| 离子掺杂对纳米TiO2薄膜光催化性能的影响 |
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| 引用本文： | 许珂敬,杨新春,李正民.离子掺杂对纳米TiO2薄膜光催化性能的影响[J].中国有色金属学报,2006,16(5):847-852. |
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| 作者姓名： | 许珂敬 杨新春 李正民 |
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| 作者单位： | 山东理工大学,材料科学与工程学院,淄博,255049 |
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| 摘 要： | 采用溶胶凝胶法制备含有不同掺杂离子的TiO2溶胶和纳米粉,采用浸渍提拉法将溶胶涂敷在自制的多孔陶瓷膜件上,考察其对蚁酸溶液(1%)的光降解作用。研究结果表明,在适宜掺杂浓度(1?3 ,0.5%La3 (摩尔浓度))下,Fe3 /La3 -TiO2膜的光催化性能最好。采用X射线衍射仪分析、原子力电子显微镜和吸收光谱仪等研究单独掺杂Fe3 、La3 和复合掺杂Fe3 /La3 离子的作用及膜的性能,从而确定出提高TiO2光催化活性的最佳掺杂工艺。
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| 关 键 词： | TiO2薄膜 光催化活性 离子掺杂 电子-空穴对 烧结温度 |
| 文章编号： | 1004-0609（2006）05-0847-06 |
| 收稿时间： | 2005-09-08 |
| 修稿时间： | 2006-03-02 |
Influence of different ion dopants on photocatalysis of nano-TiO2 coating film |
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| XU Ke-jing,YANG Xin-chun,LI Zheng-min.Influence of different ion dopants on photocatalysis of nano-TiO2 coating film[J].The Chinese Journal of Nonferrous Metals,2006,16(5):847-852. |
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| Authors: | XU Ke-jing YANG Xin-chun LI Zheng-min |
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| Affiliation: | School of Materials Science and Technology, Shandong University of Technology, Zibo 255049, China |
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| Abstract: | The TiO_2 sol and nano-powders with different dopants were prepared by sol-gel method.The nano-film was coated on the self-made porous ceramic by dipping-lift process.The photodegradation of formic acid solution(1%) on TiO_2 film with different dopants was studied.The results show that the Fe~(3 )/La~(3 )-TiO_2 film with the appropriate doping concentration(1?~(3 ),0.5%La~(3 )(mole fraction)) has better photocatalytic activity.The roles and mechanism of doping Fe~(3 ),La~(3 ) and co-doping Fe~(3 )/La~(3 ) ions were studied by XRD and absorption spectra.And the appropriate doping procedure for increasing TiO_2 photocatalytic activity was determined. |
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| Keywords: | TiO_2 coating film photocatalytic activity ions doping electron-cave pairs sintering temperature |
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