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On the Catalytic Activity and Corrosion Behavior of Polycrystalline Nickel in Alkaline Media in the Presence of Neutral and Reactive Gases Electrocatalysis (IF 2.587) Pub Date : 2021-01-13 Eduardo B. Ferreira, Sadaf Tahmasebi, Gregory Jerkiewicz
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Molecularly imprinted polypyrrole sensors for the detection of pyrene in aqueous solutions Electrocatalysis (IF 2.587) Pub Date : 2021-01-13 Olwethu W. Ngwanya, Meryck Ward, Priscilla G. L. Baker
Recently, electrochemical sensors have emerged as tools for polyaromatic hydrocarbons (PAH) detection that are cost-effective, easy to produce and use, highly selective and sensitive, and with good reproducibility. Polypyrrole may be easily produced from polymerization of pyrrole, by chemical as well as electrochemical methods, to produce dimensionally stable semi-conductive polymer materials, under
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Copper(II) Schiff Base Complex with Electrocatalytic Activity Towards the Oxygen Reduction Reaction and Its Catalase Activity Electrocatalysis (IF 2.587) Pub Date : 2021-01-05 Thaís Petizero Dionízio, Aline Cantuares dos Santos, Felipe Pereira da Silva, Fagner da Silva Moura, Eliane D’Elia, Francisco Manoel dos Santos Garrido, Marta Eloisa Medeiros, Annelise Casellato
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Scalable Production of Monolayer Shell(Pt)@Core(Pd) Nanoparticles by Electroless Cu UPD for Oxygen Reduction Reaction Electrocatalysis (IF 2.587) Pub Date : 2021-01-03 Ijjada Mahesh, Arindam Sarkar
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A Review and Perspective on Electrocatalysts Containing Cr for Alkaline Water Electrolysis: Hydrogen Evolution Reaction Electrocatalysis (IF 2.587) Pub Date : 2021-01-03 A. Falch, Sreejith P. Babu
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Robust and Efficient Pd–Cu Bimetallic Catalysts with Porous Structure for Formic Acid Oxidation and a Mechanistic Study of Electrochemical Dealloying Electrocatalysis (IF 2.587) Pub Date : 2021-01-02 Jili Song, Huichi Zhong, Hao Wu, Zhuojie Xiao, Huiyu Song, Ting Shu, Jianhuang Zeng
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Author Correction: Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method Electrocatalysis (IF 2.587) Pub Date : 2020-11-24 Bernd Cermenek, Boštjan Genorio, Thomas Winter, Sigrid Wolf, Justin G. Connell, Michaela Roschger, Ilse Letofsky-Papst, Norbert Kienzl, Brigitte Bitschnau, Viktor Hacker
Please change equations on page 204.
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Preparation and Assessment of a Polysafranin/Multiwall Carbon Nanotube-Nafion Hybrid Film–Modified Carbon Paste Electrode and Its Performance as an Easy Sensing Probe for H 2 O 2 and Cu 2+ Electrocatalysis (IF 2.587) Pub Date : 2020-11-24 M. Sayahpour, S. Hashemnia, Z. Mokhtari
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One-Pot Synthesis of Fe-N-Containing Carbon Aerogel for Oxygen Reduction Reaction Electrocatalysis (IF 2.587) Pub Date : 2020-11-21 Youling Wang, Sandrine Berthon-Fabry
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Photo-Chlorine Production with Hydrothermally Grown and Vacuum-Annealed Nanocrystalline Rutile Electrocatalysis (IF 2.587) Pub Date : 2020-11-09 Thom R. Harris-Lee, Yan Zhang, Christopher R. Bowen, Philip J. Fletcher, Yuanzhu Zhao, Zhenyu Guo, Jerome W. F. Innocent, S. Andrew L. Johnson, Frank Marken
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A Density Functional Theory and Experimental Study of CO 2 Photoreduction to Methanol over α-Sulfur-TiO 2 Composite Electrocatalysis (IF 2.587) Pub Date : 2020-11-05 Rajkumar Yadav, Gangeshwar Singh, Ankit Mishra, Vikas Verma, Azeem Khan, Neeraj Pal, Anil Kumar Sinha
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Hydrogen Oxidation Artifact During Platinum Oxide Reduction in Cyclic Voltammetry Analysis of Low-Loaded PEMFC Electrodes Electrocatalysis (IF 2.587) Pub Date : 2020-10-31 S. Prass, J. St-Pierre, M. Klingele, K. A. Friedrich, N. Zamel
