Ultrasonochemically Modified Ag@TiO <sub>2</sub> Nanocomposites as Potent Antibacterial Agent in the Paint Formulation for Surface Disinfection
Shamkumar P. Deshmukh, Valmiki B. Koli, Ananta G. Dhodamani, Satish M. Patil, Vijay S. Ghodake, Sagar D. Delekar
Abstract
Abstract Advanced visible active antibacterial paint was developed by ultrasonochemically treated Ag@TiO 2 NCs with varying content of Ag (1 wt. % to 5 wt. %) as a photoactive agent for antibacterial paint formulation for surface disinfection. Initially, the existence of the Ag@TiO 2 NCs in the paint formulation and their impact with varying content of Ag in wt. % was studied through various spectroscopic studies. XRD analysis confirms the good crystalline nature of the Ag@TiO 2 NCs after the paint formulation. UV visible spectroscopic study reveals the visible active properties of the antibacterial paint. Contact angle measurement study shows hydrophobic nature of the paint. Thereafter, Ag@TiO 2 NCs with varying the content of Ag were used as a photoactive additive for the formulation of antibacterial powder paint through an industrial process. Finally, the 3 wt. % of Ag in the Ag@TiO 2 NCs as an additive in the paint exhibits higher antibacterial activity against E. coli as compared with S. aureus bacteria's in the presence of visible light irradiation. It also confirmed after 72 hrs. that there was no leaching of the antibacterial paint on the coated substrates. Therefore, such nanocomposite based visible active antibacterial paint is efficient to use in healthcare for reducing hospital‐acquired infections.