Germicide Feasibility of TiO2/Glass Fiber and Ag-TiO2/Glass Fiber Photocatalysts
Photocatalysts TiO2 and Ag-TiO2 supported on glass fiber were prepared by sol-gel method. Glass fibers were used not only as a substrate for TiO2 coating to increase surface area of TiO2 but also as an adsorbent for bacteria removal by photocatalytic reaction. The surface topography, and optical properties of materials were characterized by scanning electron microscope , and ultraviolet-visible spectroscopy. The prepared photocatalysts were applied to investigate disinfection effects of Escherichia coli (E. coli) in nursing facilities. Ag-TiO2/glass fiber exhibits much higher photocatalytic activity for disinfection of E. coli under visible light. This increased photocatalytic activity is probably due to the Ag loading effect by narrowing the band gap of the photocatalyst and preventing the fast recombination of the photogenerated charge carriers.
Reza Iranpour, Ji Zhao, Aijie Wang, Fenglin Yang and Xinyong Li
T. D. Pham et al., "Germicide Feasibility of TiO2/Glass Fiber and Ag-TiO2/Glass Fiber Photocatalysts", Advanced Materials Research, Vols. 518-523, pp. 864-868, 2012