ZnO Particles Modified MgAl Coatings with Improved Photocatalytic Activity Formed by Plasma Electrolytic Oxidation of AZ31 Magnesium Alloy in Aluminate Electrolyte

MgAl and MgAl/ZnO coatings were prepared by plasma electrolytic oxidation (PEO) of AZ31 magnesium alloy in aluminate electrolyte (5 g/L NaAlO2) without with addition ZnO particles various concentrations. The coating was partially crystallized contained MgO MgAl2O4 phases. to had no significant effect on the surface morphology formed coatings, while Zn content increased particle X-ray diffraction confirmed incorporation coatings. photodegradation methyl orange (10 cm3 8 mg/L) used measure photocatalytic activity (PA) PA after h irradiation around 58%, concentrations 4 g/L, 12 69%, 86%, 97%, respectively.