Visible-Light-Driven Carbon Dioxide Reduction Catalyzed by Iron Schiff-Base Complexes

Cocosila, Iulia; Solé-Daura, Albert; Gotico, Philipp; Forte, Jérémy; Li, Yun; Fontecave, Marc

doi:10.1021/acscatal.4c01639

ACS Catal.

2024

DOI: 10.1021/acscatal.4c01639

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Visible-Light-Driven Carbon Dioxide Reduction Catalyzed by Iron Schiff-Base Complexes

Iulia Cocosila,

Albert Solé-Daura,

Philipp Gotico

et al.

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Cited by 2 publications

References 40 publications

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Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Wakabayashi,

Kametani,

Tanahashi

et al. 2024

J. Am. Chem. Soc.

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Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Wakabayashi,

Kametani,

Tanahashi

et al. 2024

J. Am. Chem. Soc.

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Molecular Copper–Anthraquinone Photocatalysts for Robust Hydrogen Production

Yuan,

Ming,

Yang

et al. 2024

J. Am. Chem. Soc.

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The development of robust and inexpensive photocatalysts for H 2 production under visible light irradiation remains a significant challenge. This study presents a series of square planar copper anthraquinone complexes (R 4 N)CuL 2 (R = ethyl, L = alizarin dianion (CuAA); R = n-butyl, L = purpurin dianion (CuPP), (2hydroxyanthraquinone)formamide dianion (CuAHA)) as molecular photocatalysts to achieve high long-term stability in visible-light-driven H 2 production. These complexes are self-sensitized by the anthraquinone ligands and serve as proton reduction photocatalysts without additional photosensitizers or catalysts. Under irradiation of blue light, complex CuAA produces H 2 in a mixture of H 2 O/DMF with undiminished activity over 42 days, giving a turnover number exceeding 6800. Electrochemical and UV−vis studies are consistent with an EECC mechanism (E: electron transfer and C: protonation) in the catalytic cycle. The initial photochemical steps involve conversion of both anthraquinone ligands to hydroquinones. Further lightdriven reductions of the hydroquinones followed by two protonation steps results in formation of H 2 . Dependence of the catalytic rate on the concentration of H 2 O suggests that either the generation of a Cu II −H intermediate by protonation or heterocoupling between Cu II −H and H + to produce H 2 is the turnover-limiting step in catalysis.

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Visible-Light-Driven Carbon Dioxide Reduction Catalyzed by Iron Schiff-Base Complexes

Cited by 2 publications

References 40 publications

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Molecular Copper–Anthraquinone Photocatalysts for Robust Hydrogen Production

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Product

Resources

About

Visible-Light-Driven Carbon Dioxide Reduction Catalyzed by Iron Schiff-Base Complexes

Cited by 2 publications

References 40 publications

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO2 to Formic Acid

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO2 to Formic Acid

Molecular Copper–Anthraquinone Photocatalysts for Robust Hydrogen Production

Contact Info

Product

Resources

About

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid

Ferrocenyl PNNP Ligands-Controlled Chromium Complex-Catalyzed Photocatalytic Reduction of CO₂ to Formic Acid