引用本文:
周磊, 赵文宽, 方佑龄. 液相沉积法制备光催化活性TiO2薄膜[J]. 应用化学,
2002, 19(10): 919-922.
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.
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.
液相沉积法制备光催化活性TiO2薄膜
摘要:
将基材玻璃片浸渍在含配合物TiF62-、F-离子捕获剂H3BO3,及加有结晶诱导剂TiO2纳米晶的过饱和水溶液中,在基材上沉积TiO2薄膜。在沉积温度35℃和TiF62-水溶液的浓度为0.1 mol/L及反应物TiF62-和H3BO3的摩尔比为1:2~1:4的条件下,能得到透明锐钛矿型TiO2的薄膜。膜的厚度随沉积时间的延长而增加,当沉积时间为9 h时,膜厚约为260 nm。通过亚甲兰的光催化降解评价经不同温度热处理后TiO2薄膜的光催化活性。结果表明,经300℃热处理的TiO2薄膜具有最高的光催化活性,其活性相当于35℃下沉积所得TiO2薄膜的5倍。
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关键词:
- 液相沉积
- / 锐钛矿型TiO2薄膜
- / 光催化
English
Photocatalytic Activity of Anatase TiO2 Thin Films Prepared by Liquid Phase Deposition
Abstract:
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 TiF62- in the aqueous solution was 0.1 mol/L, and the TiF62-/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.
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Key words:
- liquid phase deposition
- / anatase TiO2 thin film
- / photocatalysis
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