Synthesis of Silver nanoparticles (AgNPs) with Antibacterial Activity
Departamento de Facultad de Ciencias Básicas, Grapo de Materials Nanoestracturados y Biomodelación, MATBIOM, Universidad de Medellín, Colombia
Facultad de Ingenierías, Grupo de Investigaciones y Mediciones Ambientales - GEMA, Universidad de Medellín, Medellín, Colombia
Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia
Centro de Investigación, Innovación y Desarrollo de Materiales - CIDEMAT, Universidad de Antioquia UdeA, Calle 70 No 52-21, Medellín, Colombia
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The synthesis of nanomaterials is currently one of the most active in nanoscience branches; especially those help improve the human quality life. Silver nanoparticles (AgNPs) are an example of this as it is known to have inhibitory and bactericidal effects. In this work, we report the synthesis of silver nanoparticles by chemical reduction method of silver nitrate (AgNO3) from aqueous solution, using a mix of polivinyl pyrrolidone (PVP) - Aloe Vera as reducing agent and for stabilization and control of particle size. Silver nanoparticles obtained were characterized by Scanning Electron Microscopy (SEM), UV-visible spectroscopy and measurements using Zetasizer Nano ZS were applied to size estimation. The existence of surface plasmon resonance peak at λmax ∼ 420 nm is evidence of silver nanoparticles formation. It was possible to standardize an appropriate protocol for the evaluation of bactericidal activity of the nanoparticles, for mesophilic microorganisms. Bactericidal activity above 90% against these kinds of bacteria was demonstrated. © Published under licence by IOP Publishing Ltd.
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