Nanocomposite (NC) films based on biopolymer gelatin incorporated with varying amounts of K-doped zirconate (K 2 ZrO 3 ) nanoparticles (NPs) have been fabricated by solution intercalation technique. NPs obtained by combustion method and their TEM result revealed the average size of NPs is 18 nm ± 2. The effects of NPs content on structural and morphological behaviors of gelatin nanocomposite (NCs) have been established by XRD, FTIR and SEM methods. AC conductivity ( σ ) was performed using LCR meter. The σ increases with an increase in frequency and dosage of NPs where the maximum σ obtained is 5.73 × 10 –5 S/cm for gelatin/4 wt% K 2 ZrO 3 at 25 °C. Cyclic voltammetry data displayed that gelatin–K 2 ZrO 3 NCs have electrochemical stability in the range – 0.5 to + 1 V. Charge–discharge data exhibited a higher specific capacitance of 26.5 F/g with higher discharge time for NC doped with 4 wt% K 2 ZrO 3 as compared to pure gelatin. The optical behaviors of NCs were deduced by UV–visible (UV) spectroscopy, where the data showed a higher absorption intensity with increasing NPs, while band gap energy was reduced from 4.18 eV for pure gelatin to 2.91 eV for gelatin/4 wt% K 2 ZrO 3 . Swelling and contact angle data showed gelatin NC films tend to be less wettability as compared to pure gelatin.

中文翻译：

---

纳米钾掺杂锆酸盐对明胶生物聚合物纳米复合材料光电和电化学性能的影响

基于生物聚合物明胶的纳米复合材料 (NC) 薄膜与不同量的掺钾锆酸盐 (K 2 ZrO 3 ) 纳米颗粒 (NPs) 相结合，已通过溶液嵌入技术制造。通过燃烧法获得的纳米颗粒及其 TEM 结果表明纳米颗粒的平均尺寸为 18 nm ± 2。通过 XRD、FTIR 和 SEM 方法已经确定了纳米颗粒含量对明胶纳米复合材料 (NCs) 结构和形态行为的影响。交流电导率 (σ) 使用 LCR 计进行。σ 随着 NPs 的频率和剂量的增加而增加，其中在 25 °C 下，明胶/4 wt% K 2 ZrO 3 获得的最大 σ 为 5.73 × 10 –5 S/cm。循环伏安法数据显示，明胶-K 2 ZrO 3 NCs 的电化学稳定性范围为 – 0.5 至 + 1 V。充放电数据显示出更高的比电容，为 26。与纯明胶相比，掺杂 4 wt% K 2 ZrO 3 的 NC 放电时间为 5 F/g，放电时间更长。NCs 的光学行为由紫外-可见 (UV) 光谱推断，其中数据显示随着 NPs 的增加吸收强度更高，而带隙能量从纯明胶的 4.18 eV 降低到明胶的 2.91 eV/4 wt% K 2 ZrO 3 。溶胀和接触角数据表明，与纯明胶相比，明胶 NC 薄膜的润湿性往往较低。