NO treated TiO2 as an efficient visible light photocatalyst for NO removal.
J Hazard Mater
; 192(1): 361-7, 2011 Aug 15.
Article
em En
| MEDLINE
| ID: mdl-21632178
ABSTRACT
In this study, we report that nitrogen doped TiO(2) could be achieved via thermal treatment of Degussa P25 TiO(2) in NO atmosphere directly (P25-NO). The samples were characterized with XRD, XPS, and FT-IR. The characterization results suggested that nitrogen species were interstitially doped in P25-NO during the NO thermal treatment process. In comparison with P25, the P25-NO exhibited significantly enhanced photocatalytic activities under visible light irradiation (λ>420 nm) for gaseous NO removal. On the basis of electronic band structure theory, we proposed a possible mechanism for the enhanced visible light driven photocatalytic oxidation process over the interstitial N doping P25-NO samples. This work could not only deepen understanding of the enhanced photoactivity originated from interstitial N doping in TiO(2), but also provide a facile route to prepare nitrogen doped TiO(2) for environmental and energy applications.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Titânio
/
Luz
/
Óxido Nítrico
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article