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Research Article

Multifunctional MXene/rGO aerogels loaded with Co/MnO nanocomposites for enhanced electromagnetic wave absorption, thermal insulation and pressure sensing

Chan Guo1, Shiping Shao1, Xin Zhang1, Yunxiang Tang1( ), Luxue Wang1, Jiurong Liu1( ), Lili Wu1, Ke Bi2( ), Fenglong Wang1( )
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan 250061, China
State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
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Graphical Abstract

The ultralight Co/MnO/Ti3C2Tx MXene/rGO (CMMG) hybrid aerogels with a three-dimensional (3D) vertical channel structure were fabricated, achieving an optimal minimal reflection loss (RLmin) of −77.41 dB and a maximum effective absorption bandwidth (EAB) of 6.56 GHz. The aerogel displays remarkable hydrophobicity, exceptional thermal insulation capabilities, and outstanding photothermal properties while sensitively detecting electrical signals from pressure variations and human motion.

Abstract

Aerogel-based composites hold promising application prospects as potential electromagnetic wave (EMW) absorption materials, yet the construction of such materials with ingenious microstructures, appropriate magnetic/dielectric multi-components, and integrated multifunctionality remains considerably challenging. Herein, a multicomponent Co/MnO/Ti3C2Tx MXene/rGO (CMMG) hybrid aerogel featured with three-dimensional (3D) vertical directional channel architecture is reported. Benefiting from the synergistic effect arising from the 3D conductive networking structure, diverse heterogeneous interfaces, magnetic/dielectric multicomponent, and multiple loss pathways, the optimized CMMG-2 aerogel delivers fascinating EMW absorption capabilities, characterized by a minimal reflection loss (RLmin) of −77.41 dB and an effective absorption bandwidth (EAB) of 6.56 GHz. Additionally, the remarkable hydrophobicity, exceptional thermal insulation capabilities, and outstanding photothermal properties of CMMG-2 aerogel make it highly promising for multiple application in diverse and demanding environments. Interestingly, the distinctive pore structure of hybrid aerogel also allows it for sensitive and reliable detection of electrical signals caused by pressure changes and human motion. Thus, this research provides a viable design strategy for the development of lightweight, efficient, and multifunctional aerogel-based EMW absorption materials for various application scenarios.

Keywords

electromagnetic wave absorptionTi3C2Tx MXenereduced graphene oxidemagnetic-dielectric nanoparticlesmultifunctional aerogel

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Nano Research
Volume 17 Issue 9,
September 2024
Pages 7803-7813
DOI: 10.1007/s12274-024-6840-x
Cite this article:
Guo C, Shao S, Zhang X, et al. Multifunctional MXene/rGO aerogels loaded with Co/MnO nanocomposites for enhanced electromagnetic wave absorption, thermal insulation and pressure sensing. Nano Research, 2024, 17(9): 7803-7813. https://doi.org/10.1007/s12274-024-6840-x
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Received: 14 April 2024
Revised: 05 June 2024
Accepted: 24 June 2024
Published: 27 July 2024
© Tsinghua University Press 2024
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