Synthesis and Characterization of NiFe2O4/SiO2 Core-Shell Nanoparticles

被引：0
|
作者：
Hu Jun [1 ,2 ]
Hu Xijian [1 ]
Ni Zheming [1 ]
机构：
[1] Zhejiang Univ Technol, Hangzhou 310032, Zhejiang, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷
基金：
中国博士后科学基金;
关键词：
ferrite; core-shell structure; magnetic materials; nanoparticles; FERRITE; MN;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanoparticles consisting of a magnetic core of nickel ferrite (NiFe2O4) and a shell of silica (SiO2) were synthesized by reverse microemulsion method. The hydrolysis and condensation of tetraethyl orthosilicate (TEOS) in the mixture led to the encapsulation of NiFe2O4 particles, to form NiFe2O4/SiO2 core-shell nanocomposites. And the microstructure of this nanoparticles were characterized by Powder X-ray diffraction, fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. It was found that the average size of NiFe2O4/SiO2 nanoparticles was ca. 40 nm. The magnetic properties were analyzed by vibration sample magnetometer and the nanoparticles exhibited paramagnetic properties with a total magnetization value of 12.97 (A.m(2)).kg(-1).
引用
收藏
页码：174 / 177
页数：4
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