CoFe_(2)O_(4)/ZIF-9催化过一硫酸盐降解罗丹明B

Degradation of rhodamine B by peroxymonosulfate using CoFe_(2)O_(4)/ZIF-9 as catalyst

采用共沉淀法成功合成了磁性CoFe_(2)O_(4)/ZIF-9复合材料。以罗丹明B溶液为污染物模型,通过催化剂催化过一硫酸盐评价其催化活性。催化剂筛选结果表明,复合催化剂CoFe_(2)O_(4)与ZIF-9的摩尔比为1∶5为最佳配比。实验结果表明,在20 min内,用100 mg/L的PMS和50 mg/L的催化剂对罗丹明B的去除率为99.7%。CoFe_(2)O_(4)/ZIF-9复合材料具有制备简单、催化活性高、可重复使用、回收容易等优点,是修复水污染的高效催化剂。

Magnetic CoFe_(2)O_(4)/ZIF-9 composites were successfully synthesized by co-precipitation method.The catalytic activity of CoFe 2O 4CoFe_(2)O_(4)/ZIF-9 to peroxymonosulfate was evaluated with rhodamine B as model of contaminant.The results of catalyst selection showed that the optimum ratio of CoFe_(2)O_(4) to ZIF-9 was 1∶5.The results showed that the removal rate of rhodamine B with 100 mg/L PMS and 50 mg/L catalyst was 99.7%within 20 min.The prepared CoFe_(2)O_(4)/ZIF-9 composite was a type of efficient and excellent catalyst for remediation of water pollution due to its advantages,e.g.,simple preparation,high catalytic activity,reusable and easy recovery.