EFFICIENT PHOTODEGARDATION OF WASTEWATER CONTAMINANT (2,4,5-T) USING Cu/TiO2 AND Fe/TiO2 COMPOSITES AND REACTION KINETICS

Abstract

      In this paper, catalyst Cu-, Fe-doped TiO2 with various ratio were tested by reaction of photodegardation of pesticide (2,4,5-T) in water. Experience results showed that the highest photodegradation reached on 5%Cu/TiO2 and 5%Fe/TiO2. This report also supposed the photodegradion reaction of 2,4,5-T on this heterojunction of TiO2 doping Cu and Fe conform to Langmuir-Hinshelwood kinetic equation and the experiences results showed that with catalysts x%Cu/TiO2, the decrease of 2,4,5-T concentration was much faster than that with x%Fe/TiO2 and TiO2 pure (in the same doping ratio).

Keywords: Photocatalyst, catalyst kinetic, photodegradation, pesticide.