高等学校化学学报2024，Vol.45Issue(7)：156-165,10.DOI:10.7503/cjcu20240082
缺陷CuAg催化剂的构筑及电催化CO2还原制备C2+产物
Preparation of Defect Sites Rich CuAg Catalyst for CO2 Reduction to C2+Products
摘要
Abstract
In this paper,defect sites rich Ag/Cu-OH was obtained by electrochemical reduction of Ag/Cu(OH)2 for efficient carbon dioxide reduction reaction(CO2RR)to C2+products.The defect sites rich Ag/Cu-OH gives a superior activity than Ag/Cu-O obtained from the reduction of Ag/CuO precursor.The electrocatalytic performance of the catalyst was evaluated in the H-cell,and Ag2%/Cu-OH showed 1.5 times higher ethylene(C2H4)Faradaic efficiency(FE)and 1.3 times higher C2+Faraday efficiency than Ag2%/Cu-O.We obtained a high C2H4 FE of 56.2%on Ag2%/Cu-OH in the membrane electrode assembly(MEA)electrolyze at the high current density of 375 mA/cm2.The improved performance of Ag2%/Cu-OH can be attributed not only to the synergistic effect between Cu and Ag,but also to the presence of more low coordination Cu defect sites,which facilitate the adsorption of CO and further promote the dimerization of *CO to C2+products.关键词
二氧化碳还原反应/电催化/缺陷位点/乙烯产物/C2+产物Key words
Carbon dioxide reduction reaction(CO2RR)/Electrocatalysis/Defect site/C2H4 product/C2+product分类
化学引用本文复制引用
井慧芳,刘毅,房强,郎学磊,郝根彦,钟达忠,李晋平,赵强..缺陷CuAg催化剂的构筑及电催化CO2还原制备C2+产物[J].高等学校化学学报,2024,45(7):156-165,10.基金项目
国家自然科学基金(批准号:22308246,21975175,21878202)、中央引导地方科技发展资金项目(批准号:YDZISX20231A015)和山西省基础研究计划项目(批准号:202203021212266)资助.Supported by the National Natural Science Foundation of China(Nos.22308246,21975175,21878202),the Central Government Guides the Special Fund Projects of Local Scientific and Technological Development,China(No.YDZISX20231A015)and the Fundamental Research Program of Shanxi Province,China(No.202203021212266). （批准号:22308246,21975175,21878202）
