摘要：In this work, catalyst Cadmium sulfide (CdS) with high photo activity driven by visible light were prepared via the slow precipitation-water thermosetting method. Also, this CdS catalyst was characterized by TG, XRD, UV-Vis means and, its optical performance was evaluated by the photodegradation of antibiotics Sulfameter. The results show that this self-made CdS catalyst has the hexagonal crystal structure with high quality and the absorption spectrum is in the range of 250-600 nm. Comparing with the commercially available CdS, the self-made CdS catalyst is more responsive in the visible area. The photo degradation rate of the Sulfameter was above 80% with the self-made CdS, whereas the degradation rate was only about 33% with the commercial CdS. Moreover, based on HPLC/ESI-MS analysis and density functional theory, the photo-degradation pathway of Sulfame- ter was deduced, and main reactions as ammonia oxidation, splitting decomposition, and open loop, etc occurred during the photo-degradation of Sul- fameter. In the summary, this visible-light-driven catalyst CdS was effective for the degradation of antibiotics Sulfameter, and the results could be valuable for the assessment of antibiotics transformation in the water body.
