Tailoring electromagnetic responsiveness of Tremella-like multi-dimensional heterostructures through a self-decomposition strategy

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157121 - 157121

Опубликована: Окт. 1, 2024

Язык: Английский

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Selective Ions Exchange Reactions Endow Defective Heterovalent Copper‐Based Selenides With Enhanced Dielectric Polarization Response

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract Defective heterovalent selenides provide a spacious arena for creating emergent electromagnetic (EM) phenomena that are unattainable in the conventional constituent counterparts. However, there still synthetic methodological challenges, and in‐depth understanding of EM properties, particularly correlation between tailored polarization sites dielectric response, significantly inadequate. Herein, selective ions exchange strategy driven by concentration‐regulated ( Case 1 ) time‐evoked 2 approaches, is innovatively proposed to design series defective copper‐based selenides. The controllable phase evolution mixed cation/anion responsible heterointerfaces levels ), while Cu + /Cu 2+ electronic configurations controlled cation accounted further manipulating heterointerfaces/defects enriching ). coupling nonstoichiometric 2−x Se‐containing heterointerfaces, unsaturated Se vacancies multi‐valence configurations, rather than themselves alone even at higher level, imparted abundant trigger boosted response Consequently, this designed selenide (ZnSe/CuSe/Cu 2‐x Se) deliveres broad bandwidth 6.89 GHz compare parent ZnSe without outperforming most reported metal until now. This innovative overcame bottlenecks methodology, providing paradigm fabricating sophisticated materials versatile applications beyond absorption.

Язык: Английский

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Ni Co -C/polyacrylamide hydrogels derived from mixed metal MOF-74 for synergistically enhanced electromagnetic wave absorption and thermal conduction performances

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159506 - 159506

Опубликована: Янв. 1, 2025

Язык: Английский

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Hierarchical CNTs/PyC/SiBCN Foam with Tunable Microwave Absorption Properties Conspired by Melamine-derived Pyrolyzed Carbon and Carbon Nanotubes

Carbon, Год журнала: 2025, Номер unknown, С. 120030 - 120030

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced Microwave Absorption of Multi‐Interface Core–Shell FeSiAl@MnO_x@C Composites by Morphology Engineering

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Abstract The rational manipulation of interfacial properties, composition, and morphology materials has emerged as an effective strategy for enhancing their microwave absorption performance. crystal phase microstructure, electromagnetic properties can be regulated by varying the thermal treatment temperature. synergistic integration heterogeneous interfaces, magnetic materials, microstructures, defect engineering helps optimize impedance matching enhance polarization losses. Herein, multi‐interface core–shell FeSiAl@MnO x @C composites with various morphologies demonstrated superior A minimum reflection loss −56.3 dB is achieved at absorber thickness 1.41 mm, bandwidth 5.0 GHz obtained a 1.59 mm. radar cross‐section reduction value reached 19.448 incidence angle 0°. excellent performance due to effect significant dielectric losses improved matching. This study establishes foundation designing next‐generation high‐performance microwave‐absorbing high

Язык: Английский

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Ultra‐Bandwidth Microwave Absorption and Low Angle Sensitivity in Dual‐Network Aerogels with Dual‐Scale Pores

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Aerogels with porous structures offer an attractive approach to modulating electromagnetic parameters and enhancing wave (EMW) absorption performance. However, conventional aerogels are limited by their single-scale pore size fixed orientation, which constrain EMW capabilities. This study introduces dual-scale pores dual-network structure constructed via constant-temperature freezing secondary-infusion method. Multiscale both micrometer- submillimeter-scale when the Ti3C2Tx MXene thermoplastic polyurethane solution is frozen dried at a specific temperature, leading ultra-wide effective bandwidth (EAB) reaching 10.41 GHz in vertical direction. Furthermore, address poor parallel direction, secondary infusion method applied form aerogel structure, forms reflective interfaces perpendicular incident various directions. adjustment enhances EAB direction from 1.58 5.93 GHz, marking 275.32% enhancement, while reaches 8.08 GHz. design strategy overcomes limitations of structural scale arrangement enriching attenuation mechanisms absorber, effectively reducing sensitivity incoming EMW, offering new insights for designing efficient absorbers.

Язык: Английский

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The “two birds with one stone” strategy enhances the high corrosion resistance and electromagnetic wave absorption of NiSe2/NC/MXene composites

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162621 - 162621

Опубликована: Фев. 1, 2025

Язык: Английский

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Construction of ZnFe2O4/C/CG composites with low-frequency and broadband electromagnetic wave absorption

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Nitrogen-doped eugenol-group polymer carbon microspheres with high-performance microwave (2-18 GHz) absorption

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 112061 - 112061

Опубликована: Фев. 1, 2025

Язык: Английский

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High-Performance Microwave Absorber by Boron Carbon Nitride

Surfaces and Interfaces, Год журнала: 2025, Номер 66, С. 106549 - 106549

Опубликована: Апрель 23, 2025

Язык: Английский

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