Synthesis of ZnO with controlled preparation parameters and study on the ultraviolet photodegradation of Rhodamine B

Rhodamine B dye wastewater is a harmful pollutant to the environment and human health. Nano zinc oxide can achieve good degradation effects through ultraviolet photodegradation. Based on this, this report characterizes the samples through SEM and XRD, and investigates the influence of zinc oxide preparation on the degradation rate of Rhodamine B from four aspects: catalyst calcination temperature, catalyst calcination time, different catalyst mass concentrations, and different Rhodamine B solution mass concentrations. The research results show that when the calcination temperature is 500°C, the dosage of the sample in the photocatalytic process is 4 g/L, and the initial concentration of Rhodamine B is 10 mg/L, the photocatalytic degradation effect is the best, and the degradation rate can reach 100% after 1 h.