Photocatalytic oxidation of 2-propanol under visible light irradiation on TiO2 thin films prepared by an RF magnetron sputtering deposition method
- Photocatalytic oxidation of 2-propanol under visible light irradiation on TiO2 thin films prepared by an RF magnetron sputtering deposition method
- Masaaki Kitano; Kazuhiro Iyatani; Ebrahimi Afsin; Yu Horiuchi; Masato Takeuchi; 조소혜; Masaya Matsuoka; Masakazu Anpo
- 2-propanol degradation; titania; thin film; RF sputtering; photocatalysis; TiO2 thin film photocatalyst; Visible light; RF magnetron sputtering method
- Issue Date
- Research on chemical intermediates
- VOL 38, NO 6, 1249-1259
- Visible light-responsive TiO2 (Vis-TiO2) thin films able to absorb UV
and visible light in wavelength regions of 250–600 nm were successfully developed
by applying a radio-frequency magnetron sputtering deposition method. These Vis-
TiO2 thin films exhibited high activity for the photocatalytic oxidation of 2-propanol
diluted in water even under visible light irradiation (λ ≥ 450 nm). The photocatalytic
activity of Vis-TiO2 thin films was dramatically enhanced by the deposition of
Pt particles on the surface. Secondary ion mass spectrometry measurements
revealed that Pt particles are distributed from the top surface to the deep bulk of Vis-
TiO2 thin films with a columnar structure. The unique columnar structure of Vis-
TiO2 thin films plays an important role in the high photocatalytic performance.
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