The size and shape of Ag nanoparticles were characterized by XRD, TEM, and SEM-EDS.  Crystalline nature of the nanoparticles in the face-centred cubic structure are confirmed by the peaks in the XRD pattern corresponding to (111), (200), (220) and (311) planes. 
XRD
Green synthesis and characterization of silver nanoparticles using Enicostemma axillare (Lam.) leaf extract.In the present article, the facile green synthesis of silver nanoparticles (AgNPs) using aqueous leaf extract of Enicostemma axillare (Lam.) has reported.  The size and shape of Ag nanoparticles were characterized by XRD, TEM, and SEM-EDS.  The mean particle diameter of silver nanoparticles was calculated from the TEM, SEM and the size of the particles was measured between 15 and 20 nm.  TEM analysis revealed the spherical shape of the particles. 
TEM
The size and shape of Ag nanoparticles were characterized by XRD, TEM, and SEM-EDS. 
SEM-EDS
The formation and stability of the reduced silver nanoparticles in the colloidal solution were monitored by UV-Vis spectrophotometer analysis. 
UV-Vis spectrophotometer
Zeta potential was confirmed by DLS study. 
DLS