Biosynthesis of Silver/Silver Oxide Nanoparticles by Aqueous Leaves Extract of Mentha Piperita: the Effect of Silver Nitrate Concentration Non the Product Type

Abstract

In this study, green synthesis of silver/ silver oxide nanoparticles (Ag/Ag2O NPs) was achieved by bio-reduction of silver nitrate using Mentha Piperita plant leaves extract. The effect of different silver nitrate concentrations on the nanoparticles’ silver formation was studied. The obtained nanoparticles were characterized by UV-Vis, FT-IR, XRD and SEM techniques are used for this purpose. UV-Vi’s spectra showed maximum absorption in the range of 253–300 nm related to the silver. FTIR spectra exhibit a weak peak at 565 cm-1 attributed to silver NPs vibration, confirming the nanoparticles formation. The X-Ray Diffraction (XRD) analysis confirmed the crystalline nature of (Ag/Ag2O NPs) with an average size ranged in 31–42 nm. SEM showed that the green synthesizing silver nanoparticles having in general as cubical shape. As a result, the use of peppermint leaves extract offers its ease, fast, low cost and friendly to the environment compared to other methods.