Synthesis and microwave absorption properties of coralloid core-shell structure NiS/Ni3S4@PPy@MoS2 nanowires

Weibo Huang; Zhouyu Tong; Yuxin Bi; Mingliang Ma; Zijian Liao; Guanglei Wu; Yong Ma; Siyu Guo; Xiaoyu Jiang; Xueping Liu

doi:10.1016/j.jcis.2021.04.107

Synthesis and microwave absorption properties of coralloid core-shell structure NiS/Ni₃S₄@PPy@MoS₂ nanowires

J Colloid Interface Sci. 2021 Oct:599:262-270. doi: 10.1016/j.jcis.2021.04.107. Epub 2021 Apr 24.

Authors

Weibo Huang¹, Zhouyu Tong¹, Yuxin Bi¹, Mingliang Ma², Zijian Liao¹, Guanglei Wu³, Yong Ma⁴, Siyu Guo¹, Xiaoyu Jiang¹, Xueping Liu¹

Affiliations

¹ School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
² School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China. Electronic address: mamingliang@qut.edu.cn.
³ Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China.
⁴ School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China.

PMID: 33945973
DOI: 10.1016/j.jcis.2021.04.107

Abstract

Herein, coralloid core-shell structure NiS/Ni₃S₄@PPy@MoS₂ nanowires were elaborately designed and successfully synthesized through a three-step route to obtain exceptional microwave absorption (MA) properties. Ni nanowires were first fabricated, and then used as the substrate to be coated with a layer of PPy. Ni chalcogenides were obtained by using Ni nanowire as sacrificial templates while growing MoS₂ nanorods by hydrothermal method. Both the one-dimensional (1D) core-shell structure and the coralloid surface generated by MoS₂ nanorods were beneficial for the attenuation of microwaves. After investigating the electromagnetic properties of different loading content absorbers (30 wt.%, 40 wt.% and 50 wt.%), it is found that the 50 wt.% loading absorber has the optimal MA performance. The minimum reflection loss (RL_min) value can reach -51.29 dB at 10.1 GHz with a thickness of 2.29 mm, and the corresponding effective absorption bandwidth (EAB, RL < -10 dB) can be up to 3.24 GHz. This research provides a reference for exploiting novel high-efficient 1D absorbers in the field of MA.

Keywords: Chalcogenides; Coralloid core-shell structure; Microwave absorption; NiS/Ni(3)S(4)@PPy@MoS(2) nanowires.