Fig. 11From: Preparation of ZnO Photocatalyst for the Efficient and Rapid Photocatalytic Degradation of Azo DyesRemoval ratio of MO, CR, and DB38 over ZnO in the presence of various scavengers (30 min irradiation time, 30 mg/L initial concentration of solution, 0.2 g/L ZnO, and pH = 6.8)Back to article page