Immobilization of a Full Photosystem in the Large-Pore MIL-101 Metal-Organic Framework for CO2 reduction

X. Wang (1) , F. Wisser (2) , J. Canivet (2) , M. Fontecave (1) , C. Mellot-Draznieks (1)

1 Collège de France - Chaire Chimie des processus biologiques
2 ING - IRCELYON-Ingéniérie, du matériau au réacteur

A molecular catalyst [Cp*Rh(4,4′‐bpydc)]2+ and a molecular photosensitizer [Ru(bpy)2(4,4′‐bpydc)]2+ (bpydc=bipyridinedicarboxylic acid) were co‐immobilized into the highly porous metal–organic framework MIL‐101‐NH2(Al) upon easy postsynthetic impregnation. The Rh–Ru@MIL‐101‐NH2 composite allows the reduction of CO2 under visible light, while exhibiting remarkable selectivity with the exclusive production of formate. This Rh–Ru@MIL‐101‐NH2 solid represents the first example of MOFs functionalized with both a catalyst and a photosensitizer in a noncovalent fashion. Thanks to the coconfinement of the catalyst and photosensitizer into the cavity's nanospace, the MOF pores are used as nanoreactors and enable molecular catalysis in a heterogeneous manner.

Domaines: Catalyse; Chimie de coordination

X. Wang, F. Wisser, J. Canivet, M. Fontecave, C. Mellot-Draznieks. Immobilization of a Full Photosystem in the Large-Pore MIL-101 Metal-Organic Framework for CO2 reduction. ChemSusChem, 2018, 11 (18), pp.3315-3322. ⟨10.1002/cssc.201801066⟩. ⟨hal-01886655⟩