文献类型：期刊文献

英文题名：Insights into Bimetallic Ag2Cu2O3 Precatalyst for Electrochemical CO2 Reduction to Ethanol

作者：Wang, Huan[1];Liu, Yuan Wei[1];Li, Xin Yan[1];Xu, Yi Ning[1];Xu, Xiaolei[2];He, Jing Jing[2];Niu, Qiang[2];Liu, Peng Fei[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat ,Minist Educ, Shanghai 200237, Peoples R China;[2]Inner Mongolia Erdos Elect Power & Met Grp Co Ltd, Natl Enterprise Technol Ctr, Ordos 016064, Inner Mongolia, Peoples R China

年份：2024

卷号：16

期号：23

外文期刊名：CHEMCATCHEM

收录：;EI(收录号：20244317263597);WOS:【SCI-EXPANDED(收录号:WOS:001341015900001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22379043 and 51920105003), the Shanghai Pilot Program for Basic Research (22TQ1400100-12), the Science and Technology Commission of Shanghai Municipality (21DZ1207101 and 22ZR1416400), and the Fundamental Research Funds for the Central Universities. The authors also thank the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF) and the 1W1B beamline of Beijing Synchrotron Radiation Facility (BSRF) for their constructive assistance with the XAFS measurements and data analyses.

语种：英文

外文关键词：CO2 reduction reaction; Electrocatalysis; Cu-based catalyst; Precatalyst; Alcohol products

摘要：The electrochemical CO2 reduction reaction (CO2RR) into valuable chemicals represents an effective approach for realizing carbon neutralization goals. Copper oxide-derived catalysts are particularly promising due to their tunable electronic structures. In this study, we focused on investigating the Ag2Cu2O3 model catalyst and a mixture of CuO and Ag2O with an identical metal molar ratio (denoted an as M-CuAgO). Electrochemical CO2RR tests revealed that Ag2Cu2O3 exhibited selectivity towards ethanol, while M-CuAgO showed no selectivity towards multi-carbon products. Characterizations of the post-reaction materials showed differences in the specific crystal structures of the two catalysts. Further X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the Ag2Cu2O3 structure, after the reaction, facilitated the transfer of electrons from Cu to Ag, thereby promoting the formation of multi-carbon products. This work underscores the significance of structural design in precatalysts and opens up new avenues for the design of high-performance catalysts.