell reactor analysis and optimisation through a novel multi-scale modelling strategy
Publisher: Elsevier BV
Date: 07-2015
Wα Mn1 - α ox Catalysts Synthesized by a One-Step Urea Co-precipitation Method for Selective Catalytic Reduction of NOx with NH3 at Low Temperatures
Publisher: American Chemical Society (ACS)
Date: 18-12-2016
Less is more, greener microbial synthesis of silver nanoparticles
Publisher: Elsevier BV
Date: 12-2014
DOI: 10.1016/J.ENZMICTEC.2014.09.003
Abstract: Microbial nano-synthesis has been well established as a green method for the sustainable development of nanotechnology. However, the mechanism of this biotechnology has to be reconsidered with the increasing realization that microorganism culture broth plays a vital role during the synthesis, which may obviate the dependence on microbes. Here, we demonstrate that silver nanoparticles (AgNPs) could be synthesized in several types of microorganism culture broth (an aqueous solution abundant in peptone, yeast extract from Saccharomyces cerevisiae, dextrose and other reducing and stabilizing agents) without any specific living microbe involvement. Light and high pH values of broth were identified as two critical factors in ensuring pure AgNPs formation. In broths containing NaCl at high concentration (0.5wt%), silver chloride was identified as the major intermediate and could be converted to AgNPs via one-pot photoreduction. Our broth alone strategy dramatically simplifies the conventional microbial nano-synthesis process by cutting the use of microorganisms and thus provides a more eco-friendly way for nano-Ag preparation. The fundamental understanding of the microbial synthesis mechanisms and implementing of complete green methods to fabricate technologically important nanomaterials will be further promoted by this study.
Enhanced photoeletrocatalytic reduction dechlorinations of PCP by Ru-Pd BQDs anchored Titania NAEs composites with double Schottky junctions: First-principles evidence and experimental verifications
Publisher: Elsevier BV
Date: 07-2018
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.
Photocatalytic degradation of gaseous toluene over TiO2-SiO2 composite nanotubes synthesized by sot-gel with template technique
Publisher: Elsevier BV
Date: 02-2012
One-pot synthesis of N-doped graphene for metal-free advanced oxidation processes
Publisher: Elsevier BV
Date: 06-2016
Development and validation of a computationally efficient pseudo 3D model for planar SOFC integrated with a heating furnace
Publisher: Elsevier BV
Date: 04-2016
Self-assembled mesoporous TiO2 /carbon nanotube composite with a three-dimensional conducting nanonetwork as a high-rate anode material for lithium-ion battery
Publisher: Elsevier BV
Date: 05-2014
Halogen element modified titanium dioxide for visible light photocatalysis
Publisher: Elsevier BV
Date: 08-2010
Enhanced sulfur tolerance of nickel-based anodes for oxygen-ion conducting solid oxide fuel cells by incorporating a secondary water storing phase
Publisher: American Chemical Society (ACS)
Date: 10-2014
DOI: 10.1021/ES503603W
Abstract: In this work, a Ni+BaZr(0.4)Ce(0.4)Y(0.2)O(3-δ) (Ni+BZCY) anode with high water storage capability is used to increase the sulfur tolerance of nickel electrocatalysts for solid oxide fuel cells (SOFCs) with an oxygen-ion conducting Sm(0.2)Ce(0.8)O(1.9) (SDC) electrolyte. Attractive power outputs are still obtained for the cell with a Ni+BZCY anode that operates on hydrogen fuels containing 100-1000 ppm of H2S, while for a similar cell with a Ni+SDC anode, it displays a much reduced performance by introducing only 100 ppm of H2S into hydrogen. Operating on a hydrogen fuel containing 100 ppm of H2S at 600 °C and a fixed current density of 200 mA cm(-2), a stable power output of 148 mW cm(-2) is well maintained for a cell with a Ni+BZCY anode within a test period of 700 min, while it was decreased from an initial value of 137 mW cm(-2) to only 81 mW cm(-2) for a similar cell with a Ni+SDC anode after a test period of only 150 min. After the stability test, a loss of the Ni percolating network and reaction between nickel and sulfur appeared over the Ni+SDC anode, but it is not observed for the Ni+BZCY anode. This result highly promises the use of water-storing BZCY as an anode component to improve sulfur tolerance for SOFCs with an oxygen-ion conducting SDC electrolyte.
