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Issue 28, 2018, Issue in Progress
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Solvent-assisted thermal reduction of microcrystalline graphene oxide with excellent microwave absorption performance

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Abstract

To prepare a new kind of electromagnetic wave absorber, and improve the processing technology and accessional value of natural microcrystalline graphite minerals (NMGMs), reduced microcrystalline graphene oxide (rGO-M), a novel absorber with high absorption, low reflection and a wide absorption band, was prepared from NMGMs using a solvent-assisted thermal reduction method. Moreover, the as-produced rGO-M with adjustable electrical resistivity can be easily transferred into well distributed bulk materials by freeze-drying technology. These unique structures and compositions make a great contribution to the impedance match, and cause strong conductive loss and various dipole polarization effects which greatly enhance the absorption. Meanwhile, the effective bandwidths below −5 dB and −10 dB are 11.7 GHz and 3.32 GHz respectively, and the reflection loss can reach −42.68 dB. The study will be beneficial to the development of carbon resources and carbon materials research. Besides, it can provide a scientific basis for the further improvement of the comprehensive utilization and the level of deep processing technology of NMGM resources.

Graphical abstract: Solvent-assisted thermal reduction of microcrystalline graphene oxide with excellent microwave absorption performance

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Article information


Submitted
28 Feb 2018
Accepted
16 Apr 2018
First published
24 Apr 2018

This article is Open Access

RSC Adv., 2018,8, 15315-15325
Article type
Paper

Solvent-assisted thermal reduction of microcrystalline graphene oxide with excellent microwave absorption performance

C. Liao, X. Zhu, W. Xie, F. Zeng, S. Yi, H. Cheng, J. Kuang, Y. Deng and T. Cao, RSC Adv., 2018, 8, 15315
DOI: 10.1039/C8RA01764F

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