Reverse Semi-Combustion Driven by Titanium Dioxide-Ionic Liquid Hybrid Photocatalyst.

ABSTRACT: Unprecedented metal-free photocatalytic CO₂ conversion to CO (up to 228±48 μmol g^-1 h^-1) was displayed by TiO₂@IL hybrid photocatalysts prepared by simple impregnation of commercially available P25-titanium dioxide with imidazolium-based ionic liquids (ILs). The high activity of TiO₂@IL hybrid photocatalysts was mainly associated to (i) TiO₂@IL red shift compared to the pure TiO₂ absorption, and thus a modification of the TiO₂ surface electronic structure; (ii) TiO₂ with IL bearing imidazolate anions lowered the CO₂ activation energy barrier. The reaction mechanism was postulated to occur via CO₂ photoreduction to formate species by the imidazole/imidazole radical redox

SUBMITTER: Qadir MI 

PROVIDER: S-EPMC7692890 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature