| 非钛醇盐溶胶-凝胶法制备高光活性纳米晶TiO2气凝胶 |
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| 引用本文： | 陈麟,朱建,杨俊,刘永梅,曹勇,贺鹤勇,戴维林,范康年.非钛醇盐溶胶-凝胶法制备高光活性纳米晶TiO2气凝胶[J].催化学报,2006,27(4):291-293. |
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| 作者姓名： | 陈麟 朱建 杨俊 刘永梅 曹勇 贺鹤勇 戴维林 范康年 |
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| 作者单位： | 复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433;复旦大学化学系,上海市分子催化与功能材料重点实验室,上海,200433 |
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| 基金项目： | 中国科学院资助项目;科技部科研项目 |
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| 摘 要： | 以TiCl4为前驱体,采用环氧丙烷快速成胶法合成了具有高光催化活性的纳米晶TiO2气凝胶,利用X射线衍射、N2物理吸附和透射电镜等手段考察了H2O/TiCl4摩尔比和热处理等制备参数对TiO2气凝胶织构性质的影响,并以苯酚的光催化降解为模型反应评价了样品的光催化活性. 结果表明, H2O/TiCl4摩尔比为3时体系的成胶过程较为缓慢,制备的纳米晶TiO2气凝胶样品具有最小的晶粒尺寸及最大的比表面积和孔容,并且具有最佳的光催化活性.
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| 关 键 词： | 二氧化钛 气凝胶 苯酚 降解 环氧丙烷 溶胶-凝胶 |
| 文章编号： | 0253-9837（2006）04-0291-03 |
| 收稿时间： | 12 29 2005 12:00AM |
| 修稿时间： | 2005-12-29 |
A Highly Photoactive Nanocrystalline TiO2 Aerogel Prepared by a Non-Alkoxide Sol-Gel Method |
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| CHEN Lin,ZHU Jian,YANG Jun,LIU Yongmei,CAO Yong,HE Heyong,DAI Weilin,FAN Kangnian.A Highly Photoactive Nanocrystalline TiO2 Aerogel Prepared by a Non-Alkoxide Sol-Gel Method[J].Chinese Journal of Catalysis,2006,27(4):291-293. |
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| Authors: | CHEN Lin ZHU Jian YANG Jun LIU Yongmei CAO Yong HE Heyong DAI Weilin FAN Kangnian |
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| Institution: | Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China |
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| Abstract: | The nanocrystalline TiO_2 aerogel was prepared by a novel epoxide-mediated non-alkoxide sol-gel method,and the catalyst was characterized by X-ray diffraction,N_2 adsorption and transmission electron microscopy.The influence of the preparation conditions on the textural properties of the TiO_2 aerogels was investigated,and the catalyst activity was tested by using phenol degradation as the model reaction.When H_2O/TiCl_4 molar ratio is 3,the prepared TiO_2 aerogel has the smallest crystallite size and the biggest surface area,and the catalyst shows the highest activity for phenol degradation. |
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| Keywords: | titanium dioxide aerogel phenol degradation propylene epoxide sol-gel |
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