Enhanced microwave absorption performance of light weight N-doped carbon nanoparticles

被引：10
作者：
Chen, Jianxin [1 ,2 ]
Miao, Peng [1 ]
Lin, E. Emily [2 ]
Bai, Ting [1 ]
Smoukov, Stoyan K. [2 ]
Kong, Jie [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Chem & Chem Engn, Shaanxi Key Lab Macromol Sci & Technol, MOE Key Lab Mat Phys & Chem Extraordinary Condit, Xian 710072, Peoples R China
[2] Queen Mary Univ London, Sch Engn & Mat Sci, Act & Intelligent Mat Lab, Mile End Rd, London E1 4NS, England
来源：
RSC ADVANCES | 2021年 / 11卷 / 14期
基金：
中国博士后科学基金;
关键词：
D O I：
10.1039/d0ra08455g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Microwave absorbents with specific morphology and structure have fundamental significance for tuning microwave absorption (MA). Herein, N-doped carbon sphere nanoparticles and hollow capsules were successfully fabricated via oxidative polymerization of dopamine in different mixed solutions, without any template preparation or etching process. Compared to solid particles, the microwave absorbents consisting of N-doped carbon with a hollow structure showed enormously enhanced MA performance, exhibiting a broad effective absorption bandwidth (from 12.7 GHz to 17.9 GHz) and a minimum reflection loss of -27.2 dB with a sample thickness of 2.0 mm. This work paves an attractive way for simple and eco-friendly preparation of advanced light weight microwave absorbents.
引用
收藏
页码：7954 / 7960
页数：7
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