期刊
CATALYSIS TODAY
卷 225, 期 -, 页码 2-9出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2013.08.026
关键词
Titanium dioxide; Photocatalysis; Vacuum heating; Oxygen vacancy; Ti3+ defects
资金
- College of Arts and Sciences, University of Missouri - Kansas City
- University of Missouri Research Board
- National Natural Science Foundation of China [21071096]
In this study, we investigated vacuum-treated TiO2 nanocrystals. They displayed long-wavelength optical absorption due to the existence of oxygen vacancy and Ti3+ defects, and also possibly the surface structural disorder. Both oxygen vacancy and Ti3+ defects influenced the photocatalytic activities in methylene blue decomposition and hydrogen generation. Oxygen vacancy benefited photocatalytic methylene blue (MB) decomposition, but harmed the photocatalytic hydrogen generation. Ti3+ defects displayed a more complicated effect. (C) 2013 Elsevier B.V. All rights reserved.
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