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Issue 64, 2018, Issue in Progress
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Facile synthesis of highly conductive MoS2/graphene nanohybrids with hetero-structures as excellent microwave absorbers

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Abstract

Two-dimensional (2D) MoS2/graphene nanosheet (MoS2/GN) hybrids have been demonstrated to be promising microwave absorption (MA) materials due to their unique chemical and physical properties as well as rich impedance matching. However, the reported strategies for preparing MoS2/GN hybrids have limited their application potential due to the complex, high-cost and inefficient preparation processes. On the other hand, it is of note that the main source of graphene is based on converting insulating graphene oxides (GO) back to conductive reduced graphene oxides (RGO). Thus, the MA performance of obtained MoS2/RGO nanohybrids is greatly affected by the conversion process of GO. In this work, we prepared the MoS2/GN hybrids by a facile hydrothermal method with directly introducing highly pure and electroconductive GNs. It is found that the highest reflection loss value of the sample-wax containing 40% MoS2/GN is −57.31 dB at a thickness of 2.58 mm, and the bandwidth of RL values less than −10 dB can reach up to 12.28 GHz (from 5.72 to 18 GHz) when an appropriate absorber thickness between 1.5 and 4 mm is chosen. The excellent MA performances emanate from effective conjugation of MoS2 with GN (Mo–C bond between the interfaces), which provides the dielectric loss caused by multi-relaxation, conductance, and polarization. Taking into account the facile synthesis route and their excellent MA performance, the MoS2/GNs hybrid nanosheets and those composite materials with similar isomorphic hetero-structures are very promising for a wide range of MA applications.

Graphical abstract: Facile synthesis of highly conductive MoS2/graphene nanohybrids with hetero-structures as excellent microwave absorbers

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Publication details

The article was received on 29 Sep 2018, accepted on 24 Oct 2018 and first published on 31 Oct 2018


Article type: Paper
DOI: 10.1039/C8RA08086K
Citation: RSC Adv., 2018,8, 36616-36624
  • Open access: Creative Commons BY-NC license
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    Facile synthesis of highly conductive MoS2/graphene nanohybrids with hetero-structures as excellent microwave absorbers

    J. Chai, D. Zhang, J. Cheng, Y. Jia, X. Ba, Y. Gao, L. Zhu, H. Wang and M. Cao, RSC Adv., 2018, 8, 36616
    DOI: 10.1039/C8RA08086K

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