Cu-MOF for effectively organic pollutants degradation and E. coli inactivation via catalytic activation of peroxymonosulfate

作者：Bai, Yang; Nie, Gongzhe; He, Yi; Li, Chao; Wang, Xianbo; Ye, Liqun^*

来源：Journal of the Taiwan Institute of Chemical Engineers, 2022, 132: 104154.

DOI：10.1016/j.jtice.2021.11.021

• MOFs
• Photo-Fenton-like
• PMS
• Dye degradation
• Sterilization
• E. coli

Background: The Fenton-like reaction is a highly potential advanced oxidation process. The photo-Fenton-like reaction formed by the combination of photocatalytic advanced oxidation process, which combines their advantages, breaks the original Fenton-like reaction rate bottleneck. @@@ Methods: In this study, an ultra-thin MOF (Cu-TCPP(BA)-MOF) with porphyrin as the ligand and copper as the metal node was synthesized via a simple one-pot method for the first time. @@@ Significant Findings: It activates Peroxymonosulfate (PMS) under visible light to degrade 10 mg/L Rhodamine B which can be completely degraded within 40 min. The pseudo -first-order rate constant of RhB is 0.9011 min(-1), being 5 folds larger than this for CuO as catalysts. ESR analysis shows that Cu-TCPP(BA)-MOF/ PMS/vis system produces a large amount of non-radical O-1(2). Also under visible light, with E. coli concentration of 107cfu/mL, it can be completely inactivated within 50 min. Dilution spreading plate method and Fluorescence spectroscopy confirmed the complete death of bacteria. In terms of mechanism, the ultra-thin MOF provides a large number of Cu2+ active sites. Under visible light, the cycle between Cu2+ and Cu+ is accelerated and the pathways that produce reactive oxygen species (ROS) is changed, thereby improving the performance of contaminant treatment and sterilization.

• 单位
  西南石油大学