Abstract
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 obtained through experiments. The 1–10 nm thick monolayer anatase nano TiO2 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.
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Lei Shaomin, Gong Wenqi, Wang Yang,et al. Preparation and Characterization of Metal-doped Naometric TiO2/Kaolin Photocatalyst Composites[J].Metal Mine, 2004,8:413–417
Ma Xiaomin, Wang Yizhong. Study and Advancement of Sterilization by TiO2 Photocatalitical Oxidation[J].Environmental Pollution Control Technology and Equipment, 2002,3(5):15–19
Feng Qing, Liu Gaobing, Wang Wanglu. Mechanism of TiO2 Photocatalysis and Its Role of Sterilization in Refrigeration Equipment[J].Journal of Chongqing University, 2002, 25 (8):58–60
Liu Renlong, Zhang Yunhuai, Zhang Binghuai. Factors Affecting TiO2 Properties of Photocatalitical Oxidation[J].Journal of Chongqing University, 2002,25(6):92–97
B J Ninness, D W Beusfield, C P Tirpp. Formation of a Thin TiO2 Layer on the Surfaces of Silica and Kaolin Pigments Through Atomic Layer Deposition[J].Colloids and Surfaces A. Physicochem. Eng. Aspects, 2003, (214):195–204
Zhao M Y, Chen S F, Tao Y W. Photocatalytic Degradation of Organophosphorous Pesticides using TiO2 Thin Films[J].Journal of Chemical Technology and Biotechnology, 1995, 64: 339–344
Byunghoon Kim, Dohwan Kim, Donglyum Cho,et al. Bactericidal Effect of TiO2 Photocatalyst on Selected Food-borne Pathogenic Bacteria[J].Chemosphere, 2003, 52:277–28
He Fei, Tang Huaijun, Zhao Wenkuan, Fang Youling. Study on Immobilization Technology of Nanosized Titanium Dioxide Photocatalyst[J].Techniques and Equipment for Environmental Pollution Control, 2001,2(2):47–58
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Funded by National “973” Plan Research Project (No. 2004CB619204) and Educational Ministry Scientific and Technological Research Key Project (No. 02052)
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Shaomin, L., Wenqi, G., Chunhua, B. et al. Preparation of TiO2/Kaolinite nanocomposite and its photocatalytical activity. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 21, 12–15 (2006). https://doi.org/10.1007/BF02841194
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DOI: https://doi.org/10.1007/BF02841194