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Microwave-Assisted One-Step Synthesis of FeCo/Graphene Nanocomposite for Microwave Absorption

  • Jianhui Peng
  • Zhiwei PengEmail author
  • Liancheng Wang
  • Leixia Zheng
  • Zhongping Zhu
  • Guanghui Li
  • Tao Jiang
Conference paper
First Online:
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

A high-performance microwave absorber composed of FeCo and graphene was prepared by a simple and rapid microwave-assisted one-step method. In the process, the metal precursors (iron hydroxide and cobalt hydroxide) and graphene oxide derived from graphite were transformed into FeCo and graphene, respectively, in only 12 min. Moreover, the FeCo nanoparticles were firmly dispersed on the surfaces of graphene nanosheets. The composition and structure of the FeCo/graphene nanocomposite were characterized by X-ray diffraction (XRD), Raman spectroscopy (RS), and transmission electron microscopy (TEM). It was found that with the filling ratio of only 10 wt% and the thickness of 2.2 mm, the nanocomposite showed the wide effective absorption bandwidth (less than −10 dB) of 4.7 GHz with the minimum reflection loss of −12.56 dB. The results of microwave absorption show that the nanocomposite is a potential candidate for high-performance microwave absorption.

Keywords

Graphene FeCo Microwave-assisted synthesis Electromagnetic parameters Microwave absorption 
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Notes

Acknowledgements

This work was partially supported by the National Natural Science Foundation of China under Grants 51774337, 51504297 and 51811530108; the Natural Science Foundation of Hunan Province, China, under Grant 2017JJ3383; the Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Open Fund under Grant SWMES2017-04; the Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials under Grant 17kffk11; the Fundamental Research Funds for the Central Universities of Central South University under Grant 2018zzts799; the Co-Innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources under Grant 2014-405; the Guangdong Guangqing Metal Technology Co. Ltd. under Grant 738010210; the Innovation-Driven Program of Central South University under Grant 2016CXS021; and the Shenghua Lieying Program of Central South University under Grant 502035001.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Jianhui Peng
    • 1
  • Zhiwei Peng
    • 1
    Email author
  • Liancheng Wang
    • 1
  • Leixia Zheng
    • 1
  • Zhongping Zhu
    • 1
  • Guanghui Li
    • 1
  • Tao Jiang
    • 1
  1. 1.School of Minerals Processing and BioengineeringCentral South UniversityChangshaChina

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