以葡萄糖为碳源，以聚乙烯吡咯烷酮（ PVP）为表面活性剂，在碱性条件下用水合肼还原氯化铁，采用两步水热法制备Fe3 O4/C磁性纳米粒子，并采用X-射线衍射仪（ XRD）、扫描电子显微镜（ SEM）、透射电子显微镜（ TEM）对产物进行表征。结果表明：产物为碳包覆纳米四氧化三铁核壳结构，其直径为300～600 nm，晶化程度较高。%Carbon encapsulated magnetite nanoparticles are synthesized via hydrothermal process two -step synthesis method with glucose for carbon sources, PVP for surfactant, and hydrazine hydrate as reducing agent for ferric chloride in alkaline condi-tion.The morphologies and structures of the products are characterized by X -ray diffraction (XRD),scanning electron microsco-py (SEM) and transmission electron microscopy (TEM).The Fe3O4/C core-shell materials with the diameters of 300~600nm, which have a high crystallization degree.
展开▼
