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Abstract
The photocatalysts based on TiO2 co-doped with rare earth metal (RE) and gold nanoparticles have been prepared using a sol-gel method and followed by gold reduction. Specific surface areas of the modified photocatalysts were calculated by the Brunauer-Emmett-Teller method (BET). Diffuse reflectance spectra of the obtained photocatalysts were recorded in a UV-Vis spectrophotometer (DRS UV-Vis). The influence of the type of rare earth metal on photoactivity of Au-RE-TiO2 nanocomposites in model reaction manifested by toluene photodegradation in a gas phase was investigated. The obtained results showed that photodegradation of toluene in the gas phase is possible over Au-RE-TiO2 irradiated by UV or Vis light. The Au-RE-TiO2 photocatalysts relative to undoped TiO2, did not caused an increase of toluene degradation in the air under visible light. The samples doped with Er3+ or Pr3+ presented the highest activity in solar light among of Au-RE-TiO2. It was observed that both metal dopants affected the surface area of TiO2. The Au-RE-TiO2 photocatalysts relative to undoped TiO2 exhibited the absorption properties under Vis light.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Physicochemical Problems of Mineral Processing
no. 50,
edition 2,
pages 551 - 561,
ISSN: 1643-1049 - Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Krukowska A., Reszczyńska J., Zaleska-Medynska A.: Au-RE-TiO2 nanocomposites: Surface characteristics and photoactivity// Physicochemical Problems of Mineral Processing. -Vol. 50, iss. 2 (2014), s.551-561
- Verified by:
- Gdańsk University of Technology
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