Immobilization of Mn(I) and Ru(II) polypyridyl complexes on TiO2 nanoparticles for selective photoreduction of CO2 to formic acid

Long Le-Quang (1) , Matthew Stanbury (1) , Sylvie Chardon-Noblat (1) , Jean-Marie Mouesca (2, 3) , Vincent Maurel (2, 3) , Jérome Chauvin (1)

1 DCM - Département de Chimie Moléculaire
2 CAMPE - Conception d’Architectures Moléculaires et Processus Electroniques
3 DIESE - Département Interfaces pour l'énergie, la Santé et l'Environnement

TiO2 nanoparticles are successively functionalized with [Mn(κ2N1,N2-ttpy)(CO)3Br] as catalyst and [Ru(bpy)3]2+ as photosensitizer to yield RuII/TiO2/MnI. Under continuous irradiation at 470 nm and in the presence of a sacrificial electron donor, this triad reduces CO2 to HCOOH (TONmax = 27) with 100% selectivity.

Mots clés: photocatalysis; CO2 reduction

Domaines: Chimie de coordination; Catalyse

Long Le-Quang, Matthew Stanbury, Sylvie Chardon-Noblat, Jean-Marie Mouesca, Vincent Maurel, et al.. Immobilization of Mn(I) and Ru(II) polypyridyl complexes on TiO2 nanoparticles for selective photoreduction of CO2 to formic acid. Chemical Communications, 2019, 55 (90), pp.13598-13601. ⟨10.1039/C9CC05129E⟩. ⟨hal-02405125⟩