Synthesis of N-doped SiC nano-powders with effective microwave absorption and enhanced photoluminescence

Wang, Cheng; You, Tiancheng; Zhang, Yunfei; Ming, Song; Huang, Zhaozhong; Xia, Weidong

doi:10.1016/j.jallcom.2022.167699

Cited by 11 publications

(5 citation statements)

References 70 publications

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“…As shown in Figure 4C2, sample S 2 exhibits the optimal microwave absorption performance. Table 1 shows a comparison between the experimental results of this study and those of the studies conducted on SiC absorbing materials in the recent years, 8,9,23,46,49 and the data in the table show that Fe 3 O 4 /C@SiC is a microwave absorbing material with several advantages and application prospects.…”

Section: Resultsmentioning

confidence: 81%

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Wei,

Wang,

Rehman

et al. 2023

J Am Ceram Soc.

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The Fe3O4/C@SiC nanocomposites were synthesized by pyrolyzing MIL‐101(Fe)@SiC nanocomposites under Ar gas atmosphere. The magnetic Fe3O4 enhances the magnetic loss of the composite material, while the abundant defects and voids on the surface of MIL‐101(Fe)‐derived porous carbon form a network with SiC whiskers, extending the transmission path of electromagnetic waves. The synergistic effect of Fe3O4 and porous carbon optimizes the impedance matching of the material and improves its attenuation capability. As a result, the Fe3O4/C@SiC nanocomposite exhibits excellent microwave absorption performance. Fe3O4/C@SiC nanocomposites about minimal reflection loss (RLmin) of −80.11 dB at 5.93 GHz and an effective absorption bandwidth (RL −10 dB) of 3.57 GHz (4.33–7.90 GHz). The findings of this study shed light on the potential of SiC for microwave absorption applications.

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Section: Resultsmentioning

confidence: 81%

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Wei,

Wang,

Rehman

et al. 2023

J Am Ceram Soc.

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“…More recently, a new technique that can convert small organic molecules to SiC/C composites with the assistance of atmospheric plasmas has been successfully developed by Xia’s group. 132 , 139 , 140 The schematic diagram of this process can be observed in Figure 2 K, where hexamethyldisilane (HMDS) and methane are the precursors for SiC/C composites and Ar is utilized to generate atmospheric plasmas. Very interestingly, SiC/C composites from this way usually present desirable core-shell configuration ( Figure 2 L), resulting in full contact between SiC nanoparticles and carbon shells.…”

Section: Sic/c Compositesmentioning

confidence: 99%

State-of-the-art in carbides/carbon composites for electromagnetic wave absorption

Hu,

Gai,

Liu

et al. 2023

iScience

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“…SiC has low density, high melting point, oxidation resistance, and adjustable dielectric properties, making it the most widely studied ceramic‐based absorbing material in recent years 3 . Researchers have conducted numerous studies on the dielectric loss and absorption mechanism of SiC, including doping modification, 4,5 morphology modification, 6,7 structural design, 8,9 and component optimization 10…”

Section: Introductionmentioning

confidence: 99%

“…2 SiC has low density, high melting point, oxidation resistance, and adjustable dielectric properties, making it the most widely studied ceramic-based absorbing material in recent years. 3 Researchers have conducted numerous studies on the dielectric loss and absorption mechanism of SiC, including doping modification, 4,5 morphology modification, 6,7 structural design, 8,9 and component optimization. 10 However, there is a problem with the small complex permittivity and poor dielectric loss of SiC-based absorbing materials, 11 which pose challenges in achieving broadband and strong absorption.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical and wave‐absorption properties of SiC–Si₃N₄–FeSi porous ceramics by introducing Al

Zhang,

Ma,

et al. 2024

J Am Ceram Soc.

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SiC‐based porous ceramic wave‐absorbing materials have attracted much attention due to their excellent properties such as low density, high‐temperature resistance, and oxidation resistance. In this work, the impedance matching of SiC ceramics is improved by introducing Si3N4 wave‐transparent phase, and the dielectric loss capability of SiC ceramics is enhanced by introducing FeSi wave loss phase. To achieve a balance between impedance matching and absorption loss in porous ceramics, different molar contents of Al were introduced into FeSi to tailor electromagnetic parameters. The effects of introducing FeAlxSi1−x on the phase composition, microstructure, dielectric loss, and microwave absorption mechanism of SiC–Si3N4 porous ceramics were systematically investigated. When FeAl0.25Si0.75 is added, the minimum reflection loss of the porous ceramics is as low as −58.02 dB, and the flexural strength is as high as 87.23 MPa. The presence of Al promotes the transformation of the Si3N4 crystal and the generation of Al2O3. The introduction of FeAl0.25Si0.75 into SiC–Si3N4 has constructed “inductor–capacitor–resistance” microcircuit, which enhances polarization loss, conductivity loss, and magnetic loss, and realized the double enhancement of the mechanical and wave‐absorbing properties of porous ceramics.

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Synthesis of N-doped SiC nano-powders with effective microwave absorption and enhanced photoluminescence

Cited by 11 publications

References 70 publications

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

State-of-the-art in carbides/carbon composites for electromagnetic wave absorption

Enhanced mechanical and wave‐absorption properties of SiC–Si₃N₄–FeSi porous ceramics by introducing Al

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Synthesis of N-doped SiC nano-powders with effective microwave absorption and enhanced photoluminescence

Cited by 11 publications

References 70 publications

Fe3O4/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Fe3O4/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

State-of-the-art in carbides/carbon composites for electromagnetic wave absorption

Enhanced mechanical and wave‐absorption properties of SiC–Si3N4–FeSi porous ceramics by introducing Al

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Product

Resources

About

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Fe₃O₄/C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC

Enhanced mechanical and wave‐absorption properties of SiC–Si₃N₄–FeSi porous ceramics by introducing Al