Preparation of TiO2/Kaolinite Nanocomposite and Its Photocatalytical Activity

Titanium dioxide/ kaolinite nanocomposite was prepared by the sol-gel method, with layered kaolinite as a substrate and Ti ( OC4H9 )4 as a precursor. The effects of hydrolysis, drying and calcination on the production of nanometric titanium dioxide were discussed. The optimal conditions for preparat...

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Veröffentlicht in:Journal of Wuhan University of Technology. Materials science edition 2006-12, Vol.21 (4), p.12-15
Hauptverfasser: Shaomin, Lei, Wenqi, Gong, Chunhua, Bai, Yi, Qu, Yongqin, Gu, Bihua, Xiong, Cheng, Wang
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Sprache:eng
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Zusammenfassung:Titanium dioxide/ kaolinite nanocomposite was prepared by the sol-gel method, with layered kaolinite as a substrate and Ti ( OC4H9 )4 as a precursor. The effects of hydrolysis, drying and calcination on the production of nanometric titanium dioxide were discussed. The optimal conditions for preparation were" bbtained through experiments. The 1- 10 nrn thick monolayer anatase nano TiO2 crystal was produced under the conditions as follows: hydrolyzed at 37-42 ℃ for 4 h, dried at 70-80 ℃ for 1 h, and calcined at 550-650℃ for 3 h. The rate of degradation of 40 mg/ L azo dye and 20 mg/ L acid red dye can reuch 96% and 81.45%, respectively.
ISSN:1000-2413
1993-0437
DOI:10.1007/BF02841194