Synthesis and Photocatalytic Activity of Ti_xZn_yO_z Coatings

CZU 621.35

The Ti_xZn_yO_z coatings on titanium alloys in alkaline electrolyte solutions based on K₄P₂O₇ and KOH were synthesized by the anodic oxidizing method. The elemental composition and the morphology of the synthesized materials were investigated by the scanning electronic spectroscopy; the photocatalytic properties of the studied coatings were determined. It was found that the Ti_xZn_yO_z coatings on the VT1-0 alloys with 1% wt. zinc have the highest ptotocatalytic activity in the oxidation reaction of the methyl orange azo-dye under UV irradiation. The process rate constants, synergy factors, and quantum efficiency for those coatings were calculated.

Keywords: anodic oxidation, Ti_xZn_yO_z coatings, photocatalytic activity, azo-dyes.