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Issue 3, 2015
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A facile one-pot method to synthesize a three-dimensional graphene@carbon nanotube composite as a high-efficiency microwave absorber

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Abstract

A novel three-dimensional graphene@carbon nanotube (CNTs) composite has been prepared using a facile one-pot pyrolysis strategy using urea as the carbon source, in which the density and length of CNTs on graphene are rationally tuned by adding an appropriate amount of urea to a precursor mixture. Correspondingly, the density and length of CNTs on graphene have a significant effect on the microwave absorption properties of graphene@CNTs. When most of the graphene surface is clearly covered by the CNTs whose length ranges from 300 to 600 nm, the graphene@CNT composite exhibits excellent microwave absorption properties. The maximum reflection loss value can reach −44.6 dB at 8.6 GHz and the absorption bandwidth with a reflection loss below −10 dB ranges from 7.1 to 10.4 GHz with an addition amount of only 5 wt% graphene@CNTs composite in the paraffin matrix.

Graphical abstract: A facile one-pot method to synthesize a three-dimensional graphene@carbon nanotube composite as a high-efficiency microwave absorber

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Publication details

The article was received on 18 Oct 2014, accepted on 12 Nov 2014 and first published on 17 Nov 2014


Article type: Paper
DOI: 10.1039/C4CP04745A
Phys. Chem. Chem. Phys., 2015,17, 2228-2234

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    A facile one-pot method to synthesize a three-dimensional graphene@carbon nanotube composite as a high-efficiency microwave absorber

    L. Wang, Y. Huang, C. Li, J. Chen and X. Sun, Phys. Chem. Chem. Phys., 2015, 17, 2228
    DOI: 10.1039/C4CP04745A

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