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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Chem. | doi: 10.3389/fchem.2019.00711

Tunable High-performance Microwave Absorption and Shielding by Three Constituent Phases Between rGO and Fe3O4@SiO2 Nanochains

Chao-Qin Li1,  Wei Xu2, Ruo-Cheng Ding2, Xun Shen1, Zhi Chen1, Mao-Dong Li3* and  Guang-Sheng Wang2*
  • 1Qingdao University of Science and Technology, China
  • 2Beihang University, China
  • 3Guangzhou Special Pressure Equipment Testing and Research Institute, China

In order to tune the microwave absorption together with the electromagnetic shielding performance, reduced graphene oxide (rGO) and Fe3O4@SiO2 nanochains are successfully combined with various mass ratio. By properly adjusting the permittivity and permeability derived from different contents of the rGO and Fe3O4@SiO2 nanochains, the rGO/Fe3O4@SiO2 composite with excellent microwave absorption properties is obtained. And due to adding the highly conductive rGO, the desired shielding effectiveness is also achieved. The reflection loss value of -48.34 dB is achieved for the composite with mass ratio of 1:1, and the bandwidth less than -10 dB can reach up to 4.88 GHz with a thickness of 2.0 mm. Moreover, the composite with mass ratio of 4:1 exhibits superior electromagnetic shielding performance as high as 37 dB, which also broaden its application fields. Considering the outstanding microwave absorption and electromagnetic shielding performance, the composite can be employed as a potential multi-functional material.

Keywords: Fe3O4@SiO2 nanochains, rGO/Fe3O4@SiO2 composite, Multi-functional composite, Microwave absorption, electromagnetic shielding

Received: 20 May 2019; Accepted: 09 Oct 2019.

Copyright: © 2019 Li, Xu, Ding, Shen, Chen, Li and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Mr. Mao-Dong Li, Guangzhou Special Pressure Equipment Testing and Research Institute, Guangzhou, China, 2453962572@qq.com
Mx. Guang-Sheng Wang, Beihang University, Beijing, 100083, Beijing Municipality, China, wanggsh@buaa.edu.cn