Volume 18, Issue 3 2104380
Research Article

Hierarchical Ti3C2Tx MXene/Carbon Nanotubes Hollow Microsphere with Confined Magnetic Nanospheres for Broadband Microwave Absorption

Chang Zhang

Chang Zhang

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Zhengchen Wu

Zhengchen Wu

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Chunyang Xu

Chunyang Xu

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Bintong Yang

Bintong Yang

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Lei Wang

Lei Wang

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Wenbin You

Wenbin You

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

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Renchao Che

Corresponding Author

Renchao Che

Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438 P. R. China

Department of Materials Science, Fudan University, Shanghai, 200438 P. R. China

E-mail: [email protected]

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First published: 16 December 2021
Citations: 72

Abstract

Hierarchical hollow structure with unique interfacial properties holds great potential for microwave absorption (MA). Ti3C2Tx MXene has been a hot topic due to rich interface structure, abundant defects, and functional groups. However, its overhigh permittivity and poor aggregation-resistance limit the further application. Herein, a hierarchical MXene-based hollow microsphere is prepared via a facile spray drying strategy. Within the microsphere, few-layered MXene nanosheets are separated by dispersed carbon nanotubes (CNTs), exposing abundant dielectric polarization interfaces. Besides, numerous magnetic Fe3O4 nanospheres are uniformly dispersed and confined within nano-cavities between 1D network and 2D framework. Such a novel structure simultaneously promotes interfacial polarization by ternary MXene/CNTs/Fe3O4 interfaces, enhances magnetic loss by microscale and nanoscale coupling network, enlarges conduction loss by MXene/CNTs dual-network, and optimizes impedance matching by hierarchical porous structure. Therefore, Fe3O4@Ti3C2Tx/CNTs composite achieves excellent MA property with a maximum reflection loss of −40.1 dB and an effective bandwidth of 5.8 GHz at the thickness of only 2 mm. This work demonstrates a feasible hierarchical structure design strategy for multi-dimension MXene composite to realize the high-efficiency MA performance.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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