Activated carbon supported cobalt catalysts for advanced oxidation of organic contaminants in aqueous solution
Publisher: Elsevier BV
Date: 20-10-2010
Structural and oxygen-transport studies of double perovskites PrBa1−xCo2O5+δ(x = 0.00, 0.05, and 0.10) toward their application as superior oxygen reduction electrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 26-09-2014
DOI: 10.1039/C4TA04372C
Erratum to A numerical study on the role of geometry confinement and fluid flow in colloidal self-assembly [Powder Technology 214/3 (2011) 283-291]
Publisher: Elsevier BV
Date: 06-2012
Evaluation of fuel diversity in Solid Oxide Fuel Cell system
Publisher: Elsevier BV
Date: 12-2018
Fabrication and characterization of polyamide thin film nanocomposite (TFN) nanofiltration membrane impregnated with TiO2 nanoparticles
Publisher: Elsevier BV
Date: 03-2013
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
A novel bottom-up solvothermal synthesis of carbon nanosheets
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA13593D
Existence of periodic solutions of a continuous flow bioreactor model with impulsive control in microorganisms
Publisher: Springer Science and Business Media LLC
Date: 26-12-2017
Inherently Catalyzed Boudouard Reaction of Bamboo Biochar for Solid Oxide Fuel Cells with Improved Performance
Publisher: American Chemical Society (ACS)
Date: 05-01-2018
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.
Verification of EMMS formulation using lattice Boltzmann simulations
Publisher: Elsevier BV
Date: 05-2014
Nano La0.6 Ca0.4 Fe0.8 Ni0.2 O3-δ decorated porous doped ceria as a novel cobalt-free electrode for symmetrical solid oxide fuel cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA03485F
Abstract: Nano La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ (LCFN)-infiltrated porous Sm 0.2 Ce 0.8 O 1.9 (SDC) composite is a promising electrode material for “symmetrical” SOFCs due to the excellent anode and cathode performance.
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.
Facile synthesis of carbon-doped mesoporous anatase TiO2 for the enhanced visible-light driven photocatalysis
Publisher: Royal Society of Chemistry (RSC)
Date: 16-09-2014
DOI: 10.1039/C4CC05544F
Abstract: Here we report a low-cost and facile synthesis approach for carbon-doped mesoporous anatase TiO2 by using Ti(BuO)4 as a source for both Ti and carbon through xerogel carbonization in a hypoxic atmosphere. The resultant mesoporous C-TiO2 with high crystallinity exhibits excellent photocatalytic activities for degradation of methyl orange (MO) and phenol under visible light irradiation.
Influence of sealing materials on the oxygen permeation fluxes of some typical oxygen ion conducting ceramic membranes
Publisher: Elsevier BV
Date: 11-2201
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.
Direct Operation of Solid Oxide Fuel Cells on Low-Concentration Oxygen-Bearing Coal-Bed Methane with High Stability
Publisher: American Chemical Society (ACS)
Date: 04-01-2018
An adaptable steady state aspen hysys model for the methane fuelled solid oxide fuel cell
Publisher: Elsevier BV
Date: 02-2014
Simulations of photodegradation of toluene and formaldehyde in a monolith reactor using computational fluid dynamics
Publisher: Wiley
Date: 08-02-2011
DOI: 10.1002/AIC.12295
Nanosized Co3 O4 /SiO2 for heterogeneous oxidation of phenolic contaminants in waste water
Publisher: Elsevier BV
Date: 02-2011
An alternative way of estimating anodic and cathodic transfer coefficients from PEMFC polarization curves
Publisher: Elsevier BV
Date: 15-01-2010
Rate-based modelling of combined SO2 removal and NH3 recycling integrated with an aqueous NH3 -based CO2 capture process
Publisher: Elsevier BV
Date: 06-2015
Theoretical and experimental study of NH3 suppression by addition of Me(II) ions (Ni, Cu and Zn) in an ammonia-based CO2 capture process
Publisher: Elsevier BV
Date: 05-2014
A novel spinning disc continuous stir tank and settler reactor (SDCSTR) model for continuous synthesis of titania: A phenomenological model
Publisher: Informa UK Limited
Date: 28-10-2011
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
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)
A novel concept for improved thermal management of the planar SOFC
