A novel strategy to fabricate γ-Fe2O3-MWCNTs hybrids with selectively ferromagnetic or superparamagnetic properties

被引：14

作者：

Fan, Xiaobin ^{[1
]}

Tan, Fengyu ^{[1
]}

Zhang, Guoliang ^{[1
]}

Zhang, Fengbao ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 454卷

关键词：

magnetic; gamma-Fe2O3; carbon nanotubes; nanoparticles; hybrids;

D O I：

10.1016/j.msea.2007.01.027

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnetic gamma-Fe2O3-MWCNTs hybrids possess a wide range of potential applications. This paper reports a novel and efficient method to fabricate the magnetic gamma-Fe2O3-MWCNTs hybrids, via the vacuum thermolysis of Fe(CO)(5) confined in/around MWCNTs and subsequent controlled oxidation. It was found that gamma-Fe2O3 nanoparticles with controllable sizes could be uniformly nucleated on both the inner and outer surfaces of MWCNTs. The mean sizes of the gamma-Fe2O3 nanoparticles here can be varied from 6 to 15 nm by simply modify the experimental process, rendering the hybrids tunable magnetic properties from ferromagnetism to superparamagnetism. It was demonstrated that this method could be used to obtain various metals/oxides-MWCNTs hybrids by simply substituting the metal carbonyl precursors. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：37 / 42

页数：6

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