Issue 36, 2017

Facile synthesis of NiS2@MoS2 core–shell nanospheres for effective enhancement in microwave absorption

Abstract

Core–shell structured NiS2@MoS2 nanospheres have been successfully fabricated via a facile hydrothermal method. The structure and morphology of the nanospheres were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results indicated that this unique core–shell structure was beneficial to high-performance microwave absorption. A possible absorption mechanism was explained in detail. As an absorber, nanocomposites with a filler loading of 20 wt% exhibited enhanced microwave absorption properties due to characteristic impedance matching, synergistic effects, dipole and interface polarization, multiple reflections and quarter-wavelength matching. The minimum reflection loss can reach −41.05 dB at 12.08 GHz, and the absorption bandwidth exceeding −10 dB is 4.4 GHz with a thickness of 2.2 mm.

Graphical abstract: Facile synthesis of NiS2@MoS2 core–shell nanospheres for effective enhancement in microwave absorption

Supplementary files

Article information

Article type
Paper
Submitted
20 Mar 2017
Accepted
13 Apr 2017
First published
24 Apr 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 22454-22460

Facile synthesis of NiS2@MoS2 core–shell nanospheres for effective enhancement in microwave absorption

X. Zhang, S. Wang, G. Wang, Z. Li, A. Guo, J. Zhu, D. Liu and P. Yin, RSC Adv., 2017, 7, 22454 DOI: 10.1039/C7RA03260A

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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