北京生物医学工程2012，Vol.31Issue(2)：170-173,195,5.DOI:10.3969/j.issn.1002-3208.2012.02.12.
Fe-Fe3O4核壳结构纳米材料的制备与表征
Synthesis and characterization of Fe-Fe3 O4core-shell nanoparticles
摘要
Abstract
Objective Through the procedure of reduction and oxidation, Fe3O4 nanoparticles, as the precursor, were changed into Fe/Fe3O4 core-shell nanoparticles to produce magnetic materials for targeting drug carrier. Methods Fe3 O4 nanoparticles were first reduced by H2 in a tube furnace and then the remaining materials were slowly oxidized in a thin air atmosphere caused by the pressure difference inside and outside the tube furnace. The products were analyzed by X-ray diffraction ( XRD) , transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) Results The as-synthesized particles were almost spherical, the particle diameter ranged from 60nm to 100 nm. The special saturation magnetization was 108emu/ g, 30emu/g higher than the precursor. Conclusions The Fe/Fe3O4 core-shell structure shows higher special saturation magnetization than the precursor as well as greater chemical stability and biocompatibility.关键词
Fe/Fe3O4/核壳结构/比饱和磁化强度/稳定性Key words
Fe/ Fe3O4/ core-shell structure/ special saturation magnetization/ stability分类
医药卫生引用本文复制引用
史慧慧,段磊,杨再新,钟伟,吴小玲..Fe-Fe3O4核壳结构纳米材料的制备与表征[J].北京生物医学工程,2012,31(2):170-173,195,5.基金项目
国家863子课题合作项目(2007AA021805)、江苏省高校自然科学研究计划项目(08KJB310006)资助 （2007AA021805）
