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Preparation and spectroscopic characterization of visible light sensitized N doped TiO2 (rutile)

Authors :
Stefano Livraghi
A. M. Czoska
Elio Giamello
Maria Cristina Paganini
Source :
Journal of Solid State Chemistry. 182:160-164
Publication Year :
2009
Publisher :
Elsevier BV, 2009.

Abstract

Nitrogen doped TiO{sub 2} 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 TiO{sub 2} 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. - Graphical abstract: Nitrogen doped TiO{sub 2} 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 TiO{sub 2} prepared via sol-gel synthesis.

Details

ISSN :
00224596
Volume :
182
Database :
OpenAIRE
Journal :
Journal of Solid State Chemistry
Accession number :
edsair.doi...........ca759f75f8a0aeb0be20412c35ebf2b9
Full Text :
https://doi.org/10.1016/j.jssc.2008.10.012