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溶剂热法制备了单分散和高磁饱和强度的超顺磁性Fe3O4纳米晶簇,然后在外加磁场的诱导下,通过一锅法方便的实现了Fe3O4纳米晶簇的一维组装和交联型聚膦腈的包覆改性,获得了具有稳定结构的核壳型磁性纳米链。通过红外光谱(FTIR)、透射电镜(TEM)、X射线衍射(XRD)、X射线能谱分析(EDS)、振动样品磁强计(VSM)和热失重分析(TGA)对纳米链的化学组成、形貌、尺寸、磁特性、热稳定性进行了表征。纳米链长度在10μm以上,Fe3O4质量含量约85%,磁饱和强度为64.6emu/g,热稳定性高达380℃。
Solvothermal method was used to prepare superparamagnetic Fe3O4 nanoclusters with monodisperse and high magnetic saturation strength. Then, one-pot assembly of Fe3O4 nanoclusters and cross-linked poly Phosphazene coating modified to obtain a stable structure of the core-shell magnetic nanochain. The chemical composition of the nanochain was characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), vibrating sample magnetometer (VSM) and thermogravimetric analysis (TGA) , Morphology, size, magnetic properties, thermal stability were characterized. The length of nanochain is more than 10μm, the mass fraction of Fe3O4 is about 85%, the magnetic saturation intensity is 64.6 emu / g and the thermal stability is as high as 380 ℃.