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以磺化聚苯乙烯微球(SPS)为载体,FeCl3·6H2O和FeSO4·7H2O为铁源,NaOH为沉淀剂,通过反相共沉淀法制备了Fe3O4/SPS微纳米原位复合物。采用SEM、TEM、XRD、FTIR、VSM和氮吸附/脱附等温线,对Fe3O4/SPS的形貌、结构、磁性能、孔径、孔体积和比表面积进行了表征分析。结果表明:纳米级的Fe3O4成功地负载在了微米级的SPS表面。所制备的Fe3O4/SPS微纳米复合物中存在介孔,平均孔径、孔体积和比表面积分别为13.85nm、0.049cm3/g和14.16m2/g。Fe3O4/SPS微纳米复合物具有超顺磁性和较好的磁响应性,在外加磁场条件下能够满足固液相磁分离的要求。
Fe3O4 / SPS micro-nanocomposite in situ was prepared by sulfonated polystyrene microspheres (SPS) as carrier, FeCl3 · 6H2O and FeSO4 · 7H2O as iron source and NaOH as precipitating agent. The morphology, structure, magnetic properties, pore size, pore volume and specific surface area of Fe3O4 / SPS were characterized by SEM, TEM, XRD, FTIR, VSM and nitrogen adsorption / desorption isotherms. The results show that nano-scale Fe3O4 was successfully loaded on the micrometer SPS surface. The prepared Fe3O4 / SPS micro-nano composite mesopores, average pore size, pore volume and specific surface area were 13.85nm, 0.049cm3 / g and 14.16m2 / g. Fe3O4 / SPS micro-nano composite with super paramagnetism and good magnetic response, under the conditions of applied magnetic field to meet the solid-liquid magnetic separation requirements.