RESEARCH ON IMPROVING THE EFFICIENCY ANTIBACTERIAL BY MATERIAL SYNTHESIZED Ag - TiO2 PHOTOCATALYST UNDER VISIBLE LIGHT IRRADIATION

Abstract

In this study, materials nanostructured Ag-TiO2 synthesized were fabricated with structural,morphological determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV light absorption and PL electron – hole separation evaluation ability. It found that the doping of Ag could improve the optical property and light adsorption ability of Ag-TiO2 photocatalyst. By colony counting method showed that the antibacterial ability of this material against Escherichia coli bacteria in both dark, light conditions and up to 81.3% after 60 minutes under visible light conditions. This results provide a potential method to developing antibacterial agents from photocatalysts materials for application in food processing and preservation.