Large-scale synthesis, electromagnetic and enhanced microwave absorption properties of low helicity carbon nanotubes/Fe nanoparticles hybrid

被引：14

作者：

Qi, Xiaosi ^{[1
,2
,3
]}

Zhong, Wei ^{[2
,3
]}

Deng, Chaoyong ^{[1
]}

Au, Chaktong ^{[4
]}

Du, Youwei ^{[2
,3
]}

机构：

[1] Guizhou Univ, Dept Phys, Guiyang 550025, Peoples R China

[2] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Jiangsu Prov Lab Nanotechnol, Nanjing 210093, Jiangsu, Peoples R China

[4] Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 107卷

基金：

中国国家自然科学基金;

关键词：

Carbon nanotubes; Chemical vapor decomposition; Electrical property;

D O I：

10.1016/j.matlet.2013.06.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Large-scale of low helicity carbon nanotubes filled with Fe nanoparticles have been synthesized by pyrolysis of acetylene at 600 degrees C over Fe2O3 nanotubes derived from the hydrothermal method. The electromagnetic parameters and microwave absorbing properties were investigated in the 0.5-18 GHz frequency range. A maximum reflection loss (RL) value of the obtained sample is ca. 39.40 dB at 11.14 GHz. The RL value below -10 dB (90% absorption) can be obtained almost in the whole frequency range, and enhanced absorption of electromagnetic wave (reflection loss <-20 dB) was observed in the 7.66-11.14 GHz range (1.2-3.0 mm thickness). The results indicate that the obtained sample exhibits excellent microwave-absorbing ability and is a potential light-weight microwave absorber. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：374 / 377

页数：4

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