Publisher: Elsevier BV
Date: 03-2013
Adsorptive remediation of environmental pollutants using novel graphene-based nanomaterials
Publisher: Elsevier BV
Date: 06-2013
3D core-shell architecture from infiltration and beneficial reactive sintering as highly efficient and thermally stable oxygen reduction electrode
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA13253F
Photo-driven bioelectrochemical photocathode with polydopamine-coated TiO 2 nanotubes for self-sustaining MoS 2 synthesis to facilitate hydrogen evolution
Publisher: Elsevier BV
Date: 02-2019
Renewable acetic acid in combination with solid oxide fuel cells for sustainable clean electric power generation
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA10538E
Enhancing interfacial charge transfer on novel 3D/1D multidimensional MoS 2 /TiO 2 heterojunction toward efficient photoelectrocatalytic removal of levofloxacin
Publisher: Elsevier BV
Date: 02-2019
Hydrodynamics of an FCC riser using energy minimization multiscale drag model
Publisher: Elsevier BV
Date: 04-2011
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
Adsorption of CH4 and CO2 on Zr-metal organic frameworks
Publisher: Elsevier BV
Date: 2012
DOI: 10.1016/J.JCIS.2011.09.060
Abstract: Zirconium-metal organic frameworks (Zr-MOFs) were synthesized with or without ammonium hydroxide as an additive in the synthesis process. It was found that addition of ammonium hydroxide would change the textural structure of Zr-MOF. The BET surface area, pore volume, and crystal size of Zr-MOF were reduced after addition of ammonium hydroxide. However, the crystalline structure and thermal stability were maintained and no functional groups were formed. Adsorption tests showed that Zr-MOF presented much higher CO(2) adsorption than CH(4). Zr-MOF exhibited CO(2) and CH(4) adsorption of 8.1 and 3.6 mmol/g, respectively, at 273 K, 988 kPa. The addition of ammonium hydroxide resulted in the Zr-MOF with a slight lower adsorption of CO(2) and CH(4), however, the selectivity of CO(2)/CH(4) is significantly enhanced.
Evaluation of engineering and technology activities in primary schools in terms of learning environment, attitudes and understanding
Publisher: Springer Science and Business Media LLC
Date: 07-11-2018
Use of digital technologies in bridging the gap between face-to-face and remote engineering programs
Publisher: IEEE
Date: 02-2013
Solar Photocatalytic Water Oxidation and Purification on ZIF-8-Derived C-N-ZnO Composites
Publisher: American Chemical Society (ACS)
Date: 19-10-2017
Improvement of catalytic activity over Mn-modified CeZrOx catalysts for the selective catalytic reduction of NO with NH3
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.JCIS.2018.07.050
Abstract: A series of MnCeZrO
The effect of nitrogen-doped mesoporous carbon spheres (NMCSs) on the electrochemical behavior of carbon steel in simulated concrete pore water
Publisher: Springer International Publishing
Date: 2017
Combustion-derived nanocrystalline LiMn2 O4 as a promising cathode material for lithium-ion batteries
Publisher: Elsevier BV
Date: 02-2015
Controlling particle size and photoelectrochemical properties of nanostructured WO3 with surfactants
Publisher: Elsevier BV
Date: 06-2014
Simultaneous estimation of states and inputs in a planar solid oxide fuel cell using nonlinear adaptive observer design
Publisher: Elsevier BV
Date: 02-2014
Experimental study on feasibility of H2 and N2 as hydrate inhibitors in natural gas pipelines
Publisher: American Chemical Society (ACS)
Date: 20-10-2014
DOI: 10.1021/JE500633U
Photocatalytic performances and activities in Ag-doped ZnAl 2 O4 nanorods studied by FTIR spectroscopy
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2CY20377D
Mechanistic investigation of the enhanced NH3 -SCR on cobalt-decorated Ce-Ti mixed oxide: In situ FTIR analysis for structure-activity correlation
Publisher: Elsevier BV
Date: 2017
Insight into the mechanism of photocatalytic degradation of gaseous o-dichlorobenzene over flower-type V2 O5 hollow spheres
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA02295A
Abstract: The flower-type V 2 O 5 hollow microspheres with assistance of carbon-sphere templates were fabricated and applied to photocatalytic degradation of gaseous o -DCB.
