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Titanium dioxide/kaolinite nanocomposite was prepared by the sol-gel method, with layered kaolinite as a substrate and Ti(OC_4H_9)_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 obtained through experiments. The 1-10 nm thick monolayer anatase nano TiO_2 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 reach 96% and 81.45%, respectively.
Titanium dioxide / kaolinite nanocomposite was prepared by the sol-gel method, with layered kaolinite as a substrate and Ti (OC_4H_9) _4 as a precursor. The effects of hydrolysis, drying and calcination on the production of nanometric titanium dioxide were discussed. The optimal The conditions for preparation were obtained through experiments. The 1-10 nm thick monolayer anatase nano TiO 2 crystal was produced under the conditions as follows: hydrolyzed at 37-42 ° C. for 4 h, dried at 70-80 ° C. for 1 h, and calcined at 550-650 ° C for 3 h. The rate of degradation of 40 mg / L azo dye and 20 mg / L acid red dye can reach 96% and 81.45%, respectively.