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Development of nanostructured silver vanadates decorated with silver nanoparticles as a novel antibacterial agent
NANOTECHNOLOGY, (2010)
DOI: 10.1088/0957-4484/21/18/185102
Аннотация
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 60 nm. The silver
nanoparticles decorating the nanowires present a diameter distribution
varying from 1 to 20 nm. 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.
