| 纳米TiO2/玻璃薄膜光催化降解亚甲基蓝的研究 |
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| 引用本文： | 王娅娟. 纳米TiO2/玻璃薄膜光催化降解亚甲基蓝的研究[J]. 山东师范大学学报(自然科学版), 2003, 18(1): 39-42 |
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| 作者姓名： | 王娅娟 |
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| 作者单位： | 山东教育学院化学系,250013,济南 |
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| 基金项目： | 山东省自然科学基金资助项目 (Q98B0 712 3 ) |
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| 摘 要： | 用溶胶 -凝胶法在玻璃表面制备了均匀透明的纳米TiO2 薄膜 .采用高压汞灯为光源 ,敞口固定床反应器对水中染料亚甲基蓝进行了光催化氧化实验 .实验结果表明 :随着涂膜次数的增加 ,薄膜TiO2 负载量增加 ,锐钛矿晶相粒径增大 .TiO2 薄膜对亚甲基蓝氧化降解具有较高的光催化活性 ,降解反应符合一级速率方程 .对亚甲基蓝的暗态吸附及光催化降解机理作了初步探讨
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| 关 键 词： | 纳米TiO2 亚甲基蓝 光催化降解 活性 |
| 修稿时间： | 2002-04-25 |
STUDIES ON PHOTOCATALYTIC PROPERTIES OF NANOMETER TiO2/GLASS THIN FILM AND DEGRADATION OF METHYLENE BLUE |
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| Wang Yajuan. STUDIES ON PHOTOCATALYTIC PROPERTIES OF NANOMETER TiO2/GLASS THIN FILM AND DEGRADATION OF METHYLENE BLUE[J]. Journal of Shandong Normal University(Natural Science), 2003, 18(1): 39-42 |
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| Authors: | Wang Yajuan |
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| Abstract: | In this paper,the uniform transparent nanometer TiO 2/glass photocatalytic thin films were prepared via sol-gel processing.The photocatalytic oxidation of methylene blue was investigated in an open fixed-bed photoreactor illuminated with high pressure mercury lamp.It was found that the increase of cycles of dip-coating can cause the increase of TiO 2 loading,as well as the grain growth of TiO 2 anatase phase.The nanometer TiO 2/glass thin film showed high photocatalytical activity in degradation of methylene blue.The photodegradation follows first order kinetics.The dark absorption and photodegradation mechanism of methylene blue were discussed. |
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| Keywords: | nanometer TiO 2 thin film methylne blue photocatalytic degradation activity |
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