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Synthesis of silver nanoparticles with remediative potential using discarded yerba mate: an eco-friendly approach

Abstract:

Silver nanoparticles (Ag-NPs) applications are strongly dependent on their stability against aggregation. In the present work, environmentally-friendly Ag-NPs were synthesized by a simple and efficient procedure, using discarded yerba mate extract (DYME) as a reducing and capping agent. The Ag-NPs thus obtained (DYME-Ag-NPs) were spectroscopically characterized by ultraviolet-visible (UV-Vis) spectrophotometry, dynamic light scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). These NPs were also evaluated for their adsorbent capacity through the adsorption isotherms using three organic substances, as well as for their antimicrobial properties on two bacterial strains. DYME-Ag-NPs were mostly spherical, monodispersed, with an average size of 24.07 ± 3.00 nm (DLS), and proved to be stable for 70 days without any noticeable …