Green Synthesis of Silver and Gold Nanoparticles via Sargassum serratifolium Extract for Catalytic Reduction of Organic Dyes

The green synthesis of inorganic nanoparticles (NPs) using bio-materials has attained enormous attention in recent years due to its simple, eco-friendly, low-cost and non-toxic nature. In this work, silver (AgNPs) gold (AuNPs) were synthesized by the marine algae extract, Sargassum serratifolium (SS). characteristic studies bio-synthesized SS-AgNPs SS-AuNPs carried out ultraviolet–visible (UV–Vis) absorption spectroscopy, dynamic light scattering (DLS), high-resolution transmission electron microscope (HR-TEM), selected area diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), powder (XRD) Fourier transform infrared (FT-IR). Phytochemicals such as meroterpenoids, acted a capping agent for NPs’ growth. Ag Au NPs found have important catalytic activity degradation organic dyes, including methylene blue, rhodamine B methyl orange. reduction dyes -AuNPs followed pseudo-first order kinetics.