期刊
APPLIED SURFACE SCIENCE
卷 255, 期 11, 页码 5896-5901出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2009.01.027
关键词
TiO2; Stannous; Chemical reduction; Photocatalysis
类别
资金
- National Natural Science Foundation of China [20431030]
- Foundation for Excellent Youth of Heilongjiang University
- Foundation for Youth Science and Technology Innovation Talents of Harbin of China [2006RFQXS096]
- Educational Department of Heilongjiang Province of China [1152Z002]
The Sn-TiO2-X nanoparticles have been prepared via a rapid and simple stannous chemical reducing method. The as-prepared Sn-TiO2-X nanoparticles were investigated by means of surface photovoltage spectroscopy (SPS), XPS, and DRS technology as well as photocatalytic degradation of RhB were studied under illumination. The experiment results revealed that the reduction of the TiO2 particles raised their Fermi level, which can enhance the driven force of photoinduced electrons transferring from TiO2 to adsorbed O-2 and SnO2 on the surface of TiO2. On the other hand, the amount of oxygen vacancies of the Sn-TiO2-X increased after the stannous chemical reduction. The oxygen vacancies can also effectively inhibit the recombination of photoinduced electrons and holes pairs. These factors are favorable to the photocatalytic reaction. (C) 2009 Elsevier B. V. All rights reserved.
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