| 固体超强酸SO4^2-/TiO2-WO3光催化降解邻硝基苯酚动力学研究 |
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| 引用本文： | 彭少洪,黄运凤.固体超强酸SO4^2-/TiO2-WO3光催化降解邻硝基苯酚动力学研究[J].湖北化工,2009(6):32-35. |
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| 作者姓名： | 彭少洪 黄运凤 |
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| 作者单位： | 广州城市职业学院生物与环境工程系,广东广州510405 |
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| 基金项目： | 广州市科技攻关资助项目（08C007） |
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| 摘 要： | 在高压汞灯下,研究了邻硝基苯酚在SO4^2-/TiO2-WO3光催化剂表面的降解过程,对邻硝基苯酚在SO4^2-/TiO2-WO3悬浮体系中的降解机理进行了初步的探讨。结果表明,光降解反应速率受邻硝基苯酚的初始浓度、气相氧流量、反应温度、溶液pH值、光强度和催化剂用量等因素的影响。基于Langmuir-Hinshelwood方程和一些假设,分析了邻硝基苯酚光降解的动力学机理,推导了固体超强酸SO4^2-/TiO2-WO3催化邻硝基苯酚光降解的动力学方程。
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| 关 键 词： | 光催化 SO42-/TiO2-WO3 邻硝基苯酚 动力学 |
Kinetic Study on Photocatalytic Degradation of o-Nitrophenol by Solid Superacid SO4^2-/TiO2-WO3 |
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| PENG Shao-hong,HUANG Yun-feng.Kinetic Study on Photocatalytic Degradation of o-Nitrophenol by Solid Superacid SO4^2-/TiO2-WO3[J].Hubei Chemical Industry,2009(6):32-35. |
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| Authors: | PENG Shao-hong HUANG Yun-feng |
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| Affiliation: | (Department of Biology and Environmental Engineering, Guangzhou City Polytechnic, Guangzhou 510405, China) |
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| Abstract: | This paper investigates the degradation process of o-nitrophenol on the surface of SO4^2-/TiO2-WO3 photocatalyst with the help of high pressure mercury vapor lamp. The preliminary discussion is made on the degradation mechanism of o-nitrophenol in SO4^2-/TiO2-WO3 suspension system. The result shows that the photodegradation reaction rate depends on the initial concentration of o-nitrophenol, flow rate of gas phase oxygen, reaction temperature, pH value of solution, light intensity and dosage of catalyst. Based on the Langmuir- Hinshelwood equation and some hypotheses, kinetics mechanism of photodegradation of o-nitrophenol is analyzed, and kinetics equation of photocatalytic degradation of o-nitrophenol by solid superacid SO4^2-/TiO2-WO3 is derived in this paper. |
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| Keywords: | photocatalysis SO4^2-/TiO2-WO3 o-nitrophenol kinetic |
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