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Research Article

Boosted electromagnetic wave absorption performance from synergistic induced polarization of SiCNWs@MnO2@PPy heterostructures

Meng Zhang1,§, Laibin Zhao1,§, Wenxin Zhao1, Ting Wang2, Liying Yuan1, Yuying Guo1, Yuxin Xie1, Tingting Cheng1, Alan Meng2, Zhenjiang Li1()
College of Electromechanical Engineering, Key Laboratory of Polymer Material Advanced Manufacturing’s Technology of Shandong province, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Gaomi Campus, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

§ Meng Zhang and Laibin Zhao contributed equally to this work.

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A novel heterojunction composed of SiC nanowires core, MnO2 nanosheets inter-layer and polypyrrole (PPy) coating was successfully constructed, who exhibits excellent electromagnetic wave absorption performance.

Abstract

In the last decade, electromagnetic pollution has caused people’s considerable attention. Developing absorbing material with low cost, lightweight, simple preparation, and high electromagnetic attenuation efficiency has become a feasible means to deal with this problem. In this work, core–shell SiCNWs@MnO2@PPy (NWs: nanowires, PPy: polypyrrole) heterostructures composed of SiC nanowires core, MnO2 nanosheets inter-layer, and PPy coating were successfully prepared through chemical vapor deposition and two-step electrodeposition process. Taking advantage of the interfacial polarization and dipole polarization, the obtained product displays excellent electromagnetic wave absorption performances with the minimum reflection loss (RLmin) of −50.59 dB when the matching thickness is 2.41 mm, and the optimal effective absorption bandwidth (EAB) value reaches to 6.64 GHz at a matching thickness of 2.46 mm, revealing that the SiCNWs@MnO2@PPy nanocomposite could be served as a promising electromagnetic wave absorbing material. On the basis of systematic analysis concerning the electromagnetic parameters, the dissipation process of the incident electromagnetic wave was demonstrated reasonably, which may provide a referable preparation strategy for novel heterostructures, especially nonmagnetic lightweight absorbing material.

Keywords

SiC nanowiresheterostructurepolarization losselectromagnetic wave absorptionattenuation mechanism

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Nano Research
Volume 16 Issue 2,
February 2023
Pages 3558-3569
DOI: 10.1007/s12274-022-5289-z
Cite this article:
Zhang M, Zhao L, Zhao W, et al. Boosted electromagnetic wave absorption performance from synergistic induced polarization of SiCNWs@MnO2@PPy heterostructures. Nano Research, 2023, 16(2): 3558-3569. https://doi.org/10.1007/s12274-022-5289-z
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