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Visible-Light-Driven CO₂ Reduction by Mesoporous Carbon Nitride Modified with Polymeric Cobalt Phthalocyanine.

ABSTRACT: The integration of molecular catalysts with low-cost, solid light absorbers presents a promising strategy to construct catalysts for the generation of solar fuels. Here, we report a photocatalyst for CO₂ reduction that consists of a polymeric cobalt phthalocyanine catalyst (CoPPc) coupled with mesoporous carbon nitride (mpg-CN_x ) as the photosensitizer. This precious-metal-free hybrid catalyst selectively converts CO₂ to CO in organic solvents under UV/Vis light (AM 1.5G, 100?mW?cm^-2 , ?>300?nm) with a cobalt-based turnover number of 90 for CO after 60?h. Notably, the photocatalyst retains 60?% CO evolution activity under visible light irradiation (?>400?nm) and displays moderate water tolerance. The in situ polymerization of the phthalocyanine allows control of catalyst loading and is key for achieving photocatalytic CO₂ conversion.

SUBMITTER: Roy S

PROVIDER: S-EPMC6771752 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Visible-Light-Driven CO2 Reduction by Mesoporous Carbon Nitride Modified with Polymeric Cobalt Phthalocyanine.

Roy Souvik S Reisner Erwin E

Angewandte Chemie (International ed. in English) 20190730 35

The integration of molecular catalysts with low-cost, solid light absorbers presents a promising strategy to construct catalysts for the generation of solar fuels. Here, we report a photocatalyst for CO2 reduction that consists of a polymeric cobalt phthalocyanine catalyst (CoPPc) coupled with mesoporous carbon nitride (mpg-CNx ) as the photosensitizer. This precious-metal-free hybrid catalyst selectively converts CO2 to CO in organic solvents under UV/Vis light ...[more]

PMID: 31273886

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