| 超声辅助La-TiO_2/膨胀珍珠岩的吸附与光催化性能 |
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| 引用本文： | 井强山,方林霞,王春.超声辅助La-TiO_2/膨胀珍珠岩的吸附与光催化性能[J].环境污染治理技术与设备,2012(4):1241-1244. |
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| 作者姓名： | 井强山 方林霞 王春 |
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| 作者单位： | [1]信阳师范学院非金属材料研究所,信阳464000 [2]信阳师范学院河南省珍珠岩制品工程技术研究中心,信阳464000 |
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| 基金项目： | 基金项目：河南省科技攻关重点项目（082102340005）;河南省教育厅自然科学研究项目（2010A150019） |
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| 摘 要： | 以膨胀珍珠岩（expanded perlite,EP）为载体,以钛酸正丁酯和硝酸镧为前驱体,采用浸渍法制备出掺杂镧的漂浮型La-TiO2/EP光催化剂,采用X-射线粉末衍射研究了催化剂的形态结构。以正辛烷为模拟水面烃类污染物,通过超声波辅助对此催化剂的吸附与光催化性能进行了研究。结果表明：以20～40目的膨胀珍珠岩为载体制备的5%La-TiO2/EP,经500℃焙烧2 h后对辛烷的去除效果最好。超声波可促进辛烷在催化剂表面的吸附与迁移,超声辅助下辛烷去除率可提高11.08%。
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| 关 键 词： | 膨胀珍珠岩 二氧化钛 镧 光催化 超声波 辛烷 |
Adsorption and photocatalytic properties of La-TiO2/EP with ultrasonic wave assistance |
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| Jing Qiangshan,Fang Linxia,Wang Chun.Adsorption and photocatalytic properties of La-TiO2/EP with ultrasonic wave assistance[J].Techniques and Equipment for Environmental Pollution Control,2012(4):1241-1244. |
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| Authors: | Jing Qiangshan Fang Linxia Wang Chun |
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| Institution: | 1(1.Institute of Non-metal Materials,Xinyang Normal University,Xinyang 464000,China;2.Engineering Technology Research Center of Expanded Product,Xinyang Normal University,Xinyang 464000,China) |
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| Abstract: | Floating La-TiO2/EP photocatalyst was prepared by impregnation method with expanded perlite（EP） as support and tetrabutyl titanate as precursor.The crystalphase and morphology of samples were characterized by X-ray diffraction（XRD）.Adsorption and photocatalytic performance of the La-TiO2/EP catalysts were evaluated by degradation of octane on water with the ultrasonic wave assistance.The experimental results indicate that the 5%La-TiO2/EP catalyst using the expanded perlite of 20~40 mesh as support and calcinated at 500 ℃ for 2 h has the best activity.The adsorption and migration of octane in catalyst surface is promoted by the ultrasonic wave,11.08% of octane is additionally removed with the help of ultrasonic wave. |
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| Keywords: | expanded perlite TiO2 lanthanum photocatalysis ultrasonic octane |
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