Back to Search Start Over

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.

Authors :
Li, Xiaoyue
Li, Penghui
Li, Yingjie
Liu, Haitang
Yang, Zongzheng
Chen, Yanyan
Liao, Xiaoyuan
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]

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