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Electrooxidation of Acetaldehyde on Pt(111) Surface Modified by Random Defects and Tin Decoration Electrocatalysis (IF 2.587) Pub Date : 2020-10-21 A. F. B. Barbosa, V. Del Colle, B. A. F. Previdello, G. Tremiliosi-Filho
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Electrochemical Oxidation of Carbon Monoxide on Unsupported Gold Nanospheres in Alkaline Medium Electrocatalysis (IF 2.587) Pub Date : 2020-10-13 Nolwenn Mayet, Karine Servat, K. Boniface Kokoh, Teko W. Napporn
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Barium Hydrogen Phosphate Electrodes for High Electrocatalytic and Photoelectrocatalytic Degradation of Rhodamine B in Neutral Medium: Optimization by Response Surface Methodology Electrocatalysis (IF 2.587) Pub Date : 2020-10-10 E. Amaterz, A. Bouddouch, A. Tara, A. Taoufyq, Z. Anfar, B. Bakiz, L. Bazzi, A. Benlhachemi, O. Jbara
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Ratio Oxalate to Formate Tuned by pH During CO 2 Reduction Driven by Solvated Electron at the Electrified Plasma/Liquid Interface Electrocatalysis (IF 2.587) Pub Date : 2020-09-29 A. Mota-Lima
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Sol-gel Synthesis of Ce 0.8 Sr 0.2 Co 1-(x+y) Ni x Fe y O 3-δ ( x = 0.1, 0.2, and y = 0.2, 0.5, 0.7)—a Nanocomposite-Type Electrocatalyst for the Oxygen Evolution Reaction in Alkaline Media Electrocatalysis (IF 2.587) Pub Date : 2020-09-26 C. B. Njoku, R. J. Kriek
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Correction to: Study of the Formic Acid Electrooxidation on Rhodium on Steady State Using a Flow Cell: Potential Dependence of the CO Coverage Electrocatalysis (IF 2.587) Pub Date : 2020-09-21 Gisela C. Luque, María A. Montero, María R. Gennero de Chialvo, Abel C. Chialvo
In the original publication of the article, there is a mistake regarding the adsorbed reaction intermediate HCOOad, which is correctly written in the equations, but in the text it is wrongly written as COOHad.
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Density Functional Theory Study on the Hydrogen Evolution Reaction in the S-rich SnS 2 Nanosheets Electrocatalysis (IF 2.587) Pub Date : 2020-09-04 Yongxiu Sun, Zhiguo Wang
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DFT Calculations of the Adsorption States of O 2 on OH/H 2 O-Covered Pt(111) Electrocatalysis (IF 2.587) Pub Date : 2020-08-15 Juan A. Santana
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Electrocatalytic Oxidation of Dibenzothiophene and 4,6-Dimethyldibenzothiophene at Gold-Polyaniline (Au-PANI) Composite Electrodes Electrocatalysis (IF 2.587) Pub Date : 2020-08-07 Siyabonga Shoba, Owolabi M. Bankole, Adeniyi S. Ogunlaja
In this study, glassy carbon electrodes modified with gold-polyaniline (Au-PANI) were evaluated for the ability to electrochemically oxidize dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Au-PANI was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron micrograph (TEM), and scanning electron micrograph
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Cobalt Nanoparticles Modified Single-Walled Titanium Carbonitride Nanotube Derived from Solid-Solid Separation for Oxygen Reduction Reaction in Alkaline Solution Electrocatalysis (IF 2.587) Pub Date : 2020-07-24 Sefiu Abolaji Rasaki, Zhangwei Chen, Hangjia Shen, Haichuan Guo, Tiju Thomas, Minghui Yang
Titanium carbonitrides have promising catalytic properties for oxygen reduction reaction (ORR). However, its synthesis normally requires high temperatures (1200–1800 °C), thus limiting research carried-out on them. The catalytic properties of the carbonitrides have so far been improved through post-synthesis partial surface oxidation. This makes the entire process of making the desired catalyst cumbersome
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FeNi 3 and Ni-Based Nanoparticles as Electrocatalysts for Magnetically Enhanced Alkaline Water Electrolysis Electrocatalysis (IF 2.587) Pub Date : 2020-07-09 Vivien Gatard, Déborah De Masi, Raphaël Chattot, Irene Mustieles Marin, Juan Manuel Asensio Revert, Pier-Francesco Fazzini, Thierry Encinas, Vincent Martin, Stéphane Faure, Jonathan Deseure, Julian Carrey, Bruno Chaudret, Marian Chatenet
