Characterization of TiO2 coating deposited on ceramic substrates

The characteristics of titanium dioxide, TiO2, coating on different ceramic substrates produced via sol-gel dip-coating technique was studied to take benefit of its antimicrobial properties. The coating morphologies and thickness deposited on unglazed ceramic tiles and Green Innovative Glass ceramic (GIG) with varied dipping time were analyzed using Scanning electron microscope (SEM), while the crystalline phases were characterized using Glancing angle, X-ray Diffraction (GAXRD). Results show that the coatings produced are with homogeneous morphology, thicker film and with the presence of anatase and rutile phases regardless of substrate's type. It was also observed that one dipping time is sufficient to produce a continuous coating with average thickness of similar to 12 mu m on unglazed ceramic tile, while more dipping times is needed for GIG ceramics.