Published January 20, 2006
| Version v1
Journal article
Influence of Nitrogen Doping on the Defect Formation and Surface Properties of TiO2 Rutile and Anatase
- 1. Department of Physics, Tulane University, New Orleans, Louisiana 70118 (United States)
Description
Nitrogen doping-induced changes in the electronic properties, defect formation, and surface structure of TiO2 rutile(110) and anatase(101) single crystals were investigated. No band gap narrowing is observed, but N doping induces localized N 2p states within the band gap just above the valence band. N is present in a N(III) valence state, which facilitates the formation of oxygen vacancies and Ti 3d band gap states at elevated temperatures. The increased O vacancy formation triggers the 1x2 reconstruction of the rutile (110) surface. This thermal instability may degrade the catalyst during applications
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 96
- Journal Issue
- 2
- Journal Page Range
- p. 026103-026103.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37081156
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CATALYSTS; CRYSTAL DOPING; MONOCRYSTALS; NITROGEN; OXYGEN; RUTILE; SURFACE PROPERTIES; TITANIUM OXIDES; ULTRAVIOLET RADIATION; VACANCIES; VALENCE; X-RAY PHOTOELECTRON SPECTROSCOPY
- Descriptors DEC
- CHALCOGENIDES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; CRYSTALS; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; MATERIALS; MINERALS; NONMETALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; POINT DEFECTS; RADIATIONS; RADIOACTIVE MATERIALS; RADIOACTIVE MINERALS; SPECTROSCOPY; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2006 The American Physical Society