| WO3/TiO2复合半导体的光催化性能研究 |
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| 引用本文： | 李芳柏,古国榜,黎永津.WO3/TiO2复合半导体的光催化性能研究[J].环境科学,1999,20(4):75-78. |
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| 作者姓名： | 李芳柏 古国榜 黎永津 |
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| 作者单位： | 华南理工大学化工学院 |
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| 摘 要： | 采用Ｓｏｌ－Ｇｅｌ法制备ＷＯ３／ＴｉＯ２纳米粉末，以高压汞灯为光源，亚甲基蓝溶液的光催降为模型反应，结果表明，掺入ＷＯ３摩尔比为２％时，ＷＯ３／ＴｉＯ２的光活性最高；随着热处理温升高，ＷＯ３／ＴｉＯ光活性增强；
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| 关 键 词： | 光催化 二氧化钛 三氧化钨 复合半导体 废水 |
| 收稿时间： | 1998/11/19 0:00:00 |
Enhanced Rates of Photocatalytic Behavior Using WO3/TiO2 CoupledSemiconductor Nanopowder |
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| Li Fangbai,Gu Guobang and Li Yongjing.Enhanced Rates of Photocatalytic Behavior Using WO3/TiO2 CoupledSemiconductor Nanopowder[J].Chinese Journal of Environmental Science,1999,20(4):75-78. |
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| Authors: | Li Fangbai Gu Guobang and Li Yongjing |
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| Institution: | College of Chemical Engineering, South China Technology University, Guangzhou 510642, China;College of Chemical Engineering, South China Technology University, Guangzhou 510642, China;College of Chemical Engineering, South China Technology University, Guangzhou 510642, China |
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| Abstract: | WO3/TiO2 Coupled nanopowder was prepared by solgel process.Being a model reaction,the photocatalytic degradation of methylene blue in TiO2 and WO3/TiO2 nanopowder suspension irradiated by high pressure mercury lamp was investigated.As a results,the addition of WO3 to TiO2 greatly enhanced its photocatalytic behavior,and the optimum concentration of WO3 on TiO2 was 2%(molar fraction)and the photocatalytic activity was enhanced with a rise of the calcination temperature.The results showed the Langmuir kinetics constants of WO3/TiO2 was 001036 mmol/(Lmin)-1.UVvis absorption spectra and Ion Chromatography analyses showed that WO3/TiO2 made methylene blue more easily mineralized,compared with TiO2. |
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| Keywords: | photocatalysis titanium dioxide tungsten oxide coupled semiconductor methylene blue |
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