Cotton fiber-derived carbon decorated with MoS2 for high electromagnetic wave absorption

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2024-08-08 DOI:10.1016/j.matchemphys.2024.129844

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引用次数: 0

Abstract

Biomass-derived carbon materials have advantages such as lightweight and strong sustainability compared with traditional carbon-based absorbing materials, thus having great potential in electromagnetic wave (EMW) absorbing materials. CFC/MoS₂ composites with a structure of cotton fiber-derived carbon (CFC) decorated with molybdenum disulfide (MoS₂) have been prepared using the simple carbonization and hydrothermal method in this work, which had high EMW absorption. The analysis results indicate that high EMW absorption of CFC/MoS₂ composites is attributed to the balanced impedance matching, while being affected by a combination of conductive loss, multiple scattering, and polarization loss. The minimum reflection loss of CFC/MoS₂ composite with thickness of 3.0 mm could reach −49.7 dB and effective bandwidth could reach 3.6 GHz (8.0–11.6 GHz) at a frequency of 9.25 GHz. This work fully utilizes the advantages of biomass-derived carbon and proposes a novel research approach for development of environmentally friendly and low-cost EMW absorbing composites.

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用 MoS2 对棉纤维衍生碳进行装饰，实现高电磁波吸收率

与传统的碳基吸波材料相比，生物质衍生碳材料具有重量轻、可持续性强等优点，因此在电磁波（EMW）吸波材料方面具有巨大潜力。本研究采用简单的碳化和水热法制备了以二硫化钼（MoS2）装饰的棉纤维衍生碳（CFC）结构的 CFC/MoS2 复合材料，具有很高的电磁波吸收率。分析结果表明，CFC/MoS2 复合材料的高电磁波吸收归因于平衡阻抗匹配，同时受到导电损耗、多重散射和极化损耗的综合影响。厚度为 3.0 mm 的 CFC/MoS2 复合材料的最小反射损耗可达 -49.7 dB，在频率为 9.25 GHz 时，有效带宽可达 3.6 GHz（8.0-11.6 GHz）。这项研究充分发挥了生物质源碳的优势，为开发环保、低成本的电磁波吸收复合材料提出了一种新的研究方法。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.

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