Preparation of aqueous dispersion of colloidal α-Fe nanoparticle by phase transfer

被引：7

作者：

Cha, Hyun Gil ^{[1
]}

Kim, Young Hwan ^{[1
]}

Kim, Chang Woo ^{[1
]}

Kang, Young Soo ^{[1
]}

机构：

[1] Pukyong Natl Univ, Dept Chem, Pusan 608737, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 126卷 / 01期

关键词：

aqueous dispersion; Fe3O4; nanocrystallites; colloidal alpha-Fe nanoparticles;

D O I：

10.1016/j.snb.2006.11.052

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The synthesis of alpha-Fe nanoparticles via Fe3O4 nanoparticles using Fe-oleate(2) complex was studied. Fe-oleate(2) was prepared from the reaction of iron chloride and sodium oleate in water. The thermal decomposition of the Fe-oleate2 complex was carried out under the pressure of 40 Pa at 400 degrees C without any solvent and resulted in Fe3O4 nanoparticles. The produced Fe3O4 nanoparticles were collected as colloidal solution with CHCl3. The Fe3O4 nanoparticles were mixed with salt powders and annealed at 700 degrees C under Ar + 5% H-2 gas. The salts were washed out from the produced a-Fe nanoparticles with water. The produced a-Fe nanoparticles are well dispersed in aqueous phase. The magnetic properties and crystallinity of the produced nanoparticles were chracterized by SQUID and XRD. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：221 / 225

页数：5

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