Adiantum philippense L. Frond Assisted Rapid Green Synthesis of Gold and Silver Nanoparticles

Figure 4

SPR at optimum conditions. For Au, original extract at pH 11 and 5 mM tetrachloroauric acid was kept for 10 min. For Ag, original extract at pH 12 and 9 mM silver nitrate was kept for 10 min.