Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/1325
Title: ZnO Particles Modified MgAl Coatings with Improved Photocatalytic Activity Formed by Plasma Electrolytic Oxidation of AZ31 Magnesium Alloy in Aluminate Electrolyte
Authors: Stojadinović, Stevan 
Radić, Nenad
Vasilić, Rastko 
Keywords: magnesium alloy;MgAl O 2 3;MgO;photocatalysis;plasma electrolytic oxidation
Issue Date: 1-Dec-2022
Journal: Catalysts
Abstract: 
MgAl and MgAl/ZnO coatings were prepared by plasma electrolytic oxidation (PEO) of AZ31 magnesium alloy in aluminate electrolyte (5 g/L NaAlO2) without and with addition of ZnO particles in various concentrations. The MgAl coating was partially crystallized and contained MgO and MgAl2O4 phases. The addition of ZnO particles to aluminate electrolyte had no significant effect on the surface morphology of formed coatings, while the Zn content increased with ZnO particle concentrations. X-ray diffraction confirmed the incorporation of ZnO particles in the coatings. The photodegradation of methyl orange (10 cm3 of 8 mg/L) was used to measure the photocatalytic activity (PA) of MgAl and MgAl/ZnO coatings. The PA of MgAl coating after 8 h of irradiation was around 58%, while the PA of MgAl/ZnO coatings formed in aluminate electrolyte with the addition of ZnO particles in concentrations of 4 g/L, 8 g/L, and 12 g/L were around 69%, 86%, and 97%, respectively.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/1325
DOI: 10.3390/catal12121503
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