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 - 2025/3/12
Y1 - 2025/3/12
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 - http://www.scopus.com/inward/record.url?scp=105000342216&partnerID=8YFLogxK
U2 - 10.1002/admi.202500075
DO - 10.1002/admi.202500075
M3 - Article
SN - 2196-7350
SP - 1
EP - 9
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
M1 - 2500075
ER -