| TiO2/SiO2气凝胶的非超临界干燥法制备及其对吡啶降解的光催化活性 |
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| 引用本文： | 甘礼华,王玉栋,郝志显,徐子颉,陈龙武. TiO2/SiO2气凝胶的非超临界干燥法制备及其对吡啶降解的光催化活性[J]. 中国化学工程学报, 2005, 13(6): 758-763 |
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| 作者姓名： | 甘礼华 王玉栋 郝志显 徐子颉 陈龙武 |
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| 作者单位： | Department of Chemistry, Tongji University, Shanghai 200092, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （No. 20473057） and Development Foundation of Science and Technology of Shanghai （No. 0352nm094）. |
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| 摘 要： | TiO2/SiO2 aerogels with different molar ratio of SiO2/TiO2 were prepared via non-supercritical method using tetrabutyl titanate and silica sols as raw materials. The samples were characterized by TEM, SEM, BET, IR, XRD and so on. The results indicate that the BET surface area of TiO2/SiO2 aerogels calcined at 550℃ which consisted of anatase structure of TiO2 with narrow distribution pores of 5-25 nm is as high as 357.89 m^2·g^-1. For the photocatalytic degradation of pyridine, the catalytic activities of TiO2/SiO2 aerogels are much higher than that of TiO2 powder. The photocatalytic activity of TiO2/SiO2 aerogels calcined at 800℃ is the optimum. The higher the content of SiO2, the higher the photocatalytic activity of TiO2/SiO2 aerogels. The cost for preparation of the aerogels is greatly reduced by using non-supercritical drying method, and the aerogels are hopefully applied in the treatment of industrial waste water such as coking effluent treatment.
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| 关 键 词： | TiO2/SiO2气凝胶 非超临界干燥法 制备 吡啶 降解 光催化活性 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-04-262005-08-10 |
Preparation of TiO2/SiO2 Aerogels by Non-supercritical Drying Method and Their Photocatalytic Activity for Degradation of Pyridine |
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| GAN Lihua,WANG Yudong,HAO Zhixian,XU Zijie,CHEN Longwu. Preparation of TiO2/SiO2 Aerogels by Non-supercritical Drying Method and Their Photocatalytic Activity for Degradation of Pyridine[J]. Chinese Journal of Chemical Engineering, 2005, 13(6): 758-763 |
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| Authors: | GAN Lihua WANG Yudong HAO Zhixian XU Zijie CHEN Longwu |
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| Affiliation: | Department of Chemistry, Tongji University, Shanghai 200092, China;Department of Chemistry, Tongji University, Shanghai 200092, China;Department of Chemistry, Tongji University, Shanghai 200092, China;Department of Chemistry, Tongji University, Shanghai 200092, China;Department of Chemistry, Tongji University, Shanghai 200092, China |
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| Abstract: | TiO2/SiO2 aerogels with different molar ratio of SiO2/TiO2 were prepared via non-supercritical method using tetrabutyl titanate and silica sols as raw materials. The samples were characterized by TEM, SEM, BET, IR,XRD and so on. The results indicate that the BET surface area of TiO2/SiO2 aerogels calcined at 550℃ which the photocatalytic degradation of pyridine, the catalytic activities of TiO2/SiO2 aerogels are much higher than that of TiO2 powder. The photocatalytic activity of TiO2/SiO2 aerogels calcined at 800℃ is the optimum. The higher the content of SiO2, the higher the photocatalytic activity of TiO2/SiO2 aerogels. The cost for preparation of the aerogels is greatly reduced by using non-supercritical drying method, and the aerogels are hopefully applied in the treatment of industrial waste water such as coking effluent treatment. |
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| Keywords: | TiO2/SiO2 aerogels photocatalysis pyridine degradation |
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