Designing covalent organic frameworks with Co-O4 atomic sites for efficient CO2 photoreduction
Henan Normal University · National University of Singapore · +2 more institutions
Abstract
Abstract Cobalt coordinated covalent organic frameworks have attracted increasing interest in the field of CO 2 photoreduction to CO, owing to their high electron affinity and predesigned structures. However, achieving high conversion efficiency is challenging since most Co related coordination environments facilitate fast recombination of photogenerated electron-hole pairs. Here, we design two kinds of Co-COF catalysts with oxygen coordinated Co atoms and find that after tuning of coordination environment, the reported Co framework catalyst with Co-O 4 sites exhibits a high CO production rate of 18000 µmol g −1 h −1 with selectivity as high as 95.7% under visible light irradiation. From in/ex-situ spectral…
Citation impact
- FWCI
- 28.50
- Percentile
- 100%
- References
- 65
Authors
9Topics & keywords
- Catalysis
- Covalent bond
- Cobalt
- Materials science
- Photochemistry
- Photocatalysis
- Oxygen
- Selectivity