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Title: Lightweight and high-performance microwave absorber based on 2D WS 2 –RGO heterostructures
Authors: Zhang, D
Liu, T
Cheng, J
Cao, Q
Zheng, G 
Liang, S
Wang, H
Cao, MS
Issue Date: 2019
Source: Nano-micro letters, 2019, v. 11, no. 1, 38
Abstract: Two-dimensional (2D) nanomaterials are categorized as a new class of microwave absorption (MA) materials owing to their high specific surface area and peculiar electronic properties. In this study, 2D WS 2 –reduced graphene oxide (WS 2 –rGO) heterostructure nanosheets were synthesized via a facile hydrothermal process; moreover, their dielectric and MA properties were reported for the first time. Remarkably, the maximum reflection loss (RL) of the sample–wax composites containing 40 wt% WS 2 –rGO was − 41.5 dB at a thickness of 2.7 mm; furthermore, the bandwidth where RL < − 10 dB can reach up to 13.62 GHz (4.38–18 GHz). Synergistic mechanisms derived from the interfacial dielectric coupling and multiple-interface scattering after hybridization of WS 2 with rGO were discussed to explain the drastically enhanced microwave absorption performance. The results indicate these lightweight WS 2 –rGO nanosheets to be potential materials for practical electromagnetic wave-absorbing applications.[Figure not available: see fulltext.]
Keywords: 2D WS 2 nanosheets
Heterostructure
Microwave absorption
Reduced graphene oxide
Publisher: Springer
Journal: Nano-micro letters 
ISSN: 2311-6706
EISSN: 2150-5551
DOI: 10.1007/s40820-019-0270-4
Rights: © The Author(s) 2019
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
The following publication Zhang, D., Liu, T., Cheng, J. et al. Nano-Micro Lett. (2019) 11: 38 is available at https://doi.org/10.1007/s40820-019-0270-4
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