| 铈离子光催化降解茜素绿的性能和机理 |
| |
| 引用本文： | 钟恒,曹文彪,熊重铎,夏东升,曾庆福,徐爱华.铈离子光催化降解茜素绿的性能和机理[J].环境污染治理技术与设备,2014(2):448-452. |
| |
| 作者姓名： | 钟恒 曹文彪 熊重铎 夏东升 曾庆福 徐爱华 |
| |
| 作者单位： | 武汉纺织大学环境工程学院,武汉430200 |
| |
| 基金项目： | 国家自然科学基金资助项目（50978208） |
| |
| 摘 要： | 主要研究了简单铈离子（Ce3＋）在紫外光（uv）的作用下对蒽醌染料茜素绿（AG）的光催化降解效果和反应机理。结果表明，UV／Ce3＋体系能够有效降解AG，初始反应速率随AG浓度的倒数值和Ce3＋浓度的增加而线性增加，随初始溶液pH的增加先降低后增加，在酸性条件下有很高的TOC去除率。荧光探针实验表明，反应过程中可以产生·OH自由基。UV／Ce3＋体系对其他类型染料和对硝基苯酚都有较好的降解效果。
|
| 关 键 词： | 铈离子 光催化 茜素绿 降解 羟基自由基 |
Activity and mechanism of photocatalytic degradation of Alizarin Green by cerium ions |
| |
| Zhong Heng,Cao Wenbiao,Xiong Zhongduo,Xia Dongsheng,Zeng Qingfu,Xu Aihua.Activity and mechanism of photocatalytic degradation of Alizarin Green by cerium ions[J].Techniques and Equipment for Environmental Pollution Control,2014(2):448-452. |
| |
| Authors: | Zhong Heng Cao Wenbiao Xiong Zhongduo Xia Dongsheng Zeng Qingfu Xu Aihua |
| |
| Institution: | (School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China) |
| |
| Abstract: | The effect and mechanism of anthraquinone dye alizarin green （AG） degradation by Ce3＋ ions under UV irradiation were studied. It was found that the dye could be degraded efficiently by the UV/Ce3＋ sys- tem. The initial reaction rate increased linearly with the increasing of the inverse value of AG concentration and Ce3 ＋concentration, respectively ; while with the initial pH of the solution increasing, it first decreased dramatic- ally and then increased slowly. A high TOC removal rate was obtained under acid conditions. The fluorescent ex- periments showed that · OH radicals was produced during AG degradation. The UV/Ce3＋ system was also effi- cient for degradation of other organic dyes and p-nitrophenol. |
| |
| Keywords: | cerium ions photocatalysis alizarin green degradation ·OH radical |
| 本文献已被 维普 等数据库收录！ |
|
