Abstract This research has revealed the promising, environmentally friendly and one-step modification of ZnO nanoparticles (NPs) based on radiation-assisted method for antimicrobial applications. Commercially available ZnO NPs were modified in aqueous solution of silver nitrate in the presence of the artificial radiation by using different sources of radiation such as high-power UV/Vis LED units and radioactive isotope 60Co. New nanocomposites were characterized by XRD, TEM, HRTEM, HRSTEM with 3D element mapping, DRS and PL spectrometry. The results showed that all samples were composed of Ag@AgCl NPs connected with ZnO NPs via stable heterojunction. The use of different radiation had significant influence on the prepared composites and the final antimicrobial activity against Gram-negative Escherichia coli, Pseudomonas aeruginosa, and Gram-positive Streptococcus salivarius, Staphylococcus aureus bacteria strains and yeast Candida albicans. The possible influence of irradiation on the final physiochemical and antimicrobial activity of Ag@AgCl/ZnO nanocomposites was proposed. It was found that the Ag@AgCl/ZnO irradiated by γ- and β- -radiation exhibited the highest antimicrobial activity.

中文翻译：

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包括放射性同位素 60Co 在内的不同辐射源合成 Ag@AgCl/ZnO：理化和抗菌研究

摘要 本研究揭示了基于辐射辅助方法对 ZnO 纳米粒子 (NPs) 进行有前景、环保和一步改性的抗菌应用。在人工辐射的存在下，通过使用不同的辐射源，如高功率 UV/Vis LED 单元和放射性同位素 60Co，在硝酸银水溶液中对市售的 ZnO NPs 进行改性。新的纳米复合材料通过 XRD、TEM、HRTEM、具有 3D 元素映射的 HRSTEM、DRS 和 PL 光谱法进行表征。结果表明，所有样品均由通过稳定异质结与 ZnO NPs 连接的 Ag@AgCl NPs 组成。不同辐射的使用对制备的复合材料和最终对革兰氏阴性大肠杆菌、铜绿假单胞菌、和革兰氏阳性唾液链球菌、金黄色葡萄球菌菌株和白色念珠菌。提出了辐照对 Ag@AgCl/ZnO 纳米复合材料的最终理化和抗菌活性的可能影响。结果表明，经γ-和β-辐射照射的Ag@AgCl/ZnO表现出最高的抗菌活性。