Fe3O4–graphene hybrids: nanoscale characterization and their enhanced electromagnetic wave absorption in gigahertz range

Li, X, Yi, H, Zhang, J, Feng, J, Li, F, Xue, D, Zhang, H, Peng, Y and Mellors, NJ 2013, 'Fe3O4–graphene hybrids: nanoscale characterization and their enhanced electromagnetic wave absorption in gigahertz range' , Journal of Nanoparticle Research, 15 (3) .

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Abstract

Fe3O4–graphene hybrid materials have been fabricated by a simple polyol method, and their morphology, chemistry and crystal structure have been characterized at the nanoscale. It is found that each Fe3O4 nanoparticles decorated on the graphene has a polycrystalline fcc spinel structure and a uniform chemical phase. Raman spectroscopy, Fourier transform infrared spectroscopy, thermogravimetry/differential thermal analysis, X-ray diffraction, and transmission electron microscopy suggest that Fe3O4 nanoparticles are chemically bonded to the graphene sheets. Electromagnetic wave absorption shows that the material has a reflection loss exceeding −10 dB in 7.5–18 GHz for an absorber thickness of 1.48–3 mm, accompanying a maximum reflection loss value of −30.1 dB at a 1.48-mm matching thickness and 17.2-GHz matching frequency. Theoretic analysis shows that the electromagnetic wave absorption behavior obeys quarter-wave principles. The results suggest that the magnetic Fe3O4–graphene hybrids are good candidates for the use as a light-weight electromagnetic wave-absorbing material in X- and Ku-bands.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Journal or Publication Title: Journal of Nanoparticle Research
Publisher: Springer
ISSN: 1388-0764
Related URLs:
Depositing User: NJ Mellors
Date Deposited: 10 Feb 2017 09:26
Last Modified: 10 Feb 2017 09:26
URI: http://usir.salford.ac.uk/id/eprint/41397

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