PREPARATION AND CHARACTERIZATION OF ZnO NANOPARTICLES BY SOLVENT FREE METHOD

Authors

  • Savka Janković University of Banja Luka, Faculty of Natural Sciences and Mathematics, Chemistry Department, Mladena Stojanovića 2, Banja Luka, Republic of Srpska
  • Dragana Milisavić University of Banja Luka, Faculty of Natural Sciences and Mathematics, Chemistry Department, Mladena Stojanovića 2, Banja Luka, Republic of Srpska
  • Tanja Okolić University of Banja Luka, Faculty of Natural Sciences and Mathematics, Chemistry Department, Mladena Stojanovića 2, Banja Luka, Republic of Srpska
  • Dijana Jelić University of Banja Luka, Faculty of Medicine, Pharmacy Department, Save Mrkalja 14, Banja Luka, Republic of Srpska

DOI:

https://doi.org/10.7251/COMEN1801048J

Abstract

ZnO nanoparticles have numerous applications as photo catalysts, gas
sensors, UV lasers, as optoelectronic and microelectronic devices or in cosmetic field. ZnO
nanoparticles were synthesized by solvent free method using zinc nitrate hexahydrate as
precursor and glycerol as dispersant, without solvent present. This method proved to be
very simple, economic and ecofriendly. Zinc nitrate and glycerol were mixed in different
ratio in order to avoid and overcome a possibility of agglomeration. Characterization of
samples was performed by UV/VIS and FTIR spectrophotometry. The strongest absorption
appeared at wavelength 206 nm. Using combination of UV/VIS spectrophotometry and
hyperbolic band model (HBM) particles size of ZnO particles were evaluated to 2.06 nm.
Additionally, using Tauc plot, a band gap energy was determined. Band gap energy of ZnO
nanoparticles amounted to 5.00 eV. IR spectrum showed existence of ZnO in interval 600-
400 cm-1.

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Published

2021-10-26

Issue

Vol. 9 No. 1 (2018): Contemporary Materials IX-1

Section

Articles