Study on the self-cleaning and thermal reducing abilities of TiO₂ coated clay roof tile

In this study, TiO₂ nanoparticles have been successfully dilated on clay roof tiles using a simple spray method combined with heating. The coating process was initiated by dispersing TiO₂ powder in distilled water. There are five samples made based on the number of TiO₂ coating. The samples were then tested for self-cleaning and thermal reducing abilities. The self-cleaning ability test was carried out in a methylene blue photodegradation experiment, which was superimposed on the surface of samples. The result showed that titania roof tile with 3 times coating showed the best performance. Meanwhile, the thermal reducing capability test showed that the TiO₂ layer's presence on the roof tile surface had decreased the surface temperature at about 1-3°C. SEM-EDX and FTIR analysis showed that TiO₂ was successfully coated on the surface of the titania roof tile. Meanwhile, based on the results of XRD characterization, we recognized that the TiO₂ used is pure anatase TiO₂.