A Fully Noble Metal-Free Photosystem Based on Cobalt- Polyoxometalates Immobilized in a Porphyrinic Metal- Organic-Framework for Water Oxidation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the American Chemical Society Année : 2018

A Fully Noble Metal-Free Photosystem Based on Cobalt- Polyoxometalates Immobilized in a Porphyrinic Metal- Organic-Framework for Water Oxidation

Résumé

The sandwich-type polyoxometalate (POM) [(PW 9 O 34) 2 Co 4 (H 2 O) 2 ] 10-was immobilized in the hexagonal channels of the Zr(IV) porphyrinic MOF-545 hybrid framework. The resulting composite was fully characterized by a panel of physicochemical techniques. Calculations allowed identifying the localization of the POM in the vicinity of the Zr 6 clusters and porphyrin linkers constituting the MOF. The material exhibits a high photocatalytic activity and good stability for visible-light-driven water oxidation. It thus represents a rare example of an all-in-one fully noble metal-free supramolecular heterogeneous photocatalytic system, with the catalyst and the photosensitizer within the same porous solid material.
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Dates et versions

hal-02081087 , version 1 (27-03-2019)

Identifiants

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Grégoire Paille, Maria Gomez-Mingot, Catherine Roch-Marchal, Benedikt Lassalle-Kaiser, Pierre Mialane, et al.. A Fully Noble Metal-Free Photosystem Based on Cobalt- Polyoxometalates Immobilized in a Porphyrinic Metal- Organic-Framework for Water Oxidation. Journal of the American Chemical Society, 2018, ⟨10.1021/jacs.7b11788⟩. ⟨hal-02081087⟩
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