期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 182, 期 1, 页码 160-164出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2008.10.012
关键词
TiO2; Rutile; Visible light absorption; Nitrogen doping; EPR
资金
- COST Action D41
Nitrogen doped TiO2 represents one of the most promising material for photocatalitic degradation of environmental pollutants with visible light. However, at present, a great deal of activity is devoted to the anatase polymorph while few data about rutile are available. In the present paper we report an experimental characterization of N doped polycrystalline rutile TiO2 prepared via sol-gel synthesis. Nitrogen doping does not affect the valence band to conduction band separation but, generates intra band gap localized states which are responsible of the on set of visible light absorption. The intra band gap states correspond to a nitrogen containing defect similar but not coincident with that recently reported for N doped anatase. (C) 2008 Elsevier Inc. All rights reserved.
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