NiS₂@MoS₂ Nanospheres Anchored on Reduced Graphene Oxide: A Novel Ternary Heterostructure with Enhanced Electromagnetic Absorption Property

Nanomaterials
Zhi ZhangXiaodong Sun

Abstract

For the purposes of strength, military equipment camouflage, and protecting the health of organisms, electromagnetic wave absorbing materials have received a lot of attention and are widely studied. In addition to having a strong absorption intensity and a wide effective absorption bandwidth, materials that are lightweight, thermally stable, and antioxidative are also highly desirable. In this study, we fabricated core⁻shell structured NiS₂@MoS₂ nanospheres anchored on reduced graphene oxide (rGO) nanosheets (NiS₂@MoS₂/rGO) by a simple two-step hydrothermal method. The combination ratio was adjusted to achieve proper impedance matching. The electromagnetic parameters and the absorption performance were investigated in detail. A composite loaded with 30 wt.% of the sample achieved a minimum reflection loss (RL) value of -29.75 dB and the effective bandwidth (RL value of less than -10 dB) ranged from 4.95 GHz to 18.00 GHz (13.05 GHz), with a thickness ranging from 1.5 mm to 4.0 mm. This study proved that the generated significant interfacial polarization and synergetic interaction between components can result in NiS₂@MoS₂/rGO composites with enhanced electromagnetic absorption performance.

References

Dec 22, 2009·Chemical Society Reviews·Daniel R DreyerRodney S Ruoff
Mar 23, 2013·Chemistry : a European Journal·Jiwei LiuZhengwang Liu
Apr 9, 2013·Chemical Society Reviews·Weidong ShiHongjie Zhang
Jul 3, 2013·Physical Chemistry Chemical Physics : PCCP·Chuangang HuLiangti Qu
Oct 10, 2013·Advanced Materials·Ting XiaXiaobo Chen
Dec 7, 2013·Scientific Reports·Xingchen ZhaoYouwei Du
Oct 7, 2016·Chemical Communications : Chem Comm·Yaxiao GuoErkang Wang

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Methods Mentioned

BETA
X-ray
scanning electron microscopy
transmission
electron diffraction

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