Production of Gold Nanoparticles (AuNPs) from Chloroaurate Ions Using Aqueous Extract Of Air-Dried Premna obtusifulia Leaves.

Gold nanoparticles (AuNPs) were synthesized easily using bottom-up method in aqueous extract of air-dried P. obtusifulia R. Br. leaves without elevated temperature. The appearance of surface plasmon resonance (SPR) peak at 549.5 nm in UV-Vis spectrometry analysis give the early evidence of the AuNPs in the solution. The particles shape was in spherical form and the average size of obtaining amps is 90, 25 nm. The AuNPs was stable for several days and also sensitive toward Pb(OAc)2 solution