Biosynthèse, caractérisation et activité antibactérienne de nanoparticules d’argent à base des plantes médicinales

Abstract

EDF..In this work, the preparation of silver nanoparticles (AgNPs) using extracts of two medicinal plants, in particular Alpinia officinarum (E1) and Teucrium polium (E2), has been investigated using green synthesis as an environmentally friendly approach, aiming to minimize the use of toxic chemicals in the preparation of nanomaterials. First, plant extracts are prepared and then mixed with a silver nitrate solution to obtain nanoparticles. The prepared samples are then characterized using several techniques such as UV-Vis. spectroscopy, FT-IR, and powder X-ray diffraction (XRD). Finally, the efficacy of the nanoparticles as antibacterial agents was evaluated against pathogenic strains, while their original electrochemical behavior was elucidated by cyclic voltammetry (CV), highlighting a charge transfer-controlled semi-fast process for the (E1) and (E2).