Study on the synergistic effect of Cu(Ⅱ) and β-cyclodextrin in resin for efficient degradation of tetracycline by heterogeneous Fenton-like reaction

Background Tetracycline has been widely used to the treatment of diseases caused by bacteria. However, it was inevitably discharged into the water environment during the application process. How to effectively remove Tetracycline is a topic worth studying. Methods Herein, a poly (chloromethyl styrene) based Cu(Ⅱ) and β-CD-doped resin named PS@PPDI-CDP-Cu(Ⅱ) made by a facile adsorption treatment was reported. The structure of PS@PPDI-CDP-Cu(Ⅱ) were characterized by SEM, XPS, and BET. The concentrate of Tetracycline was measured by a UV-visible spectrophotometer. Significant findings It was found that a higher catalytic ability was observed for PS@PPDI-CDP-Cu(Ⅱ) with a rate constant of 0.21 min −1 than Cu(Ⅱ) (0.05 min −1 ) due to the synergistic effect between Cu(Ⅱ) and β-CD, the whole progress was activated by NH 2 OH to form a more integral mechanism than that without NH 2 OH. Tetracycline could be efficiently degraded at a wide pH range from 3.24 to 9.25, PS@PPDI-CDP-Cu(Ⅱ) exhibited an excellent removal efficiency of 100% within 25 min and presented outstanding degradation efficiency over 6 reusable cycles. Compared with our previous work, PS@PPDI-CDP-Cu(Ⅱ) has the advantages of simple synthesis step, and the introduction of synergistic effect between Cu(Ⅱ) and β-CD makes it a better performance of Tetracycline degradation than PCMS@PPDI-CD.