Porifera‐Inspired Lightweight, Thin, Wrinkle‐Resistance, and Multifunctional MXene Foam

Advanced Materials, Год журнала: 2023, Номер 36(14)

Опубликована: Дек. 26, 2023

Abstract Transition metal carbides/nitrides (MXenes) demonstrate a massive potential in constructing lightweight, multifunctional wearable electromagnetic interference (EMI) shields for application various fields. Nevertheless, it remains challenging to develop facile, scalable approach prepare the MXene‐based macrostructures characterized by low density, thickness, high mechanical flexibility, and EMI SE at same time. Herein, ultrathin MXene/reduced graphene oxide (rGO)/Ag foams with porifera‐inspired hierarchically porous microstructure are prepared combining Zn 2+ diffusion induction hard template methods. The hierarchical porosity, which includes mesoporous skeleton microporous MXene network within skeleton, not only exerts regulatory effect on stress distribution during compression, making rubber‐like resistant wrinkling but also provides more channels multiple reflections of waves. Due interaction between Ag nanosheets, MXene/rGO, structure, is possible produce an outstanding shielding performance specific surface effectiveness reaching 109152.4 dB cm 2 g −1 . Furthermore, exhibit multifunctionalities, such as transverse Joule heating, longitudinal heat insulation, self‐cleaning, fire resistance, motion detection. These discoveries open up novel pathway development lightweight materials considerable anti‐interference devices.

Язык: Английский

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Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding

Advanced Functional Materials, Год журнала: 2023, Номер 33(50)

Опубликована: Авг. 6, 2023

Abstract MXene and graphene cryogels have demonstrated excellent electromagnetic interference (EMI) shielding effectiveness due to their exceptional electrical conductivity, low density, ability dissipate waves through numerous internal interfaces. However, synthesis demands costly reduction techniques and/or pre‐processing methods such as freeze‐casting achieve high EMI mechanical performance. Furthermore, limited research has been conducted on optimizing the cryogel microstructures porosity enhance while reducing materials consumption. Herein, a novel approach produce ultra‐lightweight composed of Ti 3 C 2 T x /graphene oxide (GO) displaying multiscale is presented enable high‐performance shielding. This method uses controllable templating interfacial assembly filamentous‐structured liquids that are readily converted into cryogels. The obtained ultra‐flyweight (3–7 mg cm −3 ) exhibit outstanding specific (33 000–50 000 dB g −1 eliminating need for chemical or thermal reduction. achieved when /GO used backbone conductive epoxy nanocomposites, yielding 31.7–51.4 at filler loading (0.3–0.7 wt%). Overall, one‐of‐a‐kind system introduced processed affording scalability

Язык: Английский

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Ti₃C₂T_x MXene- and Sulfuric Acid-Treated Double-Network Hydrogel with Ultralow Conductive Filler Content for Stretchable Electromagnetic Interference Shielding

ACS Nano, Год журнала: 2024, Номер 18(4), С. 2906 - 2916

Опубликована: Янв. 22, 2024

Hydrogels are emerging as stretchable electromagnetic interference (EMI) shielding materials because of their tissue-like mechanical properties and water-rich porous cellular structures. However, achieving high-performance hydrogel shields remains a challenge enhancing conductivity often results in compromise deformation adoptability. This work proposes treatment strategy involving sulfuric acid/titanium carbide MXene, which can simultaneously enhance the stretchability poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/poly(vinyl alcohol) (PVA) double-network hydrogels. Multiple spectroscopic characterizations reveal that acid promotes linear conformation transition PEDOT molecular chain, while MXene increases charge delocalization hydrogen bond cross-linking sites. The hydrogels, synthesized with combined content 0.6 wt % PEDOT:PSS, exhibit an average X-band EMI SE 41 dB. performance is sustained at 94.5%, even following stretching release strain 200%. Interestingly, found to linearly increase, reaching value 99 dB frequency increased 26.5 GHz. increase attributed enhanced water polarization process, supported by theoretical calculations impedance attenuation constant. introduces post-treatment technique optimizes providing deep insights into mechanism enabling ultralow conductive filler content.

Язык: Английский

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Advancements in Metal‐Organic, Enzymatic, and Nanocomposite Platforms for Wireless Sensors of the Next Generation

Advanced Functional Materials, Год журнала: 2024, Номер 34(45)

Опубликована: Июнь 12, 2024

Abstract Advanced wireless sensors, incorporating metal‐organic frameworks (MOFs), enzymatic systems, and nanocomposites, offer unparalleled solutions for monitoring analytes human physiological signals. These cutting‐edge when used with external devices, enable real‐time of physicochemical processes within the body, thereby enhancing understanding complex biological systems. This study presents advancements in sensor development, fabrication techniques, user‐friendly protocols. The performance these sensors is evaluated based on their selectivity, sensitivity, detection limits. Moreover, this article explores limitations, challenges, key strategies to enhance analyte recognition from onsite environmental species, ensuring point‐of‐care safety.

