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Qian Y, Xiao Y, Qin T, Zhang F, Tang H, Liu Y, Lin B. Investigating the Formation Mechanism of a Nanoporous Silver Film Electrode with Enhanced Catalytic Activity for CO
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Electroreduction. ChemElectroChem 2020. [DOI: 10.1002/celc.202001222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yao Qian
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Yanjun Xiao
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Tian Qin
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Fan Zhang
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Hehua Tang
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Yifan Liu
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Bo‐Lin Lin
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
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Fan T, Wu Q, Yang Z, Song Y, Zhang J, Huang P, Chen Z, Dong Y, Fang W, Yi X. Electrochemically Driven Formation of Sponge-Like Porous Silver Nanocubes Toward Efficient CO 2 Electroreduction to CO. CHEMSUSCHEM 2020; 13:2677-2683. [PMID: 32020717 DOI: 10.1002/cssc.201903558] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Electrochemical conversion of CO2 into valuable products by utilizing renewable electricity is a thriving research field. For electrochemical reduction of CO2 to CO, uniform sponge-like porous Ag nanocubes (SPC-Ag) integrated on carbon paper are prepared by using an electrochemically driven method. The SPC-Ag has a 3 D porous structure and a large specific surface area, which affords abundant active sites for the CO2 reduction reaction (CO2 RR), as well as reducing impedance to accelerate the CO2 RR kinetics. This distinctive organization affords SPC-Ag with outstanding electrocatalytic performance for CO2 reduction to CO. High faradaic efficiency (>90 %) and large partial current density for CO with excellent durability are observed in a wide potential window, with a maximum value of 93 % at -0.9 V versus reversible hydrogen electrode.
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Affiliation(s)
- Tingting Fan
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Qiuling Wu
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Zhou Yang
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Yipeng Song
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Jiguang Zhang
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Pingping Huang
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Zhou Chen
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Yunyun Dong
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Weiping Fang
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xiaodong Yi
- National Engineering Laboratory for Green Chemical Productions of, Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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Ashok A, Kumar A, Matin MA, Tarlochan F. Synthesis of Highly Efficient Bifunctional Ag/Co 3O 4 Catalyst for Oxygen Reduction and Oxygen Evolution Reactions in Alkaline Medium. ACS OMEGA 2018; 3:7745-7756. [PMID: 31458922 PMCID: PMC6644694 DOI: 10.1021/acsomega.8b00799] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 06/28/2018] [Indexed: 06/10/2023]
Abstract
Ag/Co3O4 catalysts using three different modes of solution combustion synthesis were developed and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy to identify crystallite size, oxidation state, composition, and morphology. Cyclic voltammetry and linear sweep voltammetry measurements for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) confirm the bifunctionality of the electrocatalysts. The electrochemical evaluation indicates that a synergic effect between Ag and Co enhances the activity through the fast breaking of O-O bond in the molecular oxygen to enhance the reduction mechanism. The high content of cobalt (Co) in the catalyst Ag/Co3O4-12, synthesized by second wave combustion, improves the activity for ORR, and the reaction mechanism follows a 3.9 number of electron transfer in overall reaction. The kinetic and limiting current densities of Ag/Co3O4-12 are maximum when compared to those of other Ag/Co3O4 catalysts and are very close to commercial Pt/C. Moreover, the maximum current density of OER for Ag/Co3O4-12 makes it a promising candidate for various bifunctional electrocatalytic applications such as fuel cells and metal-air batteries.
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Affiliation(s)
- Anchu Ashok
- Department of Mechanical and Industrial Engineering and Department of
Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Anand Kumar
- Department of Mechanical and Industrial Engineering and Department of
Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Md Abdul Matin
- Department of Mechanical and Industrial Engineering and Department of
Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Faris Tarlochan
- Department of Mechanical and Industrial Engineering and Department of
Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
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Qiu W, Liang R, Luo Y, Cui G, Qiu J, Sun X. A Br− anion adsorbed porous Ag nanowire film: in situ electrochemical preparation and application toward efficient CO2 electroreduction to CO with high selectivity. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00500a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An AgBr-derived porous Ag nanowire film with adsorbed Br− anions shows a low onset overpotential of only 296 mV and a high CO faradaic efficiency of 96.2% at −0.6 V in CO2-saturated 0.5 M KHCO3.
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Affiliation(s)
- Weibin Qiu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
- Institute of Fundamental and Frontier Sciences
| | - Ruping Liang
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Yonglan Luo
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Guangwei Cui
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan 250014
- China
| | - Jianding Qiu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
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