Fig. 8From: Preparation of ZnO Photocatalyst for the Efficient and Rapid Photocatalytic Degradation of Azo DyesEffect of pH on the properties of ZnO prepared with the complexation ratio of 4:1 and calcination temperature of 400 °C (10 min irradiation time, 30 mg/L initial concentration of solution, and 0.2 g/L ZnO)Back to article page