| 微乳法制备Fe-TiO2纳米晶复合体及光催化性能 |
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| 引用本文： | 马明远,李佑稷,陈伟,李雷勇.微乳法制备Fe-TiO2纳米晶复合体及光催化性能[J].环境工程学报,2010,4(5):1041-1046. |
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| 作者姓名： | 马明远 李佑稷 陈伟 李雷勇 |
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| 作者单位： | 吉首大学化学化工学院,吉首,416000 |
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| 基金项目： | 湖南省教育厅青年基金项目（08B063）;吉首大学研究生基金项目（08JDY022） |
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| 摘 要： | 采用微乳法制备铁掺杂TiO2纳米晶(Fe-TiO2)复合体, 通过热重-差热(TG-DTA)、X射线衍射(XRD)、扫描电镜（SEM）和紫外漫反射光谱(DRS)等对其结构和形态进行表征; 以亚甲基蓝溶液(MB)为标准模拟降解物, 对Fe-TiO2, 纯TiO2和P25光催化降解性能进行评价。结果表明，Fe-TiO2的光催化活性明显＞P25，原因是Fe掺杂不仅能抑制TiO2晶粒
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| 关 键 词： | Fe-TiO2 纳米晶复合体 亚甲基蓝 光催化活性 |
Preparation and photoactivity of Fe-TiO2 nanocrystalline composites by miniemulsion method |
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| Ma Mingyuan,Li Youji,Chen Wei and Li Leiyong.Preparation and photoactivity of Fe-TiO2 nanocrystalline composites by miniemulsion method[J].Techniques and Equipment for Environmental Pollution Control,2010,4(5):1041-1046. |
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| Authors: | Ma Mingyuan Li Youji Chen Wei and Li Leiyong |
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| Institution: | College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000,China,College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000,China,College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000,China and College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000,China |
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| Abstract: | Nanocrystalline Fe-TiO_2 composites were prepared by the miniemulsion method.The obtained photocatalysts were characterized by thermogravimetric-differential thermal analysis(TG-DTA),x-ray diffraction (XRD),scan electronic microphotograph (SEM) and diffuse reflection spectrum(DRS).Photoactivities of FeTiO_2,TiO_2 and P25 were evaluated by degradation of methylene blue (MB) under UV irradiation.The results show that the photoactivity of Fe-TiO_2 is more than that of P25.This is attributed to the fact that the addition of Fe not only retains crystalline growth,improves thermostabilities and surface areas of Fe-TiO_2,but also shifts the excited wavelength of TiO_2 to visible light regions,produces the high content of Ti~(3+) ions and decreases recombination ratio of photo-generated current carrier. |
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| Keywords: | Fe-TiO2 nanocrystalline composite methylene blue photocatalytic activity |
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