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.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|
Loading...