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新型花生壳/CoFeO/(还原氧化石墨烯)/聚乙烯醇纳米复合材料的制备及其电磁波吸收性能

Preparation and electromagnetic waves absorption performance of novel peanut shell/CoFeO/(RGO)/PVA nanocomposites.

作者信息

Gholipur Reza

机构信息

Department of Physics, Faculty of Science, Razi University, Kermanshah, Iran.

出版信息

Sci Rep. 2024 Dec 28;14(1):30699. doi: 10.1038/s41598-024-79286-2.

DOI:10.1038/s41598-024-79286-2
PMID:39730402
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11680715/
Abstract

Novel functional materials possessing the capability to attenuate electromagnetic energy are being increasingly incorporated into home decor as concerns over excessive electromagnetic radiation pollution continue to grow. The properties of magnetism and dielectricity in the flexible peanut shell/CoFeO/reduced graphene oxide/polyvinyl alcohol (PS/CF/(RGO)/PVA) nanocomposites can be finely tuned by adjusting the amount of RGO in the mixture. An examination of the composite's absorption capabilities revealed a direct link between higher RGO content and enhanced absorption. Due to the presence of multiple pathways for electromagnetic wave transmission through the three-dimensional porous structure, as well as the synergistic effects of dielectric-magnetic properties and various defects in the carbon derived from peanut shells, the PS/CF/(RGO)/PVA nanocomposites exhibit remarkable impedance matching and exceptional attenuation capabilities to -20.98404 dB for a thickness of 1 mm. Additionally, the PS/CF/(RGO)/PVA nanocomposites have shown great promise in the production of flexible electronic devices like light-dependent resistors. Their lightweight and flexible nature play a crucial role in their success in this application. It is worth mentioning, however, that these nanocomposites bear a resemblance to traditional absorber equipment used in the industry.

摘要

随着对过量电磁辐射污染的担忧不断加剧，具有衰减电磁能量能力的新型功能材料正越来越多地被应用于家居装饰中。通过调整混合物中氧化石墨烯（RGO）的含量，可以精细调节柔性花生壳/钴铁氧体/还原氧化石墨烯/聚乙烯醇（PS/CF/(RGO)/PVA）纳米复合材料的磁性和介电性能。对该复合材料吸收能力的研究表明，较高的RGO含量与增强的吸收之间存在直接联系。由于电磁波通过三维多孔结构传输存在多种途径，以及介电-磁性特性和花生壳衍生碳中的各种缺陷的协同作用，PS/CF/(RGO)/PVA纳米复合材料表现出显著的阻抗匹配，对于1毫米的厚度，其衰减能力可达-20.98404分贝。此外，PS/CF/(RGO)/PVA纳米复合材料在制造如光敏电阻等柔性电子器件方面显示出巨大潜力。它们的轻质和柔性特性在该应用的成功中起着关键作用。然而，值得一提的是，这些纳米复合材料与行业中使用的传统吸收设备有相似之处。

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