CH-π interaction boosts photocatalytic CO2 reduction activity of a molecular cobalt catalyst anchored on carbon nitride

Autor: Jia-Wei Wang, Marcos Gil-Sepulcre, Hai-Hua Huang, Eduardo Solano, Yan-Fei Mu, Antoni Llobet, Gangfeng Ouyang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Cell Reports Physical Science, Vol 2, Iss 12, Pp 100681- (2021)
Druh dokumentu: article
ISSN: 2666-3864
DOI: 10.1016/j.xcrp.2021.100681
Popis: Summary: The construction of efficient noble-metal-free systems for visible-light-driven CO2 reduction still remains a key challenge. Here, we report an efficient molecular hybrid system composed of a Co-PYN5 catalyst that contains a pyrene functionality that anchors on g-C3N4 dye surface via CH-π interactions. This hybrid material achieves high turnover numbers (TONs) and turnover frequencies (TOFs) for visible light reduction of CO2 to CO of 533 and 95 h−1 that are within the best reported up to now. The improved performance is rationalized in terms of the electronic coupling that takes place with the π system of the pyrene group with both the g-C3N4 surface and the Co-pyridyl moiety of the catalysts.
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