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Updated: Oct 14, 2025

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
Published on: June 12, 2019
Highly Durable and Fully Dispersed Cobalt Diatomic Site Catalysts for CO2 Photoreduction to CH4
Jinming Wang1, Eunhyo Kim1, Dharani Praveen Kumar1
1Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea.
Abstract:
Dual-atom-site catalysts (DACs) have emerged as a new frontier in heterogeneous catalysis because the synergistic effect between adjacent metal atoms can promote their catalytic activity while maintaining the advantages of single-atom-site catalysts, such as almost 100 % atomic efficiency and excellent hydrocarbon selectivity. In this study, cobalt-based atom site catalysts with a Co2 -N coordination structure were synthesized and used for photodriven CO2 reduction. The resulting CoDAC containing 3.5 % Co atoms demonstrated a superior atom ratio for CO2 reduction catalytic performance, with 65.0 % CH4 selectivity, which far exceeds that of cobalt-based single-atom-site catalysts (CoSACs). The intrinsic reason for the superior activity of CoDACs is the excellent adsorption strength of CO2 and CO* intermediates at dimeric Co active sites.
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