Photocatalytic Degradation of Rhodamine B by Cuprous Oxide

Cuprous oxide( Cu2O) was successfully prepared by the method of reduction in aqueous at room temperature. All the powders were characterized by X-rays diffraction( XRD) and scanning electron microscopy( SEM). The effect of different factors on the degradation was investigated. The best reaction conditions were found out. The photocatalytic degradation of rhodamine B by Cu2O under simulated natural light irradiation was investigated. The results demonstrated that initial concentration of rhodamine B is 10 mg / L,catalyst dosage is 0. 38 g / L and the pH is 5. 2,the degradation ratio of rhodamine B is as high as 96. 5% after 30 minutes simulated natural light irradiation.