STUDYING THE EFFECT OF POLYVINYLPYRROLIDONE (PVP) ON CHARACTERIZATION OF ZNO NANOPARTICLES SYNTHESIZED BY SOL – GEL METHOD

Abstract

In this paper, studying synthesis zinc oxide nanoparticles (ZnO NPs) via sol - gel method
and effect of adding polymer in preparation its solution. Zinc nitrate hexahydrate,
Polyvinylpyrrolidone PVP, distilled water and sodium hydroxide (NaOH) were used as
precursor materials. Crystallization behavior of the ZnO was studied by X-ray diffraction
(XRD). Nanoparticles phases can change from amorphous to wurtzite structure at the
calcination temperature (500 °C) and crystallite size by Scherrer’s formula about (21.131)
nm for samples prepared with distilled water and (20.035)nm for samples prepared with
dissolved PVP. Morphological and structural properties were investigated by scanning
electron microscopy (SEM). FT-IR spectra was indicated characteristic absorption bands of
ZnO. UV-Vis absorption spectrum was shown a typical spectrum for ZnO nanoparticles.
Finally, the results were shown the samples with dissolved PVP has smaller particles size,
less agglomeration and narrow distribution but less purity phase when compared with
samples prepared with distilled water.