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题名: Fe3C/helical carbon nanotube hybrid: Facile synthesis and spin-induced enhancement in microwave-absorbing properties
作者: Tang, Hui; Jian, Xian; Wu, Biao; Liu, Shiyu; Jiang, Zhicheng; Chen, Xiangnan; Lv, Weiqiang; He, Weidong; Tian, Wei; Wei, Yufeng; Gao, Yuqi; Chen, Tong; Li, Gang
刊名: COMPOSITES PART B-ENGINEERING
出版日期: 2016-12-15
卷号: 107, 期号:0, 页码:51-58
关键词: Helical carbon nanotubes ; Fe3O4 nanoparticles ; Hybrid nanocrystals ; Microwave absorption
DOI: 10.1016/j.compositesb.2016.09.003
部门归属: 环境化学与生态毒理学国家重点实验室
英文摘要: Exploring effective microwave absorption materials is always a challenge especially in the relatively low frequency range of 2-8 GHz and broad absorption band. Here we developed a Fe3C/helical carbon nanotube (HCNT) hybrid structures synthesized via catalytic chemical vapor deposition (CCVD) using Fe3O4 nanoparticles as catalyst. The microwave-absorbing characteristics of such hybrid nanomaterials were investigated based on the transmission line theory through the evaluation of the experimental data including complex permittivity and permeability. Considering the reaction temperature range of 400-750 degrees C, the as-prepared hybrid synthesized at 700 degrees C can be adjusted to have effective performance of RL value less than -10 dB in the relatively lower frequency ranged from 2.9 GHz to 9.9 GHz at the thickness range of 2-5 mm. Furthermore, the hybrid in case of 750 degrees C bears bandwidths with RL lower than -10 dB from 7.3 GHz to 18 GHz and the minimum RL is about -21 dB. The observed advantageous reflection loss was attributed to the pronounced impedance match owing to the reasonable synergistic effect between magnetic nanoparticles and HCNTs. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35856
Appears in Collections:环境化学与生态毒理学国家重点实验室_期刊论文

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Recommended Citation:
Tang, Hui,Jian, Xian,Wu, Biao,et al. Fe3C/helical carbon nanotube hybrid: Facile synthesis and spin-induced enhancement in microwave-absorbing properties[J]. COMPOSITES PART B-ENGINEERING,2016,107(0):51-58.
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