WS2 nanosheets anchored on N-doped carbon fibers for superior electromagnetic wave absorption

Liu, Xudong; Zhang, Song; Yu, Meng; Zhao, Xiaoxiao; Jia, Yanwei; Huang, Ying; Zong, Meng

doi:10.1016/j.cej.2023.142932

Cited by 47 publications

(6 citation statements)

References 77 publications

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“…Notably, the M s values gradually decreased with an increase in the thickness of the coated shell. This phenomenon can be attributed to the dilution in relative concentration of FeCo magnetic particles followed by LAS and SiO 2 modification, and the magnetic field distribution of FeCo particles changed by nonmagnetic components reduces the inherent magnetic properties of materials. , Nevertheless, it is noteworthy that the ferromagnetic properties of FeCo@SiO 2 @LAS remain intact, even after being modified with LAS and SiO 2 shells.…”

Section: Resultsmentioning

confidence: 99%

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Zhong,

Wang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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The poor impedance matching characteristics of FeCo alloy nanoparticles severely restrict its development with higher efficiency, wider bandwidth, and stronger absorption materials. The main strategy for addressing this issue is to design core−shell structures to adjust the electromagnetic parameters and impedance matching. Currently, the research of core−shell structures primarily focuses on composites of magnetic/single wave-transparent/dielectric materials, with limited research on synergistic modifications of multiple wavetransparent components in magnetic nanomaterials for enhanced electromagnetic wave absorption. Here, a trilayer core−shell structure FeCo@SiO 2 @lithium−aluminum−silicate glass-ceramic (LAS) nanoabsorber was successfully fabricated via the sol−gel method in a kinetically controlled manner, which exhibited fascinating electromagnetic wave absorption performance with a minimum reflection loss of −50.90 dB and a maximum effective absorption bandwidth of 7.52 GHz. The results confirm that the modulating effects of the FeCo core on electromagnetic wave absorption performance for SiO 2 at low frequency and LAS at high frequency can be coupled and superimposed. This study demonstrates the potential of magnetic nanomaterials modified by incorporating multiple wave-transparent components, while providing insights for the development of lightweight and wide effective bandwidth nanoabsorbers.

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Section: Resultsmentioning

confidence: 99%

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Zhong,

Wang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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“…As shown in Figure 4i and Figure S5i (Supporting Information), 𝛼 of LNSF-600 is much higher than that of LNSF-550, LNSF-650, PL, and LN-600, and the increase of CNFs and CNTs helps to form a more complete conductive network, indicating that LNSF-600 has the strongest EMWs attenuation capability. [53,54] Both PL and LN-600 have low attenuation capacity, causing limited EMW absorption.…”

Section: Resultsmentioning

confidence: 99%

Lotus Leaf Derived NiS/Carbon Nanofibers/Porous Carbon Heterogeneous Structures for Strong and Broadband Microwave Absorption

Jiang,

Wang,

Cui

et al. 2023

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Developing composite materials with the synergistic effects of heterogeneous structures and multiple components is considered as a promising strategy to achieve high‐performance electromagnetic wave (EMW) absorbers. To further satisfy the demand of broadband and strong microwave absorption, a novel NiS/carbon nanofibers (CNFs)/porous carbon composite is successfully synthesized by hydrothermal and chemical vapor deposition using lotus leaves as a biomass carbon source. A few carbon nanotubes (CNTs) and uniformly dispersed Ni nanocrystals have also been found in the hybrid. Benefiting from the porous structure derived from lotus leaves, the combination of dielectric NiS, conductive carbon nanomaterials, and magnetic Ni nanoparticles, together with the three‐dimensional conductive network of CNFs and CNTs, the remarkable EMW absorption properties with a minimum reflection loss up to −67.65 dB have been achieved at merely 2.32 mm. Besides, the widest effective absorption band can reach 5.9 GHz with a thin thickness of 2.07 mm, covering almost the entire Ku band. In addition, under the incident angle of 31°, the radar cross‐section reduction value of LNSF‐600 can reach 42.88 dBm2. Therefore, this work provides an efficient and facile method for manufacturing outstanding biomass‐derived EMW absorbers.

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“…The dielectric loss tangent tan d 3 (tan d 3 = 3 ′ ′ /3 ′ ) is introduced to further evaluate the dielectric loss This journal is © The Royal Society of Chemistry 2023 capability. 50,51 Generally, the higher the tan d 3 value, the stronger the dielectric loss ability. In Fig.…”

Section: Resultsmentioning

confidence: 99%

Constructing interfacial polarization sites within a honeycomb-like porous structureviaa spatially confined-etching strategy for boosting electromagnetic wave absorption

Hou,

Wang,

et al. 2023

J. Mater. Chem. A

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WS2 nanosheets anchored on N-doped carbon fibers for superior electromagnetic wave absorption

Cited by 47 publications

References 77 publications

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Lotus Leaf Derived NiS/Carbon Nanofibers/Porous Carbon Heterogeneous Structures for Strong and Broadband Microwave Absorption

Constructing interfacial polarization sites within a honeycomb-like porous structureviaa spatially confined-etching strategy for boosting electromagnetic wave absorption

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WS2 nanosheets anchored on N-doped carbon fibers for superior electromagnetic wave absorption

Cited by 47 publications

References 77 publications

Trilayer Core–Shell FeCo@SiO2@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Trilayer Core–Shell FeCo@SiO2@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Lotus Leaf Derived NiS/Carbon Nanofibers/Porous Carbon Heterogeneous Structures for Strong and Broadband Microwave Absorption

Constructing interfacial polarization sites within a honeycomb-like porous structureviaa spatially confined-etching strategy for boosting electromagnetic wave absorption

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Product

Resources

About

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption

Trilayer Core–Shell FeCo@SiO₂@Lithium–Aluminum–Silicate Microspheres for Electromagnetic Wave Absorption