Preparation and properties of a nano TiO_2/Fe_3O_4 composite superparamagnetic photocatalyst

查看全文 作　　者：LI [1]Yuxiang;ZHANG [1]Mei;GUO [1]Min;WANG [1,2]Xidong

机构地区：[1]School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;[2]College of Engineering, Peking University, Beijing 100871, China

出　　处：《Rare Metals》索引2009年第28卷第5期,共5页

基　　金：supported by the National Natural Science Foundation of China (Nos. 50872011, 50402022, and 50672006);the National Basic Research Program of China (No. 2007CB613608) 摘　　要：Nano TiO2/Fe3O4 composite particles with different molar ratios of TiO2 to Fe3O4 were prepared via sol-gel method. X-ray diffraction, transmission electron microscopy, and vibration sample magnetometry were used to characterize the TiO2/Fe3O4 particles. The photocatalytic activity of the particles was tested by degrading methyl blue solution under UV illumination (254 nm). The results indicate that with the content of TiO2 increasing, the photocatalytic activity of the composite particles enhances, while the magnetism of the particles decreases. When the molar ratio of TiO2 to Fe3O4 is about 8, both the photocatalytic activity and magnetism of the TiO2/Fe3O4 particles are relatively high, and their photocatalytic activity remains well after repeated use. 关键词：光催化剂复合材料性能超顺磁性纳米制备光催化活性透射电子显微镜 FE3O4

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Preparation and properties of a nano TiO_2/Fe_3O_4 composite superparamagnetic photocatalyst

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