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

•Ultra-thin Cu-MOF provides more sites for peroxymonosulfate activation.•The reactive oxygen species produced in the photo-Fenton-like system is almost only singlet oxygen.•Cu-MOF has good stability and good degradation dye and bactericidal properties. The Fenton-like reaction is a highly potential...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Taiwan Institute of Chemical Engineers 2022-03, Vol.132, p.104154, Article 104154
Main Authors: Bai, Yang, Nie, Gongzhe, He, Yi, Li, Chao, Wang, Xianbo, Ye, Liqun
Format: Article
Language:English
Subjects:
Dye degradation
E. coli
MOFs
Photo-Fenton-like
PMS
Sterilization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Ultra-thin Cu-MOF provides more sites for peroxymonosulfate activation.•The reactive oxygen species produced in the photo-Fenton-like system is almost only singlet oxygen.•Cu-MOF has good stability and good degradation dye and bactericidal properties. 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. 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. 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 1O2. 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. [Display omitted] .
ISSN:1876-1070
1876-1089
DOI:10.1016/j.jtice.2021.11.021