Preparation and microwave absorbing properties of MoS2/biomass carbon composite

被引：0
|
作者：
Xie W. [1 ]
Geng H. [1 ]
Liu Y. [1 ]
Zhao T. [1 ]
Zhang X. [1 ]
Dong L. [1 ]
机构：
[1] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 05期
关键词：
Biomass; Composites; Impedance match; Microwave absorption properties; MoS[!sub]2[!/sub; Shaddock peel;
D O I：
10.13801/j.cnki.fhclxb.20210715.001
中图分类号：
学科分类号：
摘要：
In order to solve the problem of low conductivity of MoS2 absorbing material, the MoS2/biomass carbon (BC) composite material was prepared by using shaddock peel (SP) as the raw material, using one-pot hydro-thermal and high-temperature calcination methods. The content of MoS2 in the composite material was adjusted by adjusting the content of the initial Mo source and S source. The results of microscopic morphology, structure and electromagnetic parameters show that with the increase of the MoS2 content in the composite material, the scattered distribution of MoS2 on the BC surface changes from flakes to flower-like coatings, and the conductivity and complex permittivity of MoS2/BC composites gradually decrease. By adjusting the ratio of MoS2 to BC, the effective control of the electromagnetic parameters of the MoS2/BC composite material is realized, and its impedance matching characteristics are optimized. The flower-like structure of MoS2 facilitates the multiple reflection/scattering of electromagnetic waves. At the same time, there are abundant interfaces between flower-like MoS2 and BC, which is beneficial to promote interface polarization and enhance the attenuation ability of MoS2/BC composites to electromagnetic waves. The prepared MoS2/BC-0.8 has a minimum reflectance loss (RL) value of -40.1 dB, and an effective absorption bandwidth of up to 5.9 GHz (11.1-17.0 GHz). Copyright ©2022 Acta Materiae Compositae Sinica. All rights reserved.
引用
收藏
页码：2238 / 2248
页数：10
相关论文
共 39 条
  • [1] YANG Yanan, XIA Long, ZHANG Xiyu, Et al., Preparation and microwave absorbing properties of Fe<sub>3</sub>O<sub>4</sub>@lithium aluminum silicate glass ceramic/reduced graphene oxide composite, Acta Materiae Compositae Sinica, 36, 11, pp. 2651-2664, (2019)
  • [2] MA Zhijun, MANG Changyue, WENG Xingyuan, Et al., Electromagnetic response behavior of Zn reduced graphene oxide (RGO) and ZnO/RGO self-assembled composites, Acta Materiae Compositae Sinica, 36, 7, pp. 1776-1786, (2019)
  • [3] LV H, YANG Z, WANG P L, Et al., A voltage-boosting strategy enabling a low-frequency, flexible electro-magnetic wave absorption device, Advanced Materials, 30, 15, (2018)
  • [4] CAO M S, WANG X X, ZHANG M, Et al., Variable-tempera-ture electron transport and dipole polarization turning flexible multifunctional microsensor beyond electrical and optical energy, Advanced Materials, 32, 10, (2020)
  • [5] WANG P, WANG G W, ZHANG J M, Et al., Excellent microwave absorbing performance of the sandwich structure absorber Fe@B<sub>2</sub>O<sub>3</sub>/MoS<sub>2</sub>/Fe@B<sub>2</sub>O<sub>3</sub> in the Ku-band and X-band, Chemical Engineering Journal, 382, (2020)
  • [6] FENG Z, YANG P P, WEN G S, Et al., One-step synthesis of MoS<sub>2</sub> nanoparticles with different morphologies for electromagnetic wave absorption, Applied Surface Science, 502, (2020)
  • [7] NING M Q, JIANG P H, DING W, Et al., Phase manipulating toward molybdenum disulfide for optimizing electro-magnetic wave absorbing in gigahertz, Advanced Functional Materials, 31, 19, (2021)
  • [8] KUMAR P., Ultrathin 2D nanomaterials for electro-magnetic interference shielding, Advanced Materials Interfaces, 6, 24, (2019)
  • [9] CAO M S, SHU J C, WANG X X, Et al., Electronic structure and electromagnetic properties for 2D electromagnetic functional materials in gigahertz frequency, Annalen Der Physik, 531, 4, (2019)
  • [10] NING M Q, MAN Q K, TAN G G, Et al., Ultrathin MoS<sub>2</sub> nanosheets encapsulated in hollow carbon spheres: A case of a dielectric absorber with optimized impedance for efficient microwave absorption, ACS Applied Materials & Interfaces, 12, 18, pp. 20785-20796, (2020)
1234