Gold nanoparticles biosynthesis: a simple route for control size using waste peel extract

The production of gold nanoparticles using the aqueous peel extract of Garcinia mangostana plant is presented in this paper. The amount of peels powder and concentration of tetrachloroaurate salt were altered to determine the effect toward the nanoparticles. When the concentration of the starting materials increased, sharper peaks were observed in UV-vis spectroscopy at the region of 530 nm. The nanoparticles produced were spherical in shape with peel extract matrix surrounding them to prevent aggregation. The average size of the nanoparticles was 47.92±4.92 nm. The presence of gold nanoparticles with face centered cubic structure was confirmed by using XRD. The nanoparticles produced were relatively stable with a stability of -18.45 mV. This paper presents a facile and simple way to produce nontoxic nanoparticles that are environmental friendly and cost effective