Fabrication of an Ultralight Ni-MOF-rGO Aerogel with Both Dielectric and Magnetic Performances for Enhanced Microwave Absorption: Microspheres with Hollow Structure Grow onto the GO Nanosheets

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(7), С. 9685 - 9696

Опубликована: Фев. 9, 2023

An ultralight Ni-MOF-rGO aerogel which possess the merits of not only broad bandwidth and strong absorption but also lightweight thin matching thickness is fabricated through a hydrothermal treatment, freeze-drying, annealing procedure. The Ni@C microspheres are dispersed randomly evenly on graphene oxide (GO) nanosheets, can be proved SEM TEM results. electromagnetic parameters composite adjusted by changing mass ratio MOF GO to endow material with both good impedance superior wave performances. Consequently, resulting shows outstanding microwave performance, achieves (−51.19 dB) effective (6.32 GHz) 1.9 mm while filling content 2 wt %. In addition, multiple loss mechanisms illustrated, including conduction loss, dipolar polarization, interfacial magnetic resonance, eddy current loss. word, extraordinary performance ascribed synergistic effects unique layered structure hollow core–shell microsphere. This work demonstrates that excellent promising strategy for application.

Язык: Английский

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Structural engineering and compositional manipulation for high-efficiency electromagnetic microwave absorption

Materials Today Physics, Год журнала: 2022, Номер 27, С. 100801 - 100801

Опубликована: Авг. 3, 2022

Язык: Английский

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Construct of CoZnO/CSP biomass-derived carbon composites with broad effective absorption bandwidth of 7.2 GHz and excellent microwave absorption performance

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 639, С. 160 - 170

Опубликована: Фев. 15, 2023

Язык: Английский

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A Regulable Polyporous Graphite/Melamine Foam for Heat Conduction, Sound Absorption and Electromagnetic Wave Absorption

Small, Год журнала: 2023, Номер 20(11)

Опубликована: Ноя. 5, 2023

Abstract To reduce electromagnetic interference and noise pollution within communication base stations servers, it is necessary for wave absorption (EWA) materials to transition from coating multifunctional devices. Up now, the stable effective integration of multiple functions into one material by a simple method has remained large challenge. Herein, foam‐type microwave device assembled with multicomponent organic matter graphite powder synthesized universal combination process. Melamine phenolic aldehyde amine work as skeleton cementing compound, respectively, in which embedded compound interconnected mesoscopic 3D electric conductive heat network. Interestingly, prepared flexible graphite/melamine foam (CMF) delivers great EWA performance, bandwidth 9.8 GHz, ultrathin thickness 2.60 mm, strong reflection loss −41.7 dB. Moreover, CMF possesses porosity flexibility, endowing sound ability. The unique its EWA, conduction, absorption, mechanical robustness, well cost‐effective scalable manufacturing. These attributes make promising widely used stations, chips protection.

Язык: Английский

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Controlled formation of multiple core-shell structures in metal-organic frame materials for efficient microwave absorption

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 648, С. 25 - 36

Опубликована: Июнь 5, 2023

Язык: Английский

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