Department of Chemistry, Urumu Dhanalakshmi College, Tiruchirappalli 620019, Tamil Nadu, India.
Department of Agricultural Microbiology, Horticultural College and Research Institute for Women, Navalur Kuttappattu, Tiruchirappalli 620009, Tamil Nadu, India.
J Nanosci Nanotechnol. 2019 Jun 1;19(6):3564-3570. doi: 10.1166/jnn.2019.16141.
In this present study, semiconductor zinc oxide (ZnO) nanoparticles were successfully prepared by microwave irradiation (ZnO-MIM) and conventional combustion (ZnO-CCM) method, respectively using plant extract as reducing agent. Crystal structure, purity and surface morphology of the samples were examined by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis. UV-Visible diffuse reflectance (DRS) and photoluminescence (PL) spectral studies was used to analysis the optical property and band gap energy of the samples. The antibacterial activities of ZnO nanostructures (ZnO-MIM and ZnO-CCM) were tested against both gram positive (, ) and gram negative bacteria (, ) by modified disc diffusion method and observed enhanced activity against ZnO nanostructures (ZnO-MIM and ZnO-CCM) were used as the photo-catalysts for the degradation of methylene blue (MB) dye and observed enhanced efficiency of degradation of MB than that of their same bulk materials. Moreover, the synthesis method is easy with low cost and time consumable and also high yield purity products.
在本研究中，分别使用微波辐射（ZnO-MIM）和传统燃烧（ZnO-CCM）方法，以植物提取物作为还原剂成功制备了半导体氧化锌（ZnO）纳米粒子。通过粉末 X 射线衍射（XRD）、扫描电子显微镜（SEM）和能谱分析（EDX）分析了样品的晶体结构、纯度和表面形态。通过紫外-可见漫反射（DRS）和光致发光（PL）光谱研究分析了样品的光学性质和带隙能。采用改良的圆盘扩散法测试了 ZnO 纳米结构（ZnO-MIM 和 ZnO-CCM）对革兰氏阳性菌（ 和 ）和革兰氏阴性菌（ 和 ）的抗菌活性，并观察到 ZnO 纳米结构（ZnO-MIM 和 ZnO-CCM）具有增强的活性。将 ZnO 纳米结构（ZnO-MIM 和 ZnO-CCM）用作光催化剂来降解亚甲基蓝（MB）染料，观察到它们对 MB 的降解效率比其相同的块状材料更高。此外，该合成方法简单，成本低，耗时少，且产物产率高、纯度高。
