Efficient synthesis of N-doped porous carbon nanoribbon composites with selective microwave absorption performance in common wavebands

被引：76

作者：

Wang, Jiqi ^{[1
]}

Wu, Fei ^{[1
]}

Cui, Yuhong ^{[1
]}

Zhang, Aibo ^{[1
]}

Zhang, Qiuyu ^{[1
,2
]}

Zhang, Baoliang ^{[1
,3
]}

机构：

[1] Northwestern Polytech Univ, Sch Chem & Chem Engn, Xian 710129, Peoples R China

[2] Northwestern Polytech Univ, MOE Key Lab Mat Phys & Chem Extraordinary Condit, Minist Educ, Xian 710072, Peoples R China

[3] Northwestern Polytech Univ, Xian Key Lab Funct Organ Porous Mat, Xian 710072, Peoples R China

来源：

CARBON | 2021年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Carbon nanoribbon composites; Microwave absorption; Frequency selectivity; Solvothermal method; Calcination;

D O I：

10.1016/j.carbon.2021.01.005

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：

One-dimensional carbon-based nanomaterials possess unique advantages in the field of microwave absorption due to their special structure. Structure design and synthesis method development of new one-dimensional carbon-based microwave absorbers are of great significance. In this paper, a rapid preparation method for N-doped porous carbon nanoribbon composites is reported, and a series of high-efficiency lightweight microwave absorbers have been obtained. They can meet the requirements of different microwave absorption scenarios. Firstly, an organic-inorganic hybrid nanomaterial with ribbon-shaped structure (HNR) is synthesized by solvothermal system. Then, N-doped porous carbon nanoribbon composites with different components are obtained by using HNR as precursor and being calcined at different temperature. The microwave absorbing properties show frequency selectivity. ZnS/ZnO@N-doped porous carbon nanoribbons (ZnS/ZnO@NPCNRs) exhibit best absorption performance in Ku band and achieve full band absorption with a minimum reflection loss of -56.1 dB. ZnS@N-doped porous carbon nanoribbons (ZnS@NPCNRs) have the strongest absorption in X band. The minimum reflection loss is -55.3 dB. N-doped porous carbon nanoribbons (NPCNRs) show obvious advantages in C band and S band under an ultra-low filler content of 4%. This work proposes a rapid synthesis method for ribbon-shaped carbon-based nanomaterials and provides new candidates for different microwave absorption scenarios. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页码：164 / 175

页数：12

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