Carbon, Journal Year: 2024, Volume and Issue: 232, P. 119825 - 119825
Published: Nov. 13, 2024
Language: Английский
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 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.
Language: Английский
Citations
7
Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120272 - 120272
Published: March 1, 2025
Language: Английский
Citations
4
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 12, 2024
Abstract Multifunctional electromagnetic wave (EMW) absorbing materials are attracting attention because of their potential applications in medical, livelihood, and military. In this study, a pomegranate‐like nanolayer featuring core‐shell architecture (PNCS) is prepared using confinement strategy. Introducing metal atoms into unique design (M‐PNCS, M = Mn, Fe, Co, Ni, Cu) effectively tuned the response improved functions. The Mn‐PNCS composite exhibited highest absorption. Its reflection loss ( RL ) reached −62.39 dB with an effective absorption bandwidth (EAB) at 1.8 mm 6.0 GHz. As charge transport capacity increases, its can be transformed shielding, green shielding index up to 3.54. On basis, used fabricate multifunctional film new strain sensor. This integrated absorption, thermal insulation, hydrophobicity, flexibility, sensing, thus showing for use wearable protective clothing. addition, sensors simulation achieved sensing through coupling effect between patterns. These findings demonstrate that excellent material technical fields EMW devices.
Language: Английский
Citations
12
Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 9, 2025
Precise construction of rational structures and optimization material components are the main strategies for design preparation novel high-performance electromagnetic wave (EMW) absorbers. Here, SiO2/RF@m-PDA multishell composite microspheres with an ordered mesoporous structure produced by a two-step reaction simultaneous hydrolysis precipitation polymerization dopamine self-polymerization soft stencil method. The monodisperse average particle size 380 nm. Then magnetic Co nanoparticles embedded inside pores using impregnation reduction method, which allows SiO2/C/NC-Co EMW absorbers different component loadings. effective absorption bandwidth SiO2/C/NC-Co-2 reaches 7.36 GHz at thickness 2.2 mm, minimum reflection loss −46.59 dB adjusting filling load absorber. excellent absorbing performance is attributed to dual mechanism synergistic effect magnetic/dielectric abundant heterogeneous interfaces given layer structure. This study provides feasible method prepare complex multicomponent doped
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159506 - 159506
Published: Jan. 1, 2025
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 13, 2025
Abstract The dielectric and magnetic coexistence behavior of high entropy oxides (HEOs) injects infinite dynamism in promoting electromagnetic wave (EMW) absorption, but precisely constructing their regular geometries at the nanoscale remains challenging. Herein, controlled preparation reduced graphite oxide loaded (CoFeNiCuMn)O with various by a rapid plasma process is reported. Modifying only metal content precursor can effectively influence morphology properties resulting derivatives, achieving well‐matched impedance ensuring outstanding absorption performance. results show that truncated octahedral HEO/RGO composite exhibits strongest absorbing capacity, minimum reflection loss −57 dB 14.1 GHz corresponding effective bandwidth covering 4.13 GHz. Moreover, constitutive relationship between multi‐element synergies microwave characteristics systematically explored, mechanism proposed. Delayed wireless charging time simulated values RCS less than −10 dBm 2 whole detection angles further demonstrate its dissipation capability practical application scenarios. This study not enriches variety lightweight efficient materials also guides for new configuration design HEOs.
Language: Английский
Citations
1
Ceramics International, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
1
Carbon, Journal Year: 2024, Volume and Issue: 230, P. 119592 - 119592
Published: Aug. 31, 2024
Language: Английский
Citations
4
Published: Jan. 1, 2025
For adapting to the complex electromagnetic environment, developing materials with tunable morphology enabling broadband wave (EMW) absorption is undoubtedly a challenging task. In this work, Y2O3/Ni@ N-doped carbon (YNC) composites were prepared by solvothermal method and high-temperature carbonization using metal-organic frameworks (MOFs) as raw materials. By adjusting molar ratio of Y3+/Ni2+, changed from microsphere spiky microspheres, then dumbbell-shape, different morphologies achieved tune impedance matching. Especially, microspheres exhibited stronger EMW performance than other morphologies. When Y3+/Ni2+ was 3:7, minimum reflection loss YNC reached −64.74 dB at 25 wt% filling ratio. At thickness 2.02 mm, effective bandwidth value 6.56 GHz (11.44−18.00 GHz), covering entire Ku band. Notably, controllable matching porous structure in multiple bands (C, X, Ku). The superior attributed composites, achieving balance attenuation capacity. Furthermore, presence magnetic Ni nanoparticles provided capability for composites. Density functional theory indicated that formation heterostructures boosted carrier mobility, facilitating electron transfer across interfaces, thus increasing interfacial polarization. Therefore, study offered novel approach designing rare-earth based MOFs derived absorbers capability.
Language: Английский
Citations
0
Advanced Electronic Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 8, 2025
Abstract Metal–Organic‐Frameworks (MOFs) are commonly used as microwave‐absorbing materials after pyrolysis treatment. Rare researchers treat MOFs non‐conductive and use them absorbing directly. In this paper, MOFs@P‐C‐800 composite prepared adopt to hydrothermal ultrasonic dispersion methods by regulating the morphological characteristics of content P‐C‐800. As for Co‐BDC‐P‐C‐800, maximum reflection loss reaches −18.4 dB at 14.29 GHz effective absorption bandwidth (EAB) achieves 3.87 from 13.5 17.37 GHz. After contents P‐C‐800 is adjusted, Co‐BDC‐P‐C‐800 (0.05 g) exhibited excellent microwave performance, RL value −60 13 with a thickness 2.0 mm, EAB 5.91 12.02 17.93 This paper not only provides new application direction MOFs, but also offers promising research development materials.
Language: Английский
Citations
0