Язык: Английский

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Durable and sustainable CoFe2O4@MXene-silver nanowires/cellulose nanofibers composite films with controllable electric–magnetic gradient towards high-efficiency electromagnetic interference shielding and Joule heating capacity

Chemical Engineering Journal, Год журнала: 2024, Номер 485, С. 149691 - 149691

Опубликована: Фев. 17, 2024

Язык: Английский

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Lignocellulose‐Mediated Functionalization of Liquid Metals toward the Frontiers of Multifunctional Materials

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Lignocellulose-mediated liquid metal (LM) composites, as emerging functional materials, show tremendous potential for a variety of applications. The abundant hydroxyl, carboxyl, and other polar groups in lignocellulose facilitate the formation strong chemical bonds with LM surfaces, enhancing wettability adhesion improved interface compatibility. Beyond serving supportive matrix, can be tailored to optimize microstructure adapting them diverse This review comprehensively summarizes fundamental principles recent advancements lignocellulose-mediated highlighting advantages composite fabrication, including facile synthesis, versatile interactions, inherent functionalities. Key modulation strategies LMs innovative synthesis methods functionalized composites are discussed. Furthermore, roles structure-performance relationships these electromagnetic shielding, flexible sensors, energy storage devices systematically summarized. Finally, obstacles prospective pertaining thoroughly scrutinized deliberated upon. is expected provide basic guidance researchers boost popularity applications useful references design state-of-the-art LMs.

Язык: Английский

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Biomass-MOF composites in wastewater treatment, air purification, and electromagnetic radiation adsorption – A review

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 152932 - 152932

Опубликована: Июнь 7, 2024

Язык: Английский

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Multifunctional Wearable Conductive Nanofiber Membrane with Antibacterial and Breathable Ability for Superior Sensing, Electromagnetic Interference Shielding, and Thermal Management

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 2, 2024

Abstract With the rapid development of bioscience and technology, wearable electronic devices are developing toward advanced trends such as flexibility, convenience, multifunctionality, user‐friendliness. Herein, polystyrene‐block‐poly(ethylene‐co‐butylene)‐block‐polystyrene (SEBS) is employed for assisting strong binding silver nanoparticles (AgNPs) with polyimide nanofiber (PIF) to obtain durable PIAgS conductive membrane antibacterial hydrophobic ability. Owing porous fiber skeleton good interface adhesion, AgNPs can be homogeneously anchored onto surface construct stable perfect 3D network an ultrahigh conductivity up 2102.7 S/m, enabling multifunctionality resultant superior bioelectric signal (EMG/ECG) sensing, pressure sensing (S = 1.45 kPa −1 , 100 kPa) deep learning assisted gesture recognition, electromagnetic interference (EMI) shielding (18757.8 dB·cm 2 ·g ), electric heating (12.2 °C/V ) performances. Furthermore, a multifunctional device, antimicrobial ability breathability ensure its sufficient wearing safety comfort. Importantly, inherent weathering resistance PINF SEBS also endows it excellent stability broad service life. Taken together, designed possesses great application potential next‐generation device wide applicability.

Язык: Английский

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A Comprehensive Review of Electromagnetic Interference Shielding Composite Materials

Micromachines, Год журнала: 2024, Номер 15(2), С. 187 - 187

Опубликована: Янв. 26, 2024

The interaction between matter and microwaves assumes critical significance due to the ubiquity of wireless communication technology. selective shielding represents only way achieve control on crucial technological sectors. implementation microwave ensures proper functioning electronic devices. By preventing electromagnetic pollution, safeguards integrity optimal performances devices, contributing reliability efficiency systems in various sectors allowing further step forwards a safe secure society. Nevertheless, research is vast can be quite hard approach large number variety studies regarding both theory experiments. In this review, we focused our attention comprehensive discussion current state art materials used for production interference composites, with aim providing solid reference point explore field.

Язык: Английский

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Enhancing the Interaction of Carbon Nanotubes by Metal–Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Фев. 27, 2024

The remarkable properties of carbon nanotubes (CNTs) have led to promising applications in the field electromagnetic interference (EMI) shielding. However, for macroscopic CNT assemblies, such as film, achieving high electrical and mechanical remains challenging, which heavily depends on tube-tube interactions CNTs. Herein, we develop a novel strategy based metal-organic decomposition (MOD) fabricate flexible silver-carbon nanotube (Ag-CNT) film. Ag particles are introduced situ into film through annealing MOD, leading enhanced interactions. As result, conductivity Ag-CNT is up 6.82 × 10

Язык: Английский

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