Hydrothermal synthesis of reduced graphene oxide-Co3O 4 composites and the excellent microwave electromagnetic properties

Panbo Liu; Ying Huang; Lei Wang; Meng Zong; Wei Zhang

doi:10.1016/j.matlet.2013.05.136

Hydrothermal synthesis of reduced graphene oxide-Co₃O ₄ composites and the excellent microwave electromagnetic properties

Panbo Liu
, Ying Huang
, Lei Wang
, Meng Zong
, Wei Zhang

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

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

98 Scopus citations

Abstract

Reduced graphene oxide-Co₃O₄ composites (RGO-Co ₃O₄) were synthesized by a simple hydrothermal method and the electromagnetic and microwave absorbing properties of RGO-Co ₃O₄ were investigated for the first time. The diameter of Co₃O₄ nanoparticles is in the range of 5-15 nm. Electromagnetic parameters showed that the electromagnetic attenuation mechanism of RGO-Co₃O₄ is mainly dependent on dielectric loss. The resulting microwave adsorption properties showed that the maximum reflection loss of RGO-Co₃O₄ is up to -43.7 dB at 13.8 GHz and the absorption bandwidth with the reflection loss below -10 dB is 4.6 GHz with a thickness of 3.3 mm. The excellent microwave absorption properties of RGO-Co₃O₄ can be used as an attractive candidate for the new type of microwave absorptive materials.

Original language	English
Pages (from-to)	166-169
Number of pages	4
Journal	Materials Letters
Volume	107
DOIs	https://doi.org/10.1016/j.matlet.2013.05.136
State	Published - 2013

Keywords

Carbon materials
Dielectric loss
Electromagnetic parameters
Magnetic materials
Microwave absorbing properties

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10.1016/j.matlet.2013.05.136

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@article{4e470b5eb5fa43a182a895d43ed29831,

title = "Hydrothermal synthesis of reduced graphene oxide-Co3O 4 composites and the excellent microwave electromagnetic properties",

abstract = "Reduced graphene oxide-Co3O4 composites (RGO-Co 3O4) were synthesized by a simple hydrothermal method and the electromagnetic and microwave absorbing properties of RGO-Co 3O4 were investigated for the first time. The diameter of Co3O4 nanoparticles is in the range of 5-15 nm. Electromagnetic parameters showed that the electromagnetic attenuation mechanism of RGO-Co3O4 is mainly dependent on dielectric loss. The resulting microwave adsorption properties showed that the maximum reflection loss of RGO-Co3O4 is up to -43.7 dB at 13.8 GHz and the absorption bandwidth with the reflection loss below -10 dB is 4.6 GHz with a thickness of 3.3 mm. The excellent microwave absorption properties of RGO-Co3O4 can be used as an attractive candidate for the new type of microwave absorptive materials.",

keywords = "Carbon materials, Dielectric loss, Electromagnetic parameters, Magnetic materials, Microwave absorbing properties",

author = "Panbo Liu and Ying Huang and Lei Wang and Meng Zong and Wei Zhang",

year = "2013",

doi = "10.1016/j.matlet.2013.05.136",

language = "英语",

volume = "107",

pages = "166--169",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Hydrothermal synthesis of reduced graphene oxide-Co3O 4 composites and the excellent microwave electromagnetic properties

AU - Liu, Panbo

AU - Huang, Ying

AU - Wang, Lei

AU - Zong, Meng

AU - Zhang, Wei

PY - 2013

Y1 - 2013

N2 - Reduced graphene oxide-Co3O4 composites (RGO-Co 3O4) were synthesized by a simple hydrothermal method and the electromagnetic and microwave absorbing properties of RGO-Co 3O4 were investigated for the first time. The diameter of Co3O4 nanoparticles is in the range of 5-15 nm. Electromagnetic parameters showed that the electromagnetic attenuation mechanism of RGO-Co3O4 is mainly dependent on dielectric loss. The resulting microwave adsorption properties showed that the maximum reflection loss of RGO-Co3O4 is up to -43.7 dB at 13.8 GHz and the absorption bandwidth with the reflection loss below -10 dB is 4.6 GHz with a thickness of 3.3 mm. The excellent microwave absorption properties of RGO-Co3O4 can be used as an attractive candidate for the new type of microwave absorptive materials.

AB - Reduced graphene oxide-Co3O4 composites (RGO-Co 3O4) were synthesized by a simple hydrothermal method and the electromagnetic and microwave absorbing properties of RGO-Co 3O4 were investigated for the first time. The diameter of Co3O4 nanoparticles is in the range of 5-15 nm. Electromagnetic parameters showed that the electromagnetic attenuation mechanism of RGO-Co3O4 is mainly dependent on dielectric loss. The resulting microwave adsorption properties showed that the maximum reflection loss of RGO-Co3O4 is up to -43.7 dB at 13.8 GHz and the absorption bandwidth with the reflection loss below -10 dB is 4.6 GHz with a thickness of 3.3 mm. The excellent microwave absorption properties of RGO-Co3O4 can be used as an attractive candidate for the new type of microwave absorptive materials.

KW - Carbon materials

KW - Dielectric loss

KW - Electromagnetic parameters

KW - Magnetic materials

KW - Microwave absorbing properties

UR - https://www.scopus.com/pages/publications/84879473057

U2 - 10.1016/j.matlet.2013.05.136

DO - 10.1016/j.matlet.2013.05.136

M3 - 文章

AN - SCOPUS:84879473057

SN - 0167-577X

VL - 107

SP - 166

EP - 169

JO - Materials Letters

JF - Materials Letters

ER -

Hydrothermal synthesis of reduced graphene oxide-Co₃O ₄ composites and the excellent microwave electromagnetic properties

Abstract

Keywords

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