Today, hydrogen mainly originates from fossil sources (gas, oil, and coal). Room temperature water electrolysis is an interesting alternative for renewable electricity storage, even if it is well-known that high-temperature systems are more efficient. To address this issue, we studied different non-platinum group metal (non-PGM) catalysts for alkaline oxygen evolution reaction (OER) and hydrogen evolution
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Evaluating the Effect of WO 3 on Electrochemical and Corrosion Properties of TiO 2 -RuO 2 - Coated Titanium Anodes with Low Content of RuO 2 Electrocatalysis (IF 2.587) Pub Date : 2020-06-27 Elzbieta Kusmierek
The electrochemical and corrosion characterization of Ti0.97Ru0.03O2/Ti electrodes modified with WO3 was reported. Modification of Ti0.97Ru0.03O2/Ti electrodes with WO3 was previously described as improving the effectiveness of an azo dye degradation in a photoelectrochemical treatment. Thus, the effect of WO3 introduction to oxide film on electrode surface on electrochemical behaviour and stability
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Preparation of FTO/CU 2 O Electrode Protected by PEDOT:PSS and Its Better Performance in the Photoelectrocatalytic Reduction of CO 2 to Methanol Electrocatalysis (IF 2.587) Pub Date : 2020-06-25 Pamela Teresa Sánchez de la Cruz, Kallyni Irikura, Abdessadek Lachgar, Juliano Carvalho Cardoso, Hugo Alarcón Cavero, Maria Valnice Boldrin Zanoni
Copper(I) oxide (Cu2O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass electrode and covered with a thin layer of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The electrode was studied in the photoelectrocatalytic reduction of CO2. Methanol was obtained as the major product with a concentration of 460 μmol L−1 with a photoconversion yield of 12% after
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Synthesis and Characterization of AgPd Bimetallic Nanoparticles as Efficient Electrocatalysts for Oxygen Reduction Reaction Electrocatalysis (IF 2.587) Pub Date : 2020-06-20 A. Santoveña-Uribe, J. Maya-Cornejo, D. Bahena, J. Ledesma, R. Pérez, R. Esparza
The synthesis of AgPd bimetallic nanoparticles was carried out by a simple polyol method in order to obtain an improved control of the morphology and the particle size. The nanoparticles were characterized using aberration-corrected scanning/transmission electron microscopy (STEM). Also, parallel beam X-ray diffraction analysis was carried out to evaluate the crystallographic structure. High-angle
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Fabrication of Composite Material with Pd Nanoparticles and Graphene on Nickel Foam for Its Excellent Electrocatalytic Performance Electrocatalysis (IF 2.587) Pub Date : 2020-06-14 Yanmei Shen, Shixiang Lu, Wenguo Xu, Anqi Lv, Ziwen Wang, Hongtao Wang, Guoxiao Liu, Yan Zhang
Incorporation of precious metallic nanoparticles onto a carbon support material is used to obtain an electrocatalyst for ethanol oxidation. A composite material of spherical palladium nanoparticles (Pd NPs), reduced graphene oxide (rGO), and polydopamine (PDA) on three-dimensional nickel foam (NF) substrate (Pd/rGO/PDA@NF) has been synthesized for ethanol electrocatalysis. The Pd nanoparticles were
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Label-Free Electrochemical Immunosensor Based on Gold and Iron-Oxide Nanoparticle Co-modified rGO-TEPA Hybrid for Sensitive Detection of Carcinoembryonic Antigen Electrocatalysis (IF 2.587) Pub Date : 2020-06-12 Haolin Xiao, Shanshan Wei, Zhencheng Chen, Liangli Cao
Herein we report a label-free amperometric immunosensor based on reduced graphene oxide-tetraethylene pentamine (rGO-TEPA) hybrid material co-modified by gold and iron-oxide magnetic nanoparticles (Au/MNPs-rGO-TEPA) for detection of carcinoembryonic antigen (CEA). The Au/MNPs-rGO-TEPA nanomaterials were prepared and coated on the working electrode as a sensing platform for antibody (anti-CEA) immobilization
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Recent Advances in Nanocasting Cobalt-Based Mesoporous Materials for Energy Storage and Conversion Electrocatalysis (IF 2.587) Pub Date : 2020-06-05 Ali Saad, Zhixing Cheng, Hangjia Shen, Tiju Thomas, Minghui Yang
