采用水热法制备磁性CuO/CoFe₂O₄(CCF)复合材料,并将其用于活化过一硫酸盐(PMS)。通过SEM-EDS、XRD和XPS对CCF进行表征。以四环素(TC)为目标污染物,考察了溶液初始pH、氧化剂用量、催化剂质量浓度、共存离子对CCF活化PMS处理含TC溶液的影响。结果表明,当温度为25℃、TC的初始质量浓度为20 mg/L、CCF质量浓度为0.09 g/L、PMS初始浓度为0.3 mmol/L、初始pH为7时,30 min内去除率可达91%,且CCF具有良好的稳定性与可重复使用性;反应过程中 SO^-₄·、·OH和 ¹O₂都参与了TC的降解,其中 ¹O₂发挥了主要作用。

Magnetic CuO/CoFe₂O₄ (CCF) composites are prepared via the hydrothermal method,and used to activate the peroxymonosulfate (PMS).CCF is characterized by means of SEM-EDS,XRD and XPS.With tetracycline as a target pollutant,the influence of the initial pH of solution,oxidant dosage,catalyst dosage and co-existing ions on the treatment of tetracycline by CCF activated PMS is explored.The results show that the removal rate of tetracycline can reach to 91% within 30 min when the temperature is 25℃,the initial concentration of tetracycline is 20 mg·L^-1,the concentration of CCF is 0.09 g·L^-1,the initial concentration of PMS is 0.3 mmol·L^-1,and the initial pH is 7.In addition,CCF works with a good stability and reusability.SO^-₄·,·OH,and ¹O₂ are all involved in the reaction process of degrading tetracycline,and ¹O₂ plays a dominant role.

周书葵(1965-),男,硕士,教授,研究方向为水处理理论与技术,zhoushukui@usc.edu.cn