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纳米颗粒磁增强SBA-15介孔复合材料的制备及磁性能

, PP. 72-76

Keywords: SBA-15,纳米颗粒,复合材料,介孔材料,微观结构,磁学性能

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Abstract:

利用浸渍法合成了Co3O4/SBA-15和CoFe2O4/SBA-15介孔纳米磁性材料,并利用X射线粉末衍射(XRD)、透射电子显微镜(TEM)、场发射扫描电子显微镜(FESEM)及振动样品磁强计(VSM)对样品的微观结构和磁性能进行了分析。结果显示,Co3O4及CoFe2O4纳米颗粒分布在SBA-15介孔材料的孔道中,可有效提高SBA-15介孔材料的磁性能。研究发现,SBA-15介孔纳米磁性材料的磁特性由掺杂的纳米磁性颗粒的性质决定,其磁性能随Co3O4及CoFe2O4含量的增加而升高,矫顽力可达400Oe,饱和磁化强度达9emu/g。

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