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Journal of Materials Science
Published in: Journal of Materials Science 21/2016

15-07-2016 | Original Paper

The electromagnetic property and microwave absorption of wormhole-like mesoporous carbons with different surface areas

Authors: Haiping Zhu, Haiyan Zhang, Yiming Chen, Zhenghui Li, Danfeng Zhang, Guoxun Zeng, Yingxin Huang, Wenguang Wang, Qibai Wu, Chunyi Zhi

Published in: Journal of Materials Science | Issue 21/2016

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Abstract

A sol–gel method has been utilized for synthesizing the wormhole-like mesoporous carbon (WMC), in which the gel skeleton can be regulated by using hydrofluoric acid and sulfuric acid. The electromagnetic characteristics of a series of WMCs with different surface areas embedded in paraffin at 15 wt% loading at 2–18 GHz were investigated. The electric conductivity of WMCs gradually increases with the decrease of surface area, leading to an increase in complex permittivity through dielectric loss. A minimum reflection loss (RL) value of −68.41 dB and a broader absorption band (reach 9.8 GHz) with RL values less than −10 dB are obtained, due to WMC’s well matching the characteristic impedance and dielectric loss, implying its great potential as a microwave absorbing material.
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Metadata
Title
The electromagnetic property and microwave absorption of wormhole-like mesoporous carbons with different surface areas
Authors
Haiping Zhu
Haiyan Zhang
Yiming Chen
Zhenghui Li
Danfeng Zhang
Guoxun Zeng
Yingxin Huang
Wenguang Wang
Qibai Wu
Chunyi Zhi
Publication date
15-07-2016
Publisher
Springer US
Published in
Journal of Materials Science / Issue 21/2016
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0206-z

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