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.
|Journal||Angewandte Chemie - International Edition|
|Publication status||Published - 2022 Feb 1|
Bibliographical noteFunding Information:
This research was supported by National Research Foundation of Korea (NRF) grants funded by the Ministry of Science and ICT [grant numbers 2016K1A4A4A01922028 and 2020R1A4A1017737].
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