Preparation and electromagnetic wave absorption properties of CoNi@SiO2 microspheres decorated graphene–polyaniline nanosheets

Ying Huang; Jing Yan; Suhua Zhou; Jiayu Yang; Panbo Liu

doi:10.1007/s10854-017-7889-z

Preparation and electromagnetic wave absorption properties of CoNi@SiO₂ microspheres decorated graphene–polyaniline nanosheets

Ying Huang
, Jing Yan
, Suhua Zhou
, Jiayu Yang
, Panbo Liu

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

In this work, we successfully parepared the quaternary composites of CoNi@SiO₂@graphene@PANI via a four-step method. The structures, chemical composition and morphologies of obtained composites are analyzed in detail. The electron microscopy results show spherical CoNi@SiO₂ particles evenly dispersed into the surface of graphene@polyaniline nanosheets. The electromagnetic parameters indicate that CoNi@SiO₂@graphene@PANI exhibits enhanced electromagnetic absorption properties compared to CoNi@SiO₂, which can be mainly attributed to the improved impedance matching and multi-interfacial polarization. The maximum reflection loss of CoNi@SiO₂@graphene@PANI can reach − 43 dB at 15.4 GHz and the absorption bandwidth with the reflection loss exceeding − 10 dB is 5.7 GHz (from 12.3 to 18 GHz) with the thickness of 2 mm. Our results demonstrate the quaternary composites composed of CoNi@SiO₂ microparticles and rGO–PANI nanocomposites can serve as light weight and high-performance EM absorbing material.

Original language	English
Pages (from-to)	70-79
Number of pages	10
Journal	Journal of Materials Science: Materials in Electronics
Volume	29
Issue number	1
DOIs	https://doi.org/10.1007/s10854-017-7889-z
State	Published - 1 Jan 2018

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title = "Preparation and electromagnetic wave absorption properties of CoNi@SiO2 microspheres decorated graphene–polyaniline nanosheets",

abstract = "In this work, we successfully parepared the quaternary composites of CoNi@SiO2@graphene@PANI via a four-step method. The structures, chemical composition and morphologies of obtained composites are analyzed in detail. The electron microscopy results show spherical CoNi@SiO2 particles evenly dispersed into the surface of graphene@polyaniline nanosheets. The electromagnetic parameters indicate that CoNi@SiO2@graphene@PANI exhibits enhanced electromagnetic absorption properties compared to CoNi@SiO2, which can be mainly attributed to the improved impedance matching and multi-interfacial polarization. The maximum reflection loss of CoNi@SiO2@graphene@PANI can reach − 43 dB at 15.4 GHz and the absorption bandwidth with the reflection loss exceeding − 10 dB is 5.7 GHz (from 12.3 to 18 GHz) with the thickness of 2 mm. Our results demonstrate the quaternary composites composed of CoNi@SiO2 microparticles and rGO–PANI nanocomposites can serve as light weight and high-performance EM absorbing material.",

author = "Ying Huang and Jing Yan and Suhua Zhou and Jiayu Yang and Panbo Liu",

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T1 - Preparation and electromagnetic wave absorption properties of CoNi@SiO2 microspheres decorated graphene–polyaniline nanosheets

AU - Huang, Ying

AU - Yan, Jing

AU - Zhou, Suhua

AU - Yang, Jiayu

AU - Liu, Panbo

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In this work, we successfully parepared the quaternary composites of CoNi@SiO2@graphene@PANI via a four-step method. The structures, chemical composition and morphologies of obtained composites are analyzed in detail. The electron microscopy results show spherical CoNi@SiO2 particles evenly dispersed into the surface of graphene@polyaniline nanosheets. The electromagnetic parameters indicate that CoNi@SiO2@graphene@PANI exhibits enhanced electromagnetic absorption properties compared to CoNi@SiO2, which can be mainly attributed to the improved impedance matching and multi-interfacial polarization. The maximum reflection loss of CoNi@SiO2@graphene@PANI can reach − 43 dB at 15.4 GHz and the absorption bandwidth with the reflection loss exceeding − 10 dB is 5.7 GHz (from 12.3 to 18 GHz) with the thickness of 2 mm. Our results demonstrate the quaternary composites composed of CoNi@SiO2 microparticles and rGO–PANI nanocomposites can serve as light weight and high-performance EM absorbing material.

AB - In this work, we successfully parepared the quaternary composites of CoNi@SiO2@graphene@PANI via a four-step method. The structures, chemical composition and morphologies of obtained composites are analyzed in detail. The electron microscopy results show spherical CoNi@SiO2 particles evenly dispersed into the surface of graphene@polyaniline nanosheets. The electromagnetic parameters indicate that CoNi@SiO2@graphene@PANI exhibits enhanced electromagnetic absorption properties compared to CoNi@SiO2, which can be mainly attributed to the improved impedance matching and multi-interfacial polarization. The maximum reflection loss of CoNi@SiO2@graphene@PANI can reach − 43 dB at 15.4 GHz and the absorption bandwidth with the reflection loss exceeding − 10 dB is 5.7 GHz (from 12.3 to 18 GHz) with the thickness of 2 mm. Our results demonstrate the quaternary composites composed of CoNi@SiO2 microparticles and rGO–PANI nanocomposites can serve as light weight and high-performance EM absorbing material.

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DO - 10.1007/s10854-017-7889-z

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SN - 0957-4522

VL - 29

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JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 1

ER -

Preparation and electromagnetic wave absorption properties of CoNi@SiO₂ microspheres decorated graphene–polyaniline nanosheets

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