Carbonization tuned core-shell Fe3O4@C nanostructures with enhanced electromagnetic wave absorption

Jiang Guo; Yukun Sun; Guangmin Zhao; Mohamed H. Helal; Duo Pan; Hamdy Khamees Thabet; Wenling Wu; Waras Abdul; Zeinhom M. El-Bahy; Hassan Algadi; Zhanhu Guo; Jianfeng Zhu

doi:10.1002/admi.202500075

Carbonization tuned core-shell Fe3O4@C nanostructures with enhanced electromagnetic wave absorption

Jiang Guo^*, Yukun Sun, Guangmin Zhao, Mohamed H. Helal, Duo Pan^*, Hamdy Khamees Thabet, Wenling Wu, Waras Abdul, Zeinhom M. El-Bahy, Hassan Algadi, Zhanhu Guo^*, Jianfeng Zhu^*

^*Corresponding author for this work

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

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Abstract

With the advent of high-power electronic devices, communication satellites, and military radar systems, electromagnetic (EM) waves have caused significant pollution. In this work, hollow Fe3O4@C (H-FO@C) composites are synthesized by employing an in situ polymerization and carbonization treatment. Effects of carbonization temperature on electromagnetic wave absorption of core-shell structured H-FO@C composites are symmetrically analyzed, and the impedance matching and attenuation ability are improved significantly by controlling carbonization temperature. The reflection loss (RL) and effective absorption bandwidth (EAB) of H-FO@C composites carbonized at 650 °C are improved to −51.85 dB and 5.36 GHz (thickness 2.1 mm), respectively. When the thickness of composites increases from 2.1 to 2.4 mm, the EAB reaches 6.24 GHz. According to CST Studio Suit, the radar cross section (RCS) reduction value can be 24.26 dB m2 for H-FO@C composites. Both experiment and simulation results confirm that the H-FO@C composites possess excellent EWA performance. This work provides a new way for advancing EWA materials.

Original language	English
Article number	2500075
Number of pages	9
Journal	Advanced Materials Interfaces
Volume	12
Issue number	13
Early online date	12 Mar 2025
DOIs	https://doi.org/10.1002/admi.202500075
Publication status	Published - 14 Jul 2025

Keywords

Fe O @C composites
core-shell
electromagnetic wave absorption

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10.1002/admi.202500075Licence: CC BY

main text - 15 cleanAccepted author manuscript, 1.4 MBLicence: CC BY
Adv Materials Inter - 2025 - Guo - Carbonization Tuned Core‐Shell Fe3O4 C Nanostructures with Enhanced Electromagnetic WaveFinal published version, 6.09 MBLicence: CC BY

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title = "Carbonization tuned core-shell Fe3O4@C nanostructures with enhanced electromagnetic wave absorption",

abstract = "With the advent of high-power electronic devices, communication satellites, and military radar systems, electromagnetic (EM) waves have caused significant pollution. In this work, hollow Fe3O4@C (H-FO@C) composites are synthesized by employing an in situ polymerization and carbonization treatment. Effects of carbonization temperature on electromagnetic wave absorption of core-shell structured H-FO@C composites are symmetrically analyzed, and the impedance matching and attenuation ability are improved significantly by controlling carbonization temperature. The reflection loss (RL) and effective absorption bandwidth (EAB) of H-FO@C composites carbonized at 650 °C are improved to −51.85 dB and 5.36 GHz (thickness 2.1 mm), respectively. When the thickness of composites increases from 2.1 to 2.4 mm, the EAB reaches 6.24 GHz. According to CST Studio Suit, the radar cross section (RCS) reduction value can be 24.26 dB m2 for H-FO@C composites. Both experiment and simulation results confirm that the H-FO@C composites possess excellent EWA performance. This work provides a new way for advancing EWA materials.",

keywords = "Fe O @C composites, core-shell, electromagnetic wave absorption",

author = "Jiang Guo and Yukun Sun and Guangmin Zhao and Helal, \{Mohamed H.\} and Duo Pan and Thabet, \{Hamdy Khamees\} and Wenling Wu and Waras Abdul and El-Bahy, \{Zeinhom M.\} and Hassan Algadi and Zhanhu Guo and Jianfeng Zhu",

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TY - JOUR

T1 - Carbonization tuned core-shell Fe3O4@C nanostructures with enhanced electromagnetic wave absorption

AU - Guo, Jiang

AU - Sun, Yukun

AU - Zhao, Guangmin

AU - Helal, Mohamed H.

AU - Pan, Duo

AU - Thabet, Hamdy Khamees

AU - Wu, Wenling

AU - Abdul, Waras

AU - El-Bahy, Zeinhom M.

AU - Algadi, Hassan

AU - Guo, Zhanhu

AU - Zhu, Jianfeng

PY - 2025/7/14

Y1 - 2025/7/14

N2 - With the advent of high-power electronic devices, communication satellites, and military radar systems, electromagnetic (EM) waves have caused significant pollution. In this work, hollow Fe3O4@C (H-FO@C) composites are synthesized by employing an in situ polymerization and carbonization treatment. Effects of carbonization temperature on electromagnetic wave absorption of core-shell structured H-FO@C composites are symmetrically analyzed, and the impedance matching and attenuation ability are improved significantly by controlling carbonization temperature. The reflection loss (RL) and effective absorption bandwidth (EAB) of H-FO@C composites carbonized at 650 °C are improved to −51.85 dB and 5.36 GHz (thickness 2.1 mm), respectively. When the thickness of composites increases from 2.1 to 2.4 mm, the EAB reaches 6.24 GHz. According to CST Studio Suit, the radar cross section (RCS) reduction value can be 24.26 dB m2 for H-FO@C composites. Both experiment and simulation results confirm that the H-FO@C composites possess excellent EWA performance. This work provides a new way for advancing EWA materials.

AB - With the advent of high-power electronic devices, communication satellites, and military radar systems, electromagnetic (EM) waves have caused significant pollution. In this work, hollow Fe3O4@C (H-FO@C) composites are synthesized by employing an in situ polymerization and carbonization treatment. Effects of carbonization temperature on electromagnetic wave absorption of core-shell structured H-FO@C composites are symmetrically analyzed, and the impedance matching and attenuation ability are improved significantly by controlling carbonization temperature. The reflection loss (RL) and effective absorption bandwidth (EAB) of H-FO@C composites carbonized at 650 °C are improved to −51.85 dB and 5.36 GHz (thickness 2.1 mm), respectively. When the thickness of composites increases from 2.1 to 2.4 mm, the EAB reaches 6.24 GHz. According to CST Studio Suit, the radar cross section (RCS) reduction value can be 24.26 dB m2 for H-FO@C composites. Both experiment and simulation results confirm that the H-FO@C composites possess excellent EWA performance. This work provides a new way for advancing EWA materials.

KW - Fe O @C composites

KW - core-shell

KW - electromagnetic wave absorption

UR - https://www.scopus.com/pages/publications/105000342216

U2 - 10.1002/admi.202500075

DO - 10.1002/admi.202500075

M3 - Article

SN - 2196-7350

VL - 12

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

IS - 13

M1 - 2500075

ER -

Carbonization tuned core-shell Fe3O4@C nanostructures with enhanced electromagnetic wave absorption

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