Modification of titania with zirconia influenced the specific surface area, anatase crystallite sizes and natural hydrophilicity of the sol–gel films, but on photocatalytic activity it did not have a significant positive effect. Zirconia at a content of 10% with respect to titania was found to be homogeneously distributed along the film thickness, presumably in its amorphous modification. The films treated at low temperatures were found to have superior efficiency towards degradation of an azo dye aqueous solution since sufficient crystallinity was developed already during the sol formation.
COBISS.SI-ID: 1104123
The coating procedure of clay roofing tiles was obtained using a simple spraying technique of a TiO2 suspension. This was followed by a thermal treatment. The defined mass % of TiO2, grain size value of TiO2 and its crystal form were the main characteristics of the designed suspensions. The tile samples were studied in their progressive ageing with exposure to water rinsing procedure. The photocatalytic activity of the coatings was determined by newly developed reactor method in gas medium, while the superhydrophilic properties were obtained by measurements of the water contact angle.
COBISS.SI-ID: 1617767