Selective photocatalytic CO2 reduction by cobalt dicyanamide

Date
2022-07-29
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Source Title
Dalton Transactions
Print ISSN
Electronic ISSN
1477-9234
Publisher
Royal Society of Chemistry
Volume
33
Issue
51
Pages
12569 - 12575
Language
English
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Abstract

Photocatalytic conversion of CO2 into chemical fuels is a promising approach to tackle carbon emission and global warming. Herein, we promote a cobalt dicyanamide coordination compound, Co-dca, for the first time, as a selective catalyst to reduce CO2 to CO in the presence of a ruthenium photosensitizer (Ru PS) under visible light irradiation. Co-dca was prepared by a facile precipitation method and characterized by Infrared, UV-Vis, XRD, SEM, TEM, and XPS studies. A series of photocatalytic experiments under various reaction conditions were performed to reveal the role of the PS, the scavenger, and the solvent in the selectivity and the activity of the photocatalytic process. We find that Co-dca exhibits an activity of 254 μmol h−1 g−1 and a CO selectivity as high as 93%.

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