| 载银TiO_2可见光降解活性蓝染料废水研究 |
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| 引用本文： | 王仪春,陈建林,杨凯,程莹莹,杨英杰.载银TiO_2可见光降解活性蓝染料废水研究[J].环境科学与技术,2006,29(11):86-88. |
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| 作者姓名： | 王仪春 陈建林 杨凯 程莹莹 杨英杰 |
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| 作者单位： | 南京大学环境学院污染控制与资源化国家重点实验室,南京,210093 |
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| 摘 要： | 以溶胶-凝胶法制备了Ag/TiO2纳米催化剂,以日光色镝灯为光源,研究了活性蓝M-2GE模拟染料废水的可见光降解,考察了不同条件对可见光降解的影响。实验结果表明,该方法制备的TiO2、Ag/TiO2催化剂粒径约20～30nm,主要以锐钛矿相存在;光催化反应的最佳条件为:催化剂载Ag量2%,投加量为2g/L,pH值在2～6;在最佳的反应条件下,活性蓝的脱色率达98%,TOC去除率达70%;在实验的浓度范围内,服从一级反应动力学,随着染料溶液浓度的增大,表观速率常数不断降低。
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| 关 键 词： | 光催化 可见光 二氧化钛 Ag/TiO_2 |
| 文章编号： | 1003-6504(2006)11-0086-03 |
| 收稿时间： | 2006-01-04 |
| 修稿时间： | 2006-03-28 |
Photo-catalytic Degradation of Active-blue Dye in Aqueous Solution with Ag-loaded TiO2 |
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| WANG Yi-chun,CHEN Jian-lin,YANG Kai,CHENG Ying-ying,YANG Ying-jie.Photo-catalytic Degradation of Active-blue Dye in Aqueous Solution with Ag-loaded TiO2[J].Environmental Science and Technology,2006,29(11):86-88. |
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| Authors: | WANG Yi-chun CHEN Jian-lin YANG Kai CHENG Ying-ying YANG Ying-jie |
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| Abstract: | This paper relates to an experimental study on phtocatalytic degradation of dye-containing wastewater using a special catalyst,silver-loaded TiO2 which is prepared by sol-gel method in the lab,and being irradiated by daylight source from a dysprosium lamp.The degrading reaction fits the first-order kinetics well within the range of examined concentrations and the degradation rate decreases with the increase of solution concentration. |
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| Keywords: | phtocatalysis visible light titanium dioxide Ag-loaded TiO2 |
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