Antibacterial properties of F-doped ZnO visible light photocatalyst

Journal of Hazardous Materials
Joanna Podporska-CarrollSuresh C Pillai

Abstract

Nanocrystalline ZnO photocatalysts were prepared by a sol-gel method and modified with fluorine to improve their photocatalytic anti-bacterial activity in visible light. Pathogenic bacteria such as Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) were employed to evaluate the antimicrobial properties of synthesized materials. The interaction with biological systems was assessed by analysis of the antibacterial properties of bacteria suspended in 2% (w/w) powder solutions. The F-doping was found to be effective against S. aureus (99.99% antibacterial activity) and E. coli (99.87% antibacterial activity) when irradiated with visible light. Production of reactive oxygen species is one of the major factors that negatively impact bacterial growth. In addition, the nanosize of the ZnO particles can also be toxic to microorganisms. The small size and high surface-to-volume ratio of the ZnO nanoparticles are believed to play a role in enhancing antimicrobial activity.

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Citations

Feb 3, 2018·Applied Microbiology and Biotechnology·Arnau BassegodaTzanko Tzanov
May 20, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Nadine WiesmannJuergen Brieger
Aug 14, 2018·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Padmanaban SivakumarMin Suk Shim
Nov 28, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yonghai FengMingdong Dong
Mar 16, 2018·Frontiers in Chemistry·Chhabilal RegmiRamesh P Pandey
Dec 16, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Tahmineh Rahmani EliatoYoung Jo Kim
Dec 4, 2020·International Journal of Molecular Sciences·Yuchao LiSie Chin Tjong
Apr 1, 2021·Environmental Science and Pollution Research International·Anny Leudjo TakaXavier Yangkou Mbianda
May 12, 2021·Environmental Science and Pollution Research International·Zeynab KhazaeeMika Sillanpää
Oct 1, 2020·Materials Today : Proceedings·Sreed Sharma KanakkillamSadasivan Shaji

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