Topological analysis of hydrogen oxidation reaction kinetics at Ni/YSZ anode of the solid oxide fuel cell
Publisher: Elsevier BV
Date: 07-2012
Modelling the Natural Gas Pipeline Internal Corrosion Rate Resulting from Hydrate Formation
Publisher: Elsevier
Date: 2011
High performance heterojunction photocatalytic membranes formed by embedding Cu2 O and TiO2 nanowires in reduced graphene oxide
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CY00082D
Abstract: We reported a facile approach to fabricate Cu 2 O/TiO 2 /rGO heterojunction membranes with superior photocatalytic efficiency and significantly improved photocorrosion resistance.
Metal-free carbon based air electrodes for Zn-air batteries: Recent advances and perspective
Publisher: Elsevier BV
Date: 08-2021
Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate
Publisher: Elsevier BV
Date: 08-2010
Artificial Intelligence techniques applied as estimator in chemical process systems - A literature survey
Publisher: Elsevier BV
Date: 08-2015
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.
Modeling of Cryogenic Liquefied Natural Gas Ambient Air Vaporizers
Publisher: American Chemical Society (ACS)
Date: 07-06-2018
Insights into the applicability of the R dot approach for reaction mechanism kinetics studies
Publisher: Elsevier BV
Date: 02-2012
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
Comparison of Turbulence Models for Single Sphere Simulation Study under Supercritical Fluid Condition
Publisher: Walter de Gruyter GmbH
Date: 05-09-2017
Abstract: In this paper, the comparison of turbulence models for fluid flow past single sphere under supercritical conditions is reported. Firstly, Dixon et al.’s models [1], which are under non-supercritical conditions, were used as benchmarks to validate the simulated results. Two turbulence models namely RNG k-ε and SST k-ω models parameters were fine-tuned accordingly in order to obtain almost comparable results generated by Dixon et al.’s models [1]. The simulation works were then extended to simulate flow of supercritical carbon dioxide. The second part of this paper, therefore, presents a comparative study of the turbulence models i. e. standard k-ε , RNG k-ε , realizable k-ε and SST k-ω models. This study emphasises on the predictions and evaluations of the velocity profiles at different flow regimes namely recirculation, recovery and near-wake. Simulations were carried out to determine the velocity profiles at subcritical and supercritical conditions by varying Reynolds numbers (2000 and 20,000), pressures (65 and 80 bar) and temperatures (283.15 and 308.15K). Simulation results indicate that the predicted results are consistent with the literature data. Interesting flow features were identified for all the simulations. The results of this study also reveal that the SST k-ω turbulence model was able to better capture the flow characteristics near-wake of the sphere.
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
Cobalt-free SrFe<inf>0.9</inf>Ti<inf>0.1</inf>O<inf>3-δ</inf> as a high-performance electrode material for oxygen reduction reaction on doped ceria electrolyte with favorable CO<inf>2</inf> tolerance
Publisher: Elsevier BV
Date: 09-2015
Combined spectroscopic and theoretical approach to sulfur-poisoning on Cu-supported Ti-Zr mixed oxide catalyst in the selective catalytic reduction of NOx
Publisher: American Chemical Society (ACS)
Date: 25-06-2014
DOI: 10.1021/CS5005739
A carbon-air battery for high power generation
Publisher: Wiley
Date: 23-01-2015
Abstract: We report a carbon-air battery for power generation based on a solid-oxide fuel cell (SOFC) integrated with a ceramic CO2-permeable membrane. An anode-supported tubular SOFC functioned as a carbon fuel container as well as an electrochemical device for power generation, while a high-temperature CO2-permeable membrane composed of a CO3(2-) mixture and an O(2-) conducting phase (Sm(0.2)Ce(0.8)O(1.9)) was integrated for in situ separation of CO2 (electrochemical product) from the anode chamber, delivering high fuel-utilization efficiency. After modifying the carbon fuel with a reverse Boudouard reaction catalyst to promote the in situ gasification of carbon to CO, an attractive peak power density of 279.3 mW cm(-2) was achieved for the battery at 850 °C, and a small stack composed of two batteries can be operated continuously for 200 min. This work provides a novel type of electrochemical energy device that has a wide range of application potentials.
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.
Addressing interdisciplinary process engineering design, construction and operations through 4D virtual environments
Publisher: Elsevier
Date: 2011
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
Fabrication, characterization, and photocatalytic property of α-Fe2 O3 /graphene oxide composite
Publisher: Springer Science and Business Media LLC
Date: 29-05-2013
Facile synthesis of tube-shaped Mn-Ni-Ti solid solution and preferable Langmuir-Hinshelwood mechanism for selective catalytic reduction of NOx by NH3
Publisher: Elsevier BV
Date: 2018
SrNb0.1 Co0.7 Fe0.2 O3-δ perovskite as a next-generation electrocatalyst for oxygen evolution in alkaline solution
Publisher: Wiley
Date: 04-02-2015
Abstract: The perovskite SrNb0.1 Co0.7 Fe0.2 O3-δ (SNCF) is a promising OER electrocatalyst for the oxygen evolution reaction (OER), with remarkable activity and stability in alkaline solutions. This catalyst exhibits a higher intrinsic OER activity, a smaller Tafel slope and better stability than the state-of-the-art precious-metal IrO2 catalyst and the well-known BSCF perovskite. The mass activity and stability are further improved by ball milling. Several factors including the optimized eg orbital filling, good ionic and charge transfer abilities, as well as high OH(-) adsorption and O2 desorption capabilities possibly contribute to the excellent OER activity.
A numerical study on the role of geometry confinement and fluid flow in colloidal self-assembly
Publisher: Elsevier BV
Date: 12-2011
FePO4 based single chamber air-cathode microbial fuel cell for online monitoring levofloxacin
Publisher: Elsevier BV
Date: 05-2017
DOI: 10.1016/J.BIOS.2016.12.021
Abstract: A bio-electrochemical strategy was developed for constructing a simple and sensitive levofloxacin (LEV) sensor based on a single chamber microbial fuel cell (SC-MFC) using FePO
Photocatalytic oxidation of phenolic compounds using zinc oxide and sulphate radicals under artificial solar light
Publisher: Elsevier BV
Date: 12-01-2010
The importance of ground temperature to a liquid carbon dioxide pipeline
Publisher: Elsevier BV
Date: 08-2015
Improved Tank in Series Reactor Model for Tubular Solid Oxide Fuel Cell Stacks
Publisher: Wiley
Date: 06-04-2011
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.
The influence of corrosion inhibitors on hydrate formation temperature along the subsea natural gas pipelines
Publisher: Elsevier BV
Date: 08-2014
Fabrication and operation of flow-through tubular SOFCs for electric power and synthesis gas cogeneration from methane
Publisher: Wiley
Date: 20-12-2014
DOI: 10.1002/AIC.14312
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.
Identification and predictive control of a multistage evaporator
Publisher: Elsevier BV
Date: 12-2010
Synthesis of doped BiNbO 4 photocatalysts for removal of gaseous volatile organic compounds with artificial sunlight
Publisher: Elsevier BV
Date: 03-2012
The role of copper species on Cu/gamma-Al2O3 catalysts for NH3-SCO reaction
Publisher: Elsevier BV
Date: 02-2012
Mesoporous carbon with large pores as anode for Na-ion batteries
Publisher: Springer Science and Business Media LLC
Date: 28-02-2014
Amorphous V-O-C composite nanofibers electrospun from solution precursors as binder-and conductive additive-free electrodes for supercapacitors with outstanding performance
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3NR04484J
Abstract: Flexible V-O-C composite nanofibers were fabricated from solution precursors via electrospinning and were investigated as free-standing and additive-free film electrodes for supercapacitors. Specifically, composite nanofibers (V0, V5, V10 and V20) with different vanadyl acetylacetonate (VO(acac)2) contents of 0, 5, 10 and 20 wt% with respect to polyacrylonitrile (PAN) were prepared. The composite nanofibers were comparatively studied using XRD, Raman spectroscopy, XPS, N2 adsorption-desorption, FE-SEM, TEM and S-TEM. The vanadium element was found to be well-dispersed in the carbon nanofibers, free from the formation of an aggregated crystalline phase, even in the case of V20. A specific surface area of 587.9 m(2) g(-1) was reached for V10 after calcination, which is approximately twice that of the vanadium-free carbon nanofibers (V0, 300.9 m(2) g(-1)). To perform as an electrode for supercapacitors in an aqueous electrolyte, the V10 film delivered a specific capacitance of 463 F g(-1) at 1 A g(-1). V10 was also able to retain a specific capacitance of 380 F g(-1), even at a current density of 10 A g(-1). Additionally, very stable cycling stability was achieved, maintaining an outstanding specific capacitance of 400 F g(-1) at 5 A g(-1) after charge-discharge cycling 5000 times. Thus, V-O-C composite nanofibers are highly attractive electrode materials for flexible, high-power, thin film energy storage devices and applications.
General Regulation of Air Flow Distribution Characteristics within Planar Solid Oxide Fuel Cell Stacks
Publisher: American Chemical Society (ACS)
Date: 11-01-2017
Process Investigation of a Solid Carbon-Fueled Solid Oxide Fuel Cell Integrated with a CO2 -Permeating Membrane and a Sintering-Resistant Reverse Boudouard Reaction Catalyst
Publisher: American Chemical Society (ACS)
Date: 19-11-2016
A 3D porous architecture composed of TiO2 nanotubes connected with a carbon nanofiber matrix for fast energy storage
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA12770B
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+).
Application of iron oxide based nanomaterials (NMs) in magnetic assisted chemical separation (MACS) processes for water/wastewater treatment
Publisher: Trans Tech Publications, Ltd.
Date: 12-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.610-613.1242
Abstract: With growing concerns over clean environment and human health, water/wastewater treatment turns towards more restrictive objectives of water quality. In the past decade, a lot of research work has been focused on the water decontamination by magnetic assisted chemical separation (MACS) processes using iron oxide magnetic nanoparticles (MNPs) (mainly magnetite (Fe 3 O 4 ) or maghemite (γ-Fe 2 O 3 )) as magnetic seeds. These particles are generally modified with various functional materials to increase their affinity or degradation capacity toward target compounds. In addition, these materials are relatively easy to be regenerated and recycled via magnetic separation, therefore are considered a great water purification media in practice. This paper offers a literature review of applications of these magnetic NMs in MACS processes for water/wastewater treatment.
One-pot synthesis of Bi-Ni nanowire and nanocable arrays by coelectrodeposition approach
Publisher: Springer Science and Business Media LLC
Date: 15-02-2012
Abstract: A novel and convenient one-pot electrodeposition approach has been developed for precisely controlled fabrication of large-scale Bi-Ni nanowire and nanocable arrays. Using porous anodic aluminum oxide as a shape-directing template, by simply changing the electrochemical deposition mode, desired Bi-Ni hybrid nanowires and Bi-Ni core-shell nanocables have been obtained in the CV and CC modes, respectively. The structure, morphology, and composition of the as-prepared s les were characterized using X-ray powder diffraction, transmission electron microscopy, elemental mapping, and energy-dispersive X-ray spectrometry.
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.
Ceramic Lithium Ion Conductor to Solve the Anode Coking Problem of Practical Solid Oxide Fuel Cells
Publisher: Wiley
Date: 29-04-2015
Abstract: For practical solid oxide fuel cells (SOFCs) operated on hydrocarbon fuels, the facile coke formation over Ni-based anodes has become a key factor that limits their widespread application. Modification of the anodes with basic elements may effectively improve their coking resistance in the short term however, the easy loss of basic elements by thermal evaporation at high temperatures is a new emerging problem. Herein, we propose a new design to develop coking-resistant and stable SOFCs using Li(+) -conducting Li0.33 La0.56 TiO3 (LLTO) as an anode component. In the Ni/LLTO composite, any loss of surface lithium can be efficiently compensated by lithium diffused from the LLTO bulk under operation. Therefore, the SOFC with the Ni/LLTO anode catalyst layer yields excellent power outputs and operational stability. Our results suggest that the simple adoption of a Li(+) conductor as a modifier for Ni-based anodes is a practical and easy way to solve the coking problem of SOFCs that operate on hydrocarbons.
Heterogeneous activation of peroxymonosulphate by supported ruthenium catalysts for phenol degradation in water
Publisher: Elsevier BV
Date: 05-2012
DOI: 10.1016/J.JHAZMAT.2012.02.045
Abstract: Activated carbon (AC) and Zeolite Socony Mobil-5 (ZSM5) supported ruthenium oxide catalysts were prepared and tested to degrade aqueous phenol in the presence of peroxymonosulphate. The physicochemical properties of ruthenium oxide based catalysts were characterised by several techniques such as XRD (X-ray diffraction), SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy), and N(2) adsorption. It was found that RuO(2)/AC was highly effective in heterogeneous activation of peroxymonosulphate to produce sulphate radicals, presenting higher reaction rate in phenol degradation compared with RuO(2)/ZSM-5. Degradation efficiency of phenol could be achieved at 100% of phenol decomposition and 60% of total organic carbon (TOC) removal in 1h at the conditions of 50ppm phenol, 0.2g catalyst, 1g Oxone(®) in 500mL solution at 25°C using the two catalysts. It was also found that phenol degradation was strongly influenced by catalyst loading, phenol concentration, Oxone(®) concentration and temperature. Kinetic studies proved that a pseudo first order kinetics would fit to phenol decomposition and the activation energies for RuO(2)/AC and RuO(2)/ZSM5 were obtained to be 61.4 and 42.2kJ/mol, respectively.
Flower-like MoS2 on graphitic carbon nitride for enhanced photocatalytic and electrochemical hydrogen evolutions
Publisher: Elsevier BV
Date: 12-2018
Quantum-sized BiVO4 modified TiO2 microflower composite heterostructures: Efficient production of hydroxyl radicals towards visible light-driven degradation of gaseous toluene
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA05659D
Abstract: The enhanced photocatalytic activity of the quantum-BiVO 4 /TiO 2 composite was mainly attributed to the high separation of photo-induced electron–hole pairs and the efficient production of hydroxyl radicals.
Hydrodynamic investigation of bubble-column reactors: Effect of column configuration
Publisher: Wiley
Date: 07-2010
DOI: 10.1002/APJ.458
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
Nitrogen-doped simple and complex oxides for photocatalysis: A review
Publisher: Elsevier BV
Date: 03-2018
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
Investigating and modelling of light intensity distribution inside algal photobioreactor
Publisher: Elsevier BV
Date: 12-2017
Enhanced electrochemical performance, water storage capability and coking resistance of a Ni+BaZr0.1 Ce0.7 Y0.1 Yb0.1 O3-δ anode for solid oxide fuel cells operating on ethanol
Publisher: Elsevier BV
Date: 04-2015
Improved performance of a symmetrical solid oxide fuel cell by swapping the roles of doped ceria and La0.6 Sr1.4 MnO4+δ in the electrode
Publisher: Elsevier BV
Date: 02-2017
Photocatalytic oxidation of water and air contaminants with metal doped BiTaO 4 irradiated with visible light
Publisher: Elsevier BV
Date: 09-2012
Branch number matters: Promoting catalytic reduction of 4-nitrophenol over gold nanostars by raising the number of branches and coating with mesoporous SiO2
Publisher: Elsevier BV
Date: 09-2016
DOI: 10.1016/J.JCIS.2015.11.032
Abstract: In this study, we demonstrate for the first time that highly branched gold nanostars (AuNSs) and silica-coated AuNSs (AuNSs@mSiO2) could potentially serve as efficient hydrogenation catalysts. The catalytic activity could be promoted by raising the number of tipped-branches of AuNSs, which reveals that the tips play an important role as active sites. The fabricated sharply-pointed AuNSs benefit the electron transfer from BH4 anions to 4-nitrophenol. Coating AuNSs with mesoporous silica (AuNSs@mSiO2) further enhanced the reduction rate and recyclability, and also contributed to reducing the induction period. The AuNSs@mSiO2 (50-100nm in diameter) are large enough to be catalytically inactive, but they consist of sharply-pointed tips with the radius of 2.6-3.6nm, which are rich in coordinately unsaturated sites similar to those of nanoparticles and clusters. Such features in structure and activity would also extend their application range in heterogeneous catalysis.
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
Preparation of AgInS2/TiO2 composites for enhanced photocatalytic degradation of gaseous o-dichlorobenzene under visible light
Publisher: Elsevier BV
Date: 05-2016
A net draft tube slurry airlift bioreactor for 2,4-D (2,4-dichlorophenoxyacetic acid) pesticide biodegradation
Publisher: Wiley
Date: 15-07-2010
DOI: 10.1002/CJCE.20306
Carbocatalytic activation of persulfate for removal of antibiotics in water solutions
Publisher: Elsevier BV
Date: 03-2016
Modeling the contribution of gas hydrate to corrosion rate along the subsea pipelines
Publisher: Informa UK Limited
Date: 02-09-2014
Hydrodynamics of a fluid catalytic cracking stripper using γ-ray densitometry
Publisher: American Chemical Society (ACS)
Date: 19-04-2011
DOI: 10.1021/IE1021877
Rational design and synthesis of highly oriented copper-zinc ferrite QDs/titania NAE nano-heterojunction composites with novel photoelectrochemical and photoelectrocatalytic behaviors
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT02263A
Abstract: Molecular tailing of spinel-titania nano-heterojunctions towards efficient solar energy conversion and environmental remediation.
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.
Improved tank in series model for the planar solid oxide fuel cell
Publisher: American Chemical Society (ACS)
Date: 19-01-2011
DOI: 10.1021/IE101129K
Size dependence of uniformed carbon spheres in promoting graphitic carbon nitride toward enhanced photocatalysis
Publisher: Elsevier BV
Date: 05-2017
A top-down strategy for the synthesis of mesoporous Ba0.5 Sr0.5 Co0.8 Fe0.2 O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance
Publisher: Elsevier BV
Date: 2015
Planar SOFC system modelling and simulation including a 3D stack module
Publisher: Elsevier BV
Date: 2016
Improved approximation for the Butler-Volmer equation in fuel cell modelling
Publisher: Elsevier BV
Date: 07-2017
Carbon microspheres supported cobalt catalysts for phenol oxidation with peroxymonosulfate
Publisher: Elsevier BV
Date: 09-2015
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).
Cascade applications of robust MIL-96 metal organic frameworks in environmental remediation: Proof of concept
Publisher: Elsevier BV
Date: 06-2018
Facile fabrication and improved carbon dioxide tolerance of a novel bilayer-structured ceramic oxygen permeating membrane
Publisher: Elsevier BV
Date: 12-2014
Influence of surfactants on Fe 2 O 3 nanostructure photoanode
Publisher: Elsevier BV
Date: 11-2012
Photocatalytic generation of sulphate and hydroxyl radicals using zinc oxide under low-power UV to oxidise phenolic contaminants in wastewater
Publisher: Elsevier BV
Date: 17-11-2010
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
Technoeconomic Assessment of an Advanced Aqueous Ammonia-Based Postcombustion Capture Process Integrated with a 650-MW Coal-Fired Power Station
Publisher: American Chemical Society (ACS)
Date: 23-09-2016
Abstract: Using a rigorous, rate-based model and a validated economic model, we investigated the technoeconomic performance of an aqueous NH
High performance porous iron oxide-carbon nanotube nanocomposite as an anode material for lithium-ion batteries
Publisher: Elsevier BV
Date: 09-2016
Techno-economic assessment of stripping modifications in an ammonia-based post-combustion capture process
Publisher: Elsevier BV
Date: 10-2016
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
Potential Impacts and Modelling of the Heat Loss Due to Copper Chelation in Natural Gas Processing and Transport
Publisher: Elsevier
Date: 2011
Bifurcations of limit cycles for a perturbed cubic system with double figure eight loop
Publisher: World Scientific Pub Co Pte Lt
Date: 04-2013
DOI: 10.1142/S0218127413500673
Abstract: This paper is concerned with the distribution and number of limit cycles for a cubic Hamiltonian system under cubic perturbation. The fact that there exist seven limit cycles is proved. The different distributions of limit cycles are given by using the methods of bifurcation theory and qualitative analysis, and the distributions of seven limit cycles are newly established.
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.
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.
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Publisher: Elsevier BV
Date: 07-2018
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