文献类型：期刊文献

英文题名：Engineering Surface Oxophilicity of Copper for Electrochemical CO2 Reduction to Ethanol

作者：Li, Minhan[1,2];Song, Nan[1,3];Luo, Wei[1];Chen, Jun[1,4];Jiang, Wan[1];Yang, Jianping[1]

机构：[1]Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China;[2]Zhengzhou Univ, Coll Mat Sci & Engn, Zhengzhou 450001, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]Univ Wollongong, Intelligent Polymer Res Inst, Australian Inst Innovat Mat, ARC Ctr Excellence Electromat Sci, Innovat Campus, Wollongong, NSW 2522, Australia

年份：2023

卷号：10

期号：2

外文期刊名：ADVANCED SCIENCE

收录：;EI(收录号：20224713147536);WOS:【SCI-EXPANDED(收录号:WOS:000888394700001)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (Nos. 52122312 and 22202183), the Fundamental Research Funds for the Central Universities (2232021A-02), Shanghai Committee of Science and Technology, China (No. 21ZR1480000), and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University.

语种：英文

外文关键词：C2H5OH pathway; CO2RR; Cu-Sn bimetallic catalyst; reaction mechanism; surface oxophilicity

摘要：Copper-based materials are known for converting CO2 into deep reduction products via electrochemical reduction reaction (CO2RR). As the major multicarbon products (C2+), ethanol (C2H5OH) and ethylene (C2H4) are believed to share a common oxygenic intermediate according to theoretical studies, while the key factors that bifurcate C2H5OH and C2H4 pathways on Cu-based catalysts are not fully understood. Here, a surface oxophilicity regulation strategy to enhance C2H5OH production in CO2RR is proposed, demonstrated by a Cu-Sn bimetallic system. Compared with bare Cu catalyst, the Cu-Sn bimetallic catalysts show improved C2H5OH but suppressed C2H4 selectivity. The experimental results and theoretical calculations demonstrate that the surface oxophilicity of Cu-Sn catalysts plays an important role in steering the protonation of the key oxygenic intermediate and guides the reaction pathways to C2H5OH. This study provides new insights into the electrocatalyst design for enhanced production of oxygenic products from CO2RR by engineering the surface oxophilicity of copper-based catalysts.