摘要
采用共沉淀法制备Fe3O4磁性纳米颗粒,并在此基础上采用柠檬酸钠还原HAuCl4的方法制备Fe3O4@Au核壳纳米颗粒。通过透射电镜(TEM)、能量衍射光谱(EDS)、傅立叶变换红外光谱(FT-IR)、X-射线衍射仪(XRD)分别对产物的形貌、结构和组成等性质进行表征。结果表明:Au成功包裹在Fe3O4纳米颗粒表面,所制得的Fe3O4@Au核壳纳米颗粒在水中的分散性较好,粒径比较均匀,为(15±5)nm;且当Fe3O4和Au摩尔比为5∶1时,制备的Fe3O4@Au核壳纳米颗粒的磁性较好。
Fe3O4 magnetic nano-particles were prepared by co-precipitation method and then the above particel was used as seeding materials for the reduction of gold precursors to produce gold-coated Fe3O4 nano-particles（Fe3O4@Au）.The synthesized nano-particles were characterized by transmission electron microscopy（TEM）,energy dispersive spectrometer（EDS）,fourier-transform infrared（FTIR） spectrum and X-ray diffraction.The Fe3O4@Au nano-particles have a particle size of（15±5） nm and can be quickly separated in solution by an external magnet.The Fe3O4@Au particle has the better magnetism when the mole ratio of Fe3O4 and Au is 5 ∶ 1.
出处
《热加工工艺》
CSCD
北大核心
2011年第8期99-100,103,共3页
Hot Working Technology
基金
江南大学食品科学与技术国家重点实验室开放课题资助项目(SKLF-KF200910)
