Hierarchical Engineering of Double-Shelled Nanotubes toward Hetero-Interfaces Induced Polarization and Microscale Magnetic Interaction

Panbo Liu; Yi Wang; Guozheng ZhangYing HuangRuixuan ZhangXianhu LiuXuefeng Zhangand Renchao Che

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Hierarchical Engineering of Double-Shelled Nanotubes toward Hetero-Interfaces Induced Polarization and Microscale Magnetic Interaction

机译：Hierarchical Engineering of Double-Shelled Nanotubes toward Hetero-Interfaces Induced Polarization and Microscale Magnetic Interaction

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Hierarchical engineering of suitable dielectric-magnetic multicomponentsshows good performance for microwave absorbers, but still face bottlenecks.Herein, hierarchical double-shelled nanotubes (DSNTs), in which theinner magnetic tubular subunits are assembled by magnetic-heteroatomiccomponents through cation-exchange reactions, and the outer dielectricMnO2 nanosheets strengthen the synergistic interactions between confinedheterogeneous interfaces are ingeniously designed and constructed. Heterointerfacesinduced polarization is proposed to investigate the interfacialrelaxation mechanism, and magnetic loss, closely related to the micrometerscalemagnetic units, is mainly clarified by the magnetic interaction composedof magnetic coupling and magnetic diffraction; both of them are clearlyconfirmed by Lorentz off-axis electron holography. The obtained hierarchicalDSNTs demonstrate efficient microwave absorption with an optimal reflectionloss of ?54.7 dB and qualified absorption bandwidth of 9.5 GHz owingto desirable heterogeneous interfaces, multiple magnetic heteroatomiccomponents and hollow hierarchical microstructures. This strategy inspires ageneralized methodology for the engineering of hollow hierarchical configurationswith multishells, the combination of proposed hetero-interfaces inducedpolarization and microscale magnetic interaction broadens the dielectricmagneticsynergistic mechanism of the topography–performance relationshipfor microwave absorption materials.

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《Advanced functional materials》 |2022年第33期|2202588.1-2202588.9|共9页
作者
Panbo Liu; Yi Wang; Guozheng ZhangYing HuangRuixuan ZhangXianhu LiuXuefeng Zhangand Renchao Che;
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作者单位

School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710129, P. R. China;

Laboratory of Advanced MaterialsShanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438, P. R. China;

Key Laboratory of Materials Processing and MoldZhengzhou UniversityMinistry of EducationZhengzhou 450002, P. R. ChinaInstitute of Advanced Magnetic MaterialsCollege of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310012, P. R. ChinaLaboratory of Advanced MaterialsShanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438, P. R. China,Joint-Research Center for Computational MaterialsZhejiang LaboratoryHangzhou 311100;

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hetero-interfaces; hollow architectures; magnetic interaction; microwave absorption; polarization relaxation;

Hierarchical Engineering of Double-Shelled Nanotubes toward Hetero-Interfaces Induced Polarization and Microscale Magnetic Interaction

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