文献类型：期刊文献

英文题名：Cu@Bi nanocone induced efficient reduction of CO2 to formate with high current density

作者：Zhang, Fanghua[1];Chen, Chengzhen[1];Yan, Shenglin[1];Zhong, Juhua[2];Zhang, Bo[3];Cheng, Zhenmin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Sci, Dept Phys, Shanghai 200237, Peoples R China;[3]Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China

年份：2020

卷号：598

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20201708513499);WOS:【SCI-EXPANDED(收录号:WOS:000536133800003)】；

基金：Financial support by the National Nature Science Foundation of China (21676085) is gratefully acknowledged.

语种：英文

外文关键词：Cu@Bi nanocone; Conic tip structure; CO(2)reduction; Formate

摘要：Electrochemical conversion of CO2 into formate provides an attractive approach to store renewable energy in the form of valuable chemical products, but searching for inexpensive catalytic material that can accomplish the reduction of CO2 to formate with a high selectivity at high current densities remains a challenge. Herein, spiky Cu@Bi nanocone with a curvature radius of 10 nm were prepared through facile electrochemical coating of a thin layer of Bi over a substrate of Cu nanocone. The Cu@Bi nanocone exhibits excellent performance for CO2 reduction, achieving a high faradaic efficiency > 90 % for formate formation in the potential range from -0.75 to - 0.95 V, and gives a faradaic efficiency of 96.9 % at - 0.95 V at a current density of -31.9 mA cm(-2). The superior performance probably be attributed to the unique conic tip structure, as indicated by comparison to the structure of bulk Bi.