Electromagnetic microwave absorption property of MoC synthesized via a facile solid-state reaction method

Wang, Weili; Sun, Guoxun; Sun, Xiaoning; Huang, Meng; Liang, Yanjie; Bi, Jianqiang

doi:10.1007/s10854-021-06906-2

Cited by 7 publications

(4 citation statements)

References 58 publications

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“…Comparison chart of the electromagnetic absorption performance for 1-, 2-, 3-, 4-, and 5-Mo 3 C 2 @NC carbide/carbon-based MAMs reported in previous reports, such as Mo 2 C/C NCs, Mo 2 C/C, Mo 2 C@C, MoC, Mo 2 C/C nanorods, Ti 3 C 2 Ti x /CNTs, C/Fe 3 C CNFs, NGP/Ti 3 C 2 TiC, TiC/SiBCN, C/TiC/Ti 3 C 2 , and N–TiC@C . (a) Scatter chart: frequency vs RL.…”

Section: Resultsmentioning

confidence: 95%

“…Compared with SiC/carbon or Ti 3 C 2 MXenes/carbon, molybdenum carbide (Mo 2 C and MoC) coupled with carbon materials is confirmed to be an excellent EMW absorbing material that has the particular advantages of corrosion resistance, low density, mechanical strength, oxidative stability, thermal stability, and excellent physical and chemical properties. Some interesting results regarding the EMWA properties of Mo 2 C/carbon and MoC/carbon composites have been reported. − Du and Han et al prepared ultrasmall Mo 2 C nanoparticle-encapsulated carbon polyhedrons by pyrolysis of Mo-substituted ZIF-8, which displayed a powerful RL of −60.40 dB at 16.0 GHz . Based on this achievement, they synthesized pomegranate-like Mo 2 C@C with excellent EMWA performance, where the minimum RL reached −48.00 dB at 12.5 GHz and is attributed to the unique microstructure of the material .…”

Section: Introductionmentioning

confidence: 99%

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Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

et al. 2022

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Mo 3 C 2 @N-doped carbon microspheres (Mo 3 C 2 @ NC) have been discovered to be a family of superior microwave absorbing materials. Herein, Mo 3 C 2 @NC was synthesized through a simple high-temperature carbonization process by evaporating a graphite anode and Mo wire in Ar and N 2 atmospheres with an Ndoping content of 6.4 at. %. Attributing to the self-assembly mechanism, the number of Mo wires inserted into the graphite anode determined the morphologies of Mo 3 C 2 @NC, which were the unique lemon-like (1-and 2-Mo 3 C 2 @NC) and fig-like (3-, 4-, and 5-Mo 3 C 2 @NC) microstructures. 1-and 2-Mo 3 C 2 @NC exhibited powerful reflection losses (RLs) of −45.60, −45.59, and −47.11 dB at the S, C and X bands, respectively, which corresponded to thinner thicknesses. 3-, 4-, and 5-Mo 3 C 2 @NC showed outstanding absorption performance at the C, X, and Ku bands, respectively, with each value of a minimum RL less than −43.00 dB. In particular, the strongest RL (−43.56 dB) for 5-Mo 3 C 2 @NC corresponded to an ultrathin thickness of 1.3 mm. In addition, the maximum effective absorption bandwidth was 6.3 GHz for 4-Mo 3 C 2 @NC. After analysis, all Mo 3 C 2 @NC samples showed well-matched impedance due to the enhanced dielectric loss caused by the unique carbon structure and moderate magnetic loss derived from the weak magnetic property of Mo 3 C 2 . More importantly, the unique lemon-like and fig-like microstructures created sufficient interfaces and differentiated multiple reflection paths, which greatly contributed to the strong microwave absorptions at full wavebands. In full consideration of the simple preparation method and tunable absorption properties, Mo 3 C 2 @NC composites can be regarded as excellent electromagnetic wave absorption materials.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

et al. 2022

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“…mixed MoO 3 with CNTs or CB, and harvested MoC/CNTs and MoC/CB composites, where MoC/CNTs could generate RL of −42.2 dB and EAB of 4.0 GHz with an absorber thickness of 1.5 mm. 261 In order to stimulate the microstructural contribution to EM attenuation, Che’s group employed hollow N,P-doped carbon microspheres derived from dry yeast as the carbon matrix, and loaded (NH 4 ) 6 Mo 7 O 24 ·4H 2 O through hydrothermal treatment and then converted the intermediate products into final Mo 2 C/C composites. 262 It was found that in final composites, hollow N,P-doped carbon microspheres were decorated by heterogeneous nanoflowers with a diameter of ∼50 nm that were actually composed of core-shell Mo 2 C@C nanoparticles (∼5 nm).…”

Section: Molybdenum Carbide/carbon 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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“…[37,38] Absorbing material is a material that absorbs EMW into the material and converts them into other forms of energy. [39][40][41][42][43][44][45][46][47][48] The development of highly efficient EM absorption materials is beneficial for the elimination of secondary microwave contamination caused by the strong reflection of EM shielding materials. [49,50] Microwave-absorbing materials are also widely used in military applications.…”

Section: Introductionmentioning

confidence: 99%

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

Cai,

Yu,

Cheng

et al. 2023

Advanced Sustainable Systems

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Electromagnetic (EM) contamination has now become a non‐negligible problem. To solve the EM contamination problem, it is imperative to develop high‐efficiency absorption materials with thin thickness, light weight, strong absorption properties, and broad absorption bands. Carbon nanotubes (CNTs) have a special helical structure and chirality, which will lead to special EM effects and therefore can absorb EM microwaves through magnetic polarization attenuation such as hysteresis loss, domain wall resonance, and aftereffect loss. Moreover, they have the characteristics of light weight, good compatibility, wide absorption frequency band, and high electrical loss angle tangent. In this paper, the different structures of CNT microwave‐absorbing composites are reviewed and the effects of the composite structures on the microwave‐absorbing properties are systematically discussed. The methods and mechanisms of surface modification of CNT absorber composites and the effects of modification on the absorber properties are summarized in detail. The progress of two specific CNT microwave‐absorbing composites, namely flexible and high‐temperature microwave‐absorbing composites, is briefly described. The shortcomings and challenges in the application of CNT microwave‐absorbing composites are described and future research directions for CNT microwave‐absorbing composites are explored.

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Electromagnetic microwave absorption property of MoC synthesized via a facile solid-state reaction method

Cited by 7 publications

References 58 publications

Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

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

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

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Electromagnetic microwave absorption property of MoC synthesized via a facile solid-state reaction method

Cited by 7 publications

References 58 publications

Controllable Synthesis of Mo3C2 Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

Controllable Synthesis of Mo3C2 Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

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

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

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Product

Resources

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Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies

Controllable Synthesis of Mo₃C₂ Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies