Preparation and Electromagnetic Wave Absorbing Properties of Composites of Cobalt Coated Graphitic Carbon Nitride Co@CNTs

被引：0

作者：

Zhu X. ^{[1
]}

Qiu H. ^{[1
]}

Chen P. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian

[2] Key Laboratory of Materials Modification by Laser, Ion and Electron Beams of Ministry of Education, Dalian University of Technology, Dalian

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2021年 / 35卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Carbon nanotube; Composite; Electromagnetic wave absorption; Graphitic carbon nitride (g-C[!sub]3[!/sub]N[!sub]4[!/sub]);

D O I：

10.11901/1005.3093.2021.473

中图分类号：

学科分类号：

摘要：

The composite of cobalt coated graphitic carbon nitride (g-C3N4) (Co@CNT) for electromagnetic wave (EMW) absorption was prepared via two-step process of co-deposition and calcination with graphitic carbon nitride (g-C3N4) and cobalt nitrate hexahydrate as raw materials. The optimal outstanding capacity of EMW absorption of the prepared Co@CNT can be realized through adjusting the Co content of Co@CNTs. The microstructure and phase composition of Co@CNT were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscopy (SEM) with Energy Disperse Spectroscopy (EDS) and transmission electron microscopy (TEM). The electromagnetic parameters and reflection loss (RL) of the composite were measured by vector network analyzer and then the reflection loss diagram is acquired by MATLAB simulation. The results show that EMW absorption performance of Co@CNT-1 is the best when it is mixed with paraffin (mass ratio 1:3). The maximum effective absorption bandwidth (RL<-10 dB) is 4.42 GHz, while the minimum reflection loss (RLmin) is up to -45.5 dB, which were measured with a hollow ring of 7 mm in outer diameter and 1.5 mm in thickness. © 2021, Editorial Office of Chinese Journal of Materials Research. All right reserved.

引用

页码：811 / 819

页数：8

共 31 条

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