LaFe-MOFs derivatives with different compositions for boosting low-frequency and broadband electromagnetic wave absorption

Materials Today Nano, Journal Year: 2024, Volume and Issue: 28, P. 100528 - 100528

Published: Oct. 9, 2024

Language: Английский

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Regulating the Morphology of Mofs-Derived for Broadband Electromagnetic Wave Absorption

Published: Jan. 1, 2025

For adapting to the complex electromagnetic environment, developing materials with tunable morphology enabling broadband wave (EMW) absorption is undoubtedly a challenging task. In this work, Y2O3/Ni@ N-doped carbon (YNC) composites were prepared by solvothermal method and high-temperature carbonization using metal-organic frameworks (MOFs) as raw materials. By adjusting molar ratio of Y3+/Ni2+, changed from microsphere spiky microspheres, then dumbbell-shape, different morphologies achieved tune impedance matching. Especially, microspheres exhibited stronger EMW performance than other morphologies. When Y3+/Ni2+ was 3:7, minimum reflection loss YNC reached −64.74 dB at 25 wt% filling ratio. At thickness 2.02 mm, effective bandwidth value 6.56 GHz (11.44−18.00 GHz), covering entire Ku band. Notably, controllable matching porous structure in multiple bands (C, X, Ku). The superior attributed composites, achieving balance attenuation capacity. Furthermore, presence magnetic Ni nanoparticles provided capability for composites. Density functional theory indicated that formation heterostructures boosted carrier mobility, facilitating electron transfer across interfaces, thus increasing interfacial polarization. Therefore, study offered novel approach designing rare-earth based MOFs derived absorbers capability.

Language: Английский

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Hollow Engineering of Fe₃O₄@C Composites via a Self-Templated Etching Strategy for Enhanced Electromagnetic Wave Absorption

ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

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MnO₂-coated necklace-like CoFe@carbon nanofiber composites for superior electromagnetic wave absorption

Materials Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Designing heterogeneous interfaces to assemble carbon fibers into necklace-like MnO 2 nanosheet coated CoFe/carbon nanofiber composites for excellent electromagnetic wave absorption performance.

Language: Английский

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PB@COF-derived core–shell Fe/Fe3O4/C composites with excellent electromagnetic wave absorption performance for the entire Ku band

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 159010 - 159010

Published: Dec. 1, 2024

Language: Английский

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