The effect of iron oxide nanoparticles (Fe₂O₃ NPs) content on the structural and optical parameters of polyvinyl alcohol/graphene (PVA/G) blend has been investigated. Fe₂O₃ NPs were synthesized by the hydrothermal procedure. Nanocomposite (NC) films of PVA/G filled with different amounts of Fe₂O₃ NPs were equipped using the solution casting technique. The surface morphology, structural, and optical properties were examined by scanning electron microscope (SEM), X-ray diffraction (XRD), and ultraviolet-visible-near-IR (UV-Vis-NIR) spectrophotometry techniques, respectively. SEM micrographs reveal the homogenous distribution of Fe₂O₃ NPs in the PVA/G matrix. The XRD analysis exhibits the formulation of the hematite phase of Fe₂O₃ NPs and the semi-crystalline nature of PVA/G NC films. The UV-Vis-NIR data analysis shows that the optical properties of the PVA/G blend could be tailored via Fe₂O₃ NPs filling. Wemple–DiDomenico model is utilized to explore the dispersion parameters of the prepared NCs. A significant effect of Fe₂O₃ NPs filling is realized on the oscillator and dispersion energies, infinite refractive index, dielectric constant, average oscillator strength and the lattice dielectric constant of the NC films. PVA/G filled Fe₂O₃ NPs are suggested for different optical and storage applications.

中文翻译：

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氧化铁含量对聚乙烯醇/石墨烯纳米复合薄膜结构和光学参数的影响

研究了氧化铁纳米颗粒 (Fe ₂ O ₃ NPs) 含量对聚乙烯醇/石墨烯 (PVA/G) 共混物的结构和光学参数的影响。Fe ₂ O ₃ NPs 通过水热法合成。使用溶液浇铸技术装备了填充有不同量 Fe ₂ O _{3 NPs 的 PVA/G 纳米复合 (NC) 薄膜。}分别通过扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和紫外-可见-近红外 (UV-Vis-NIR) 分光光度计技术检查了表面形貌、结构和光学性质。SEM 显微照片显示 Fe ₂ O _{3的均匀分布}PVA/G 矩阵中的 NP。_{XRD分析展示了Fe 2} O ₃ NPs的赤铁矿相的配方和PVA/G NC薄膜的半结晶性质。UV-Vis-NIR 数据分析表明，PVA/G 共混物的光学特性可以通过 Fe ₂ O ₃ NPs 填充来调整。Wemple-DiDomenico 模型用于探索制备的 NC 的色散参数。Fe ₂ O ₃ NPs填充对NC薄膜的振子和色散能、无限折射率、介电常数、平均振子强度和晶格介电常数有显着影响。PVA/G填充Fe ₂ O ₃建议将 NP 用于不同的光学和存储应用。