壳聚糖/微晶纤维素叠层 rGO/Fe3O4 薄膜:宽带介电光谱研究

IF 1.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY ECS Journal of Solid State Science and Technology Pub Date : 2024-09-12 DOI:10.1149/2162-8777/ad775c
Sawsan Dacrory, Samir Kamel, Naglaa Nasralla and Gamal Turky
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引用次数: 0

摘要

本文报道了可同时用于储能的无机/有机混合复合材料。研究人员制作了由壳聚糖(Cs)和植入还原氧化石墨烯(rGO)和/或磁性 Fe3O4 纳米颗粒的微晶纤维素(MCC)薄膜。通过傅立叶变换红外光谱、X 射线衍射、热重分析和扫描电子显微镜与能量色散电子显微镜研究了 rGO 和/或 Fe3O4 对 Cs/MCC 薄膜的增强作用。此外,还研究了它们的磁性、导电性、介电常数和介电损耗行为。在磁性研究中,两种负载了 Fe3O4 的薄膜都具有顺磁性。饱和磁化随着 rGO 的存在而降低。在较低频率下,电荷传输和界面极化会导致介电常数随着频率的降低而突然近似线性地增加。遗憾的是,没有发现电极极化的迹象,这降低了所制备成分存储电能的能力。我们采用电模量表示法来定量和数值确定界面极化的弛豫时间。没有发现电极极化的迹象。
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Chitosan/Microcrystalline Cellulose Overlaid rGO/Fe3O4 Films: Broadband Dielectric Spectroscopy Investigations
Hybrid and straightforward inorganic/organic composites that can be used simultaneously for energy storage are reported. Films from chitosan (Cs) with microcrystalline cellulose (MCC) implanted with reduced graphene oxide (rGO) and/or magnetic Fe3O4 nanoparticles were fabricated. The reinforcement of the Cs/MCC films with rGO and /or Fe3O4 was studied through Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy with energy dispersive electron spectroscopy. In addition, their magnetic, conductivity, dielectric constant, and dielectric loss behaviors were studied. The magnetic investigations of the two films loaded with Fe3O4 have supper paramagnetic behavior. The saturation magnetization was decreased with the presence of rGO. At lower frequencies, the contribution of charge transport and interfacial polarization causes a sudden and nearly linear increase in permittivity with decreasing frequency. Unfortunately, no indication of electrode polarization was found, which reduces the ability of the prepared composition to store electrical energy. The electric modulus representation was employed to determine the relaxation time of the interfacial polarization quantitatively and numerically. No indication of electrode polarization was found.
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来源期刊
ECS Journal of Solid State Science and Technology
ECS Journal of Solid State Science and Technology MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED
CiteScore
4.50
自引率
13.60%
发文量
455
期刊介绍: The ECS Journal of Solid State Science and Technology (JSS) was launched in 2012, and publishes outstanding research covering fundamental and applied areas of solid state science and technology, including experimental and theoretical aspects of the chemistry and physics of materials and devices. JSS has five topical interest areas: carbon nanostructures and devices dielectric science and materials electronic materials and processing electronic and photonic devices and systems luminescence and display materials, devices and processing.
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