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Photocatalytic production of H2O2 and its in situ sterilization over Zn-based ZIFs materials.
Photocatalytic production of H2O2 and its in situ sterilization over Zn-based ZIFs materials.
- Source :
- Journal of Environmental Chemical Engineering; Oct2023, Vol. 11 Issue 5, pN.PAG-N.PAG, 1p
- Publication Year :
- 2023
-
Abstract
- In situ generation of H 2 O 2 by photocatalyst with sterilization is an environmentally friendly method. In this work, we prepared three kinds of Zn-based ZIFs materials, i.e., MAF-6, ZIF-11 and ZIF-71, and systematically investigated their application in the area of photocatalytic H 2 O 2 production, and antibacterial efficiency. It is found that MAF-6 had the best ability of generate H 2 O 2 (1005 μmol h<superscript>-1</superscript>g<superscript>-1</superscript>), 1.6 times more than ZIF-11, while ZIF-71 produced almost no H 2 O 2. The sterilization rate of MAF-6 against Staphylococcus aureus and Escherichia coli can reach 97% and 91% in 3 h, respectively. It is worth noting that the more photo-generated reactive oxygen species (∙OH and ∙O 2 <superscript>-</superscript>) are produced, the better sterilization effect. This work provides new material and insights into photocatalytic sterilization by in situ H 2 O 2 generation. [Display omitted] • Three Zn-based ZIFs are successfully fabricated at room conditions. • The photocatalytic performance has the order of MAF-6 >ZIF-11 >ZIF-71. • The main ROS is∙O 2 <superscript>-</superscript> and ∙OH. • The mechanism is proved by experiment and DFT calculation. [ABSTRACT FROM AUTHOR]
- Subjects :
- STERILIZATION (Disinfection)
REACTIVE oxygen species
STAPHYLOCOCCUS aureus
Subjects
Details
- Language :
- English
- ISSN :
- 22133437
- Volume :
- 11
- Issue :
- 5
- Database :
- Supplemental Index
- Journal :
- Journal of Environmental Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 172847038
- Full Text :
- https://doi.org/10.1016/j.jece.2023.110594