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Nano Research 2024, 17(3): 1687-1698 https://doi.org/10.1007/s12274-023-6231-z
Research Article | Issue | Published: 02 December 2023

Facile fabrication of graphene/g-C3N4 for electromagnetic wave absorption

Show Author's Information Qiang Su1,2,  Yunfei He1,  Dongdong Liu1( ),  Daguang Li3,  Long Xia1,  Xiaoxiao Huang4,  Bo Zhong1( )
School of Materials Science and Engineering, Harbin Institute of Technology Weihai, Weihai 264209, China
Weihai Yunshan Technology Co., Ltd., Weihai 264200, China
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, China
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Keywords:
simulation analysis, impedance matching, dielectric loss, graphene/g-C3N4, excellent electromagnetic wave absorption
Topics:
Nanostructured materialsSurface structure
Cite this article:
Su Q, He Y, Liu D, et al. Facile fabrication of graphene/g-C3N4 for electromagnetic wave absorption. Nano Research, 2024, 17(3): 1687-1698. https://doi.org/10.1007/s12274-023-6231-z
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Abstract Full text Electronic supplementary material About this article

With the development of the miniaturization of electronic equipment and lightweight weapon equipment, there are new requirements for electromagnetic wave absorption material (EMWAM). EMWAM has outstanding electromagnetic wave absorption properties and lightweight characteristics become an important direction of research. In this study, graphene/g-C3N4 (GGCN) EMWAM was first synthesized in situ by simple heat treatment, in which the g-C3N4 had a porous structure and dispersed on the surface of graphene. The impedance matching of the GGCN was well adjusted by decreasing the dielectric constant and attenuation constant due to the g-C3N4 semiconductor property and the graphite-like structure. The EMW loss mechanism of GGCN was also analyzed by simulating GGCN’s electric field mode distribution and resistance loss power density. The analysis result shows that the distribution of g-C3N4 among GGCN sheets can produce more polarization effects and relaxation effects by increasing the lamellar spacing. Furthermore, the polarization loss of GGCN could be increased successfully by porous g-C3N4. Ultimately, the EMW absorption property of GGCN is optimized significantly, and GGCN exhibits excellent EMW absorption performance. When the thickness is 2 mm, the effective absorption bandwidth (EAB) can reach 4.6 GHz, and when the thickness is 4.5 mm, the minimum reflection loss (RLmin) at 4.56 GHz can reach −34.69 dB. Moreover, the practical application of EMWAM was studied by radar cross-section (RCS) simulation, showing that GGCN has a good application prospect.


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About this article

Facile fabrication of graphene/g-C3N4 for electromagnetic wave absorption

Show Author's information Qiang Su1,2, Yunfei He1, Dongdong Liu1( ), Daguang Li3, Long Xia1, Xiaoxiao Huang4, Bo Zhong1( )
School of Materials Science and Engineering, Harbin Institute of Technology Weihai, Weihai 264209, China
Weihai Yunshan Technology Co., Ltd., Weihai 264200, China
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, China
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract

With the development of the miniaturization of electronic equipment and lightweight weapon equipment, there are new requirements for electromagnetic wave absorption material (EMWAM). EMWAM has outstanding electromagnetic wave absorption properties and lightweight characteristics become an important direction of research. In this study, graphene/g-C3N4 (GGCN) EMWAM was first synthesized in situ by simple heat treatment, in which the g-C3N4 had a porous structure and dispersed on the surface of graphene. The impedance matching of the GGCN was well adjusted by decreasing the dielectric constant and attenuation constant due to the g-C3N4 semiconductor property and the graphite-like structure. The EMW loss mechanism of GGCN was also analyzed by simulating GGCN’s electric field mode distribution and resistance loss power density. The analysis result shows that the distribution of g-C3N4 among GGCN sheets can produce more polarization effects and relaxation effects by increasing the lamellar spacing. Furthermore, the polarization loss of GGCN could be increased successfully by porous g-C3N4. Ultimately, the EMW absorption property of GGCN is optimized significantly, and GGCN exhibits excellent EMW absorption performance. When the thickness is 2 mm, the effective absorption bandwidth (EAB) can reach 4.6 GHz, and when the thickness is 4.5 mm, the minimum reflection loss (RLmin) at 4.56 GHz can reach −34.69 dB. Moreover, the practical application of EMWAM was studied by radar cross-section (RCS) simulation, showing that GGCN has a good application prospect.

Keywords: simulation analysis, impedance matching, dielectric loss, graphene/g-C3N4, excellent electromagnetic wave absorption

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Publication history
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Acknowledgements

Publication history

Received: 22 August 2023
Revised: 20 September 2023
Accepted: 22 September 2023
Published: 02 December 2023
Issue date: March 2024

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 51872058), the Supporting Program for Innovation Team of Outstanding Youth in Colleges and Universities of Shandong Province (No. 2020KJA005), and the Natural Science Foundation of Shandong Province (No. ZR2022QB156).

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