Factors Influencing the Photocatalytic Efficiency in the Experimental for the TiO2 Powder Slurry Systems

The photocatalytic efficiencies of three commercially available TiO2 samples were evaluated and compared for TiO2 powder dispersed system with respect to pH and the water to be used for the perpetration of TiO2 slurry. All the TiO2 samples of P-25, NT-C, NT-20 showed a significant dependence of the photocatalytic efficiency on pH and exhibited higher photocatalytic efficiency in the pH between 5 and 7. The water used for the preparation of the TiO2 slurry also affected the photocatalytic efficiency of the TiO2 samples presumably due to a few cation ions existing in the water. The photocatalytic properties of TiO2 samples varied significantly depending on the key experimental conditions applied to the TiO2 slurry.