Hierarchically three-dimensional ZrO2/Fe3O4/C nanocomposites with Janus structure for high-efficiency electromagnetic wave absorption

Hierarchically three-dimensional (3D) materials present a pivotal challenge and opportunity in achieving effective microwave absorption with synergistic effects. In this work, α-Fe2O3@ZrO2 with core-shell structure were fabricated in-situ on aramid nanofibers by a solvothermal method. Following calc...

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Bibliographic Details
Published in:Journal of materials science & technology Vol. 195; pp. 126 - 135
Main Authors: Xue, Ying, Liu, Xianyuan, Lu, Xianyong
Format: Journal Article
Language:English
Published: Elsevier Ltd 01.10.2024
Subjects:
Core-shell structure
Dual synergistic effects
Electromagnetic wave absorption
Janus structure
Lattice mismatch
Core-shell structure
Electromagnetic wave absorption
Janus structure
Dual synergistic effects
Lattice mismatch
ISSN:1005-0302, 1941-1162
Online Access:Get full text
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Summary:Hierarchically three-dimensional (3D) materials present a pivotal challenge and opportunity in achieving effective microwave absorption with synergistic effects. In this work, α-Fe2O3@ZrO2 with core-shell structure were fabricated in-situ on aramid nanofibers by a solvothermal method. Following calcination, 3D ZrO2/Fe3O4/C nanocomposites with Janus structure have been successfully synthesized. By controlling the lattice match and mismatch in both processes, a core-shell structure of α-Fe2O3@ZrO2 and Janus structure of ZrO2/Fe3O4 have been well-define performed. The composite material ZrO2/Fe3O4/C-700 has a minimum reflection loss (RLmin) of −67.4 dB at a thickness of 2.0 mm. The effective absorption bandwidth (EAB) at a thickness of 2.4 mm is 6.0 GHz (11.0–17.0 GHz). This study provides a novel strategy for fabricating high-efficiency electromagnetic wave absorption materials with dual synergistic effects in nanosized scale.
ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2024.02.031