Indoor-Light-Activated Blue TiO2-Molecule-WO3 Visible Photocatalyst for Antibacterial Performance against Escherichia coli.
ACS Infect Dis
; 10(6): 1890-1895, 2024 Jun 14.
Article
em En
| MEDLINE
| ID: mdl-38738652
ABSTRACT
Currently used visible light catalysts either operate with high-power light sources or require prolonged periods of time for catalytic reactions. This presents a limitation regarding facile application in indoor environments and spaces frequented by the public. Furthermore, this gives rise to elevated power consumption. Here, we enhance photocatalytic performance with blue TiO2 and WO3 complexes covalently coupled through an organic molecule, 3-mercaptopropionic acid, under indoor light. Antibacterial experiments against 108 CFU/mL Escherichia coli (E. coli) suspensions were conducted under indoor light exposure conditions. They showed a sterilization effect of almost 90% within 70 min and nearly 100% after 110 min. The complex generates reactive oxygen species (ROS), such as â¢OH and O2â¢-, under natural air conditions. We also showed that h+ and â¢OH are important for sterilizing E. coli using common scavengers. This research highlights the potential of these complexes to generate ROS, effectively playing a crucial role in antibacterial effects under indoor light.
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Base de dados:
MEDLINE
Assunto principal:
Titânio
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Tungstênio
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Espécies Reativas de Oxigênio
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Escherichia coli
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Luz
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Antibacterianos
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article