(544et) Preparation of Ag-Doped TiO2 Sol with Peroxo-Sol-Gel Method and Its Application on Antibacteria and Antivirus
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Catalysis and Reaction Engineering Division
Poster Session: Catalysis and Reaction Engineering (CRE) Division
Wednesday, October 31, 2018 - 3:30pm to 5:00pm
A series of multifunctional AgâTiO2 nanocomposites with various Ag contents were synthesized by the peroxo sol-gel method. The sol was used to coat on the glass to form a thin film. Antibacterial and antivirus (H1N1) activities of the Ag/TiO2 were investigated. The as-prepared materials were characterized by Transmission electron microscopy, high resolution transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The antibacterial activities of the samples were tested against Escherichia coli (OP50), a Gram negative organism. It was observed that the optimum Ag: TiO2 weight ratio of 1:100 represented the highest photocatalytic degradation of methylene blue aqueous solution under both UV light and visible light irradiation; moreover, it remarkably exhibited over 99.99% extremely effective against E. coli and H1N1 virus after 1 h illumination time with UVA irradiation. The presence of Ag on TiO2 significantly enhanced the photocatalytic activity. It is believe that Ag was in incorporated into TiO2 lattice structure and uplifted the valence state of TiO2. Ag is known to be an effective bacterial killer even under dark condition.