Mechanistic Insights into the Structural Evolution of ZIF‐67 via Electrospinning Strategy Toward High Electromagnetic Wave Absorption Performance of ZIF‐67‐Derived Carbon Nanofibers DOI Creative Commons
Xinhui Cao, Xinyi Wu, Xue Wang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract Metal‐organic framework (MOF)‐derived architectures are regarded as an effective electromagnetic wave (EMW)‐absorbing materials owing to their adjustable compositions and microstructures. The combination of MOFs with carbon nanofibers (CNFs) is a practical method increase the EMW absorption ability. In this work, cobalt‐based zeolitic imidazolate framework‐67 (ZIF‐67) serves self‐sacrificing precursor fabricate Co‐carbon nanofiber (Co‐CNF) composites via in situ electrospinning strategy. Comparative studies on ex situ, strategies for conducted. A unique structural evolution mechanism from ZIF‐67 Co nanoparticles explored. Numerous small evenly distributed surface synthesized Co‐CNF (in‐Co‐CNF) resulting collapse framework, whereas remains (ex‐Co‐CNF), encapsulating large nanoparticles. lower reflection loss ( RL ) −48.6 dB at 6.8 GHz 3.5 mm achieved in‐Co‐CNF because improved conduction, polarization, magnetic losses, ex‐Co‐CNF only exhibits −18.3 9.3 same thickness. radar cross‐section (RCS) simulation Tesla wireless transmission experiment conducted validate real applications.

Language: Английский

Recent progress in carbon-based materials and loss mechanisms for electromagnetic wave absorption DOI

Xuhui Xiong,

Huibin Zhang, Hualiang Lv

et al.

Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118834 - 118834

Published: Jan. 18, 2024

Language: Английский

Citations

90
A Stretchable Electromagnetic Interference Shielding Fabric with Dual‐Mode Passive Personal Thermal Management DOI
Jingwen Dong, Yuezhan Feng,

Kang Lin

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(13)

Published: Dec. 15, 2023

Abstract Electromagnetic interference (EMI) shielding fabrics are crucial in addressing the increasingly serious electromagnetic pollution. To meet wearable requirements, stretchability and thermal comfortability often desired, but which still challenging. Herein, a stretchable EMI fabric is fabricated via electrospinning coupled with biaxial pre‐stretching spraying, block stacking wrinkled silver nanowire (AgNW)/Ti 3 C 2 T x MXene network coated on one side of electrospun thermoplastic polyurethane (TPU)/polydimethylsiloxane (PDMS) fabric. As expected, structure protects conductive from fracture during stretching process, so as to realize strain‐invariant electrical conductivity. Thus, exhibits performance over 40 dB when subjected 10–50% uniaxial strains or 21–125% strains. More importantly, white TPU/PDMS black AgNW/MXene enable passive radiative cooling heating, respectively. The high mid‐infrared emissivity (97.5%) solar reflectance (90%), thus reducing skin temperature by ≈4.9 °C. heating absorptivity (86.6%) photothermal effect increased ≈5 Therefore, fabirc Janus‐type dual‐mode personal management promising future products.

Language: Английский

Citations

78
Recent advances on outstanding microwave absorption and electromagnetic interference shielding nanocomposites of ZnO semiconductor DOI
Raghvendra Singh Yadav, Ivo Kuřitka

Advances in Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 326, P. 103137 - 103137

Published: March 21, 2024

Language: Английский

Citations

26
Ant‐Nest‐Inspired Biomimetic Composite for Self‐Cleaning, Heat‐Insulating, and Highly Efficient Electromagnetic Wave Absorption DOI
Ahmed Elhassan, Jialu Li, Ibrahim Abdalla

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 28, 2024

Abstract The pursuit of eco‐friendly electromagnetic wave absorption (EMWA) materials with multifunctional capabilities has garnered significant attention in practical applications. However, achieving these desired qualities simultaneously poses a challenge. This study introduces single‐step calcination and chemical polymerization process to obtain an environmentally friendly ant‐nest‐inspired hybrid composite by optimizing conductive polypyrrole nanotubes (PNTs) within 3D carbonaceous structure. biomimetic forms highly efficient network, providing pathway for free electrons the barriers enhancing conduction loss. Remarkably, EMWA performance achieves ultrathin (1.6 mm), wide effective band (5.4 GHz), strong intensity (−67.6 dB) features. Moreover, due complex intertwined continuous obtained samples exhibit excellent thermal insulation superhydrophobic behavior inhibiting heat transfer preventing localized areas from being prone water absorption. These findings not only offer sustainable low‐cost production route composites but also demonstrate high‐efficiency absorber great multifunctionality as green alternative traditional materials.

