Zinc oxide (ZnO) nanoparticles have attracted significant interest in a number of applications ranging from electronics to biomedical sciences due to their large exaction binding energy (60 meV) and wide bandgap of 3.37 eV. In the present study, we report the low-cost bacterium based “eco-friendly” efficient synthesis of ZnO nanoparticles by using the zinc-tolerant bacteria Serratia nematodiphila. The physicochemical characterization of ZnO nanoparticles was performed by employing UV-vis spectroscopy, XRD, TEM, DLS, Zeta potential, and Raman spectroscopy. The antimicrobial and antifungal studies were investigated at different concentrations using the agar well-diffusion method, whereby the microbial growth rate decreases with the increase in nanoparticle concentration. Further, photocatalytic performance studies were conducted by taking methyl orange (MO) as a reference dye.

氧化锌 (ZnO) 纳米粒子由于其高精确结合能 (60 meV) 和 3.37 eV 的宽带隙，在从电子学到生物医学科学的许多应用中引起了人们的极大兴趣。在本研究中，我们报道了利用耐锌细菌以低成本细菌为基础的“环保”高效合成氧化锌纳米粒子线虫沙雷氏菌。 ZnO 纳米粒子的物理化学表征采用紫外可见光谱、XRD、TEM、DLS、Zeta 电位和拉曼光谱进行。使用琼脂扩散法在不同浓度下进行抗菌和抗真菌研究，微生物生长速率随着纳米颗粒浓度的增加而降低。此外，以甲基橙（MO）作为参比染料进行光催化性能研究。