▎ 摘　　要

Ag2O/CdO/CeO2 nanoparticles were successfully synthesized. The as-prepared nanoparticles were deposited on reduced graphene oxide via hydrothermal method. The as-prepared nanocomposites (Ag2O/CdO/CeO2/rGO) were characterized by FTIR, DRS, XRD, FESEM, EDS and TEM. The sonocatalytic performance of the obtained products was analyzed by the degradation of sulfasalazine (SSZ), diclofenac and phenol under ultrasonic irradiation. Based on results, the removal efficiency of SSZ as a model of the organic pollutant has remarkably increased from 50% to75%, 95% in the case of H2O2 and K2S2O8, respectively. Optimum degradation efficiency of SSZ, diclofenac and phenol are (95%), (82%) and (80%), respectively, obtained using 5% Ag, in the presenceK(2)S(2)O(8) and ultrasound irradiation. ROS generation results suggest the Ag2O/CdO/CeO2/rGO was much more effective sonocatalyst than CdO/CeO2/rGO, rGO and Ag2O/CdO/CeO2 nanoparticles. The hydroxyl radical and super oxide radical had key role in the degradation process. The results showed excellent reusability and stability of the synthesized nanocomposites.