Reverse Semi‐Combustion Driven by Titanium Dioxide‐Ionic Liquid Hybrid Photocatalyst

0532040 - ÚFCH JH 2021 RIV DE eng J - Journal Article
Qadir, Muhammad Irfan - Zanatta, M. - Pinto, J. - Vicente, I. - Gual, A. - Smith, E. F. - Neto, B. A. D. - de Souza, P. E. N. - Khan, S. - Dupont, J. - Fernandes, J. A.
Reverse Semi‐Combustion Driven by Titanium Dioxide‐Ionic Liquid Hybrid Photocatalyst.
ChemSusChem. Roč. 13, č. 20 (2020), s. 5580-5585. ISSN 1864-5631. E-ISSN 1864-564X
EU Projects: European Commission(XE) 810310
Institutional support: RVO:61388955
Keywords : carbon dioxide * carbon monoxide * ionic liquids
OECD category: Physical chemistry
Impact factor: 8.928, year: 2020
Method of publishing: Open access

Unprecedented metal-free photocatalytic CO(2)conversion to CO (up to 228 +/- 48 mu mol 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 TiO(2)absorption, and thus a modification of the TiO(2)surface electronic structure, (ii) TiO(2)with IL bearing imidazolate anions lowered the CO(2)activation energy barrier. The reaction mechanism was postulated to occur via CO(2)photoreduction to formate species by the imidazole/imidazole radical redox pair, yielding CO and water.
Permanent Link: http://hdl.handle.net/11104/0310653