Ultrathin Microwave Absorbing Structures at the K‐Band From PDA‐Implanted CNTs, Doped Conjugated Carbon Using Peganum Harmala Seeds and Turpentine Derivatives

Advanced Sustainable Systems, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract In this study, a sustainable biomass‐derived structure from Harmal seed peganum (HSP) is used as substrate to facilitate the growth of carbon nanotubes (CNTs) by Ni catalyst. The unique toutia‐like morphology implanted coated with polydopamine (PDA) via an in situ polymerization process. Persian turpentine (PT) chosen novel, green, sustainable, practical, and polarizable medium, selected capable microwave absorbing medium. influence interfacial interaction on performance carefully dissected addition polyvinyl alcohol (PVA). With ultrathin thickness 200 µm, CNT‐implanted sample PDA enhanced PT (HSP/Ni‐CNT/PDA/PT) achieved maximum RL −79.88 dB at 18.22 GHz efficient bandwidth 7.17 GHz. Interestingly architected totally shields ≥95% k‐band frequencies. promoted impedance matching other effective mechanisms HSP/Ni‐CNT/PDA/PVA/PT HSP/Ni‐CNT/PDA/polyethylene (PE) nanocomposites lead highest −92.87 25.39 0.90 mm broadest wide 8.50 1.20 mm, respectively.

Язык: Английский

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Multifunctional Janus-Structured Polytetrafluoroethylene-Carbon Nanotube-Fe3O4/MXene Membranes for Enhanced EMI Shielding and Thermal Management

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

Опубликована: Фев. 6, 2025

Abstract Herein, a novel Janus-structured multifunctional membrane with integrated electromagnetic interference (EMI) shielding and personalized thermal management is fabricated using shear-induced in situ fibrillation vacuum-assisted filtration. Interestingly, within the polytetrafluoroethylene (PTFE)-carbon nanotube (CNT)-Fe 3 O 4 layer (FCFe), CNT nanofibers interweave PTFE fibers to form stable “silk-like” structure that effectively captures Fe particles. By incorporating highly conductive MXene layer, FCFe/MXene (FCFe/M) exhibits excellent electrical/thermal conductivity, mechanical properties, flame retardancy. Impressively, benefiting from rational regulation of component proportions design Janus structure, FCFe/M thickness only 84.9 µm delivers outstanding EMI effectiveness 44.56 dB X-band, normalized specific SE reaching 10,421.3 cm 2 g −1 , which attributed “absorption-reflection-reabsorption” mechanism. Furthermore, demonstrates low-voltage-driven Joule heating fast-response photothermal performance. Under stimulation V voltage an optical power density 320 mW −2 surface temperatures membranes can reach up 140.4 145.7 °C, respectively. In brief, anti-electromagnetic radiation temperature attractive candidate for next generation wearable electronics, compatibility, visual heating, thermotherapy, military aerospace applications.

Язык: Английский

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Anisotropic MXene/Waterborne Polyurethane/Polypyrrole ternary composite aerogels for enhanced electromagnetic interference shielding and multifunctional applications

Composites Communications, Год журнала: 2025, Номер 55, С. 102294 - 102294

Опубликована: Фев. 7, 2025

Язык: Английский

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Graphene/SiO2-Reinforced Epoxy Composite with Calcium Cross-Linking for Enhanced Thermal Conductivity, EMI Shielding, and Electrical Insulation

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Hetero-structured construction of RGO nanosheets decorated by flower-like MoS2 toward the regulation of electromagnetic wave absorption performance

Materials Today Physics, Год журнала: 2024, Номер unknown, С. 101631 - 101631

Опубликована: Дек. 1, 2024

Язык: Английский

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High mass loading of sulfonated holey graphene/PANI in−situ growing on carbon cloth for superior areal capacitance of flexible supercapacitor

Materials Today Chemistry, Год журнала: 2025, Номер 43, С. 102514 - 102514

Опубликована: Янв. 1, 2025

Язык: Английский

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Exceptional electrochemical properties of coconut shell carbon-phenolic resin composite for supercapacitors

Journal of Energy Storage, Год журнала: 2025, Номер 113, С. 115731 - 115731

Опубликована: Фев. 8, 2025

Язык: Английский

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Green, ultrafast migration of lignin for flexible composite films with impressive UV shielding performance and mechanical flexibility

Composites Part B Engineering, Год журнала: 2025, Номер unknown, С. 112278 - 112278

Опубликована: Фев. 1, 2025

Язык: Английский

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Petaloid magnetic bimetallic CoNi/CNTs carbides self-assembled with MXene for exceptional electromagnetic wave absorption performance

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179368 - 179368

Опубликована: Фев. 1, 2025

Язык: Английский

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Polyethylenimine-grafted cellulose nanofibril composites: Adsorbents for anionic dye removal with thermodynamic insights

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 143354 - 143354

Опубликована: Апрель 1, 2025

Язык: Английский

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