Research and Development Centre, Bharathiar University, Coimbatore 641046, India.
Department of Chemistry, Vel Tech Multi Tech., Chennai 600062, India.
Int J Biol Macromol. 2019 Oct 1;138:546-555. doi: 10.1016/j.ijbiomac.2019.07.120. Epub 2019 Jul 20.
In recent times, metal oxide-organic nanocomposites have received great attention because of their feasibility to wide range applications such as super capacitors, antibacterial activity, biomedical sensors, battery applications and microfluidic devices. In this work, zinc oxide-chitosan (ZnO-CS) and their novel tin zinc oxide-chitosan (SnZnO-CS) hybrid nanocomposites successfully synthesized by a simple one-pot sol-gel reaction. The equal metal oxide ratio such as 0.5, 1.0, 1.5 and 2.0% (W/V) for zinc and tin sources with constant weight of chitosan were used to prepare the SnZnO-CS nanocomposites. Fourier transform infrared spectroscopy results proved the formation of SnZnO-CS nanocomposites. X-ray diffraction patterns discovered the mixed phase polycrystalline nature of SnZnO-CS nanocomposites. Optical and luminescence properties were extensively studied for nanocomposites by UV-Vis and photoluminescence spectroscopy, respectively. The surface modification elaborately discussed with scanning electron microscope images due to incorporation of SnO with ZnO-CS matrix. The antibacterial properties of SnZnO-CS were tested against Escherichia coli, Salmonella Typhi and Klebseilla Pneumoniae bacterial species.
近年来，由于金属氧化物-有机纳米复合材料在超级电容器、抗菌活性、生物医学传感器、电池应用和微流控器件等广泛应用方面的可行性，引起了人们的极大关注。在这项工作中，通过简单的一锅溶胶-凝胶反应成功合成了氧化锌-壳聚糖（ZnO-CS）及其新型锡锌氧化物-壳聚糖（SnZnO-CS）杂化纳米复合材料。使用等摩尔金属氧化物（如锌和锡源的 0.5、1.0、1.5 和 2.0%（W/V）），与壳聚糖的恒定重量相结合，用于制备 SnZnO-CS 纳米复合材料。傅里叶变换红外光谱结果证明了 SnZnO-CS 纳米复合材料的形成。X 射线衍射图谱发现了 SnZnO-CS 纳米复合材料的混合多晶特性。通过紫外-可见分光光度计和光致发光光谱分别对纳米复合材料的光学和发光性能进行了广泛研究。通过扫描电子显微镜图像详细讨论了表面改性，因为 SnO 与 ZnO-CS 基质的结合。测试了 SnZnO-CS 的抗菌性能，以对抗大肠杆菌、伤寒沙门氏菌和肺炎克雷伯菌等细菌。
