Sonophotocatalytic Degradation of Methyl Orange using TiO2 Photo-catalysts Prepared under Different Experimental Conditions

The sonochemical oxidation process has been found to be a potentially useful technique for the degradation of organic pollutants in an aqueous environment. In this technique, free radicals are generated during the violent collapse of acoustic cavitation bubbles. These free radicals react with organic pollutant molecules in several reaction pathways and reactive zones. The sonochemical process is often combined with other widely known advanced oxidation processes, such as, ozonation, photocatalysis and Fenton and photoFenton reactions. In this study, sonochemical technique is combined with photocatalysis for the degradation of an organic dye in aqueous environment. A number of photocatalysts were synthesized using conventional technique for use in sonophotocatalysis experiments.