Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2006 Jan 20;96(2):026103. Epub 2006 Jan 20.

Influence of nitrogen doping on the defect formation and surface properties of TiO2 rutile and anatase.

Author information

  • 1Department of Physics, Tulane University, New Orleans, Louisiana 70118, USA.

Abstract

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 1 x 2 reconstruction of the rutile (110) surface. This thermal instability may degrade the catalyst during applications.

PMID:
16486602
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk