| 纳米TiO2光催化降解亚甲基蓝 |
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| 引用本文： | 邱克辉,邹璇,张佩聪,王彦梅.纳米TiO2光催化降解亚甲基蓝[J].矿物岩石,2007,27(4):13-16. |
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| 作者姓名： | 邱克辉 邹璇 张佩聪 王彦梅 |
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| 作者单位： | 成都理工大学材料科学技术研究所,四川,成都,610059 |
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| 基金项目： | 四川省重点科技攻关项目(编号:04GG009-020-01) |
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| 摘 要： | 在以钛酸丁酯为钛源,采用溶胶-凝胶法合成制备纳米TiO2催化剂样品的基础上,将其用于在紫外光照射和无光照射条件下进行亚甲基蓝降解的实验研究,并与P-25纳米TiO2进行光催化降解对比研究。对在不同条件下合成制备样品的光催化降解率的差异,通过X射线粉晶衍射、扫描电镜等从物相组成、微观结构等因素上进行了分析和探讨。结果表明,采用溶胶-凝胶法在450℃焙烧2 h所得到的纳米TiO2具有很好的光催化降解亚甲基蓝的能力,当催化剂样品质量浓度为2.5 g/L,亚甲基蓝初始浓度为5.0 mg/L时,室温下光催化反应3 h,其降解率达98%以上,其光催化降解率比P-25纳米TiO2高;光催化降解率与催化剂样品的制备条件、物相组成、颗粒尺寸等因素有关。
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| 关 键 词： | 纳米TiO2 溶胶-凝胶法 光催化降解 亚甲基蓝 |
| 文章编号： | 1001-6872（2007）04-0013-04 |
| 收稿时间： | 2007-07-07 |
| 修稿时间： | 2007-10-11 |
PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE SOLUTION BY TITANIA FINE PARTICLES |
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| QIU Ke-hui,ZOU Xuan,ZHANG Pei-cong,WANG Yan-mei.PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE SOLUTION BY TITANIA FINE PARTICLES[J].Journal of Mineralogy and Petrology,2007,27(4):13-16. |
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| Authors: | QIU Ke-hui ZOU Xuan ZHANG Pei-cong WANG Yan-mei |
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| Abstract: | In the paper,degradation of Methylene Blue in solution by nano-TiO2 fine particles was reported.The Titania photocatalytic fine particles were prepared by a sol-gel process using Tetrabutyl titanate as raw material.X-ray diffraction and Scanning Electronic Microscope were used to investigate the microstructure and crystallization behavior of the titanium dioxide powders.Photocatalytic degradation of Methylene Blue Trihydrate by nano-TiO2 particles in various conditions such as obtained in different calcined temperature,nano-TiO2 concentration and the initial concentration of Methylene Blue Trihydrate in solution were evaluated.The results showed that the nano-TiO2 powders has an excellent photocatalytic activity for degradation of the Methylene Blue Trihydrate.Degradation rate of the 5.0 mg/L Methylene Blue Trihydrate solution is about 100% by 0.1 mg/L nano-TiO2 particles under UV irrigation for 3 h at room temperature condition. |
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| Keywords: | TiO2 nano-particles sol-gel method photocatalytic degradation Methylene Blue |
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