Nano-Fe3O4 decorated on carbon aerogel framework: Coupling microstructures synergistic effect for electromagnetic wave absorption

被引：6

作者：

Ye, Zhengwei ^{[1
]}

Zhao, Qizhi ^{[1
]}

Wang, Kejun ^{[1
]}

Yang, Jianjain ^{[1
]}

Li, Xiaoqiong ^{[1
]}

机构：

[1] Res Inst Chem Def, Wuhan 430079, Peoples R China

来源：

ADVANCED POWDER TECHNOLOGY | 2024年 / 35卷 / 01期

关键词：

Microstructures; Porous; Electromagnetic wave absorption; MICROWAVE-ABSORPTION; FE3O4; NANOPARTICLES; BROAD-BAND; AT-C; PERFORMANCE; MICROSPHERES; NANOTUBES; NANOFIBERS; PARTICLES; TEXTURE;

D O I：

10.1016/j.apt.2023.104301

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Generation of multi-components synergistic absorbers is of value for efficient electromagnetic wave (EMW) absorption. This study constructed two kinds of nano-Fe3O4 decorated carbon aerogels with dis-parate microstructures (either Fe3O4 nucleated on the surface of carbon skeleton or the pore inside the aerogel) and highlighted the significance of the coupling microstructure on the EMW absorption capacity of the magnetic-dielectric material. The results demonstrate that the readily Fe3O4 coated and distributed carbon aerogel favors to improve EMW absorbing performance. A minimum reflection loss (RLmin) value of -51.8 dB is achieved at 4.9 GHz. In addition, the effective absorption bandwidth (EAB) covered the Ku bands under the matching thickness of only 1.8 mm. The favorable impedance matching and abundant hetero-interfaces collectively contribute to the EMW attenuation. The work with respect to interfacial structural control is of great reference value for designing excellent EMW absorber candidates. (c) 2023 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights reserved.

引用

页数：10

共 54 条

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