PREPARATION AND CHARACTERIZATION OF MONODISPERSE core-SHELL Fe3O4/SiO2 MICROSPHERES

被引：0

作者：

Li Chuanyan ^{[1
,2
]}

Ma Chao ^{[2
,3
]}

Wang Fang ^{[2
]}

Xi Zhijiang ^{[2
]}

He Nongyue ^{[2
]}

机构：

[1] Southeast Univ, Sch Publ Hlth, Nanjing 210096, Jiangsu, Peoples R China

[2] Sch Biol Sci & Med Engn, State Key Lab Bioelect, Nanjing 210096, Jiangsu, Peoples R China

[3] Guangdong Univ Petrochem Technol, Sch Chem & Life Sci, Maoming 525000, Peoples R China

来源：

PROGRESS ON POST-GENOME TECHNOLOGIES AND MODERN NATURAL PRODUCTS, 2011 | 2011年

关键词：

Magnetic nanoparticles; Core/shell structure; Silica; Saturation magnetization; NANOPARTICLES;

D O I：

暂无

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

This paper describes a facile route to prepare monodisperse core-shell Fe3O4/SiO2 microspheres with uniform size and shape. The morphology and structures of the products were characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The results show that spherical Fe3O4/SiO2 microspheres have a well-defined core-shell structure and a much smoother surface with well dispersion and a mean particle size of similar to 600 nm. Furthermore, VSM measurements indicated that the as-prepared Fe3O4 and Fe3O4@SiO2 microspheres were superparamagnetic at room temperature and the saturation magnetization (Ms) were 58. 110 emu/g and 33. 479 emu/g respectively.

引用

页码：121 / 122

页数：2

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