Solar-Light-Driven Ag9 (SiO4)2 NO3 for efficient photocatalytic bactericidal performance
Photocatalytic materials are being investigated as effective bactericides due to their superior ability to inactivate a broad range of dangerous microbes. In this study, the following two types of bacteria were employed for bactericidal purposes: Gram-negative Escherichia coli (E. coli) and Gram-pos...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Published: |
MDPI
2022
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/43407/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128685240&doi=10.3390%2fjcs6040108&partnerID=40&md5=193604fbb9d493bde1f6738a5fc75431 |
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| Summary: | Photocatalytic materials are being investigated as effective bactericides due to their superior ability to inactivate a broad range of dangerous microbes. In this study, the following two types of bacteria were employed for bactericidal purposes: Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus). The shape, crystal structure, element percentage, and optical properties of Ag9 (SiO4)2 NO3 were examined after it was successfully synthesized by a standard mixing and grinding processing route. Bactericidal efficiency was recorded at 100 by the following two types of light sources: solar and simulated light, with initial photocatalyst concentration of 2 µg/mL, and 97 and 95 of bactericidal activity in ultra-low photocatalyst concentration of 0.2 µg/mL by solar and simulated light, respectively, after 10 min. The survival rate was studied for 6 min, resulting in 99.8 inhibition at the photocatalyst dose of 2 µg/mL. The mechanism of bactericidal efficiency was found to be that the photocatalyst has high oxidation potential in the valence band. Consequently, holes play a significant part in bactericidal efficiency. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. |
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