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Preparation and characterization of Pt/Pd-modified titanium dioxidenanoparticles for visible light irradiation
Abstract
Series of Pt/Pd–TiO2photocatalysts were obtained using the sol–gel method. The Pt/Pd–TiO2nanocom-posites showed significant visible light photoactivity. X-ray diffraction, STEM microscopy, UV–visspectroscopy and BET characterization allowed to conclude that the photocatalysts at the best perfor-mance had the anatase structure, 91 m2/g specific surface area, Pt/Pd alloy structure and 1–4 nm particlesize. The photocatalytic activity was evaluated by measuring the decomposition rate of phenol in 0.21 mMaqueous solution under visible light irradiation ( > 420 nm). The effect of platinum precursor, crystal-lite size of TiO2on photocatalytic activity of the Pt/Pd–TiO2nanocomposites was investigated. The bestphotocatalytic activity was observed for the sample Pt/Pd–TiO2modified with 0.5 mol% of platinum and0.5 mol% of palladium. The average degradation rate of 6.84 mol dm−3min−1for phenol was about 19times greater than for pure TiO2obtained using the same preparation procedure.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
CATALYSIS TODAY
no. 230,
pages 181 - 187,
ISSN: 0920-5861 - Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Zielińska-Jurek A., Hupka J.: Preparation and characterization of Pt/Pd-modified titanium dioxidenanoparticles for visible light irradiation// CATALYSIS TODAY. -Vol. 230, (2014), s.181-187
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.cattod.2013.09.045
- Verified by:
- Gdańsk University of Technology
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