The nanocomposites of biopolymers and bimetallic oxides are exciting classes of materials. Besides the economic and environmental considerations, these materials became the best candidates for various applications in industry and medicine. In this study, CuWO₄ nanoparticles (NP) with high purity were prepared by co-precipitation and loaded into poly(vinyl pyrrolidone)/chitosan (PVP/Cs) films. XRD results showed that CuWO₄ has a triclinic phase with an average crystallite size of 43 nm. PVP/Cs is semi-crystalline blend and its crystallinity degraded by CuWO₄ incorporation. EDX analysis was used to study the chemical composition of all samples. FE-SEM showed that CuWO₄ has particle sizes of 50–150 nm and that the crack-free surface of PVP/Cs became rougher and more porous after loading of CuWO₄ NP. FTIR confirmed the presence of the reactive functional group of CuWO₄, PVP, and Cs and that the low doping ratio of CuWO₄ NP restricted the functional group’s vibrations. The UV–vis–NIR investigation showed that the films have a small absorption index and high transmittance in the range of 68–90%. The direct and indirect band gaps (\({E}_{g}^{dir}\) and \({E}_{g}^{ind}\)) of the blend were found equal to 5.0 and 4.2 eV and can be tuned by CuWO₄ content. Similarly, the index of refraction and carrier concentration/electron effective mass ratio (N/m*), the dielectric constant (ε′ = 8.3–24.5), and the dielectric loss depend on the applied frequency, temperature, and CuWO₄ filler content. The conductivity (σ_ac) ranges from 1.2 × 10^–6 to 9.16 × 10^–4 S/m and exhibits the Arrhenius behavior. The optical and dielectric results show that the prepared PNC may suit some energy storage device,s such as supercapacitors, and organic optoelectronic devices, such as light emitting diodes and/or photovoltaic solar cells.

生物聚合物和双金属氧化物的纳米复合材料是令人兴奋的材料类别。除了经济和环境方面的考虑之外，这些材料还成为工业和医学领域各种应用的最佳候选材料。本研究通过共沉淀法制备了高纯度的CuWO _{4纳米颗粒(NP)，并将其负载到聚(乙烯基吡咯烷酮)/壳聚糖(PVP} / Cs)薄膜中。XRD结果表明CuWO ₄具有三斜晶相，平均晶粒尺寸为43 nm。PVP / Cs是半结晶共混物，其结晶度因CuWO ₄的掺入而降低。EDX 分析用于研究所有样品的化学成分。FE-SEM表明CuWO _{4粒径为 50–150 nm，负载 CuWO 4} NP后，PVP / Cs的无裂纹表面变得更加粗糙且多孔。_{FTIR证实了CuWO 4} 、PVP和Cs反应性官能团的存在，并且CuWO ₄ NP的低掺杂比例限制了官能团的振动。UV-vis-NIR 研究表明，该薄膜具有较小的吸收指数和较高的透射率（68-90%）。发现混合物的直接和间接带隙（\({E}_{g}^{dir}\)和\({E}_{g}^{ind}\) ）等于 5.0 和 4.2 eV并可通过 CuWO _{4进行调谐}内容。同样，折射率和载流子浓度/电子有效质量比 (N/m*)、介电常数 ( ε′  = 8.3–24.5) 和介电损耗取决于应用频率、温度和 CuWO ₄填料含量。电导率 ( σ _ac ) 范围为 1.2 × 10 ^–6至 9.16 × 10 ^–4  S/m，并表现出阿伦尼乌斯行为。光学和介电结果表明，所制备的PNC可适用于一些能量存储器件（例如超级电容器）和有机光电器件（例如发光二极管和/或光伏太阳能电池）。