Fabrication of $TiO2$ Thick Film for Photocatalyst from Commercial $TiO2$ Powder Available to Purchase

Photocatalytic activity of $TiO2$ thick film ceramics made of commercial $TiO2$ powder has been studied. The $TiO2$ powder was nano sized one that was derived from dried $TiO2$ suspension. The $TiO2$ suspension was made by pouring some blended commercial $TiO2$ powder into some amount of water. The paste of $TiO2$ was made by mixing the nano sized $TiO2$ powder with organic vehicle and glass frit. The paste was spread on a glass substrate. The paste was dried at 100 °C and heated at different temperatures (400 °C and 500 °C) for 60 minutes to produce thick film ceramics. The photocatalytic activity of these films was evaluated by measuring the concentration of a solution of methylene blue where the thick films were inside after being illuminated by UV light at various periods of times. The initial concentration of the methylene blue solution was 5 ppm. Structural analyses were carried out by X‐ray diffraction (XRD). The XRD analyses showed that the produced thick film ceramic had mainly crystal structure of anatase. According to the photocatalytical data, it was known that the produced thick film ceramics were photocatalyst which were capable of decomposing an organic compound such as the methylene blue.