Green synthesis and Electrochemical Characterizations of Gold Nanoparticles Using Leaf Extract of Magnolia kobus

摘要

Currently, the mechanism of biological nanoparticles synthesis is not fully understood. We proposedan ecofriendly method for gold nanoparticles (AuNPs) synthesis using plant extractsandelectrochemical characterization. The reduction of the metal ions through leaf extract leading to theformation of AuNPs of fairly well-defined dimensions. This green chemistry approach toward thesynthesis of AuNPs has many advantages such as, ease with which the process can be scaled up,economic viability, etc. Leaves extract is found suitable for the green synthesis AuNPs. Averagecrystal size calculated from SEM, respectively. The particle size ranging from 100 to 300 nm and theshape of the plate and spherical structures could be controlled by changing the reaction temperatureand leaf broth concentration. The concentrations of leaves extract and metal ion are playing animportant role in the green synthesis of AuNPs. The spectroscopic characterizations from Cyclicvoltammetry (CVs), Electrochemical impedance spectroscopy (EIS) and UV-visible absorption spectrasupport the formation and stability of the biosynthesized AuNPs. This simple, efficient and rapid greensynthesis of AuNPs can be used in various biomedical and biotechnological applications. Thisenvironmentally friendly method of biological AuNPs synthesis can potentially be applied in variousproducts that directly come in contact with the human body, such as cosmetics, foods, and consumergoods, besides medical applications. More elaborate studies are required to elucidate the mechanism ofbiological nanoparticles synthesis. This low cost and greener method for development of AuNPs maybe valuable in environmental, biotechnological, electrochemical and biomedical applications.