| 六氯苯在TiO_2催化下的光降解研究 |
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| 引用本文： | 李凡修,黄瑜.六氯苯在TiO_2催化下的光降解研究[J].安徽农业科学,2011,39(4):2185-2188. |
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| 作者姓名： | 李凡修 黄瑜 |
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| 作者单位： | 长江大学化学与环境工程学院,湖北荆州,434023 |
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| 摘 要： | 目的]对六氯苯污染的废水进行处理研究。方法]采用使六氯苯预先吸附到催化剂表面,在TiO2催化作用下的光降解。结果]研究表明,HCB/TiO2的量、Fe3＋浓度、H2O2用量对六氯苯的光催化影响较大;TiO2表面覆盖度、体系pH值对六氯苯的光催化影响相对较小。结论]在UV/TiO2/H2O2条件下,TiO2可有效地催化降解HCB,当表面覆盖度为4×10-5mol/g,HCB/TiO2用量为50 mg,H2O2用量16 mmol/L时,室温条件下90 min六氯苯脱氯率可达94.8%。
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| 关 键 词： | 六氯苯 二氧化钛 光催化 降解 反应机理 |
Study on the Photodegradation of Hexachlorobenzene Catalyzed by TiO_2 |
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| LI Fan-xiu et al.Study on the Photodegradation of Hexachlorobenzene Catalyzed by TiO_2[J].Journal of Anhui Agricultural Sciences,2011,39(4):2185-2188. |
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| Authors: | LI Fan-xiu |
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| Institution: | LI Fan-xiu et al(College of Chemical & Environmental Engineering,Yangtze University,Jingzhou,Hubei 434023) |
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| Abstract: | Objective] The aim was to study the treatment of waste water what polluted by hexachlorbenzene.Method] Hexachlorbenzene was first pre-adsorbed on the surface of catalysts,then,carried out photodegradation under the catalytic action of TiO2.Result] The results indicated that the amount of HCB/TiO2,Fe3+ concentration and H2O2 dosage had a greater photocatalysis effect on photodegradation;however,the surface coverage of TiO2 and system pH value had little effect on photooxidation.Conclusion] Under the cond... |
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| Keywords: | Hexachlorobenzene Titanium dioxide Photocatalysis Degradation Reaction mechanism |
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