Electrochemical Synthesis of Titania-Containing Composites with a Metallic Matrix for Photochemical Degradation of Organic Pollutants in Wastewater

Abstract

Immobilized TiO 2 photocatalyst is considered as a promising approach to fabricate high-performance and available materials for wastewater treatment. The immobilization of TiO 2 particles can be performed by various manufacturing techniques, the electrochemical deposition being the most convenient and tunable method. This chapter surveyed the literature data on electrochemical synthesis of TiO 2 -containing composites with photocatalytic performance. The electrochemical deposition and characterization of iron/titania composite coatings were considered in detail. The content of TiO 2 dispersed phase in the fabricated composites was up to about 5 wt.%. The electrodeposited Fe-TiO 2 composites exhibited photocatalytic properties regarding the photochemical degradation of methylene blue and methyl orange organic molecules in water solution. The apparent rate constants of photochemical degradation of the examined organic dyes on the electrodeposited Fe-TiO 2 photocatalyst were in the range of (1.8-12.8) × 10 −3 min −1 .