Au包覆Fe_3O_4纳米颗粒的制备及磁性研究  

Preparation and Study of Magnetic Properties of Fe_3O_4@Au Nanoparticles

作　　者：刘洋[1] 寇艺川 寇蔷薇 张媛媛[1] 杨景海[1] 

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2017年第2期24-27,共4页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(21676115;21546013;51609100);吉林省科技厅自然科学基金项目(20160101287JC)

摘　　要：四氧化三铁(Fe_3O_4)作为一种重要的磁性材料,由于其优良的物理和化学性质,被广泛应用于生物、磁流体、医学等多个领域.Fe_3O_4@Au复合材料的引入不仅可以克服铁氧化物稳定性差、易团聚等缺点,并且使该材料具备了良好的生物相容性.本文制备了尺寸均一的亚铁磁性立方体形状的Fe_3O_4纳米颗粒,并以PEI-DTC作为粘合层,成功将Au粒子均匀包覆在Fe_3O_4表面.利用透射电子显微镜(TEM)、X射线衍射仪(XRD)、紫外分光光度计(UV-vis)、SQUID-VSM磁性测量系统研究了包覆Au纳米粒子对Fe_3O_4结构和磁性的影响.Magnetite （Fe3O4） is an important magnetic material. Due to the superior physical and chemical properties, Fe3O4 nanopartictes are widely used in various fields, such as biology, magnetic fluid and medical science ,etc. Fe3O4@ Au composite materials not only can overcome the shortcomings of iron oxides with poor stability and easy aggregation, but also have good biocompatibility. In this paper, we prepared well-size- distributed ferrimagnetic Fe3O4 nanoparticles with the cubic shapes. By using the PEI-DTC as glue layer,gold nanoparticles were attached on the surface of Fe3Onsucessfully. The effects of the gold nanoparticles on the morphology and magnetism of Fe3O4 nanoparticles were studied by transmission electron microscope （ TEM）, X-ray diffractometer uhraviolet-visibte light detector （UV,vis） and SQUID2VSM magnetic measuring system.

关 键 词：AU FE3O4纳米颗粒 形貌 磁性 

分 类 号：O482.54[一般工业技术—材料科学与工程]