Yolk–Shell CoNi@N-Doped Carbon-CoNi@CNTs for Enhanced Microwave Absorption, Photothermal, Anti-Corrosion, and Antimicrobial Properties

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

Опубликована: Фев. 26, 2025

Abstract The previous studies mainly focused on improving microwave absorbing (MA) performances of MA materials. Even so, these designed materials were very difficult to be employed in complex and changing environments owing their single-functionalities. Herein, a combined Prussian blue analogues derived catalytical chemical vapor deposition strategy was proposed produce hierarchical cubic sea urchin-like yolk–shell CoNi@N-doped carbon (NC)-CoNi@carbon nanotubes (CNTs) mixed-dimensional multicomponent nanocomposites (MCNCs), which composed zero-dimensional CoNi nanoparticles, three-dimensional NC nanocubes one-dimensional CNTs. Because good impedance matching attenuation characteristics, the CoNi@NC-CoNi@CNTs MCNCs exhibited excellent performances, achieved minimum reflection loss ( RL min ) −71.70 dB at 2.78 mm Radar Cross section value −53.23 m 2 . More importantly, acquired results demonstrated that presented photothermal, antimicrobial anti-corrosion properties structure, highlighting potential multifunctional applications. It could seen this finding not only generalizable route magnetic NC-CNTs-based MCNCs, but also provided an effective develop improve environmental adaptabilities.

Язык: Английский

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Exploring the synergistic role of graphite and binary metal sulfides in achieving superior electromagnetic wave absorption

Composites Part A Applied Science and Manufacturing, Год журнала: 2025, Номер unknown, С. 108751 - 108751

Опубликована: Янв. 1, 2025

Язык: Английский

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Multiscale Design of Dielectric Composites for Enhanced Microwave Absorption Performance at Elevated Temperatures

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Abstract Aerospace vehicles and electronic devices are often operated in elevated temperature environments, which has led to an increased demand for high‐temperature microwave absorbing materials (MAMs). The absorption properties of MAMs influenced not only by the intrinsic material characteristics but also micro‐, meso‐, macro‐structural configurations composites. This paper reviews recent advancements through a multiscale design approach. Due sensitivity permittivity, tend exhibit reflection behavior at temperatures. Strategies aimed regulating conductivity polarization can enhance impedance matching under these conditions; however, this results unavoidable reduction loss capability. In contrast traditional methodologies, constructed from subwavelength‐scale functional units achieve remarkable anti‐reflection effects discrete unit distribution, thereby significantly optimizing both dielectric capacity matching. Furthermore, equivalent electromagnetic parameters metacomposites intrinsically linked their physical structural attributes. relationship offers novel strategy enhancing performance. It is anticipated that review will provide insightful guidance future explorations into innovative highly efficient MAMs.

Язык: Английский

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Constructing Schottky contacts via vertical growth of SnS2 nanosheets on hollow microspheres for efficient microwave absorption

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Controllable Construction of Hollow Ni/NiO@PPy Particles for Broadband and Highly Efficient Microwave Absorption

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Microwave‐absorbing materials are widely used in electromagnetic protection and military stealth fields. Hollow structure materials, as efficient microwave absorbing have garnered considerable attention, since they beneficial to multiple reflection enhance the attenuation loss of microwaves. Herein, a strategy is proposed prepare hollow Ni/NiO@PPy particles using water‐soluble template method combined with situ polymerization process. The cuboid constructed Na 2 SO 4 templates then filled into epoxy resin form composite films excellent absorption properties. film under optimal conditions exhibits minimum value −72.14 dB rate more than 99.99% filling content 10 wt.%. By adjusting thickness, an effective bandwidth 15.94 GHz can be achieved, which almost completely covers S, C, X, Ku bands. CST simulation results confirm outstanding radar cross‐section film. Remarkably, ultra‐low 2.5 wt.%, still achieves 99.90%, demonstrating highly content.

Язык: Английский

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Branch-Leaf ZrO2@SiC@WS2 fibers as outstanding microwave absorber with high-temperature tolerance

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160488 - 160488

Опубликована: Фев. 1, 2025

Язык: Английский

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Development of silicon carbide (SiC)-based composites as microwave-absorbing materials (MAMs): A review

Journal of the European Ceramic Society, Год журнала: 2024, Номер 44(13), С. 7411 - 7431

Опубликована: Май 18, 2024

Язык: Английский

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Multi-interface spatial star-like MoC/Co/C composites toward enhanced electromagnetic wave absorption properties

Carbon, Год журнала: 2024, Номер 228, С. 119390 - 119390

Опубликована: Июнь 24, 2024

Язык: Английский

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Hollow engineering of Co/N-doped C@carbon aerogel with hierarchical structure boosting interfacial polarization for ultra-thin microwave absorption and thermal insulation

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153561 - 153561

Опубликована: Июнь 27, 2024

Язык: Английский

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Fabrication of Micro‐Mesopores on Spiral Carbon Nanocoils and Simultaneous Doping with Oxygen to Expand Microwave Absorption Bandwidth

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 6, 2024

Abstract The exceptional benefits of structural defects and doped atoms in carbon network regarding electromagnetic properties inspire the design advanced carbon‐based microwave absorption (MA) materials. However, excessive decline physical materials, especially their conductivity. Therefore, it is a great challenge to balance optimize conductive behavior for MA spiral nanocoil (CNC), with coexisting amorphous polycrystalline structures moderate conductivity, has significant but lacks pores atoms. Herein, parts relatively weak C─C bond energies are preferentially oxidized at 500 °C air atmosphere create combine O bodies CNCs. Furthermore, mechanism prioritizing formation doping over discovered. Benefiting from synergistic interplay dopants, O‐enriched porous CNCs demonstrate enhanced conduction polarization losses than pure CNCs, realizing wide effective bandwidth 7.3 GHz filling ratio only 3 wt.%. Theoretical calculations further support these experimental results. combination may serve as an pathway unlocking tunable dielectric

Язык: Английский

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