Issue 33, 2021

Synthesis of a hollow-structured flower-like Fe3O4@MoS2 composite and its microwave-absorption properties

Abstract

In order to realize the characteristics of new types of wave-absorbing materials, such as strong absorption, broad bandwidth, low weight and small thickness, a hollow-structured flower-like Fe3O4@MoS2 composite was successfully prepared by simple solvothermal and hydrothermal methods in this paper. The structural properties were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Besides, the microwave properties and magnetic properties were measured using a vector network analyzer and via a hysteresis loop. SEM and TEM images revealed that MoS2 nanosheets grew on the surface of hollow nanospheres. The results showed that the composite exhibited excellent absorbing property. When the molar ratio of Fe3O4 and MoS2 was 1 : 18, the minimum reflection loss value reached −49.6 dB at 13.2 GHz with a thickness of 2.0 mm and the effective absorption bandwidth was 4.24 GHz (11.68–15.92 GHz). Meanwhile, the effective absorption in the entire X-band (8–12 GHz) and part of the C-band (4–8 GHz) and Ku-band (12–18 GHz) could be achieved by designing the sample thickness. In addition, the hollow structure effectively reduced the density of the material, which was in line with the current development trend of absorption materials. It could be predicted that the hollow core–shell structure composite has a potential application prospect in the field of microwave absorption.

Graphical abstract: Synthesis of a hollow-structured flower-like Fe3O4@MoS2 composite and its microwave-absorption properties

Article information

Article type
Paper
Submitted
17 Mar 2021
Accepted
16 May 2021
First published
07 Jun 2021
This article is Open Access
Creative Commons BY license

RSC Adv., 2021,11, 20180-20190

Synthesis of a hollow-structured flower-like Fe3O4@MoS2 composite and its microwave-absorption properties

G. Xiang, M. Chen, Z. Ni, Y. Shen and L. Xu, RSC Adv., 2021, 11, 20180 DOI: 10.1039/D1RA02095A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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