Development of silver-titanium dioxide photocatalyst films for antibacterial applications

Titanium dioxide is a kind of photocatalyst that can degrade harmful materials into H2O and CO2. It can also be used for antobacteria. In this study, Ag-TiO2 sol will be prepared by sol-gel method using TiCl4 as precursor and H2O2 as the peptizing agent in order to induce the formation of TiO2 nanoparticles that converted from Ti(OH)4 under 90-95°C. The purpose of this study is to use solgel method to prepare silver-modified TiO2 for improvement of the activity. Thephotocatalysts will be characterized by XRD, DLS, SEM, TEM, HRTEM, FTIR, and UV-Vis spectroscopy. The photocatalytic reaction and antibacterial test will be carried out under UV light and visible light irradiation. The presence of silver is believed to have high antibacterial capability. The lab scale procedure will bescale up by company.