| TiO2光催化剂在污水处理领域中应用 |
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| 引用本文： | 王德胜.TiO2光催化剂在污水处理领域中应用[J].阜阳师范学院学报(自然科学版),2008,25(3):49-52. |
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| 作者姓名： | 王德胜 |
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| 作者单位： | 亳州市产品质量监督检验所,安徽,亳州236028 |
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| 摘 要： | 分析了TiO2光催化技术研究现状,探讨了光催化反应机制,并讨论了影响TiO2光催化反应活性的主要因素：（1）贵金属沉积可以提高催化剂表面光生载流子的分离效率,有利于生成更多的.OH;（2）金属离子掺入TiO2晶格中可能引起晶格位置缺陷或改变结晶度,抑制了电子与空穴的复合,延长载流子的寿命,从而使光催化的性能得以改善;（3）半导体复合可以提高系统的电荷分离效果,扩大对光谱的吸收范围;（4）晶粒尺寸小,光生电子和空穴从TiO2体内扩散到表面的时间短,它们在TiO2体内的复合几率减小,光催化活性高.
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| 关 键 词： | 光催化 功能材料 贵金属沉积 金属离子掺杂 |
Application of Photocatalyst of TiO2 in Field of Sewage Treatment |
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| WANG De-sheng.Application of Photocatalyst of TiO2 in Field of Sewage Treatment[J].Journal of Fuyang Teachers College:Natural Science,2008,25(3):49-52. |
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| Authors: | WANG De-sheng |
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| Institution: | WANG De-sheng (Supervising and Testing Institute of Quality of Product ,Bozhou Anhui 286028 ,China) |
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| Abstract: | Nano-TiO2 is a kind of the functional material with high efficiency and economizing energy for the photocatalytic technology.The present advance of photocatalytic technology and the mechanism of photocatalytic reaction are summarized.The primary facts affecting the photocatalytic activity of nano-TiO2 are discussed.(1)Depositing of noble metals can promote separating efficiency of current carriers on the surface of TiO2.(2)Metal ions doped enter into the crystal lattices of TiO2 to cause the defect of cryst... |
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| Keywords: | photocatalysis functional material depositing of noble metal doping of metalion |
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