Facile synthesis of MoO2/S-doped carbon nanofibers for ultra-high electromagnetic wave absorption

IF 10.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon Pub Date : 2025-02-16 DOI:10.1016/j.carbon.2025.120121

Pingping Mo , Anze Shui , Hulei Yu , Junjie Qian

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引用次数: 0

Abstract

Nanocomposites with engineered heterogeneous structures and multi-component designs demonstrate significant potential for enhancing electromagnetic wave (EMW) absorption performance. In this study, MoO₂/S-doped carbon nanofibers (MoO₂/S-CNF) were synthesized through a combination of electrospinning, oxidative stabilization, and high-temperature carbonization. The MoO₂/S-CNF achieved a minimum reflection loss (RL_min) value of −61.26 dB at 9.43 GHz with a thickness of 3.65 mm, alongside an effective absorption bandwidth (EAB) of 4.81 GHz, covering the entire X band. When the thickness was reduced to 2.65 mm, the EAB_max reached 6.85 GHz, fully encompassing the Ku band. Moreover, CST simulations confirmed the practical applicability of MoO₂/S-CNF in prospective high-frequency applications. The remarkable EMW attenuation performance is attributed to superior impedance matching, enhanced conduction loss, and multiple polarization mechanisms. This work provides a novel strategy for synthesizing carbon-based fibers and offers valuable insights for developing broadband-absorbing materials.

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.