Hierarchical aggregation structure regulation and electromagnetic loss mechanism of cross-linked polyaniline in polymer wave absorbers

Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119848 - 119848

Published: Nov. 1, 2024

Language: Английский

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Zeolite imidazolate framework derived efficient absorbers: from morphology modulation to component regulation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177092 - 177092

Published: Oct. 16, 2024

Language: Английский

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Advantageous synergistic strategy to construct Ni@C/PC composites for efficient electromagnetic wave absorption

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120010 - 120010

Published: Jan. 1, 2025

Language: Английский

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Enhanced Electromagnetic Energy Conversion in an Entropy‐driven Dual‐magnetic System for Superior Electromagnetic Wave Absorption

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 29, 2024

Abstract Thermochemical conversion is a highly effective method for upgrading organic solid wastes into high‐value materials, contributing to carbon neutrality and peak, emission goals. It also serves as pathway develop energy‐efficient electromagnetic wave absorbing (EMWA) materials. In this study, fish skin successfully in situ nitrify Prussian Blue Fe 3 N under external thermal driving condition, resulting high saturation magnetization utilized. The N@C demonstrates outstanding EMWA property, achieving minimum reflection loss of −71.3 dB. Furthermore, by introducing cellulose nanofiber, portion the iron nitride transformed carbide, C/Fe N@C. This composite exhibits enhanced properties owing wider local charge redistribution stronger electronic interactions, an absorption bandwidth ( EAB ) 6.64 GHz. Electromagnetic simulations first‐principles calculations further elucidate mechanism, maximum reduction value radar‐cross section reached 37.34 dB·m 2 . design multilayer gradient metamaterials demonstrated ultra‐broadband 11.78 paper presents efficient strategy atomic‐level biomass waste utilization prepare N, provides novel insights between metal nitrides carbides, offers promising direction development advanced

Language: Английский

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B─C Bonding Configuration Manipulation Strategy Toward Synergistic Optimization of Polarization Loss and Conductive Loss for Highly Efficient Electromagnetic Wave Absorption

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Abstract In non‐metallic atom‐doped carbonaceous materials, the disparity in electronegativity between doped constituents and carbon atoms predetermines bonding topology of covalent bonds distribution electron density. This, consequently, influences polarization transport behavior within domain electromagnetic wave attenuation attributes material. However, influence formed by doping with weakly electronegative on density distribution, effects, remains uncharted. To address this deficiency, study fabricates a porous material (NCP) incorporates boron‐doped to form tunable B─C configurations (B‐NCP). By modulating configuration proportion, it is feasible achieve synergistic optimization conductive loss B‐NCP specimen. The optimized prototype ‐1200 sample displays exceptionally efficient absorption capabilities minimum reflection (RL min ) −52.03 dB an effective bandwidth (EAB) 5.36 GHz. This presents conscientious model for comprehending mechanisms associated atom carbon‐based wave‐absorbing materials.

Language: Английский

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Construction of NiCo2O4/NiCoO2 co-embedded porous bio-carbon with rich heterogeneous interfaces for excellent bacteriostatic microwave radiation protection

Carbon, Journal Year: 2024, Volume and Issue: 232, P. 119798 - 119798

Published: Nov. 4, 2024

Language: Английский

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Synergistic Enhancement of Defect-Induced Polarization and Built-In Electric Field Effect in Carbon Hybrids towards Efficient Electromagnetic Wave Absorption

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120037 - 120037

Published: Jan. 1, 2025

Language: Английский

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Synergistic Polarization Relaxation in Heteroatom‐Optimized Heterointerfaces for Electromagnetic Wave Absorption

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Abstract The regulation of heteroatoms and heterogeneous interface characteristics has emerged as a promising strategy to enhance electromagnetic wave (EMW) absorption. However, challenges remain in precisely controlling heteroatom doping fully understanding the synergistic mechanisms between interfaces. Here, novel is proposed for enhancing polarization relaxation through optimization. Carbon nanofiber (CNF)‐based Ni–Fe nanocubes decorated with N O are synthesized by pyrolyzing Fe‐based metal–organic frameworks under different atmospheres (NH 3 , H 2 /Ar, Ar). results show that N, play crucial role effect regulating electronic structure diverse structures. Finally, Fe N@Ni Fe/CNFs exhibit excellent EMW absorption at 2.3 mm, minimum reflection loss −56.75 dB, an effective bandwidth 6.7 GHz. Additionally, these materials display remarkable corrosion resistance due their unique fiber network structure. This study highlights optimizing effects, offering valuable insights design advanced heteroatom‐optimized heterointerfaces.

Language: Английский

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Review of recent advances in ferrite-based materials: From synthesis techniques to electromagnetic wave absorption performance

International Journal of Minerals Metallurgy and Materials, Journal Year: 2025, Volume and Issue: 32(3), P. 591 - 608

Published: Feb. 1, 2025

Language: Английский

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

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160354 - 160354

Published: Feb. 1, 2025

Language: Английский

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