| Photocatalytic degradation of C. I. Reactive Red 24 solution with K6SiW11O39SnⅡ |
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| 作者姓名： | Guixiang Guo Xiuhua Zhu Fuyou Shi Anning Wang Wei Wang Jun Mu Quanli Wan Rong Zhang |
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| 作者单位： | School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China |
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| 基金项目： | This work was supported by State Key Laboratory of Fine Chemical, Dalian University of Technology (No. KF0707), the Key Laboratory of Environmental Science and Technology, Education Department of Liaoning Province (No. LS2010031) and the Eight Seven Teachers College Students Fellowship of Dalian Jiaotong University (No. 201105). |
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| 摘 要： | Environmental friendly materials, K6SiW11O39Sn (SiWSn), was synthesized. SiWSn photocatalytic decomposition of C. I. Reactive Red 24 (RR24) with the UV-lamp (253.7 nm, 20 W), Xenon lamp filtered less than 390 nm light (500 W) and sun light was investigated. The results showed that RR24 solution could be effectively decolorized with the SiWSn photocatalyst. The photocatalytic degradation efficiency of RR24 with SiWSn was affected by the initial concentration of RR2 solution, the amount of SiWSn and the photolysis time. It is demonstrated that the process of photodegradation of RR24 with SiWSn is a pesudo first-order reaction, which can be described by Langmuir-Hinshelwood equation. Hydroxyl radicals and holes are both the main oxidants in the photocatalytic reaction of RR24 with SiWSn.
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| 关 键 词： | photocatalytic degradation C. I. Reactive Red 24 K6SiW11O39SnⅡ reaction kinetics |
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