STUDY ON PHOTOCATALYTIC ACTIVITY OF TiO2 IMMOBILIZED ON GLASS SLIDE FOR THE DEGRADATION OF METHYLENE BLUE

Abstract

            In this study, the authors have immobilized the commercial Merck TiO2 powder on glass substrates by a simple method, using the silicone 112 adhesive in order to create photocatalytic materials which are highly activated photocatalysts for the degradation of methylene blue and easily recovered and reused after water treatment. The factors affecting the photocatalytic activity such as the conditions of TiO2/glass preparation process and the dye degradation experiment have been also investigated. The results indicated that the glue drying time of 15 minutes, the glass substrate immersion time of 15 minutes, the TiO2 suspension concentration of 10 g/l and the sample drying time of 30 minutes have been the best conditions to prepare the TiO2/glass system which can operate under UVA illumination with the dye treatment efficiency of 98%. This photocatalytic TiO2/glass material could also maintain the treatment efficiency over 90% after 5 times of operation.