核-壳结构Fe3O4@C磁性纳米颗粒的制备及其结构表征  

Synthesis and characterization of core-shell-structural Fe_3O_4@C magnetic nanoparticles

作　　者：冯娟[1] 李兴华[1] 邓霞[1] 王丽[1] 薛德胜[1] 彭勇[1] 

机构地区：[1]兰州大学物理科学与技术学院磁学与磁性材料教育部重点实验室,甘肃兰州730000

出　　处：《电子显微学报》2012年第5期406-410,共5页Journal of Chinese Electron Microscopy Society

基　　金：国家重大科学研究计划资助项目(No.2012CB93310X);甘肃省自然科学基金资助项目(No.1107RJZA221);中央高校基本科研业务费(No.860521);国家自然科学基金资助项目(No.11034004)

摘　　要：本文利用水热法制备了直径100 nm的核-壳结构Fe3O4@C磁性纳米颗粒。利用TEM(透射电子显微镜)、XRD(X射线衍射仪)技术对其形貌、成份及微观结构进行了分析,利用VSM(振动样品磁强计)对样品的宏观磁性进行了表征。研究结果表明,所制备的Fe3O4@C磁性纳米颗粒呈现核-壳结构,壳碳层的厚度约为15 nm,分散性良好且尺寸均匀,样品的饱和磁化强度为28 emu/g。Fe3O4@C磁性纳米颗粒在生物技术和医学领域具有广泛应用前景。Core-shell-structural Fe3O4@C magnetic nanoparticles were successfully synthesized by a simple hydrothermal method.The morphology,structure,and chemistry of the core-shell-structural Fe3O4@C magnetic nanoparticles were comprehensively characterized by various functions of TEM and XRD techniques.The results show that individual Fe3O4@C nanoparticles have a uniform size and are well dispersed.The average diameter of the Fe3O4@C nanoparticles is approximate 100 nm,among which carbon shell is about 15 nm.The magnetic measurement indicates that the saturation magnetization of the Fe3O4@C nanoparticles is 28 emu/g.It is believed that the Fe3O4@C should have a broad applications in the field of biology and medicines.

关 键 词：Fe3O4@C 核-壳结构 TEM XRD VSM 磁性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]