Microwave Absorption Performance of Encapsulated Magnetic Particles With Nitrogen-Doped Carbon Nanotubes Fe3O4@NCNTs

被引：0

作者：

Xu D. ^{[1
]}

Zhang M. ^{[1
]}

Shen Z. ^{[1
]}

Xia C. ^{[1
]}

Xu J. ^{[1
]}

Guo X. ^{[1
]}

Xiong X. ^{[2
]}

Chen P. ^{[3
]}

机构：

[1] School of Material Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou

[2] Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang Aerospace University, Shenyang

[3] State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2024年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

carbon nanotube; catalytic growth; composite; impedance matching; microwave absorption performance;

D O I：

10.11901/1005.3093.2023.366

中图分类号：

学科分类号：

摘要：

One-dimensional carbon nanotubes (CNTs) have made them candidate as lightweight broadband microwave absorption material due to their intrinsic high electrical conductivity, light weight, and high specific surface area etc. In this paper, heterostructures of magnetic particels of iron oxide encapsulated with nitrogen-doped carbon nanotubes (Fe3O4@NCNTs) have been successfully constructed in-situ by one-step pyrolysis process. The phase composition and structure of the composites were characterized by powder X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. The electromagnetic parameters were measured by coaxial method and the reflection loss was simulated by Matlab. The results show that the calcination temperatures and the raw material ratio have important effect on the microwave absorption properties of nitrogen-doped magnetic functionalized carbon nanotube composites. The results demonstrated that when the calcination temperature was 750oC and the raw material ratio (metal salt/carbon source) is 2: 1, the Fe3O4@NCNTs-750 hybrids with only 10% of functional fillers reached a minimum reflection loss value of -57.7 dB and a maximum effective absorption bandwidth (EAB, below -10 dB) of 6.4 GHz at 2.0 mm. © 2024 Chinese Journal of Materials Research. All rights reserved.

引用

页码：430 / 436

页数：6

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