Anti-bakteriyel filmlerin cam üzerine sol-gel yöntemi ile kaplanmasi

In this study, glass surface is coated with thin films of Titanium dioxide by using sol-gel route. Titanium dioxide based chemicals were used as precursors at the solutions prepared for film coating, and also methanol and acetyl acetone were used as solvent and chelating agent respectively. After the glass samples were dipped in prepared solutions by means of a special apparatus, they were taken into the preheated (500 °C) vertical furnace to dry, and then they were annealed at the same temperature. The thin films formed on the glass surface were characterized through the instrument of X-ray diffraction (XRD), X-ray photoelectron spectrometer (XPS), Thermogravimetric and differential thermal analysis (TG-DTA), Ellipsometer, Spectrometer and anti-bacterial test devices. TiO2 peak was observed at XPS analysis though it was not seen in the result of XRD output. From the TG-DTA characterization, annealed glass temperature was determined within the interval between 400-500 °C. By means of ellipsometer analysis thickness of layers was measured and it was observed that the thickness of glass samples altered between 42 to 250 nm in accordance with the number of dipping into the solution. Spectrometer analysis indicated that the optical transparency of thin films decreased as the number of dipping increased. In conclusion, the data acquired from the measurements of anti-bacterial tests demonstrated that an observable reduction occurred at the number of bacterials on the surface layer.