Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Santiago de Querétaro, Qro 76230, México.
Unidad de Microbiología Básica y Aplicada, Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Santiago de Querétaro, Qro 76140, México.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2021;56(7):762-768. doi: 10.1080/10934529.2021.1925492. Epub 2021 May 17.
This research aims to provide an alternative eco-friendly way to obtain silver species and assess their bactericidal activity. This study reports the synthesis of AgO nanoparticles and Ag nanoparticles reduced with a green synthesis method, using a low-cost and commercial extract. The crystalline phases of Ag and AgO nanoparticles were analyzed by X-ray diffraction. The oxidation states for both species were determined by X-ray photoelectron spectroscopy. The optical properties of the material were studied through optical absorption, which resulted in well-defined band centered at 545 nm. This result is attributed to the morphology and size of the silver nanoparticles. In addition, antibacterial tests were performed on AgNPs biosynthesized with with the Kirby-Bauer protocol on Gram-negative and Gram-positive bacteria and , respectively. Moreover, antifungal tests were performed with various species from .
本研究旨在提供一种环保的方法来获得银物种，并评估它们的杀菌活性。本研究报告了使用低成本和商业 提取物通过绿色合成方法合成 AgO 纳米粒子和 Ag 纳米粒子。通过 X 射线衍射分析了 Ag 和 AgO 纳米粒子的晶相。通过 X 射线光电子能谱确定了两种物质的氧化态。通过光学吸收研究了材料的光学性质，结果在 545nm 处出现了很好的特征带。这一结果归因于银纳米粒子的形态和尺寸。此外，还分别使用 对革兰氏阴性菌 和革兰氏阳性菌 进行了基于 Kirby-Bauer 方案的 AgNPs 生物合成的抑菌试验，并且，还对 属的各种真菌进行了抗真菌试验。
