Synthesis of carbon-Fe3O4 coaxial nanofibres by pyrolysis of ferrocene in supercritical carbon dioxide

被引：58

作者：

Cao, Fangyu

Chen, Changle

Wang, Qiang

Chen, Qianwang ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci, Microscale, Anhua 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Mat Sci & Engn, Anhua 230026, Peoples R China

[3] Univ Chicago, Dept Chem, Chicago, IL 60637 USA

来源：

CARBON | 2007年 / 45卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.carbon.2006.11.030

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：

Carbon-Fe3O4 coaxial nanofibres with a diameter around 100 nm were synthesized by pyrolysis of ferrocene in supercritical CO2 at 400 degrees C. The single crystal Fe3O4 cores of the coaxial nanofibres are continuous, and the carbon shell is rich in H. The M-H hysteresis loop for the nanorodes measured at room temperature shows a saturation magnetization of 27.5 emu/g, much lower than 92 emu/g of the corresponding bulk material. This is attributed the considerable mass of the carbon shell and the nanoscale and anisotropy of the magnetite nanorods. A possible mechanism was proposed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：727 / 731

页数：5

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