Issue 18, 2020

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

Abstract

In this study, a novel hierarchical carbon fiber@cobalt ferrite@manganese dioxide (CF@CoFe2O4@MnO2) composite was facilely prepared via a sol–gel method and hydrothermal reaction. The morphology, structure, chemical and element composition, crystal form, elemental binding energy, magnetic behavior and microwave absorbing performance of the composite were carefully investigated. According to its hysteresis loops, the composite exhibits a typical soft magnetic behavior, with a Ms value of 30.2 emu g−1. Besides, the as-synthesized CF@CoFe2O4@MnO2 composite exhibits superior microwave absorption performance mainly due to reasonable electromagnetic matching, and its minimum reflection loss value can reach −34 dB with a sample thickness of just 1.5 mm. The composite can be regarded as an ideal microwave absorber.

Graphical abstract: Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

Article information

Article type
Paper
Submitted
09 12月 2019
Accepted
27 2月 2020
First published
11 3月 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 10510-10518

Synthesis of a hierarchical carbon fiber@cobalt ferrite@manganese dioxide composite and its application as a microwave absorber

A. Feng, T. Hou, Z. Jia and G. Wu, RSC Adv., 2020, 10, 10510 DOI: 10.1039/C9RA10327A

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