摘要:ZnO photocatalysts were prepared by hydrothermal synthesis method. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). The photocatalytic activities of the prepared catalysts were evaluated by the photocatalytic degradation of coking wastewater under a xenon lamp irradiation. The results showed that the prepared products were hexagonal wurtzite structure of ZnO. Photocatalytic degradation of coking wastewater reached 69.48% in 120 minutes under the irradiation of xenon lamp light (λ=365nm).