| 改性纳米TiO2降解水中微量次甲基蓝的动力学研究 |
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| 引用本文： | 刘彦平,杨志远.改性纳米TiO2降解水中微量次甲基蓝的动力学研究[J].应用化学,2006,23(9):1019-0. |
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| 作者姓名： | 刘彦平 杨志远 |
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| 作者单位： | 西安科技大学材料科学与工程系 |
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| 基金项目： | 陕西省自然科学基金(2003E225)资助项目 |
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| 摘 要： | 改性纳米TiO2降解水中微量次甲基蓝的动力学研究;光催化氧化;动力学;表观一级反应
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| 关 键 词： | 改性纳米TiO2降解水中微量次甲基蓝的动力学研究 光催化氧化 动力学 表观一级反应 |
| 文章编号： | 1000-0518(2006)09-1019-04 |
| 收稿时间： | 09 9 2005 12:00AM |
| 修稿时间： | 12 4 2005 12:00AM |
Kinetic Mechanism of Photo-catalytic Oxidation for Soluble Methylene Blue in Water by SO2-4 Modified Nano-sized TiO2 |
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| LIU Yan-Ping,YANG Zhi-Yuan.Kinetic Mechanism of Photo-catalytic Oxidation for Soluble Methylene Blue in Water by SO2-4 Modified Nano-sized TiO2[J].Chinese Journal of Applied Chemistry,2006,23(9):1019-0. |
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| Authors: | LIU Yan-Ping YANG Zhi-Yuan |
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| Abstract: | Nano-sized SO~(2-)_4/TiO_(2) particles were prepared from TiCl_(4)and(NH_(4))_(2)SO_(4) by the Sol-Gel method and characterized by XRD and FTIR.Photocatalytic degradation of methylene blue solution under ultraviolet radiation was carried out by using nanoparticle TiO_(2) doped with SO~(2-)_4 as the photocatalyst.It was found that doping of SO~(2-)_4 into TiO_(2) by the Sol-Gel method remarkably improved its structure.The reaction of photo-catalysis for methylene blue is in conformity with the first order kinetic law in appearance within the concentration range between 6 mg/L and 15 mg/L.The appearance rate constant of the reaction decreases and the half-life period of the reaction increases with increasing of initial concentration of methylene blue in water,(respectively). |
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| Keywords: | nano-sized TiO_2 photo-catalytic oxidation kinetics apparent first-order reaction |
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