The present study reports an eco-friendly synthesis of chitosan/silver (CS/Ag) nanocomposite using rutin by a bio-inspired method. The formation of brown color and UV–visible absorbance peak at 415 nm confirmed the synthesis of CS/Ag nanocomposite. X-ray diffraction (XRD) analysis revealed the crystalline peaks of both chitosan and silver in synthesized CS/Ag nanocomposite. Field emission-scanning electron microscopy (FE-SEM) analysis showed that the synthesized CS/Ag nanocomposite having predominant spherical shaped nanostructure with an average size of 23–78 nm. Fourier transform infrared spectroscopy (FTIR) analysis indicated the presence of functional derivatives related to chitosan and rutin in CS/Ag nanocomposite. Synthesized CS/Ag nanocomposite exhibited superior disc diffusion antibacterial activity against Bacillus subtilis and Escherichia coli. The in vitro antioxidant of CS/Ag nanocomposite was evaluated spectrophotometrically by using DPPH method. The percentage of antioxidant activity was increased with increasing concentration of CS/Ag nanocomposite. Furthermore, photocatalytic activity of CS/Ag nanocomposite was evaluated by the removal of methylene blue (MB) dye from aqueous solution under sunlight irradiation. Results showed that the degradation efficiency of MB reached up to 88% after irradiation for 220 min. Thus, the obtained results indicated that the synthesized CS/Ag nanocomposite using rutin can be a promising nanomaterial for multifunctional applications.

本研究报告通过生物启发方法使用芦丁进行壳聚糖/银（CS / Ag）纳米复合材料的生态友好合成。棕色的形成和415 nm的UV-可见吸收峰证实了CS / Ag纳米复合材料的合成。X射线衍射（XRD）分析揭示了合成的CS / Ag纳米复合材料中壳聚糖和银的结晶峰。场发射扫描电子显微镜（FE-SEM）分析表明，合成的CS / Ag纳米复合材料具有主要为球形的纳米结构，平均尺寸为23-78 nm。傅里叶变换红外光谱（FTIR）分析表明CS / Ag纳米复合材料中存在与壳聚糖和芦丁相关的功能性衍生物。合成的CS / Ag纳米复合材料对椎间盘扩散具有优异的抗菌活性枯草芽孢杆菌和大肠杆菌。采用DPPH法分光光度法评价了CS / Ag纳米复合材料的体外抗氧化剂。抗氧化剂活性的百分比随CS / Ag纳米复合材料浓度的增加而增加。此外，通过在阳光照射下从水溶液中去除亚甲基蓝（MB）染料来评估CS / Ag纳米复合材料的光催化活性。结果表明，辐照220 min后MB的降解效率达到88％。因此，获得的结果表明，使用芦丁合成的CS / Ag纳米复合材料可能是用于多功能应用的有前途的纳米材料。