Synthesis and characterization of magnetic nanoparticles coated with a uniform silica shell

被引:31
作者
Bonini, Massimo
Wiedemann, Albrecht
Baglioni, Piero
机构
[1] Univ Florence, Dept Chem, I-50019 Sesto Fiorentino, Florence, Italy
[2] Univ Florence, CSGI, I-50019 Sesto Fiorentino, Florence, Italy
[3] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
来源
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2006年 / 26卷 / 5-7期
关键词
ferrofluids; small angle neutron scattering; SANS; polarized neutrons; nanomagnets; nanoparticles; cobalt ferrites; core shell nanoparticles;
D O I
10.1016/j.msec.2005.09.042
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnetic nanoparticles with a proper surface coating are of outstanding interest for several applications, especially in the biomedical field. In this paper we present the synthesis of CoFe2O4 magnetic nanoparticles covered by a uniform silica shell. These particles were characterized by means of Transmission Electron Microscopy (TEM) and Small Angle Scattering of Polarized Neutrons (SANSPOL). This newly developed technique, taking advantage from the variation of magnetic contrast, allowed us to verify that the thickness of the silica shell can be accurately tailored through a very simple synthetic approach. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:745 / 750
页数:6
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