期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 344, 期 2, 页码 247-250出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.01.019
关键词
Photocatalyst; Low temperature; TiO2; Sol-gel
资金
- National Natural Science Foundation of China [50672086]
A simple method based on sol-gel method was developed to prepare vanadium ions doped TiO2 nanocrystalline at low temperature. Thus-obtained vanadium doped TiO2 was proved to be VxTi1-xO2 solid solution. Doping vanadium could enhance the formation of stable phase. Its optical absorption spectrum shows a red shift to 445 nm. Photodegradation experiments suggest that thus-prepared vanadium doped TiO2 nanocrystalline can be excited by visible light and is a good photocatalyst under daylight. These properties are the same as the vanadium doped TiO2 prepared under high temperature conditions (>= 350 degrees C). However, in the present work, the vanadium doped TiO2 crystal particle is very uniform and fine, about 5 nm. It is much smaller than the production prepared under high temperature. (C) 2010 Elsevier Inc. All rights reserved.
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