Synthesis of hollow ZnFe2O4/residual carbon from coal gasification fine slag composites for multiband electromagnetic wave absorption

被引：62

作者：

Gao, Shengtao ^{[1
,2
]}

Zhang, Yuanchun ^{[1
,2
]}

Zhang, Xingzhao ^{[2
]}

Jiao, Facun ^{[2
]}

Liu, Tao ^{[2
]}

Li, Hanxu ^{[2
]}

Bai, Yonghui ^{[3
]}

Wu, Chengli ^{[2
]}

机构：

[1] Anhui Univ Sci & Technol, Joint Natl Local Engn Res Ctr Safe & Precise Coal, Huainan 232001, Peoples R China

[2] Anhui Univ Sci & Technol, Sch Chem Engn, Huainan 232001, Peoples R China

[3] Ningxia Univ, State Key Lab High efficiency Utilizat Coal & Gree, Yinchaun 750021, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 952卷

基金：

中国国家自然科学基金;

关键词：

Coal gasification fine slag; Electromagnetic wave absorption; Residual carbon; Microwave absorbing materials; HETEROSTRUCTURE DESIGN; MICROWAVE; NANOPARTICLES; FIBER;

D O I：

10.1016/j.jallcom.2023.170016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electromagnetic wave (EMW) absorbers play an essential role in equipment anti-interference and human health protection. Herein, hollow ZnFe2O4/residual carbon (RC) composites were prepared using a simple hydrothermal method. The absorbing properties of the hollow ZnFe2O4/RC composites can be tuned by adjusting the RC amount. The composites show an apparent double-peak EMW absorption capability in S, C, and Ku bands. The minimum reflection loss (RL) is - 38.99 dB with 4.0 mm thickness, and the effective absorption bandwidth (RL <= -10 dB) is 3.20 GHz with 4.1 mm thickness. The hollow ZnFe2O4/RC composites are anticipated to be promising EMW absorbers due to their strong magnetic loss, good impedance match, optimized electrical properties, and efficient microstructure. This work demonstrates the viability of creating highly effective microwave absorbing materials with multiband EMW absorption capacity, which can be utilized to create future EMW absorbers.(c) 2023 Elsevier B.V. All rights reserved.

引用

页数：13

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