| TiO_2/Ce_(0.45)Zr_(0.45)Mn_(0.05)La_(0.05)O_X光催化降解气相苯 |
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| 引用本文： | 钟俊波,卢燕,何锡阳,李建章.TiO_2/Ce_(0.45)Zr_(0.45)Mn_(0.05)La_(0.05)O_X光催化降解气相苯[J].渝西学院学报(自然科学版),2010(2). |
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| 作者姓名： | 钟俊波 卢燕 何锡阳 李建章 |
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| 作者单位： | 绿色催化四川省高校重点实验室;四川理工学院化学与制药工程学院; |
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| 基金项目： | 四川理工学院博士启动基金(07ZR13); 四川省教育厅重大培育项目(07ZZ020) |
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| 摘 要： | 采用等孔体积浸渍法经500℃焙烧得到了负载型光催化剂TiO2/Ce0.45Zr0.45Mn0.05La0.05OX,以气相苯模拟室内挥发性气体,在静态反应装置中考察该催化剂对气相苯的光催化降解性能,结果表明,TiO2负载在TiO2/Ce0.45Zr0.45Mn0.05La0.05OX上能显著提高对苯的光催化降解性能,TiO2/Ce0.45Zr0.45Mn0.05La0.05OX上苯降解率是纯TiO2上的2.8倍.XRD结果显示没有检测到TiO2的衍射峰.TiO2结合能向低值移动、负载型光催化剂在紫外-可见区吸收增强、表面氧物种增多和晶格缺陷增多可能是该催化剂能显著提高光催化活性和延长寿命的重要原因.
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| 关 键 词： | 二氧化钛 苯 光催化氧化 储氧材料 |
Photocatalytic oxidation of gaseous benzene over titanium dioxide loaded on Ce_(0.45)Zr_(0.45)Mn_(0.05)La_(0.05)O_X |
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| Authors: | ZHONG Jun-bo LU Yan HE Xi-yang LI Jian-zhang |
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| Institution: | ZHONG Jun-bo1,2,LU Yan1,HE Xi-yang1,LI Jian-zhang1,2(1.Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan,Zigong Sichuan 643000,China,2.College of Chemistry , Pharmaceutical Engineering,Sichuan University of Science , Engineering,China) |
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| Abstract: | A novel photocatalyst by loading of TiO2 onto the oxygen storage material Ce0.45Zr0.45Mn0.05La0.05OX was prepared by pore impregnating method using tetrabutyl titanate as material and tested for its catalytic performance with benzene as the simulated gas in a batch reactor.The results reveal that conversion of benzene on TiO2/Ce0.45Zr0.45Mn0.05La0.05OX is 2.8 times of that on TiO2.Loading TiO2 onto the oxygen storage material Ce0.45Zr0.45Mn0.05La0.05OX can greatly prolong the lifetime of photocatalyst and e... |
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| Keywords: | titanium dioxide benzene photocatalytic oxidation oxygen storage material |
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