Synthesis and characterization hydrophobic FePt@Au core-shell nanoparticles in a quaternary CTAB/n-butanolin-heptane/water reverse micelle

被引：5
|
作者：
Fu, Yun Zhi [1 ]
Xiang, Xiu Dong [2 ]
机构：
[1] S China Univ Trop Agr, Inst Technol, Danzhou 571737, Peoples R China
[2] China Univ Petr, Dept Computat Sci, Dongying, Peoples R China
来源：
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2008年 / 29卷 / 06期
基金：
中国国家自然科学基金;
关键词：
FePt@Au core-shell NPs; magnetic properties; reversed-micelle;
D O I：
10.1080/01932690701783036
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this article, hydrophobic FePt@Au nanoparticles (NPs) were synthesized in Quaternary water in oil (W/O) reverse micelle consisting of cetyltrimethylammonium bromide (CTAB), n-butanol, n-heptane and water by aqueous sodium borohydride (NaBH4) and hydrazine hydrate (N2H4 center dot H2O) as reductant on surface of the seed FePt NPs. The NPs are characterized by UV-vis spectroscopy, transmission electron microscopy (TEM) and energy dispersive x-ray analysis (EDX) measurement. The results indicated that both seed FePt and FePt@Au core-shell NPs have different composition and character, especially aging FePt@Au core-shell NPs at high temperature displayed the coercivity by superconducting quantum interference device (SQUID) at room temperature. The forming mechanism of NPs also was reported.
引用
收藏
页码：861 / 865
页数：5
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