Language: Английский

Citations

21
Gradient Porous and Carbon Black‐Integrated Cellulose Acetate Aerogel for Scalable Radiative Cooling DOI Open Access
Soo‐Jin Park, Jungkyu Choi, Jeong-Woo Lee

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Passive temperature controls like passive daytime radiative cooling (PDRC)‐heating (PDRH), and thermal insulation are essential to meet the growing demand for energy‐efficient solutions. When combined with advanced functions electromagnetic interference shielding, these technologies can significantly enhance scalability. However, existing approaches using single thin films or uniform porous materials face inherent limitations in optimizing versatile functions, while lightweight, insulating aerogels extend their multifunctionality by manipulating pores fillers. Herein, carbon black (CB)‐containing cellulose acetate (CA)aerogels (CB/CA aerogel) featuring gradient bilayer structures devised implement switchable PDRC‐PDRH broadband spectral emissivity from infrared microwave, along high elasticity. Using stirring freeze‐drying methods, CA show low conductivity (≈0.034 W mK −1 ) demonstrate broad‐spectrum functionality, over 95.7% solar reflectivity 93% long‐wavelength (LWIR) emittance, achieving a 12.25 °C reduction outdoor conditions. Furthermore, CB/CA LWIR emittance 98.7% provide 39.4% microwave absorption. This study offers viable solution simultaneously control absorption across broad spectrum media.

Language: Английский

Citations

2
Porous SiCNnw/C/Si3N4 ceramics with controlled component and structure for electromagnetic wave absorption DOI
Jialin Bai, Zhipeng Xie, Pengfei Zhang

et al.

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112164 - 112164

Published: Jan. 1, 2025

Language: Английский

Citations

2
Impact of Defect‐Rich Carbon Nanofibers Combined with Magnetic Materials on Broadband Electromagnetic Wave Absorption and Radar Cross‐Section Reduction DOI Creative Commons
Ibrahim Abdalla, Ahmed Elhassan,

Salma Ali

et al.

Small Structures, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

Carbon nanofibers (CNFs) exhibit inherent dielectric properties that enhance electromagnetic (EM) wave absorption, yet challenges exist in expanding their effective absorption bandwidth (EAB) and improving flexibility. Many studies fail to adequately consider how structural factors influence performance when combining CNFs with magnetic materials. To address these issues, a 1D carbon nanocomposite is developed by embedding oxide nanoparticles within using simple electrospinning technique. This approach improves membrane flexibility disrupting rigid alignment introducing dynamic interactions, while also creating defect‐rich interfaces increase the amorphous content (61%) of CNFsF composite, leading improved EM absorption. The unique macro/mesoporous morphology provides internal heterogeneous boundaries effectively trap dissipate waves. As result, flexible CNF composites demonstrate significant performance, achieving minimum reflection loss (RL min ) −39.8 dB at 4.64 GHz an abroad EAB up 7 only 2.5 mm thickness. Computer simulation technology (CST) simulations indicate maximum radar cross‐section reduction 21.1 m 2 , highlighting material's stealth capability. research advances development high‐performance materials offers new strategies for enhancing through composite engineering.

Language: Английский

Citations

2
Graphite Wrapped FeNi3/Co with Carbon Nanotubes Anchored on MgO@Carbon Fiber Reinforcements via Continuous Fabrication for High-Efficiency Microwave Attenuation DOI
Chengjuan Wang, Haotian Jiang,

Xianzhao Cao

et al.

Advanced Fiber Materials, Journal Year: 2024, Volume and Issue: 6(5), P. 1640 - 1656

Published: June 21, 2024

Language: Английский

Citations

13
Electric-magnetic dual-gradient structure design of thin MXene/Fe3O4 films for absorption-dominated electromagnetic interference shielding DOI
Hongwei Zhang,

Jiazhe Cheng,

Kaiyu Liu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 950 - 958

Published: Aug. 27, 2024

Language: Английский

Citations

12
A comprehensive review on surface modifications of polymer‐based 3D‐printed structures: Metal coating prospects and challenges DOI

Khagendra Gautam,

Debashish Gogoi,

Tanyu Donarld Kongnyui

et al.

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(4)

Published: April 1, 2024

Abstract The production of complex structures out a variety materials has undergone revolution due to the rapid development additive manufacturing (AM) technology. Initially confined applications such as magnetic actuators and two‐dimensional electric or electronic circuits, convergence 3D printing metallization methods emerged revolutionary approach. This synergy facilitates creation functional customizable metal‐polymer hybrid characterized by high strength, lightweight properties, intricate geometric designs, superior surface finish. These also exhibit enhanced electrical thermal conductivity, well optical reflectivity. paper reviews techniques improve effectiveness 3D‐printed polymer antennas using various metallization. processes are examined, classification based on employed is presented facilitate comparisons that highlight optimal utilization for fabrication structures. main emphasis here different in terms deposition, bonding characteristics metallic coatings developed polymers. review contributes an in‐depth analysis latest developments specifically applied exploration extends potential applications, challenges encountered, future prospects within this dynamic field. As AM continue evolve, study aims provide comprehensive understanding state‐of‐the‐art methodologies their implications polymer‐based antennas.

Language: Английский

Citations

11