TiO2 Nanoparticles Sensitized by Safranine O Dye using UV-A Light System

Abstract

Abstract This study examined the photocatalytic decolorization of safranine O dye by using TiO2 nanopowder as a photocatalyst, under illumination with using artificial UV-A-light. The behavior of this reaction was pseudo first order and the maximum of removal was 88.176% in 100 min. at 30°C. The increased of reaction temperature enhances the photoreaction, with positive ΔH that equal to 20.552 kJ mol−1 and given low activation energy reach to 22.609 kJ mol−1. The Fenton reaction was applied in aqueous solution of this dye with the using TiO2 nanopowder and given maximum photo decolorization efficiency.