| 碘掺杂TiO2可见光光催化性能研究 |
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| 引用本文： | 蒋悦,贾漫珂,邹彩琼,罗光富,黄应平,张爱清.碘掺杂TiO2可见光光催化性能研究[J].环境工程学报,2013,7(3):975-980. |
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| 作者姓名： | 蒋悦 贾漫珂 邹彩琼 罗光富 黄应平 张爱清 |
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| 作者单位： | 1. 三峡大学,三峡库区生态环境教育部工程研究中心,宜昌443002
2. 中南民族大学,催化材料科学湖北省暨国家民委-教育部共建重点实验室,武汉430070 |
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| 基金项目： | 国家自然科学基金资助项目(20877048,21177072);湖北省创新群体项目(2009CDA020);湖北省高等学校优秀中青年科技创新团队计划(T200703) |
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| 摘 要： | 在低于100℃温度条件下,采用溶胶-凝胶法以钛酸正丁酯为钛源,碘酸钾为碘源,制备了I掺杂纳米TiO2催化剂(I-TiO2),运用X-射线衍射(XRD)、透射电镜(TEM)及X-射线光电子能谱(XPS)等对催化剂进行表征,结果表明,TiO2及I-TiO2催化剂均为锐钛矿,I吸附并包裹在TiO2表面或以间隙进入的形式存在,并未进入TiO2晶格。通过在可见光照射下(λ>420 nm)以罗丹明B(Rhodamine B,RhB)的光催化降解为探针反应研究了在不同条件下制备催化剂的催化性能,结果表明,掺杂比为nI:nTi=0.05∶1,焙烧温度为400℃,降解介质条件pH=7时,I-TiO2光催化活性明显优于未掺杂的TiO2。光催化降解过程通过红外光谱(IR),总有机碳(TOC)跟踪测定,比较了TiO2掺杂前后降解RhB和对氯苯酚(4-CP)的光催化特性差异;同时采用苯甲酸荧光光度法跟踪测定体系中的氧化物种,表明在可见光下,I-TiO2光催化体系中产生.OH高活性氧化物种从而氧化降解目标化合物。
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| 关 键 词： | 二氧化钛 碘掺杂 光催化 降解 |
| 收稿时间： | 7/9/2011 12:00:00 AM |
Photocatalytic activity of iodine-doped TiO2 under visible radiation |
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| Jiang Yue,Jia Manke,Zou Caiqiong,Luo Guangfu,Huang Yingping and Zhang Aiqing.Photocatalytic activity of iodine-doped TiO2 under visible radiation[J].Techniques and Equipment for Environmental Pollution Control,2013,7(3):975-980. |
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| Authors: | Jiang Yue Jia Manke Zou Caiqiong Luo Guangfu Huang Yingping and Zhang Aiqing |
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| Institution: | Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China;Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central Univercity for Nationalities, Wuhan 430070, China |
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| Abstract: | |
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| Keywords: | TiO2 iodine-doped photocatalysis degradation |
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