| 纳米SnO2/TiO2/MMT制备及其光催化性能 |
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| 引用本文： | 李青,张嘉婧,鲍利红. 纳米SnO2/TiO2/MMT制备及其光催化性能[J]. 印染助剂, 2011, 28(10) |
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| 作者姓名： | 李青 张嘉婧 鲍利红 |
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| 作者单位： | 北京服装学院材料科学与工程学院,北京市服装材料研发与评价重点实验室,北京100029 |
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| 摘 要： | 比较不同制备方法制得的复合催化剂,由超临界干燥法制备的光催化剂具有粒径小,分散性好,光催化活性高等特点.以TiCl4为原料,采用溶胶凝胶法结合超临界流体干燥法(SCFD)制备了纳米级SnO2TiO2/MMT(蒙脱土)复合光催化剂.采用XRD和TEM对样品进行了表征.结果表明:TiO2以锐钛矿型形式存在,催化剂粒径在13～20 nm.以活性红X-3B溶液、活性橙K-NG和活性紫X-2R为反应模型,对所得催化剂的催化活性进行了评价,降解率分别达到99.9％、99.6％和99.5％,化剂循环利用时仍具有较高的催化活性.
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| 关 键 词： | 超临界干燥 染料 光催化降解:TiO2 SnO2 |
Preparation of nano SnO2/TiO2/MMT and its photocatalytic reactivity |
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| LI Qing,ZHANG Jia-jing,Bao Li-hong. Preparation of nano SnO2/TiO2/MMT and its photocatalytic reactivity[J]. Textile Auxiliaries, 2011, 28(10) |
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| Authors: | LI Qing ZHANG Jia-jing Bao Li-hong |
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| Affiliation: | LI Qing,ZHANG Jia-jing,Bao Li-hong(School of Materials Science and Engineering,Beijing Institute of Fashion Technology,Beijing 100029,China) |
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| Abstract: | Compared with the composite photocatalysts,it was found that the photocatalysts prepared by SCFD method had small particle size,good dispersibility and high activity.SnO2/TiO2/MMT(montmorillonite) nanocomposite photocatalysts were prepared using TiCl4 as precursors by sol-gel method and supercritical fluid drying(SCFD) method.The catalysts were characterized by the means of XRD and TEM.The results showed that TiO2 existed in anatase type,and the catalyst particle size was 13~20 nm.The photocatalytic activit... |
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| Keywords: | supercritical fluid drying dye photocatalytic degradation titanium dioxide SnO2 |
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