Visible Light Photocatalyst Anatase Phased TiO2 Nanoparticles for Enhanced Antibacterial Performance

This study reports the development of anatase TiO 2 synthesized by facile photon-induced method (PIM) at various reaction times of 6 days, 8 days, 10-day samples. The 10 days TiO 2 sample shows stable anatase phase, whereas 100% rutile phase at the same temperature was observed for standard TiO 2 ....

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Bibliographic Details
Published inJournal of cluster science Vol. 32; no. 6; pp. 1701 - 1709
Main Authors Nagaraj, G., Tamilarasu, S.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.11.2021
Springer Nature B.V
Subjects
Absorbance
Anatase
Catalysis
Chemistry
Chemistry and Materials Science
Crystallites
E coli
Energy
Inorganic Chemistry
Light
Methods
Nanochemistry
Nanomaterials
Nanoparticles
Organic contaminants
Original Paper
Phase transitions
Photocatalysis
Photocatalysts
Physical Chemistry
Titanium
Titanium dioxide
Oxygen-rich
Antibacterial
High phase stability
PIM
Pure titania
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Summary:This study reports the development of anatase TiO 2 synthesized by facile photon-induced method (PIM) at various reaction times of 6 days, 8 days, 10-day samples. The 10 days TiO 2 sample shows stable anatase phase, whereas 100% rutile phase at the same temperature was observed for standard TiO 2 . Mainly, the PIM was used to tuning the properties of visible light absorbance TiO 2 photocatalyst used for improving antibacterial performance. The antibacterial activity of TiO 2 against Staphylococcus aureus and Escherichia coli was determined by the agar disc diffusion method. Anatase TiO 2 nanoparticles demonstrated excellent antibacterial activity against extracellular S. aureus with 80% and E. coli with 82% killing efficacy at concentrations as low as 100 μg/mL, which is 100% faster than the standard and other pure TiO 2 reported earlier. The obtained undoped anatase Titania with enhanced chemical reactivity has great potential for antibacterial properties. Moreover, the smaller crystallite size (25 nm) and narrowing bandgap (2.96 eV) TiO 2 nanoparticles were more effective in killing bacteria compared with standard TiO 2 . Therefore, this work indicated that anatase phased TiO 2 under visible light absorbance has good potential with excellent clinical applications.
ISSN:1040-7278
1572-8862
DOI:10.1007/s10876-020-01939-9