NO treated TiO2as an efficient visible light photocatalyst for NO removal

Zhihui Ai, Linli Zhu, Shuncheng Lee, Lizhi Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

In this study, we report that nitrogen doped TiO2could be achieved via thermal treatment of Degussa P25 TiO2in 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>420nm) 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 TiO2, but also provide a facile route to prepare nitrogen doped TiO2for environmental and energy applications.
Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalJournal of Hazardous Materials
Volume192
Issue number1
DOIs
Publication statusPublished - 15 Aug 2011

Keywords

  • Nitrogen doped TiO 2
  • NO
  • Photocatalysis
  • Visible light

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this