制备了一种高磁性氧化钛,氧化硅包覆四氧化三铁微球材料(Fe3O4@SiO2@TiO2),并通过透射电子显微镜和扫描电子显微镜对制备的材料进行表征。制备材料具有很好的分散性,可以很好地分散在水溶液中,通过外加磁场,分散的磁性材料可以很快和水体分离。氧化硅和氧化钛两层外壳很好地保护了铁核,因此制备的材料在酸性溶液中有很好的稳定性,可以用来固相萃取冶金废水中的金属离子。 A kind of high magnetic titania and silica coated Fe3O4 @ SiO2 @ TiO2 was prepared. The prepared material was characterized by transmission electron microscopy (SEM) and scanning electron microscopy (SEM). The prepared material has good dispersibility and can be well dispersed in aqueous solution. The dispersed magnetic material can be quickly separated from the water body by applying a magnetic field. The shell of silicon oxide and titanium oxide protect the iron core well, so the prepared material has good stability in acidic solution and can be used for solid-phase extraction of metal ions in the metallurgical wastewater.