Multi-shell hollow porous carbon nanoparticles with excellent microwave absorption properties

被引：485

作者：

Tao, Jiaqi ^{[1
,2
]}

Zhou, Jintang ^{[1
,2
]}

Yao, Zhengjun ^{[1
,2
]}

Jiao, Zibao ^{[1
,2
]}

Wei, Bo ^{[1
,2
]}

Tan, Ruiyang ^{[1
,2
]}

Li, Zhong ^{[1
,2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Mat Preparat & Protect Harsh Environm, Nanjing 211100, Jiangsu, Peoples R China

来源：

CARBON | 2021年 / 172卷

基金：

中国国家自然科学基金;

关键词：

Hollow; Porous; Multi-shell; Layer-by-Layer; Microwave absorption; ELECTROMAGNETIC-WAVE ABSORPTION; FACILE SYNTHESIS; SHELL THICKNESS; COMPOSITES; GRAPHENE; MICROSPHERES; SPHERES; PARTICLES; ABSORBER; NANOCOMPOSITES;

D O I：

10.1016/j.carbon.2020.10.062

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：

The micro-morphology design of nanomaterials has always been a hot issue in the field of microwave absorption. In this work, multi-shell structure is made on the basis of hollow structure and porous structure, and the effect of shell number of nanoparticles on microwave absorption properties is studied. Multi-shell hollow porous carbon nanoparticles (HPCNs-m) were prepared by simple liquid phase method combined with layer-by-layer process, and their micro-morphology, chemical structure, electromagnetic properties and microwave absorption properties were studied by a variety of characterization methods. The results show that the multi-shell structure is beneficial to improve the conductivity loss and polarization loss, so as to enhance the microwave absorption properties of the samples. In all samples, the effective absorption bandwidth (EAB) of three-shell hollow porous carbon nanoparticles (HPCNs-3) is 5.17 GHz under the thickness of 1.6 mm, and the best reflection loss (RL) is -18.13 dB at 14.66 GHz. This work expands the study of the effect of the number of shells on microwave absorption properties, and provides a useful reference for the design of microwave absorbers. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页码：542 / 555

页数：14

共 82 条

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