چكيده لاتين :
In this research, the efficiency of ZnO and TiO2 was compared by photocatalytic degradation of Congo red azo dye. The
effects of some parameters such as pH, dye concentration and irradiation time on the degradation rate of dye solution were also
examined. In addition, the aggregation feature of Congo red was studied by using UV-Vis spectroscopy techniques. The recovery
of the ZnO catalyst was also investigated.