The generation of novel mesoporous materials with well-defined structure and accessible pore networks is helpful in both fundamental and energy-related research. Nanocasting mesoporous earth-abundant materials and their composite materials offer opportunities to make electrochemically active materials that allow scalable production and cost-effectiveness. Recently, due to their intrinsic open pore
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Catalytic Activity of Nanosized Ruthenium Oxide-Coated Titanium Anodes Prepared by Thermal Decomposition for Oxygen Evolution in Sulfuric Acid Solutions Electrocatalysis (IF 2.587) Pub Date : 2020-06-04 Kenji Kawaguchi, Shuhei Kimura, Masatsugu Morimitsu
The effects of the nanoscale particle size of RuO2 in thermally prepared RuO2-coated Ti anodes on electrochemical kinetic parameters such as the active surface area and Tafel slope for oxygen evolution in sulfuric acid solutions were investigated. RuO2/Ti anodes with four different average sizes of RuO2 particles—5.6 nm, 6.8 nm, 14.6 nm, and 21.2 nm—were prepared. The double-layer charge corresponding
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Synergistically Enhanced Electrocatalytic Stability of Pt Catalyst Supported by Doped Porous Carbon Nanostructure for Oxygen Reduction Reaction Electrocatalysis (IF 2.587) Pub Date : 2020-06-02 Suk-Hui Kwon, Seul-Gi Lee, Sang-Beom Han, Kyung-Won Park
In proton exchange membrane fuel cells, the utilization of supporting materials for Pt-based catalysts is an effective approach to improve the oxygen reduction reaction (ORR) performance. In this study, a doped porous carbon (DPC) as a support was prepared with polyaniline as the main carbon source, iron nitrate nonahydrate as a metal doping source, and dicyandiamide as a nitrogen doping source in
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Fabrication of MEA from Biomass-Based Carbon Nanofibers Composited with Nickel-Cobalt Oxides as a New Electrocatalyst for Oxygen Reduction Reaction in Passive Direct Methanol Fuel Cells Electrocatalysis (IF 2.587) Pub Date : 2020-05-30 Farhad Golmohammadi, Masoud Amiri
Biomass has some advantages including renewability, abundant resources, being eco-friendly, easy processing, and low cost; and it is an important step in designing electrocatalysts in fuel cells as clean energy sources. In this study, a biomass-based carbon nanofiber of Typha domingensis, as available biomass source, and nickel-cobalt oxides is synthesized. The physicochemical techniques including
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Multifunctional Material Composed of Cesium Salt of Keggin-Type Heteropolytungstate and PtRh/Vulcan Nanoparticles for Electrochemical Oxidation of 2-Propanol in Acidic Medium Electrocatalysis (IF 2.587) Pub Date : 2020-05-29 Barbara Zakrzewska, Katarzyna Jakubów-Piotrowska, Barbara Gralec, Barbara Kowalewska, Krzysztof Miecznikowski
Platinum–rhodium nanoparticles modified with cesium salt of phosphotungstic acid, CsPTA, have been tested for electro-oxidation of 2-propanol in acidic medium. The resulting Pt-based nanoparticle-containing materials have been carried out using X-ray diffraction (XRD), microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and different electrochemical techniques combining with differential electrochemical
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Graphene Incorporation as a Propitious Approach for Improving the Oxygen Reduction Reaction (ORR) Activity of Self-assembled Polycrystalline NiCo 2 O 4 –NiO Electrocatalysis (IF 2.587) Pub Date : 2020-05-26 Loredana Preda, Nicolae Spataru, Jose Maria Calderon Moreno, Simona Somacescu, Maria Marcu
Electrocatalytic activity of a new, pristine and graphene-modified NiCo2O4–NiO catalysts towards oxygen reduction reaction (ORR) was gauged. Linear sweep voltammetry attests that NiCo2O4–NiO (NCO) catalyst, obtained by a facile synthesis route based on a self-assembling co-templated by diethanolamine (DEA) and tripropylamine (TPA), shows conspicuous catalytic activity towards ORR. The catalytic activity
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Oxygen Reduction Reaction on Metal and Nitrogen–Doped Carbon Electrocatalysts in the Presence of Sodium Borohydride Electrocatalysis (IF 2.587) Pub Date : 2020-05-16 Ricardo Sgarbi, Edson A. Ticianelli, Frédéric Maillard, Frédéric Jaouen, Marian Chatenet
Metal and nitrogen–doped carbon electrocatalysts (M–N–C, where M is Fe or Co) were investigated for the oxygen reduction reaction (ORR) in alkaline conditions in the presence of borohydride ions (BH4−). The electrochemical properties of the Fe–N–C and Co–N–C catalysts were investigated by cyclic voltammetry and rotating disk electrode techniques: their ORR electrocatalytic activity was bridged to their
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Electrochemical Synthesis of Tailor-Made Hydrocarbons from Organic Solvent Free Aqueous Fatty Acid Mixtures in a Micro Flow Reactor Electrocatalysis (IF 2.587) Pub Date : 2020-05-15 Athanassios Ziogas, Helmut Pennemann, Gunther Kolb
The process described in the current paper is an alternative route that allows running the Kolbe electrolysis under economically attractive conditions and thus bringing it closer to an industrial application through novel process conditions, novel reactor technology, and the utilization of low-cost excess renewable electricity. The process allows the conversion of fatty acids into hydrocarbons in aqueous
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Nicotinamide as a Catalyst for Zn 2+ Electroreduction in Acetate Buffer Electrocatalysis (IF 2.587) Pub Date : 2020-05-12 Jolanta Nieszporek
The paper presents the catalytic influence of nicotinamide on Zn2+ electroreduction. Changes in differential capacitance curves of the double layer Hg/acetate buffer pH = 6.0 as well as changes in zero charge potential values indicate nicotinamide adsorption with the aromatic ring on the electrode surface. This adsorption is responsible for its catalytic influence on the kinetics of Zn2+ ion electroreduction
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Synthesis and Application of MnO 2 /Exfoliated Graphite Electrodes for Enhanced Photoelectrochemical Degradation of Methylene Blue and Congo Red Dyes in Water Electrocatalysis (IF 2.587) Pub Date : 2020-05-08 Onoyivwe Monday Ama, Khotso Khoele, William Wilson Anku, Suprakas Sinha Ray, Peter Ogbemudia Osifo, David Jacobus Delport
Exfoliated graphite (EG), manganese dioxide (MnO2), and EG/MnO2-based electrodes were used in this work for the degradation of organic pollutants in wastewater under visible light irradiation. Methylene blue and Congo red dyes were used for the degradation. The synthesis of the nanocomposite electrodes was carried out through the co-precipitation technique. The electrodes were engaged for degradation
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Study of the Formic Acid Electrooxidation on Rhodium on Steady State Using a Flow Cell: Potential Dependence of the CO Coverage Electrocatalysis (IF 2.587) Pub Date : 2020-04-12 Gisela C. Luque, María A. Montero, María R. Gennero de Chialvo, Abel C. Chialvo
The HCOOH electrooxidation reaction (FAO) was experimentally studied on rhodium electrode using a flow cell in a 0.5-M HCOOH + 0.5-M H2SO4 solution. It was obtained the steady-state current-potential curve by chronoamperometry, which demonstrated that the FAO is verified in the potential region 0.45 < E/V < 0.70. The amount of adsorbed CO on the electrode surface as a function of potential was quantified
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High-Throughput Calculation Investigations on the Electrocatalytic Activity of Codoped Single Metal–Nitrogen Embedded in Graphene for ORR Mechanism Electrocatalysis (IF 2.587) Pub Date : 2020-03-29 Yi Xiao, Weibin Zhang
Two types of single metal atoms embedded in graphene were investigated as a potential electrocatalyst for oxygen reduction reaction (ORR) for the application in a fuel cell. ORR was considered in the four elementary reaction steps of oxygen hydrogenation, perhydroxyl production, atomic oxygen hydrogenation, and final water form. All calculations of catalytic activity were performed with the Vienna
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PVP Functionalized Marigold-like MoS 2 as a New Electrocatalyst for Highly Efficient Electrochemical Hydrogen Evolution Electrocatalysis (IF 2.587) Pub Date : 2020-03-21 Weili Wang, Bingqing Qiu, Chenxi Li, Xiaqiang Shen, Jing Tang, Yi Li, Guokun Liu
Molybdenum disulfide is regarded as the inheritor of Pt-based catalysts for the hydrogen evolution reaction (HER), arising from low-cost and abundant resource. However, the electrocatalytic efficiency of MoS2 is much lower than that of Pt-based catalysts, as a result of lacking edge active sites, poor activity of basal plane, and deficient conductivity. Herein, by introducing nanoflower-like MoS2 with
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Polysulfone Hydrogel Nanocomposite Alkaline Phosphatase Biosensor for the Detection of Vanadium Electrocatalysis (IF 2.587) Pub Date : 2020-03-21 Francis N. Muya, Priscilla G. L. Baker, Emmanuel I. Iwuoha
Several biosensors based on the immobilization of alkaline phosphatase (ALP) at different transducers have been reported in literature. In this work, a gold electrode covalently modified with a hydrogel (Au-HGL) was used as a platform for the immobilization of ALP enzyme to produce Au-HGL/ALP biosensor. The biosensor construction was evaluated by Raman spectroscopy, cyclic voltammetry (CV), and atomic
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Surface Sensitivity of Hydrogen Evolution and Formaldehyde Reduction on Differently Oriented TiO 2 Anatase Nanocrystals Electrocatalysis (IF 2.587) Pub Date : 2020-03-19 Vladislav Buravets, Kateřina Minhová Macounová, Roman Nebel, Markéta Zukalová, Ladislav Kavan, Petr Krtil
Selectivity of nanocrystalline anatase electrodes with different preferential surface orientation in formaldehyde reduction was assessed as a model of oxide-based catalyst for electrochemical CO2 valuation. Cathodic behavior of TiO2 (anatase)-based electrodes observed in formaldehyde reaction integrates, in fact, several processes including hydrogen evolution, formaldehyde reduction, and proton insertion
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Correction to: Electrochemical Impedance Spectroscopy Characterization of Silicon-Based Electrodes for Li-Ion Batteries Electrocatalysis (IF 2.587) Pub Date : 2020-03-14 Maciej Ratynski, Bartosz Hamankiewicz, Michał Krajewski, Maciej Boczar, Dominika A. Buchberger, Andrzej Czerwinski
There was a typo in author name. The correct author name should be: Bartosz Hamankiewicz.
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Confining Iron Carbide Growth in Porous Carbon to Improve the Electrocatalytic Performance for Oxygen Reduction Reaction Electrocatalysis (IF 2.587) Pub Date : 2020-03-14 E. Jin, Yan Yang, Lili Cui
The Fe and N co-functionalized catalyst is controllably synthesized by three-step strategy. Prussian blue (PB) and poly 2,6-diaminopyridine (PDAP) are preferentially selected to synthesize a core-shell structure attributed to their advantageous properties. Under pyrolysis process, carbonized PDAP serves as a block layer to prevent Fe-based nanoparticles from aggregation and increase the content of
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Hydrogen Evolution Reaction on Iridium-Modified Nickel Foam Surfaces Electrocatalysis (IF 2.587) Pub Date : 2020-03-08 Mateusz Luba, Tomasz Mikolajczyk, Boguslaw Pierozynski
This work reports on cathodic hydrogen evolution reaction (HER), studied on Ir-activated nickel foam materials, prepared through spontaneous and electrodeposition methods (examined in 0.1 M NaOH electrolyte). Both Ir modifications of Ni foam caused substantial improvement of the HER kinetics, as compared with those recorded for as-received and surface-activated nickel foam materials. Electrochemical
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Electrocatalysis of Hydrogen Peroxide Generation Using Oxygen-Fed Gas Diffusion Electrodes Made of Carbon Black Modified with Quinone Compounds Electrocatalysis (IF 2.587) Pub Date : 2020-03-02 Robson S. Rocha, Ricardo B. Valim, Leandro C. Trevelin, Juliana R. Steter, Jussara F. Carneiro, Juliane C. Forti, Rodnei Bertazzoli, Marcos R. V. Lanza
Hydrogen peroxide (H2O2) is one of the most popular and widely used oxidants. Among the wide range of synthesis techniques used for the production of H2O2; the electrochemical method allows the use of gas diffusion electrodes to generate H2O2 without limiting the low solubility of O2 in water. The present work reports the modification of carbon black with quinone, where the generation of H2O2 occurs
