Photocatalytic oxidation of 2-propanol under visible light irradiation on TiO2 thin films prepared by an RF magnetron sputtering deposition method

Title
Photocatalytic oxidation of 2-propanol under visible light irradiation on TiO2 thin films prepared by an RF magnetron sputtering deposition method
Authors
Masaaki KitanoKazuhiro IyataniEbrahimi AfsinYu HoriuchiMasato Takeuchi조소혜Masaya MatsuokaMasakazu Anpo
Keywords
2-propanol degradation; titania; thin film; RF sputtering; photocatalysis; TiO2 thin film photocatalyst; Visible light; RF magnetron sputtering method
Issue Date
2012-04
Publisher
Research on chemical intermediates
Citation
VOL 38, NO 6, 1249-1259
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/42781
ISSN
09226168
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KIST Publication > Article
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