Asymmetric Structural MXene/PBO Aerogels for High‐Performance Electromagnetic Interference Shielding with Ultra‐Low Reflection

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 4, 2024

Abstract Electromagnetic interference (EMI) shielding materials with low electromagnetic (EM) waves reflection characteristics are ideal for blocking EM radiation and pollution. Materials reflectivity must be constructed using excellent absorption properties. However, simultaneously possessing both EMI performance remain scarce, consequently, multilayer structures need to developed. Poly(p‐phenylene–2,6–benzobisoxazole) nanofibers (PNF) prepared by deprotonation. PNF combined MXene heterostructure MXene@Ni in‐situ growth; MXene@Ni/PNF acts as an layer while MXene/PNF reflective layer. Finally, (MXene@Ni/PNF)–(MXene/PNF) aerogels layer‐by‐layer freeze‐drying based on the layered modular design concept. Experimental characterizations revealed that enable efficient absorption‐reflection‐reabsorption of waves, effectively eliminating EMI. When mass ratio Ni in is 1:6 fraction 80 wt.%, exhibit (71 dB) a very coefficient (R = 0.10). Finite element simulations verified developed asymmetric structural achieve high characteristics. In addition, display infrared camouflage ability.

Язык: Английский

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MoS2 Lubricate-Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Окт. 11, 2024

Abstract The design and fabrication of high toughness electromagnetic interference (EMI) shielding composite films with diminished reflection are an imperative task to solve pollution problem. Ternary MXene/ANF (aramid nanofibers)–MoS 2 nacre-like layered structure here fabricated after the introduction MoS into binary system. fulfills impressive “kill three birds one stone” improvement effect: lubrication toughening mechanical performance, reduction in secondary wave, performance photothermal conversion. After (mass ratio 50:50), strain failure tensile strength increase from 22.1 $$\pm$$ ± 1.7% 105.7 6.4 MPa 25.8 0.7% 167.3 9.1 MPa, respectively. elevates 13.0 4.1 26.3 0.8 MJ m −3 (~ 102.3%) simultaneously. And effectiveness (SE R ) 50:50) decreases ~ 10.8%. EMI (EMI SE) 41.0 dB (8.2–12.4 GHz); 60:40), increases 18.3 1.9% 28.1 53.5%), SE 22.2%, corresponding is 43.9 dB. also leads a more efficient conversion 45 55 °C). Additionally, MXene/ANF–MoS exhibit excellent electric heating quick temperature elevation (15 s), cycle stability (2, 2.5, 3 V), long-term (2520 s). Combining MXene content, ternary could be applied many industrial areas. This work broadens how achieve balance between properties versatility composites case high-function fillers.

Язык: Английский

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Integration of MXene and polymer: Unlocking the full potential of multifunctional composites for electromagnetic interference shielding

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

Опубликована: Дек. 1, 2024

Язык: Английский

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Electromagnetic Interference Shielding Films: Structure Design and Prospects

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Окт. 10, 2024

The popularity of portable and wearable flexible electronic devices, coupled with the rapid advancements in military field, requires electromagnetic interference (EMI) shielding materials lightweight, thin, characteristics, which are incomparable for traditional EMI materials. film can fulfill above requirements, making them among most promising next-generation devices. Meticulously controlling structure composite while optimizing parameters constructed components effectively dissipate transform wave energy. Herein, review systematically outlines high-performance films through structural design strategies, including homogeneous structure, layered porous structure. attenuation mechanism evaluation (Schelkunoff theory calculation theory) performance introduced detail. Moreover, effect attributes properties on is analyzed, summarizing criteria elucidating relevant mechanism. Finally, future challenges potential application prospects prospected. This provides crucial guidance construction advanced tailored highly customized personalized devices future.

Язык: Английский

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Antioxidant MXene/TA/Nanocellulose Hybrid Ink for Screen Printing of Multifunctional Smart Textiles with Enhanced Antibacterial Performance

Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

With the rapid advancement of electronic technology, demand for wearable and portable devices has significantly increased. MXene-based multifunctional textiles have attracted extensive attention from researchers due to their unique various functionalities, while poor oxidation structure stability limit applications. In this study, a novel MXene/tannic acid-modified cellulose nanofibers (TACNF)-based textile was prepared by screen-printing post treatment. The abundant phenolic hydroxyl groups in TA effectively protect MXene nanosheets oxidation. subsequent ZnCl2 cross-linking treatment leads metal coordination between Zn ions molecules, which further improves composite coating endows functional with enhanced antimicrobial activity against Escherichia coli Staphylococcus aureus. rationally designed electrically conductive demonstrates decent sensing ability toward tiny large human motions, its exceptional photo-/electro-thermal conversion also enables promising potential applications thermal therapy heat sterilization. This study provides new insights design fabrication smart healthcare textiles.