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Correlation between Precursor Properties and Performance in the Oxygen Reduction Reaction of Pt and Co “Core-shell” Carbon Nitride-Based Electrocatalysts Electrocatalysis (IF 2.587) Pub Date : 2019-11-21 Vito Di Noto, Enrico Negro, Angeloclaudio Nale, Pawel J. Kulesza, Iwona A. Rutkowska, Keti Vezzù, Gioele Pagot
This report shows the synthesis of a new family of “core-shell” carbon nitride (CN)-based electrocatalysts (ECs) for the oxygen reduction reaction (ORR) in acid medium. The ECs comprise “cores” of carbon black nanoparticles (NPs) that are covered by a CN “shell” embedding the active sites. The latter include Pt as the “active metal” and Co as the “co-catalyst.” The interplay between the synthesis parameters
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Efficient Photoelectrocatalytic Degradation of BTEX Using TiO 2 /CuO/Cu 2 O Nanorod-Array Film as the Photoanode and MWCNT/GO/Graphite Felt as the Photocathode Electrocatalysis (IF 2.587) Pub Date : 2020-01-02 Danial Safarvand, Iraj Naser, Mohammad Samipourgiri, Mehdi Arjmand
Wastewater treatment challenges by conventional methods have necessitated the need for alternative/complementary methods that are environmentally safe and efficient especially towards recalcitrant organic pollutants. In this regard, a novel highly active visible-light responsive photoanode with the ternary hybrid CuO/Cu2O/TiO2 nanorods array film is proposed to enhance electron transfer in the photoelectrocatalytic
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The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems Electrocatalysis (IF 2.587) Pub Date : 2020-01-10 Katarzyna Hubkowska, Suwaphid Themsirimongkon, Surin Saipanya, Mariusz Łukaszewski, Andrzej Czerwiński
Pd-rich Pd-Pt-Ru alloys, obtained by electrodeposition, were characterized by microscopic and electrochemical techniques at room temperature (298 K). The influence of the electrode potential and bulk composition on the amount of electrosorbed hydrogen was studied in 0.5 M H2SO4 aqueous solutions and compared with the behavior of Pd-Rh-Ru alloys under identical experimental conditions. The maximum hydrogen
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An Aqueous Phase TEMPO-Mediated Electrooxidation of Benzyl Alcohol at β-CD-PPy-Modified Carbon Fibre Paper Electrode Electrocatalysis (IF 2.587) Pub Date : 2020-01-07 Krithika Ganesh, K. B. Akshaya, Anitha Varghese, Agnus T. Mathew
A green and facile electrocatalytic method for the oxidation of benzyl alcohol in an acidic aqueous medium was developed using an anionic micellar system. β-cyclodextrin-polypyrrole-modified carbon fibre paper (β-CD-PPy/CFP) electrode was successfully used in the oxidation of benzyl alcohol with TEMPO as the mediator. The modified electrode was characterized by cyclic voltammetry (CV), electrochemical
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On the Influence of the Extent of Oxidation on the Kinetics of the Hydrogen Electrode Reactions on Polycrystalline Nickel Electrocatalysis (IF 2.587) Pub Date : 2019-11-12 Alexandr G. Oshchepkov, Antoine Bonnefont, Elena R. Savinova
The influence of the extent of oxidation of Ni electrodes on the kinetics of the hydrogen oxidation (HOR) and evolution (HER) reactions has been explored by combining an experimental cyclic voltammetry and chronoamperometry study with microkinetic modeling. The HOR/HER specific activity of the Ni/NiOx electrodes follows a volcano-type dependence with a maximum at 30% NiOx coverage corresponding to
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Cobalt-Nickel Wrapped Hydroxyapatite Carbon Nanotubes as a New Catalyst in Oxygen Evolution Reaction in Alkaline Media Electrocatalysis (IF 2.587) Pub Date : 2020-01-07 Afsaneh Safavi, Ali Mohammadi, Mohsen Sorouri
Introducing an inexpensive non-noble metal electrocatalyst is an ongoing challenge in oxygen evolution reaction (OER). Here, a bimetallic cobalt-nickel-based catalyst is introduced by metal loading over hydroxyapatite multiwalled carbon nanotube substrate (Co-Ni/HA-MWCNTs). The proposed catalyst is promising and inexpensive and could be favorably applied in water electrolyzing systems. The HA-MWCNTs
