@article{Liu2023, 
author = {Wei Liu and Haoqiang Li and Pengfei Ou and Jing Mao and Lili Han and Jun Song and Jun Luo and Huolin L. Xin},
title = {Isolated Cu-Sn diatomic sites for enhanced electroreduction of CO2 to CO},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {8729-8736},
keywords = {density functional theory (DFT) calculation, CO2 reduction reaction, Cu-Sn active site, CO product, dual-atom electrocatalyst},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5513-5},
doi = {10.1007/s12274-023-5513-5},
abstract = {Electrochemical CO2 reduction reaction (CO2RR) to high-value product, CO, not only provides a key feedstock for the well-established Fischer–Tropsch process but also mitigates the greenhouse effect. However, it suffers from sluggish reaction kinetics, competitive hydrogen evolution reaction, and low selectivity. Herein, we report non-precious Cu-Sn diatomic sites anchored on nitrogen-doped porous carbon (CuSn/NPC) as an efficient catalyst for CO2RR to CO. The catalyst exhibits outstanding selectivity with CO Faradaic efficiency (FE) up to 99.1%, much higher than those of individual Cu (66.2%) and Sn (51.3%) single-atom catalysts. Moreover, high stability is confirmed by consecutive 24 h electrolysis with high selectivity from CO2 to CO. Theoretical calculations reveal an obvious activation of CO2 with weakened C–O bonds and distorted CO2 configuration upon chemisorption on the CuSn/NPC catalyst. It is also suggested CuSn/NPC is more selective for the CO2RR with dominant CO production during the electrolysis, rather than the competing hydrogen evolution reaction.}
}