Enhancing Low-Frequency Microwave Absorption Through Structural Polarization Modulation of MXenesOACSTPCDEI
Two-dimensional carbon-based materials have shown promising electromagnetic wave absorption capabilities in mid-and high-frequency ranges,but face challenges in low-frequency absorption due to limited control over polarization response mecha-nisms and ambiguous resonance behavior.In this study,we pro-pose a novel approach to enhance absorption efficiency in aligned three-dimensional(3D)MXene/CNF(cellulose nanofibers)cavities by modifying polarization properties and manipulating resonance response in the 3D MXene architecture.This controlled polarization mechanism results in a significant shift of the main absorption region from the X-band to the S-band,leading to a remarkable reflection loss value of-47.9 dB in the low-frequency range.Furthermore,our findings revealed the importance of the oriented electromagnetic coupling in influencing electromagnetic response and microwave absorption properties.The present study inspired us to develop a generic strategy for low-frequency tuned absorption in the absence of magnetic element participation,while orientation-induced polarization and the derived magnetic resonance coupling are the key controlling factors of the method.
Bo Shan;Yang Wang;Xinyi Ji;Yi Huang;
College of Light Industry Science and Engineering,State Key Laboratory of Biobased Fiber Manufacturing Technology,Tianjin University of Science and Technology,Tianjin 300457,People''s Republic of China National Institute for Advanced Materials,Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry,Key Laboratory of Functional Polymer Materials,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),School of Materials Science and Engineering,Nankai University,Tianjin 300350,People''s Republic of ChinaNational Institute for Advanced Materials,Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry,Key Laboratory of Functional Polymer Materials,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),School of Materials Science and Engineering,Nankai University,Tianjin 300350,People''s Republic of China
Hierarchical structureMXeneMicrowave absorptionLow-frequency
《Nano-Micro Letters》 2024 (010)
P.435-452 / 18
financial support from National Key R&D Program of China(MoST,2020YFA0711500);the National Natural Science Foundation of China(NSFC,21875114),(NSFC,52303348),111 Project(B18030);“The Fundamental Research Funds for the Central Universities”,Nankai University.
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