| H2O2敏化H3PW12O40／SiO2光催化降解甲基紫 |
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| 引用本文： | 杨赟,黄永葵,杨水金,冯传启.H2O2敏化H3PW12O40／SiO2光催化降解甲基紫[J].湖北大学学报(自然科学版),2013(4):421-426. |
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| 作者姓名： | 杨赟 黄永葵 杨水金 冯传启 |
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| 作者单位： | [1]湖北大学化学化工学院,湖北武汉430062 [2]湖北师范学院化学化工学院,污染物分析与资源化技术湖北省重点实验室,湖北黄石435002 |
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| 基金项目： | 污染物分析与资源化技术湖北省重点实验室基金资助 |
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| 摘 要： | 采用溶胶一凝胶技术将Keggin型H3PW12O40负载在SiO2上，并用H2O2溶液对其进行敏化，制得HsPW12O40／SiO2／H2O2光催化剂．考察在模拟自然光条件下，甲基紫的初始浓度、溶液pH以及催化剂用量对甲基紫可见光催化降解率的影响．实验发现，在甲基紫初始浓度为30mg／L，溶液pH为2．5，催化剂的用量为0．6g／L的优化情况下，光降解2．5h，甲基紫的降解率达到92％．
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| 关 键 词： | 多金属氧酸盐 光催化降解 甲基紫 SiO2 |
Photocatalytic degradation of methyl violet with H3 PW12O40/SiO2 sensitized by H2O2 |
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| YANG Yun,HUANG Yongkui,YANG Shuijin,FENG Chuanqi.Photocatalytic degradation of methyl violet with H3 PW12O40/SiO2 sensitized by H2O2[J].Journal of Hubei University(Natural Science Edition),2013(4):421-426. |
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| Authors: | YANG Yun HUANG Yongkui YANG Shuijin FENG Chuanqi |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Hubei University,Wuhan 430062, China 2. College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis I Reuse Technology, Hubei Normal University, Huangshi 435002,China) |
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| Abstract: | In order to remove aquatic organic dye contaminants utilizing the inexpensive and inexhaustible solar energy, the Keggin-type H3 PW12 O40 was loaded by the specific surface area SiO2 with the sol-gel method, and sensitized by H2 O2 solution. The photocatalytic degradation of methyl violet by Ha PW12 O40/SiO2/H2 O2 under simulated natural light irradiation was investigated. At the same time, influences of the initial methyl violet concentration, the solution pH and the catalyst dosage on the photocatalytic degradation rate of methyl violet were also examined. The results demonstrated that initial concentration of methyl violet was 30 mg/L, catalyst dosage was 0. 6 g/L and the pH was 2. 5, the degradation ratio of methyl violet was as high as 92% after 2. 5 h simulated natural light irradiation. |
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| Keywords: | polyoxometalates photocatalytic degradation methyl violet SiO2 |
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