Facile approach for synthesis of high moment Fe/ferrite and FeCo/ferrite core/shell nanostructures

被引：22

作者：

Abbas, Mohamed ^{[1
,2
]}

Islam, Md. Nazrul ^{[3
]}

Rao, B. Parvatheeswara ^{[4
]}

Abou Aitah, K. E. ^{[5
]}

Kim, CheolGi ^{[1
]}

机构：

[1] Daegu Gyeongbuk Inst Sci & Technol, Dept Emerging Mat Sci, Taegu, South Korea

[2] Natl Res Ctr, Dept Ceram, Cairo 12311, Egypt

[3] Chungnam Natl Univ, Dept Mat Sci & Engn, Ctr NanoBioEngn & Spintron, Taejon 305764, South Korea

[4] Andhra Univ, Dept Phys, Visakhapatnam 530003, Andhra Pradesh, India

[5] Natl Res Ctr, Med & Aromat Plants Res Dept, Cairo 12311, Egypt

来源：

MATERIALS LETTERS | 2015年 / 139卷

关键词：

Fe/ferrite; FeCo/ferrite; Core/shell; Magnetic properties; Thermal annealing; Sonochemical method; NANOPARTICLES; NANOCOMPOSITE; NANOCUBES;

D O I：

10.1016/j.matlet.2014.10.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, we developed a facile approach for synthesis of high magnetic moment monodisperse Fe/ferrite and FeCo/ferrite core/shell nanoparticles. Fe3O4 and CoFe2O4 nanoparticles were at first synthesized through sonochemical process, followed by thermal annealing in presence of hydrogen (H-2) gas for 2 h for reduction into Fe and FeCo nanoparticles, respectively. Then, oxidation of Fe and FeCo nanoparticles up to 48 h in air atmosphere resulted in complete formation of Fe/ferrite and FeCo/ferrite core/shell nanostructures. Different analytical techniques such as X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy and vibrating sample magnetometer were used to characterize and confirm the successful formation of the core/shell nanostructures. In view of the obtained high magnetic Fe or FeCo core and biocompatible ferrite shell, these core-shell Fe/ferrite and FeCo/ferrite nanoparticles are expected to be promising materials for various bio-sensing applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：161 / 164

页数：4

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