Preparation and magnetic properties of cobalt nanoparticles with dendrimers as templates

被引：19
|
作者：
Wu, Hui-Xia [1 ]
Zhang, Cui-Xia [1 ]
Jin, Lei [1 ]
Yang, Hong [1 ]
Yang, Shi-Ping [1 ]
机构：
[1] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 121卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Amorphous materials; Chemical synthesis; Magnetometer; Magnetic properties; FERRITE NANOCRYSTALS; IN-VITRO; ENCAPSULATED NANOPARTICLES; POLYAMIDOAMINE DENDRIMERS; CO; FABRICATION; PARTICLES; CATALYSTS; DELIVERY; ROUTE;
D O I：
10.1016/j.matchemphys.2010.01.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of cobalt (Co) nanoparticles were synthesized by employing dendrimers with a trimesyl core as templates and sodium borohydride as a reducing agent. Extensive characterizations of the produced materials were studied using TEM, selected area electron diffraction, energy-dispersive X-ray spectroscopy, FT-IR spectra, TGA, and XPS. And their magnetic properties, including hysteresis loop, field-cooled and zero-field-cooled curves, were investigated by superconducting quantum interference magnetometer. The nanoparticles exhibit supermagnetism at room temperature, accompanied by magnetic hysteresis below the blocking temperature. Co nanoparticles exhibited an excellent T-1 MRI enhancement effect and can be a potential MRI contrast agent. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：342 / 348
页数：7
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