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Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method Electrocatalysis (IF 2.587) Pub Date : 2020-01-03 Bernd Cermenek, Boštjan Genorio, Thomas Winter, Sigrid Wolf, Justin G. Connell, Michaela Roschger, Ilse Letofsky-Papst, Norbert Kienzl, Brigitte Bitschnau, Viktor Hacker
Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order
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Electrochemical Energy Conversion from Direct Oxidation of Glucose on Active Electrode Materials Electrocatalysis (IF 2.587) Pub Date : 2019-11-28 Charly Lemoine, Lionel Dubois, Teko W. Napporn, Karine Servat, Kouakou B. Kokoh
Electrochemical behavior of carbon-supported platinum and gold-based catalysts towards glucose oxidation and oxygen reduction reaction were investigated separately in alkaline medium before implementing the glucose/O2 fuel cell with the best anode and cathode catalysts. These electrode materials, prepared from a surfactant-free synthesis approach, were then used in low metal loadings in a fuel cell
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Electrochemical Characterization of Low-Temperature Direct Ethanol Fuel Cells using Direct and Alternate Current Methods Electrocatalysis (IF 2.587) Pub Date : 2019-10-26 Paweł Wnuk, Rafał Jurczakowski, Adam Lewera
Here, we report for the first time the results of systematic characterization of a low-temperature polymer electrolyte membrane direct ethanol fuel cell using DC and AC electrochemical methods. Model catalysts (carbon supported Pt nanoparticles) painted on carbon paper are used as anode and cathode. Influence of physical parameters, such as cell temperature, current density, and ethanol concentration
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Photoinduced K + Intercalation into MoO 3 /FTO Photoanode—the Impact on the Photoelectrochemical Performance Electrocatalysis (IF 2.587) Pub Date : 2019-10-25 M. Szkoda, K. Trzciński, M. Łapiński, A. Lisowska-Oleksiak
In this work, thin layers of MoO3 were tested as potential photoanodes for water splitting. The influence of photointercalation of alkali metal cation (K+) into the MoO3 structure on the photoelectrochemical properties of the molybdenum trioxide films was investigated for the first time. MoO3 thin films were synthesized via thermal annealing of thin, metallic Mo films deposited onto the FTO substrate
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Enhanced Photoelectrocatalytical Performance of Inorganic-Inorganic Hybrid Consisting BiVO 4 , V 2 O 5 , and Cobalt Hexacyanocobaltate as a Perspective Photoanode for Water Splitting Electrocatalysis (IF 2.587) Pub Date : 2019-12-10 K. Trzciński, M. Szkoda, M. Sawczak, A. Lisowska-Oleksiak
Thin layers of BiVO4/V2O5 were prepared on FTO substrates using pulsed laser deposition technique. The method of cobalt hexacyanocobaltate (Cohcc) synthesis on the BiVO4/V2O5 photoanodes consists of cobalt deposition followed by electrochemical oxidation of metallic Co in K3[Co(CN)6] aqueous electrolyte. The modified electrodes were tested as photoanodes for water oxidation under simulated sunlight
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Structure, Morphology, and Electrochemical Properties of Carbon-Coated Lithium-Manganese Orthosilicate with Sucrose as a Carbon Source Electrocatalysis (IF 2.587) Pub Date : 2020-02-25 Maciej Boczar, Michal Krajewski, Bartosz Hamankiewicz, Maciej Ratynski, Dominika Buchberger, Andrzej Czerwinski
Lithium-manganese orthosilicate powders were synthesized via a modified solvothermal method. Three different weight ratios of sucrose used as a carbon source were investigated for finding an effective carbon coating process. Synthesized materials were analyzed by structural and morphological (X-ray powder diffraction, scanning electron microscopy, N2 adsorption/desorption, thermogravimetry analysis)
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Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside Electrocatalysis (IF 2.587) Pub Date : 2020-02-22 N. Neha, B. S. R. Kouamé, T. Rafaïdeen, S. Baranton, C. Coutanceau
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