非均相铜基类Fenton催化剂的制备及其降解环丙沙星

Preparation of heterogeneous copper Fenton catalyst and its degradation of ciprofloxacin

针对传统类Fenton法需在低pH范围内反应、催化剂难分离等问题,提出采用水热合成法制备了以铜基为核心的非均相类Fenton催化剂Cu/Co,并对其进行表征。实验结果表明:制备的催化剂Cu/Co主要组分是CuO,对环丙沙星(CIP)具有较高的催化活性和重复利用性。在最优条件下,CIP的降解率达到94.7%。所制备的催化剂Cu/Co能够在pH为4.0~8.0的条件下保持较好的反应活性,且催化剂Cu/Co-500重复使用5次后,对CIP的降解率依旧能达到81.7%,具有良好的循环使用性。

The traditional Fenton method has disadvantages,such as reaction in a low pH range and difficult separation of catalyst. In this study,a heterogeneous Fenton-like catalyst Cu/Co with copper as the core was prepared by hydrothermal synthesis method and characterized. The experimental results showed that the main components of the prepared catalyst Cu/Co were CuO,which had high catalytic activity and reusability for ciprofloxacin. Under the optimal conditions,the degradation rate of ciprofloxacin reached 94.7%. The prepared catalyst Cu/Co could maintain good reaction activity at pH 4.0-8.0,and the catalyst could still catalyze and degrade ciprofloxacin to reach a removal rate of 81.7% after being reused for 5 times,thus having good recycling property.