Journal of the Serbian Chemical Society 2014 Volume 79, Issue 11, Pages: 1433-1443
https://doi.org/10.2298/JSC140520077S
Full text ( 798 KB)
Hydro- and solvothermally-prepared ZnO and its catalytic effect on photodegradation of reactive orange 16 dye
Simović Bojana (Institute for Multidisciplinary Research, Belgrade)
Golubović Aleksandar (Institute of Physics, Belgrade)
Veljković Ivana (The Netherlands Organization for Applied Scientific Research - TNO, Eindhoven, The Netherlands)
Poleti Dejan (Faculty of Technology and Metallurgy, Department of General and Inorganic Chemistry, Belgrade)
Zdravković Jelena (Faculty of Technology and Metallurgy, Innovation Centre, Belgrade)
Mijin Dušan (Faculty of Technology and Metallurgy, Department of General and Inorganic Chemistry, Belgrade)
Bjelajac Anđelika (Faculty of Technology and Metallurgy, Innovation Centre, Belgrade)
In this work, zinc oxide powders were obtained by two different techniques:
hydro- and solvothermal synthesis starting from Zn(NO3)2 and Zn(CH3COO)2,
respectively. The influence of synthetic procedure on the structural,
microstructural, thermal and photocatalytic properties of the prepared ZnO
powders was investigated. Both ZnO samples were further annealed at moderate
conditions (300°C) to avoid grain growth and to remove traces of impurities.
In all four cases a single-phase hexagonal ZnO was confirmed by X-ray powder
diffraction. The morphology of prepared ZnO powders was different and it
varied from rounded nanograins to microrods. All prepared samples showed
higher photocatalytic efficiency in degradation of textile azo-dye Reactive
Orange 16(RO16) than the commercial ZnO. In addition, the non-annealed
samples had better photocatalytic properties than the commercial Degussa P25
TiO2 powder.
Keywords: synthesis, ZnO powders, Reactive Orange 16, photocatalysis
Projekat Ministarstva nauke Republike Srbije, br. III45007, br.
ON171032 i br. ON172013