Cu2O-Ag Tandem Catalysts for Selective Electrochemical Reduction of CO2 to C2 Products |
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| Authors: | Di Niu Cong Wei Zheng Lu Yanyan Fang Bo Liu Da Sun Xiaobin Hao Hongge Pan Gongming Wang |
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| Affiliation: | 1.Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, China; (D.N.); (C.W.); (Z.L.); (Y.F.); (B.L.); (D.S.);2.Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an 710021, China;3.State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The electrochemical carbon dioxide reduction reaction (CO2RR) to C2 chemicals has received great attention. Here, we report the cuprous oxide (Cu2O) nanocubes cooperated with silver (Ag) nanoparticles via the replacement reaction for a synergetic CO2RR. The Cu2O-Ag tandem catalyst exhibits an impressive Faradaic efficiency (FE) of 72.85% for C2 products with a partial current density of 243.32 mA·cm−2. The electrochemical experiments and density functional theory (DFT) calculations reveal that the introduction of Ag improves the intermediate CO concentration on the catalyst surface and meanwhile reduces the C-C coupling reaction barrier energy, which is favorable for the synthesis of C2 products. |
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| Keywords: | carbon dioxide reduction cuprous oxide silver tandem catalyst C2 products |
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