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.