Abstract
Nowadays, plasma electrolytic oxidation (PEO) has become widespread as an effective method for preparation of multifunctional coatings. However, the PEO coatings have numerous pores. On the one hand, their presence restricts their broad application; on the other hand, they represent an excellent platform for post-sealing allowing creating coatings with peculiar properties. In the current work, the possibility of controllable recrystallization of ZnO/ZnAl2O4 based PEO preformed on Zn Z1 alloy into ZIF-8@PEO composite coating was demonstrated for the first time. It was found that the corrosion protection, photocatalytic and photoluminescence properties of the final coatings can be modified by varying the conditions of the post-modification process, which include the amount of the organic linker (2-methylimidazole) and treatment time. This study opens an innovative approach for the formation of multifunctional coatings.
DOI Link to Publication