Green Synthesis of Silver Nanoparticles Using Emblica officinalis and Their Role in Mercury (II) Chloride Detoxification

In this study, silver nanoparticles (AgNPs) were successfully synthesized using an aqueous extract of Emblica officinalis, serving as a green, sustainable reducing and stabilizing agent. UV-Visible spectrophotometric analysis confirmed the formation of AgNPs, with a distinct surface plasmon resonance (SPR) peak at 382.04 nm, indicative of well-dispersed, spherical nanoparticles with minimal aggregation. The biosynthesized AgNPs were subsequently utilized to evaluate their potential in degrading mercury(II) chloride (HgCl2). Time-dependent UV-Vis analysis revealed a gradual and significant decline in the characteristic absorbance peaks of HgCl2, particularly at 302 nm, over a 48-hour period. This indicates effective degradation and possible reduction of mercury ions, facilitated by the catalytic and adsorptive properties of the nanoparticles. The findings demonstrate the dual functionality of E. officinalis-mediated AgNPs as both nanocatalysts and sorbents, offering a promising, eco-friendly approach for heavy metal remediation in aquatic environments.