The present study investigates the efficiency of adsorption and photodegradation catalyzed by TiO2, ZnO, CdS and Co3O4 on the removal of methylene blue dye, in different pH values (4, 6, 9 and 11). The photocatalytic degradation of methylene blue dye in aqueous catalysts TiO2, ZnO, CdS and Co3O4 suspension follows apparent after 0.5 h of photodegradation a first-order kinetics. The photodegradation efficiency of methylene blue was fast in the present condition (pH 11, pH 6, pH 6 and pH 4) and slower in (pH 4, pH 11, pH 11 and pH 11) of ZnO, TiO2, CdS and Co3O4, respectively. The highest adsorption capacity as follow: TiO2 > ZnO CdS Co3O4, while the photocatalytic activity: ZnO > TiO2 > CdS > Co3O4.
No takes yet. Share an insight, caveat, or question.
Alkaim et al. (2014) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: