Degradation of Levofloxacin hydrochloride by the Fe3O4-CuxO composite prepared using ball milling-calcination method with Oxone activation
ZHANG Wan-Peng, ZHENG Li-Qing, Yang Xin-Yu, WANG Chun-Feng, LU Tong
Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China
The Fe3O4-CuxO composite was successfully prepared by a ball milling-calcination method, and the composite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and magnetic detection. Degradation efficiency of levofloxacin hydrochloride (LVF) was evaluated by Fe3O4-CuxO composite activated oxone. Effect of calcination temperature and Fe/CuO mass ratio on catalytic performance of the composite was investigated. The degradation efficiencies of LVF over prepared composite were investigated by adjusting the reaction conditions such as the composite dosage, oxone concentration and pH. The results showed that optimum catalytic performance was obtained at calcination temperature of 300℃ and Fe/CuO mass ratio of 1:1. Repeated experiment results showed that Fe3O4-CuxO composite possessed an excellent catalytic stability. The degradation efficiency of LVF over Fe3O4-CuxO composite reached to 99.5% after 60min with the composite dosage, oxone concentration and pH of 1.4g/L, 0.6mmol/L and 11, respectively. The quenching experiment and ESR analysis demonstrated that the LVF degradation was determined by the synergistic effect of SO4-·and·OH reactive species.
张万鹏, 郑立庆, 杨鑫雨, 王春峰, 逯通. 球磨－煅烧法制备Fe3O4-CuxO及其活化Oxone降解盐酸左氧氟沙星[J]. 中国环境科学, 2020, 40(1): 143-152.
ZHANG Wan-Peng, ZHENG Li-Qing, Yang Xin-Yu, WANG Chun-Feng, LU Tong. Degradation of Levofloxacin hydrochloride by the Fe3O4-CuxO composite prepared using ball milling-calcination method with Oxone activation. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(1): 143-152.
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