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- Title
The Synthesis and Photocatalytic Properties of Nitrogen Doped TiO<sub>2</sub> Films Prepared Using the AC-PLD Method.
- Authors
Sato, Nobuaki; Matsuda, Minoru; Yoshinaga, Masaki; Nakamura, Takahiro; Sato, Shunichi; Muramatsu, Atsushi
- 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 NH3. 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.
- Subjects
TITANIUM dioxide; NITROGEN; PHOTOCATALYSIS; PULSED laser deposition; COATING processes
- Publication
Topics in Catalysis, 2009, Vol 52, Issue 11, p1592
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-009-9286-1