Язык: Английский

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An Electric‐Magnetic Dual‐Gradient Composite Film Comprising MXene, Hollow Fe₃O₄, and Bacterial Cellulose for High‐Performance EMI Shielding and Infrared Camouflage

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract It is crucial to develop electromagnetic interference (EMI) shielding materials with high efficiency (SE) and reduced reflection mitigate the secondary pollution caused by waves (EMWs). Herein, a novel multilayer assembly strategy inspired structure of “Turkish dessert—Baklava” proposed introduce magnetic hollow Fe 3 O 4 nanospheres (HFO) conductive MXene nanosheets into bacterial cellulose (BC) network. Through layer‐by‐layer vacuum filtration approach, composite BC/MXene/HFO film controllable electric‐magnetic dual‐gradient achieved. The construction dual gradients alleviates impedance mismatch at air‐film interface, resulting in reflectivity toward EMWs, while unique HFO facilitates “absorption–reflection–reabsorption” process EMWs. Consequently, as‐prepared (0.35 mm thickness) exhibits an extraordinary EMI SE 67.6 dB as low 5.1 dB. Furthermore, it also demonstrates exceptional mechanical properties, efficient thermal management, Joule heating capabilities, well remarkable passive active infrared camouflage performances. This study offers innovative approach achieve less more absorption expands application scope precision electronics, aerospace, military equipment fields.

Язык: Английский

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Molten salt-modified Mo-MXene coupled with CoFe-LDH heterostructure for stable oxygen evolution reaction

Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101835 - 101835

Опубликована: Фев. 1, 2025

Язык: Английский

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The Single Atom Anchoring Strategy: Rational Design of MXene‐Based Single‐Atom Catalysts for Electrocatalysis

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Single‐atom catalysts (SACs) are a class of with low dosage, cost, and the presence metal atom‐carrier interactions high catalytic activity, which considered to possess significant potential in field electrocatalysis. The most important aspect synthesis SACs is selection suitable carriers. Metal carbides, nitrides, or carbon‐nitrides (MXenes) widely used as new type 2D materials good electrical conductivity tunable surface properties. abundance functional groups vacancy defects on MXenes an ideal anchoring site for single atoms therefore regarded carrier single‐atom loading. In this work, preparation method MXenes, loading mode SACs, characterization catalysts, electrochemical performance described detail, some hot issues current research future directions also summarized. aim work promote development MXene‐based within realm With ongoing innovation, these expected be crucial energy conversion storage solutions.

Язык: Английский

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Recent Advances in MXene‐Based Aerogels for Electromagnetic Wave Absorption

Small, Год журнала: 2024, Номер 20(49)

Опубликована: Окт. 18, 2024

Abstract Developing lightweight, high‐performance electromagnetic wave (EMW) absorbing materials those can absorb the adverse radiation or waves are of great significance. Transition metal carbides and/or nitrides (MXenes) a novel type 2D nanosheets associated with large aspect ratio, abundant polar functional groups, adjustable conductivity, and remarkable mechanical properties. This contributes to high‐efficiency assembly MXene‐based aerogels possessing ultra‐low density, specific surface area, tunable unique 3D porous microstructure, which is beneficial for promoting EMW absorption. Therefore, absorption have attracted widespread attention. review provides an overview research progress on absorption, focusing recent advances in component structure design strategies, summarizes main strategies constructing aerogels. In addition, based mechanisms regulation preparation methods properties varieties components pore structures detailed advance understanding relationships composition‐structure‐performance. Furthermore, future development challenges faced by summarized prospected.

Язык: Английский

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Hetero-interfaces strategy based on Fe3O4 microspheres to construct multi-band tunable and anticorrosive absorbers

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

Опубликована: Янв. 1, 2025

Язык: Английский

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