The synthesis and photocatalytic properties of nitrogen doped TiO 2 films prepared using the AC-PLD method

Nobuaki Sato, Minoru Matsuda, Masaki Yoshinaga, Takahiro Nakamura, Shunichi Sato, Atsushi Muramatsu

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Synthesis of N doped TiO2 films were conducted by the atmospheric controlled pulsed laser deposition (AC-PLD) method to generate visible light active photocatalytic films. In this method, the anion doped TiO2 films were synthesized on a quartz substrate by the irradiation of a pulsed Nd:YAG laser on a TiO2 target in the presence of gaseous nitrogen containing reagents at reduced pressure. For nitrogen doping, the use of CH3CN was found to be more effective than the use of NH 3. The visible light absorption properties of the films were very sensitive to the CH3CN partial pressure during ablation. When using CH3CN, nitrogen and an equal quantity of carbon was uniformly doped into the TiO2 films. The resultant films showed better catalytic performance than those which were either un-doped or doped using NH3. The formation of nitrogen doped TiO2 is discussed by relating experimental results to thermodynamic considerations. It is also suggested that stronger reducing agents such as carbon are required for doping nitrogen into TiO2 films.

Original languageEnglish
Pages (from-to)1592-1597
Number of pages6
JournalTopics in Catalysis
Volume52
Issue number11
DOIs
Publication statusPublished - 2009 Oct 1

Keywords

  • AC-PLD
  • Nitrogen doping
  • Photocatalyst
  • Titanium dioxide

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'The synthesis and photocatalytic properties of nitrogen doped TiO 2 films prepared using the AC-PLD method'. Together they form a unique fingerprint.

Cite this