Fabrication and Characterization of Core-shell Fe3O4@SiO2 Nanoparticles with High Magnetic Sensitivity from Electrospun Nanoflbers

被引：0

作者：

Zhang Pei-pei ^{[1
]}

Wang Bin ^{[1
]}

Lou Shao-feng ^{[1
]}

Tian Li-qiang ^{[1
]}

Quan Jing ^{[1
,2
]}

Nie Hua-li ^{[1
,2
]}

Zhu Li-Min ^{[1
,2
]}

机构：

[1] Donghua Univ, Coll Chem Chem Engn & Biotechnol, Shanghai, Peoples R China

[2] Donghua Univ, Key Lab Text Sci & Technol, Minist Educ, Shanghai, Peoples R China

来源：

2012 INTERNATIONAL FORUM ON BIOMEDICAL TEXTILE MATERIALS, PROCEEDINGS | 2012年

基金：

中国国家自然科学基金;

关键词：

Electrospinning; Magnetic nanoparticles; High magnetic sensitivity; IRON-OXIDE NANOPARTICLES; SOL-GEL APPROACH; SILICA; NANOFIBERS;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We fabricated the self-assembled Fe3O4@SiO2 magnetic composite particles with high magnetic sensitivity from electrospun nanofibers. The morphology of the fibers was characterized by SEM. The size distribution, morphology and magnetic characteristics of the nanoparticles were determined with FE-SEM, TEM, and VSM, respectively. The results showed that the composite nanoparticles have approximately spherical shapes with many magnetic cores inside them. The size distribution of the nanoparticles averaged around 45 nm. The typical saturation magnetization of the Fe3O4@SiO2 composite particles is up to 43.8 emu/g, with superparamagnetic properties being observed at room temperature. Since the nanoparticles have high magnetic sensitivity, they have much promise for use in a wide range of applications.

引用

页码：150 / 153

页数：4

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