期刊
APPLIED CATALYSIS A-GENERAL
卷 387, 期 1-2, 页码 135-140出版社
ELSEVIER
DOI: 10.1016/j.apcata.2010.08.021
关键词
TiO2-SiO2; Ag; Pt; Photodeposition; Phenol degradation; Photocatalysis
资金
- Spanish Ministerio Ciencia e Innovacion [CTQ2008-05961-CO2-01]
- CSIC-Colciencias bilateral project [2006-000001]
TiO2-SiO2 mixed oxides have been synthesised and modified by Ag and Pt deposition. Due to the effect of the silica on the mixed oxide, the prepared materials presented high surface areas and stabilised anatase as the only crystalline phase after calcination at 700 degrees C. Even using the same photodeposition experimental conditions, the yield for metal deposition depended highly on the metal considered, being much lower for Ag deposition. XPS studies permitted to estimate metal dispersion and oxidation state of the different samples, being both factors of high importance regarding photocatalytic improvement by metal deposition. (C) 2010 Elsevier B.V. All rights reserved.
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