Optimization of cerium doping of TiO.sub.2./sub. for photocatalytic reduction of CO.sub.2./sub. and photocatalytic decomposition of N.sub.2./sub.O

0461663 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Kočí, K. - Matějová, L. - Ambrožová, N. - Šihor, M. - Troppová, I. - Čapek, L. - Kotarba, A. - Kustrowski, P. - Hospodková, Alice - Obalová, L.
Optimization of cerium doping of TiO₂ for photocatalytic reduction of CO₂ and photocatalytic decomposition of N₂O.
Journal of Sol-Gel Science and Technology. Roč. 78, č. 3 (2016), s. 550-558. ISSN 0928-0707. E-ISSN 1573-4846
Institucionální podpora: RVO:68378271
Klíčová slova: simulated solar irradiation * simulated solar irradiation * carbon-dioxide * crystal-structure * degradation * layers * microstructure * photoreduction * catalysts * titania * oxide
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.575, rok: 2016

The cerium-doped TiO₂ photocatalysts (0-0.8 mol% Ce) were prepared by using a sol-gel method. Textural, structural, optical and electronic properties of Ce/TiO₂ photocatalysts were characterized in detail by using nitrogen physisorption, powder X-ray diffraction, diffuse reflectance UV-Vis spectroscopy and contact potential difference measurements. The prepared photocatalysts were tested for CO₂ photocatalytic reduction in a stirred batch annular reactor, and methane was a main product. The photocatalytic decomposition of nitrous oxide was carried out in batch reactor with circulation, and only oxygen and nitrogen were detected as reaction products. It was found out that the energies of electrons and holes played the key role in both photocatalytic reactions and can be markedly affected by doping of TiO₂ by cerium.
Trvalý link: http://hdl.handle.net/11104/0261378