Three kinds of CeO2/ZnO nanocomposites were successfully prepared by the hydrothermal method. The morphology and composition tests show that the CeO2 cubic nanoparticles with a side length of about 10 nm are uniformly loaded on the irregular ZnO nanosheets. Under ultraviolet light irradiation, CeO2/ZnO (1:5) has the best photocatalytic performance and the degradation efficiency of tetracycline (TC) is 97.2% within 140 min. In addition, with CeO2/ZnO (1:5) as photocatalyst, the degradation rate of TC only decreased by 1.3% after 6 cycles, indicating that CeO2/ZnO (1:5) has excellent photocatalytic stability. Therefore, the CeO2/ZnO (1:5) nanocomposite has a bright future for industrial application in wastewater treatment.
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