THE USE OF Amaranthus spinosus IN THE SYNTHESIS OF SILVER NANOPARTICLES AND THEIR APPLICATION IN THE DETECTION OF GLUCOSE

Abstract

Because of biologically active plant secondary metabolites that aid in green synthesis, as well as their specific biological applications, biosynthesized nanoparticles are gaining popularity. This paper describes the electrochemical characteristics and electrocatalytic activity of silver nanoparticles made using Amaranthus spinosus aqueous leaf extract for glucose detection. In the biosynthesis of silver nanoparticles, an aqueous leaf extract of Amaranthus spinosus was utilized as a reducing and capping agent. UV–visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray studies were used to characterize the biosynthesized Amaranthus spinosus silver nanoparticles. The electrochemical properties reveal the redox process of Ag+ to Ag0, while the electrocatalytic activity towards nonenzymatic glucose oxidation occurs at a lower positive potential, 200 mV, implying that the silver nanoparticles synthesized by Amaranthus spinosus could be used as a candidate for glucose detection.