Characterization of AgNPs and AgNPs-PVP
Optical absorbance of AgNPs and AgNPs-PVP was monitored using a UV–Vis Spectrophotometer (Infinite® M1000 PRO) as a function of wavelength in the range from 300 to 500 nm. The incorporation of PVP was proven by a Bruker Vertex V80V Vacuum Fourier Transform Infrared Spectroscopy system (FTIR) in the range of 600-2100 cm-1. The structures and sizes of nanoparticles were observed by 200 kV field emission Transmission Electron Microscopy (FEI F20 TEM/STEM) and Zetasizer (Nano 90) Dynamic Light Scattering (DLS). TEM showed images of particle size and shape on dried carbon-coated copper grid, and DLS gave the particle size in nanoparticle suspension solution.