Study the Photodegradation of Aniline Blue dye in Aqueous Phase by using Different Photocatalysts

Abstract-- This study involves the photocatalytic degradation of Aniline blue(AB) dye, employing heterogeneous photocatalytic process. Photocatalytic activity of different semiconductors such as zinc oxide (ZnO),zinc sulfide (ZnS) and Tin dioxide (SnO2) has been investigated. An attempt has been made to study the effect of process parameters through amount of catalyst, concentration of dye, pH of dye solution and temperature on photocatalytic degradation of AB solution. The experiments were carried out by varying pH (2-12), amount of catalyst (0.05–1.5 g), initial concentration of dye (25–100ppm) and temperature range(293-323)K. The optimum catalyst dose was found to be ( 0.1,0.5 g and 1) g\L by using ZnO,ZnS and SnO2, respectively. In the case of ZnO and SnO2, maximum rate of photoreaction of AB solution was observed in acidic medium at pH 4, whereas the degradation o