Preparation and Characterization of Nanometer-sized Magnetic Photocatalyst
Preparation and Characterization of Nanometer-sized Magnetic Photocatalyst
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DOI：
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发表时间：
2004
影响因子：
1.7
通讯作者：
Liao Zhen
中科院分区：
文献类型：
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作者：
Liao Zhen
以纳米Fe3O4为载体，采用溶胶-凝胶法制备了TiO2SiO_2/Fe3O4包覆粒子。用X射线衍射仪、透射电子显微镜和元素分析等方法对其结构和形貌进行了表征。以甲基橙为光催化剂，考察了TiO2/SiO_2/Fe_3O_4的光催化活性。结果表明，二氧化钛/二氧化硅/四氧化二铁双层包覆粒子由二氧化硅中间层和锐钛矿型二氧化钛结壳组成。新型光催化剂不仅具有优异的光催化活性，而且具有良好的磁性，易于回收。
By using nanometer-sized Fe3O4 as support, TiO2/SiO2/Fe3O4 coated particles were prepared by a sol-gel method. Its structure and morphology were characterized by XRD, TEM, and element analysis methods. The photocatalytic reactivity of TiO2/SiO2/Fe3O4 was studied with methyl orange solution. The results indicate that the TiO2/SiO2/FesO4 two-double coated particles are composed of SiO2 mesosphere and anatase TiO2 crust. The new photocatalyst has not only excellent photocatalytic activity but also good magnetic property that can make the callback easy.