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Efficient Visible-Light-Driven CO 2 Reduction by a Cobalt Molecular Catalyst Covalently Linked to Mesoporous Carbon Nitride

Abstract : Achieving visible-light-driven carbon dioxide reduction with high selectivity control and durability while using only earth abundant elements requires new strategies. Hybrid catalytic material was prepared upon covalent grafting a Co–quaterpyridine molecular complex to semiconductive mesoporous graphitic carbon nitride (mpg-C3N4) through an amide linkage. The molecular material was characterized by various spectroscopic techniques, including XPS, IR, and impedance spectroscopy. It proved to be a selective catalyst for CO production in acetonitrile using a solar simulator with a high 98% selectivity, while being remarkably robust since no degradation was observed after 4 days of irradiation (ca. 500 catalytic cycles). This unique combination of a selective molecular catalyst with a simple and robust semiconductive material opens new pathways for CO2 catalytic light-driven reduction.
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Submitted on : Wednesday, September 30, 2020 - 5:48:52 PM
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Bing Ma, Gui Chen, Claire Fave, Lingjing Chen, Ryo Kuriki, et al.. Efficient Visible-Light-Driven CO 2 Reduction by a Cobalt Molecular Catalyst Covalently Linked to Mesoporous Carbon Nitride. Journal of the American Chemical Society, American Chemical Society, 2020, 142 (13), pp.6188-6195. ⟨10.1021/jacs.9b13930⟩. ⟨hal-02954112⟩

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