“Two birds one stone” strategy to integrate electromagnetic wave absorption and self-anticorrosion in magnetic nanocomposites with double-shell hollow structure

Journal of Material Science and Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

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NiFe2O4/Ni3Fe nanoparticles Decorate wood carbon strategies for efficient electromagnetic absorption

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160354 - 160354

Опубликована: Фев. 1, 2025

Язык: Английский

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Regulating Heterogeneous Charge Distribution/Magnetic Resonance via Ligand Constraints for Enhanced Electromagnetic Wave Absorption

Carbon, Год журнала: 2025, Номер unknown, С. 120244 - 120244

Опубликована: Март 1, 2025

Язык: Английский

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Mesoporous carbon spheres modified with atomically dispersed iron sites for efficient electromagnetic wave absorption

Carbon, Год журнала: 2024, Номер 231, С. 119699 - 119699

Опубликована: Окт. 10, 2024

Язык: Английский

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

Опубликована: Янв. 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.

Язык: Английский

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Enhanced electromagnetic wave absorption performance of multi-layer Fe3O4@rGO composite absorber

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162434 - 162434

Опубликована: Янв. 1, 2025

Язык: Английский

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Electroless plated of Ni-P@SiC nanowire composite for high-performance EMW absorption by tailoring Impedance matching

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 178795 - 178795

Опубликована: Янв. 1, 2025

Язык: Английский

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The vertically oriented CFs@Al2O3 filled silicone rubber elastomer material to construct effective electromagnetic wave absorption network and high thermal conductivity path

Diamond and Related Materials, Год журнала: 2025, Номер 153, С. 112021 - 112021

Опубликована: Янв. 25, 2025

Язык: Английский

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A New Type Microwave Absorption Materials: Metal–Organic‐Frameworks (MOFs) Used as Non‐Conductive Material Combination with P‐C‐800

Advanced Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 8, 2025

Abstract Metal–Organic‐Frameworks (MOFs) are commonly used as microwave‐absorbing materials after pyrolysis treatment. Rare researchers treat MOFs non‐conductive and use them absorbing directly. In this paper, MOFs@P‐C‐800 composite prepared adopt to hydrothermal ultrasonic dispersion methods by regulating the morphological characteristics of content P‐C‐800. As for Co‐BDC‐P‐C‐800, maximum reflection loss reaches −18.4 dB at 14.29 GHz effective absorption bandwidth (EAB) achieves 3.87 from 13.5 17.37 GHz. After contents P‐C‐800 is adjusted, Co‐BDC‐P‐C‐800 (0.05 g) exhibited excellent microwave performance, RL value −60 13 with a thickness 2.0 mm, EAB 5.91 12.02 17.93 This paper not only provides new application direction MOFs, but also offers promising research development materials.

Язык: Английский

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Modulating Electromagnetic Genes Through Bi-Phase High-Entropy Engineering Toward Temperature-Stable Ultra-Broadband Megahertz Electromagnetic Wave Absorption

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Фев. 25, 2025

Abstract Magnetic absorbers with high permeability have significant advantages in low-frequency and broadband electromagnetic wave (EMW) absorption. However, the insufficient magnetic loss inherent conductivity of existing limit further expansion EMW absorption bandwidth. Herein, spinel (FeCoNiCrCu) 3 O 4 high-entropy oxides (HEO) are successfully constructed on surface FeCoNiCr 0.4 Cu 0.2 alloys (HEA) through low-temperature oxygen bath treatment. On one hand, HEO HEA different magnetocrystalline anisotropies, which is conducive to achieving continuous natural resonance improve loss. other low can serve as an impedance matching layer, magneto-electric co-modulation. When thickness 5 mm, minimum reflection (RL) value bandwidth (RL < − dB) bi-phase composites (BPHEC) reach 12.8 dB 633 MHz, respectively. The RCS reduction multilayer sample gradient characteristic 18.34 m 2 . In addition, BPHEC also exhibits temperature-stable performance, Curie temperature, oxidation resistance. maintains between 593 691 MHz from 50 150 °C. This work offers a new tunable strategy toward modulating genes for ultra-broadband megahertz

Язык: Английский

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