GREEN SYNTHESIS OF SILVER NANOPARTICLES USING ENVIRONMENTALLY FRIENDLY REDUCING AGENTS

Tóm tắt

In this study, silver nanoparticles were synthesized via a green electrochemical method using three environmentally friendly reducing agents: sodium citrate, oleic acid, and an extract of Houttuynia cordata. The synthesis employed high-purity silver electrodes in aqueous solutions, avoiding toxic chemical precursors. The resulting  were comprehensively characterized using UV–Vis spectroscopy, X-ray diffraction, scanning electron microscopy, dynamic light scattering (DLS), and zeta potential analysis. UV–Vis and X-ray confirmed successful nanoparticle formation with a face-centered cubic structure.  Silver nanoparticles synthesized using  Oleic acid exhibited the highest crystallinity, while those synthesized with Houttuynia cordata showed the largest average particle size due to the influence of plant-derived organic compounds. The sample synthesized using sodium citrate demonstrated the greatest colloidal stability, with a zeta potential of –21.2 mV, attributed to efficient surface capping by citrate ions. These findings highlight the significant role of reducing agent selection in tuning the physicochemical properties of nano particles and support the potential of green electrochemical synthesis for scalable, sustainable nanomaterial production.