Highly Durable and Fully Dispersed Cobalt Diatomic Site Catalysts for CO2 Photoreduction to CH4

Jinming Wang, Eunhyo Kim, Dharani Praveen Kumar, Akkammagari Putta Rangappa, Yujin Kim, Yuexing Zhang, Tae Kyu Kim

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

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.

Original languageEnglish
Article numbere202113044
JournalAngewandte Chemie - International Edition
Volume61
Issue number6
DOIs
Publication statusPublished - 2022 Feb 1

Bibliographical note

Publisher Copyright:
© 2021 Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry

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