Fabrication of ZnFe2O4/C@PPy composites with efficient electromagnetic wave absorption properties

Zijian Liao; Mingliang Ma; Zhouyu Tong; Rongzhen Wang; Yuxin Bi; Yan Chen; Kwok L Chung; Yong Ma

doi:10.1016/j.jcis.2021.06.042

Fabrication of ZnFe₂O₄/C@PPy composites with efficient electromagnetic wave absorption properties

J Colloid Interface Sci. 2021 Nov 15:602:602-611. doi: 10.1016/j.jcis.2021.06.042. Epub 2021 Jun 10.

Authors

Zijian Liao¹, Mingliang Ma², Zhouyu Tong¹, Rongzhen Wang¹, Yuxin Bi¹, Yan Chen¹, Kwok L Chung¹, Yong Ma³

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 School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China.

PMID: 34146948
DOI: 10.1016/j.jcis.2021.06.042

Abstract

Nowadays, ferrites/carbon fibers have attracted considerable attention as microwave absorption materials (MA) due to the synergistic effect between dielectric and magnetic loss. Herein, the ZnFe₂O₄/C fibers were fabricated via electrospinning and calcination methods, and then polypyrrole (PPy) successfully coated on the fibers via oxidative polymerization. The ZnFe₂O₄/C@PPy composites exhibit enhanced EM wave absorption performance with the loading of 25 wt%. The optimal reflection loss (RL) value is up to -66.34 dB (13.80 GHz) and effective absorption bandwidth (EAB) is 5.74 GHz (11.78-17.52 GHz) with a matching thickness of 1.93 mm. Besides, high-efficient absorption performance of the ZnFe₂O₄/C@PPy composites is mainly attributed to the dielectric loss and ideal impedance matching. This study reveals a novel approach to development of ferrites/carbon fibers coated with PPy, and the ZnFe₂O₄/C@PPy composites exhibit great potential application as the materials with high-efficient absorption properties.

Keywords: Electrospinning; Microwave Absorption; Polypyrrole; ZnFe(2)O(4)/C Fibers.