Synthesis and Properties of Magnetic Composites of Carbon Nanotubes/Fe Nanoparticle

Magnetic composites of carbon nanotubes (CNTs) are synthesized by the in situ catalytic decomposition of benzene at temperatures as low as 400 degree C over Fe nanoparticles (mean grain size = 26 nm) produced by sol-gel fabrication and hydrogen reduction. The yield of CNT composite is up to about 30...

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Bibliographic Details
Published in:Chinese physics letters 2009-11, Vol.26 (11), p.116103-116103
Main Authors: Mei-Hua, Xu, Xiao-Si, Qi, Wei, Zhong, Xiao-Juan, Ye, Yu, Deng, Chaktong, Au, Chang-Qing, Jin, Zai-Xing, Yang, You-Wei, Du
Format: Article
Language:English
Subjects:
Carbon
Carbon nanotubes
Ferromagnetism
Iron
Magnetization
Nanoparticles
Nanostructure
Sol gel process
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Summary:Magnetic composites of carbon nanotubes (CNTs) are synthesized by the in situ catalytic decomposition of benzene at temperatures as low as 400 degree C over Fe nanoparticles (mean grain size = 26 nm) produced by sol-gel fabrication and hydrogen reduction. The yield of CNT composite is up to about 3025% in a run of 6 h. FESEM and HRTEM investigations reveal that one-dimensional carbon species are produced in a large quantity. A relatively high value of magnetization is observed for the composite due to the encapsulation of ferromagnetic Fe3C and/or Delta *a-Fe. The method is suitable for the mass-production of CNT composites that contain magnetic nanoparticles.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/26/11/116103