| 模拟室内环境下掺杂TiO2纳米晶体的光催化性能 |
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| 引用本文： | 张浩,赵江平,王智懿.模拟室内环境下掺杂TiO2纳米晶体的光催化性能[J].环境工程学报,2009,3(9):1643-1647. |
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| 作者姓名： | 张浩 赵江平 王智懿 |
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| 作者单位： | 1. 西安建筑科技大学西部建筑科技国家重点实验培育基地,西安710055;西安建筑科技大学劳动安全卫生研究所,西安710055
2. 西安建筑科技大学劳动安全卫生研究所,西安,710055 |
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| 摘 要： | 采用环境测试舱模拟可见光下的室内环境,以甲醛气体的光催化降解为探针反应,评价了通过溶胶-凝胶法分别制备的8种(银Ag、铜Cu、铁Fe、钨W、铈Ce、镧La、硫S和氯C1)掺杂TiO2纳米晶体的光催化活性及对甲醛气体的去除效果.用X射线衍射、激光粒度分析和紫外-可见分光光谱表征了掺杂钠米TiO2的微晶尺寸、晶体结构与光学性能.结果表明,Cu掺杂可以提高TiO2对氧的吸附能力,减少纳米粒子表面光生电子与光生空穴的复合,使TiO2的光吸收带边发生红移且有利于对可见光的吸收,从而使Cu掺杂TiO2在模拟室内环境下光催化甲醛气体的能力得到明显提高.
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| 关 键 词： | 二氧化钛 掺杂TiO2 光催化 模拟室内环境 |
Photocatalytic activity of doped TiO2 nanocrystallites insimulated indoor environment |
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| Zhang Hao,Zhao Jiangping and Wang Zhiyi.Photocatalytic activity of doped TiO2 nanocrystallites insimulated indoor environment[J].Techniques and Equipment for Environmental Pollution Control,2009,3(9):1643-1647. |
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| Authors: | Zhang Hao Zhao Jiangping and Wang Zhiyi |
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| Abstract: | TiO2 nanocrystallite photocatalysts doped with Ag,Cu,Fe,W,Ce,La,S,Cl respectively were prepared by sol-gel method.The photocatalytic activites of the photocatalyst samples were determined and removal effect of formaldehyde was investigated by the photocatalytic decomposition of gas formaldehyde in the environmental chamber using a visible lamp.The characteristics of the samples were characterized by mean of X-ray diffraction,laser particle size analyze and ultraviolet-visible diffuse reflection techniques.T... |
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| Keywords: | titanium oxide doped-TiO2 photocatalysis simulate indoor environment |
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