Influence of Thermal Activation of Titania on Photoreactivity of Pt/TiO2 in Hydrogen Production
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Catalysis Letters
ISSN: 1011-372X
, E-ISSN: 1572-879X
|
| Output data |
Year: 2021,
Volume: 151,
Pages: 748–754
Pages count
: 7
DOI:
10.1007/s10562-020-03321-w
|
| Tags |
Photocatalysis · XPS · NEXAFS · XRD · Nanoparticles |
| Authors |
Kurenkova Anna Yu.
1
,
Kremneva Anna M.
1
,
Saraev Andrey A.
1
,
Murzin Vadim
2
,
Kozlova Ekaterina A.
1
,
Kaichev Vasily V.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis
|
| 2 |
Deutsches Elektronen-Synchrotron DESY
|
|
Funding (1)
|
1
|
Russian Science Foundation
|
19-73-20020
|
A series of Pt/TiO2 photocatalysts was prepared by impregnation of fresh and thermal-activated titania (commercial Evonik Aeroxide P25 TiO2) with an aqueous solution of H2PtCl6 followed by reduction in an aqueous solution of NaBH4. The thermal activation was performed by annealing in air. The photocatalytic activity of the Pt/TiO2 catalysts was measured for the hydrogen production from a mixture of glycerol under UV radiation. It was found that the activation at 300–600 °C provides an increase in the photoreactivity of resulting Pt/TiO2 photocatalysts in the production of hydrogen while its structural and textural properties do not change. This effect is due to formation of cationic vacancies that limits fast electron–hole recombination.