优化聚乙烯醇/聚乙烯吡咯烷酮/锌锰酸盐纳米复合材料的结构、光学、介电和电气性能，用于光学和储能应用

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2024-11-14 DOI:10.1016/j.rinp.2024.108045

Maha A. Alqarni , A. Rajeh

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引用次数: 0

摘要

本研究探讨了嵌入锌锰酸盐纳米粒子（ZnMn2O4NPs）的环保型聚乙烯醇（PVA）和聚乙烯吡咯烷酮（PVP）基质的结构、介电、光学和电学特性。纳米复合材料薄膜采用浇铸法制备，有望应用于柔性电化学装置。傅立叶变换红外光谱证实 ZnMn2O4NPs 成功地融入了聚合物基体。紫外可见吸收分析表明，随着 ZnMn2O4 纳米粒子含量的增加，吸光度也随之增加。在各种混合纳米复合材料中，含有 2.5 % ZnMn2O4 NPs 的样品的带隙能最低。对所有制备的薄膜都进行了电导率、介电强度和复阻抗测量。结果表明，随着频率和纳米填料浓度的增加，交流电导率和介电特性也在增加。总体而言，与纯聚合物混合物相比，PVA/PVP-2.5 % ZnMn2O4 纳米复合材料表现出更优越的特性。该样品具有最佳的导电性和介电常数。这些发现表明，通过仔细调整 ZnMn2O4 的浓度，可以对这些纳米复合薄膜的介电、光学和电学特性进行微调。这种多功能性为光电设备、储能设备和纳米介电材料的应用提供了广阔的前景。

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Optimizing the structural, optical, dielectric, and electrical properties of polyvinyl alcohol/polyvinyl pyrrolidone/zinc manganite nanocomposites for optical and energy storage applications

This study investigates the structural, dielectric, optical, and electrical properties of eco-friendly polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) matrices embedded with zinc manganite nanoparticles (ZnMn₂O₄NPs). The nanocomposites films were prepared using a casting method for potential applications in flexible electrochemical devices. FTIR spectroscopy confirmed the successful incorporation of ZnMn₂O₄NPs into the polymeric matrix. UV–Vis absorption analysis revealed an increase in absorbance with increasing ZnMn₂O₄ nanoparticle content. Among the various blend nanocomposites, the lowest bandgap energy was observed for the sample containing 2.5 %ZnMn₂O₄ NPs. Measurements of electrical conductivity, dielectric characteristics, and complex impedance were made for all prepared films. The findings showed that as frequency and nanofiller concentration increased, so did AC conductivity and dielectric characteristics. Overall, the PVA/PVP-2.5 % ZnMn₂O₄ nanocomposite exhibited superior properties compared to the pure polymer blend. This sample demonstrated optimal electrical conductivity and dielectric constant. These findings suggest that by carefully adjusting the ZnMn₂O₄ concentration, it is possible to fine-tune the dielectric, optical, and electrical properties of these nanocomposite films. This versatility offers promising potential for applications in optoelectronic devices, energy storage devices, and nanodielectric materials.

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

期刊介绍： Results in Physics is an open access journal offering authors the opportunity to publish in all fundamental and interdisciplinary areas of physics, materials science, and applied physics. Papers of a theoretical, computational, and experimental nature are all welcome. Results in Physics accepts papers that are scientifically sound, technically correct and provide valuable new knowledge to the physics community. Topics such as three-dimensional flow and magnetohydrodynamics are not within the scope of Results in Physics. Results in Physics welcomes three types of papers: 1. Full research papers 2. Microarticles: very short papers, no longer than two pages. They may consist of a single, but well-described piece of information, such as: - Data and/or a plot plus a description - Description of a new method or instrumentation - Negative results - Concept or design study 3. Letters to the Editor: Letters discussing a recent article published in Results in Physics are welcome. These are objective, constructive, or educational critiques of papers published in Results in Physics. Accepted letters will be sent to the author of the original paper for a response. Each letter and response is published together. Letters should be received within 8 weeks of the article''s publication. They should not exceed 750 words of text and 10 references.