Figure 1.

Characterizations (a) UV visible spectroscopy of the optimized pellet and the supernatant of AgZE; corner inset: representative image of the optimized AgZE reaction after 72 h indicating the formation of the silver nanoparticles, (b) hydrodynamic diameter (size) of AgZE, (c) charge (zeta potential) of AgZE, (d) XRD analysis of the AgZE showing its crystalline nature, (e) FTIR analysis of the ZE (top spectra) and AgZE (lower spectra) exhibiting the functional groups involved in nanoparticle synthesis, (f,g) SEM analysis of the AgZE showing its surface morphology (at magnification 5 µm for both images), and (h,i) TEM analysis of spherical shaped AgZE with minute tails. * indicates that functional groups observed in ZE extract are stretched in case of AgZE illustrating the involvement of active functional groups.