Issue 15, 2022

Evolution of Cu single atom catalysts to nanoclusters during CO2 reduction to CO

Abstract

We synthesized Cu single atoms embedded in a N-doped porous carbon catalyst with a high Faradaic efficiency of 93.5% at −0.50 V (vs. RHE) for CO2 reduction to CO. The evolution of Cu single-atom sites to nanoclusters of about 1 nm was observed after CO2 reduction at a potential lower than −0.30 V (vs. RHE). The DFT calculation indicates that Cu nanoclusters improve the CO2 activation and the adsorption of intermediate *COOH, thus exhibiting higher catalytic activity than CuNx sites. The structural instability observed in this study helps in understanding the actual active sites of Cu single atom catalysts for CO2 reduction.

Graphical abstract: Evolution of Cu single atom catalysts to nanoclusters during CO2 reduction to CO

Supplementary files

Article information

Article type
Communication
Submitted
20 Oct 2021
Accepted
18 Jan 2022
First published
19 Jan 2022

Chem. Commun., 2022,58, 2488-2491

Evolution of Cu single atom catalysts to nanoclusters during CO2 reduction to CO

L. Yan, X. Liang, Y. Sun, L. Xiao, B. Lu, G. Li, Y. Li, Y. Hong, L. Wan, C. Chen, J. Yang, Z. Zhou, N. Tian and S. Sun, Chem. Commun., 2022, 58, 2488 DOI: 10.1039/D1CC05910F

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