期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 898, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.162833
关键词
Fe; Fe 3 C nanoparticle; Bamboo-like carbon nanotube; Metal organic framework; Electromagnetic wave absorption; Thin wall thickness
资金
- NNSF of China [51972077]
- Fundamental Research Funds for the Central Universities [3072021CFT2506, 3072021CF2523, 3072021CF2524]
- Heilongjiang Touyan Innovation Team Program
Nitrogen-doped bamboo-like carbon nanotubes with embedded Fe/Fe3C nanoparticles were successfully fabricated. It exhibited enhanced dielectric and magnetic loss performance due to its excellent electrical conductivity, massive interfaces between Fe/Fe3C and NCNTs, and a large number of defects and void spaces. Additionally, it showed outstanding impedance matching characteristic and promising potential for electromagnetic wave absorption.
Nitrogen-doped bamboo-like carbon nanotubes with embedded Fe/Fe3C nanoparticles (NPs) (Fe/Fe3C@ NCNTs) were successfully fabricated by the pyrolysis of the metal organic framework. When the pyrolysis temperature was 800 degrees C, the length and diameter of NCNTs were in the ranges 8-20 mu m and 17-130 nm, respectively. Remarkably, the wall thickness of the NCNTs was merely 5.0 nm. The Fe/Fe3C@NCNTs-80 0 exhibits enhanced dielectric and magnetic loss performance attributing to its excellent electrical conductivity, massive interfaces between Fe/Fe3C and NCNTs, and a large number of defects and void spaces between bamboo joints. In addition, the Fe/Fe3C@NCNTs-80 0 also has outstanding impedance matching characteristic, and thus its minimal reflection loss and effective absorption bandwidth reached -50.8 dB with a thickness of 1.6 mm and 4.3 GHz with a thickness of 1.4 mm, respectively. The results of this study demonstrate the Fe/Fe3C@NCNTs-80 0 as a promising candidate for electromagnetic wave absorption. (c) 2021 Elsevier B.V. All rights reserved.
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