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Citation: ZHOU Lei, ZHAO Wen-Kuan, FANG You-Ling. Photocatalytic Activity of Anatase TiO₂ Thin Films Prepared by Liquid Phase Deposition[J]. Chinese Journal of Applied Chemistry, ;2002, 19(10): 919-922. shu

Photocatalytic Activity of Anatase TiO₂ Thin Films Prepared by Liquid Phase Deposition

1.
Department of Chemistry, Wuhan University, Wuhan 430072

Corresponding author: ZHAO Wen-Kuan,
Received Date: 25 December 2001
Available Online: 10 June 2002
Fund Project: 国家自然科学基金资助项目(2007303) (2007303)

Anatase TiO₂ thin films on glass substrate were obtained in an aqueous solution of (NH₄)₂TiF₆ and H₃BO₃ supersaturated with nano-crystalline TiO₂. When the concentration of TiF₆^2- in the aqueous solution was 0.1 mol/L, and the TiF₆^2-/H₃BO₃ molar ratio was 1:2~1:4 transparent anatase TiO₂ thin films could be obtained by deposition at 35℃ followed by calcination. It is found that the film thickness increased with deposition time and achieved 260 nm at a deposition time of 9 h. The photocatalytic activity of the TiO₂ thin films was evaluated through catalytic degradation of methylene blue. The TiO₂ thin films prepared by calcination at 300℃ showed the strongest photocatalytic activity, which was 5 times the activity of the films prepared without calcination.
- liquid phase deposition,
- anatase TiO₂ thin film,
- photocatalysis
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Photocatalytic Activity of Anatase TiO₂ Thin Films Prepared by Liquid Phase Deposition