用溶胶-凝胶法在表面包覆了SiO2的磁基体Fe3O4上负载TiO2,从而得到了易于磁性固液分离的光催化剂TiO2/SiO2/Fe3O4,并通过XPS、XRD、TEM、IR和UV-Vis等测试对样品进行了表征. 研究了磁载光催化剂TiO2/SiO2/Fe3O4在太阳光和紫外光下,对染料Orange-Ⅱ的脱色作用. 结果表明,在Fe3O4和TiO2之间包覆一层无定型SiO2,可使催化剂的脱色率由73.1%提高到99.8%.
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