期刊
ACS CATALYSIS
卷 11, 期 17, 页码 11103-11108出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c02556
关键词
bimetallic Cu-Sn catalyst; composition; CO2 reduction; formate; CO; selectivity
资金
- King Abdullah University of Science and Technology
Cu-Sn composite catalysts can be designed to selectively produce formate or CO by varying the Cu/Sn composition, thanks to the critical existence of small amounts of Cu or Sn single atoms in the catalysts.
Production of formate or CO from electrochemical CO2 reduction reactions (eCO(2)RRs) represents a promising way to utilize CO2 with future low-carbon electricity to produce value-added chemicals and fuels. Herein, a series of Cu-Sn composite catalysts were designed for eCO(2)RRs. The reduction products could be tuned selectively from formate to CO by varying the Cu/Sn composition. The catalyst Cu1Sn1 with a CuSn alloy core and a SnO shell structure doped with a small amount of Cu gives a maximum faradic efficiency (FE) of 95.4 for formate at -1.2 V. In contrast, the single-Sn-atom-doped Cu of Cu20Sn1 is selective to CO with a maximum FE of 95.3% at -1.0 V. The DFT results reveal that the existence of small amounts of Cu or Sn single atoms in these two catalysts is critical to reducing the reaction free energies of CO2 reduction, resulting in the selective formation of formate and CO, respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据