| 负载型纳米TiO2光催化降解水中微量溶解性间二甲苯 |
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| 引用本文： | 李继洲,胥峥,林逢凯,王郁.负载型纳米TiO2光催化降解水中微量溶解性间二甲苯[J].环境工程学报,2002,3(9):72-74. |
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| 作者姓名： | 李继洲 胥峥 林逢凯 王郁 |
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| 作者单位： | 华东理工大学资源与环境工程学院,上海,200237 |
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| 基金项目： | 国家自然科学基金资助项目 (2 98770 7) |
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| 摘 要： | 以高压汞灯为光源 ,采用浸涂 -烧结法制备的负载型纳米TiO2 作为光催化剂 ,通过对水中微量溶解性间二甲苯的光催化氧化过程的研究表明 ,初始浓度在 6 .6 8— 17.36mg/L的范围内 ,间二甲苯的光催化反应遵循表观一级反应动力学规律 ,反应的表观速率常数随溶液初始浓度的增大而减小 ,半衰期则随初始浓度的增大而增加 ,经 1.5h反应后 ,溶液中间二甲苯的去除率从 17.36mg/L的 5 4 .4 4 %增加到 6 .6 8mg/L的 75 .90 %。
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| 关 键 词： | 负载型纳米TiO2 光催化 溶解性间二甲苯 |
Study on photo-catalytic oxidation for soluble m-xylene in water by immobilized nanometer TiO2 photo-catalyst |
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| Li Jizhou,Xu Zheng,Lin Fengkai,Wang Yu.Study on photo-catalytic oxidation for soluble m-xylene in water by immobilized nanometer TiO2 photo-catalyst[J].Techniques and Equipment for Environmental Pollution Control,2002,3(9):72-74. |
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| Authors: | Li Jizhou Xu Zheng Lin Fengkai Wang Yu |
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| Abstract: | Under illumination by high pressure Hg lamp and catalyzed by immobilized nanometer TiO 2 photo catalyst prepared by dipping sintering process, it was shown that the reaction of photo catalysis for soluble m xylene was in conformity with the first order kinetics law in appearance. From 6.68 to 17.36 mg/L of initial concentration of m xylene in water, the apparent rate constant of the reaction decreased with increasing of initial concentration and half life period of the reaction increased as initial concentration of m xylene in water increased. The removal ratio of m xylene increased from 54.44% at concentration 17.36 mg/L to 75.90 % at 6.68 mg/L after 1.5 hour of reaction. |
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| Keywords: | immobilized nanometer TiO 2 photo catalytic oxidation soluble m xylene |
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