Laser Physics Division, Applied Science Department, University of Technology, Baghdad, Iraq.
Biotechnology Division, Applied Science Department, University of Technology, Baghdad, Iraq.
IET Nanobiotechnol. 2018 Sep;12(6):781-786. doi: 10.1049/iet-nbt.2017.0231.
In this study, the authors reported the first synthesis process of silver iodide (AgI) nanoparticles (NPs) by pulsed laser ablation of the AgI target in deionised distilled water. The optical and structural properties of AgI NPs were investigated by using UV-vis absorption, X-ray diffraction, scanning electron microscope (SEM), energy dispersive X-ray, Fourier transform infrared spectroscopy, and transmission electron microscope (TEM). The optical data showed the presence of plasmon peak at 434 nm and the optical bandgap was found to be 2.6 eV at room temperature. SEM results confirm the agglomeration and aggregation of synthesised AgI NPs. TEM investigation showed that AgI NPs have a spherical shape and the average particle size was around 20 nm. The particle size distribution was the Gaussian type. The results showed that the synthesised AgI NPs have antibacterial activities against both bacterial strains and the activities were more potent against gram-negative bacteria.
在这项研究中，作者报告了首次通过在去离子蒸馏水中脉冲激光烧蚀 AgI 靶材来合成碘化银（AgI）纳米颗粒（NPs）的过程。通过使用紫外-可见吸收、X 射线衍射、扫描电子显微镜（SEM）、能谱、傅里叶变换红外光谱和透射电子显微镜（TEM）研究了 AgI NPs 的光学和结构性质。光学数据显示在 434nm 处存在等离子体峰，并且在室温下发现光学带隙为 2.6eV。SEM 结果证实了所合成的 AgI NPs 的团聚和聚集。TEM 研究表明，AgI NPs 呈球形，平均粒径约为 20nm。粒径分布呈高斯型。结果表明，所合成的 AgI NPs 对两种细菌菌株均具有抗菌活性，并且对革兰氏阴性菌的活性更强。
