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Issue 48, 2016, Issue in Progress
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Excellent microwave absorption properties of Fe ion-doped SnO2/multi-walled carbon nanotube composites

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Abstract

In this work, Fe ion-doped SnO2/multi-walled carbon nanotubes (MWCNTs) composites were synthesized using a hydrothermal method. X-ray diffraction, TEM, Raman and X-ray photoelectron spectroscopy, and vector network analyses were conducted to demonstrate the structure, interaction, morphology, chemical content, and electromagnetic parameters of the Fe ion-doped SnO2/MWCNTs composites. The as-structured Fe ion-doped SnO2/MWCNTs composites were proven to be outstanding lightweight microwave absorbers when the Fe ion doping percentage was relatively high. Fe ion doping at a molar percentage of 48.8% resulted in a maximum reflection loss (RL) of −44.5 GHz at 15.44 GHz with a layer thickness of 1.5 mm. The maximum RL ≤ −10 dB reached 4.5 GHz at the Ku band. The excellent microwave absorption of the as-prepared composites was principally due to proper attenuation and impedance matching, electric polarization, interfacial polarization, and conductive network. Such composites may have further applications in microwave absorption.

Graphical abstract: Excellent microwave absorption properties of Fe ion-doped SnO2/multi-walled carbon nanotube composites

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Article information


Submitted
20 Feb 2016
Accepted
15 Apr 2016
First published
20 Apr 2016

RSC Adv., 2016,6, 41656-41664
Article type
Paper

Excellent microwave absorption properties of Fe ion-doped SnO2/multi-walled carbon nanotube composites

H. Xing, Z. Liu, L. Lin, L. Wang, D. Tan, Y. Gan, X. Ji and G. Xu, RSC Adv., 2016, 6, 41656
DOI: 10.1039/C6RA04589H

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