Core-shell structured iron nanoparticles well dispersed on montmorillonite

被引：49

作者：

Fan, Mingde ^{[1
,2
]}

Yuan, Peng ^{[1
]}

Zhu, Jianxi ^{[1
]}

Chen, Tianhu ^{[3
]}

Yuan, Aihua ^{[4
]}

He, Hongping ^{[1
]}

Chen, Kangmin ^{[5
]}

Liu, Dong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China

[4] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

[5] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 20期

基金：

中国国家自然科学基金;

关键词：

Core-shell structured; Iron nanoparticle; Borohydride; Montmorillonite; Ferromagnetic; MAGNETIC-PROPERTIES; METAL PARTICLES; CLAY; SIZE;

D O I：

10.1016/j.jmmm.2009.06.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Iron nanoparticles have been successfully synthesized using sodium borohydride solution reduction of ferric trichloride hexahydrate in the presence of montmorillonite as an effective protective reagent and support as well. A combination of characterizations reveals the well disperse of these obtained iron nanoparticles supported on the external surface of clay with roughly spherical morphology and mean diameter of 55 nm. The particles are oxidation resistant well with iron core-iron oxide shell structure. The shell thickness of 3 nm remains almost invariable under ambient conditions. Discernable hysteresis loop reveals ferromagnetic behavior of the iron nanoparticles, which make them easy for magnetic separation and potential in some practical applications. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3515 / 3519

页数：5

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