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Coating Carbon Nanotubes with Ferrites Using an Improved Co-precipitation Method

Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, People’s Republic of China

^* To whom correspondence should be addressed. E-mail: wangjb{at}lzu.edu.cn.

	Abstract

Multiwalled carbon nanotubes (MWCNTs) have been first coated with cobalt ferrites by a simple wet method. Transmission electron microscopy images show that ferrite nanoparticles (average diameter of 10 nm) were deposited on the sidewall of the MWCNTs. X-ray diffraction pattern exhibits representative diffraction peaks corresponding to spinel structure, and the structure of the MWCNTs is not distorted. X-ray photoelectron spectroscopy spectrum shows the proportion of the content of Fe and Co is about 2:1, which coincides with the stoichiometric proportion of CoFe₂O₄.

First published on September 22, 2009
Journal of Composite Materials 2009, doi:10.1177/0021998309347576


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