Paper Title:
Preparation, Characterization and Application in Electromagnetic Wave Absorption of Core-Shell C/Fe3O4 Nanocomposites
  Abstract

Large-quantity core-shell carbon spheres/Fe3O4 nanocomposites were synthesized via a simple solution method. The phase structures and morphologies of the composite had been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the carbon spheres were covered by a layer of Fe3O4 nanoparticles with a diameter of about 25 nm. Measurements of the electromagnetic parameters of the samples showed that microwave absorption properties of the carbon sphere-Fe3O4 nanocomposites were much better than that of the pure Fe3O4 or the mixtures of carbon spheres and Fe3O4 microspheres. The optimal reflection loss (RL) reached −37.8 dB at 14.8 GHz for a layer thickness of 2.0 mm, which is favorable for application of our samples in a wide frequency range.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
1725-1730
DOI
10.4028/www.scientific.net/AMR.239-242.1725
Citation
Q. C. Liu, J. M. Dai, Z. F. Zi, D. J. Wu, Y. P. Sun, "Preparation, Characterization and Application in Electromagnetic Wave Absorption of Core-Shell C/Fe3O4 Nanocomposites", Advanced Materials Research, Vols. 239-242, pp. 1725-1730, 2011
Online since
May 2011
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$32.00
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