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采用液相还原的方法,在碱性环境下使用FeCl2.4H2O和氧化石墨作为前驱体,制备Fe3O4微球附载的石墨烯复合材料。通过调节氧化石墨和铁盐的质量比制备得到不同组分的Fe3O4/石墨烯复合粉体。使用场发射电子扫描显微镜(FESEM)、X射线衍射仪(XRD)、振动样品磁强计(VSM)和四探针电阻仪等仪器分析了产物的形貌、物相、磁性能和导电性能。结果表明Fe3O4/石墨烯复合粉体中Fe3O4微球在石墨烯表面分散均匀,且Fe3O4结晶良好,为立方晶系的尖晶石型。该复合粉体具有高的磁性能和良好的导电性能,饱和磁化强度和电导率分别达到72emu/g和0.53S/cm。
A liquid phase reduction method was used to prepare a graphene composite supported on Fe3O4 microspheres by using FeCl2.4H2O and graphite oxide as precursors under an alkaline environment. The Fe3O4 / graphene composite powders with different components were prepared by adjusting the mass ratio of graphite oxide and iron salt. The morphology, phase, magnetic and electrical conductivity of the product were analyzed by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and four- The results show that the Fe3O4 microspheres in the Fe3O4 / graphene composite powders are uniformly dispersed on the surface of graphene, and the crystal of Fe3O4 is well crystallized, which is a cubic spinel. The composite powder has high magnetic properties and good electrical conductivity, and the saturation magnetization and the electrical conductivity reach 72 emu / g and 0.53 S / cm, respectively.