【摘要】 室温条件下制备了金属钴有机骨架材料ZIF-67，并采用扫描电子显微镜、X射线衍射光谱和傅里叶变换红外光谱进行表征。将ZIF-67用于活化过一硫酸盐（peroxymonosulfate,PMS）去除水溶液中左氧氟沙星（levofloxacin,LEV），研究了不同的LEV初始浓度、催化剂剂量、PMS浓度以及初始pH值对去除LEV的影响。结果表明：ZIF-67能有效活化PMS降解水体中有机污染物LEV，在中性pH条件下，30 min内PMS/ZIF-67体系可降解92.0%的LEV。自由基淬灭实验和电子顺磁共振波谱实验表明，该体系中起决定性作用的活性氧物质为¹O₂。另外，水基质中Cl^-和CO₃^2-对该体系中LEV的降解有较强的抑制作用，而NO₃^-、HPO₄^2-以及腐殖酸对LEV的降解没有影响。研究表明MOF材料作为PMS催化剂在水的深度处理中具有潜在的应用前景。更多还原

【Abstract】 The metal-cobalt organic framework,ZIF-67 was prepared at room temperature and charaterized by the scanning electron microscope,X-ray diffraction,and Fourier transform infrared spectroscopy. ZIF-67 was used for levofloxacin（LEV）degradation by activating peroxymonosulfate（PMS）. The effect of different factors on LEV removal was explored including initial LEV concentration,catalyst dosage,PMS concentration and initial pH. The experiments showed that ZIF-67 could effectively activate PMS for LEV degradation in aqueous bodies,under neutral conditions,the LEV degradation rate reached 92.0% in the PMS/ZIF-67 system within 30 minutes. Radical quenching experiments and Electron paramagnetic resonance spectrometer tests proved that ¹O₂ played dominanted role in this system. Besides,in the water matrix,Cl^- and CO₃^2- had strong inhibition for LEV degradation in this system,whereas NO₃^-,HPO₄^2-,and humic acid（HA）had no effect on LEV degradation. Studies showed that MOFs,as an effective catalyst for PMS,have potential applications for the deep treatment of water.更多还原