Photoelectrocatalytic degradation of reactive red 141 using FeTiO3composite doped TiO2/Ti electrodes

Abstract

Fabrication of FeTiO3-TiO2/Ti composite electrodes has been successfully carried out by the hydrothermal method and dip coating. The purpose of this study was to determine the effect of the addition of Ilmenite (FeTiO3) on TiO2/Ti plates which will be applied to degrade Reactive Red 141 by photoelectrocatalytic. The characterization results using XRD showed the success of FeTiO3 support on TiO2/Ti produced in the form of anatase crystals with peaks of 2θ = 39.88°, 52.71°, 62.71°, 64.51° and 67.54°. The SEM results show that the thin films are 10 μm, 5 μm and 2 μm while the EDX results show that the FeTiO3 dopant on the TiO2/ Ti plate is marked by marked peaks of Fe, Ti and O each with an elemental composition of 0.17%, 74.73%, and 25.10%. Characterization using FTIR showed the emergence of O-H, Ti-O, and Fe-O groups respectively with wave number absorption 3383 cm-1, 1132 cm-1, and 474 cm-1. Characterization using LSV showed that the TiO2/Ti electrode was active in UV light, while the FeTiO3-TiO2/Ti electrode was active in visible light. The degradation test against Reactive Red 141 using TiO2/Ti electrodes under UV light showed maximum performance at a concentration of 0.5 ppm with a percent degradation of 89.21% while using FeTiO3-TiO2/Ti electrodes under visible light showed maximum performance at a concentration of 0.5 ppm with 96.65% degradation.