Titanium dioxide (TiO2) is a semiconductor which has 3.209 eV of gap energy. In this study, a modification of TiO2 on Maredan natural clay was carried out by impregnation method. Impregnation of TiO2 in clay was carried out to improve the semiconductor properties of TiO2. The resulted TiO2-clays were characterized using FTIR Spectroscopy to identify functional groups and the measurement of gap …