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Development of nanostructured silver vanadates decorated with silver nanoparticles as a novel antibacterial agent

机译：以纳米银为装饰剂的纳米结构钒酸银的开发

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In this work we report the synthesis, characterization and application of silver vanadate nanowires decorated with silver nanoparticles as a novel antibacterial agent. These hybrid materials were synthesized by a precipitation reaction of ammonium vanadate and silver nitrate followed by hydrothermal treatment. The silver vanadate nanowires have lengths of the order of microns and diameters around 60nm. The silver nanoparticles decorating the nanowires present a diameter distribution varying from 1 to 20nm. The influence of the pH of the reaction medium on the chemical structure and morphology of silver vanadates was studied and we found that synthesis performed at pH 5.5-6.0 led to silver vanadate nanowires with a higher morphological yield. The antimicrobial activity of these materials was evaluated against three strains of Staphylococcus aureus and very promising results were found. The minimum growth inhibiting concentration value against a MRSA strain was found to be ten folds lower than for the antibiotic oxacillin.
机译：在这项工作中，我们报告了装饰有银纳米颗粒作为新型抗菌剂的钒酸银纳米线的合成，表征和应用。这些杂化材料是通过钒酸铵和硝酸银的沉淀反应，然后进行水热处理而合成的。钒酸银纳米线的长度约为微米，直径约为60nm。装饰纳米线的银纳米颗粒的直径分布为1至20nm。研究了反应介质的pH值对钒酸银化学结构和形貌的影响，我们发现在pH 5.5-6.0下进行的合成导致钒酸银纳米线的形貌产率更高。评价了这些材料对三种金黄色葡萄球菌的抗菌活性，发现了非常有希望的结果。发现针对MRSA菌株的最小生长抑制浓度值比抗生素奥沙西林低十倍。

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