The commercial TiO2-P25 was used as a support to obtain Chini-TiO2 composites having 0.1 and 0.02 wt% of clusters via an impregnation method. Adjusted volumes of previously irradiated cluster solution (1.0 and 0.2 ml, 10 -3 M Pt concentration) were added to the weighed TiO₂-P25 (~ 195 mg), and diluted with ethanol to give 8 ml suspensions. The ethanol suspensions of the Chini clusters and TiO2 were covered with aluminium foil and stirred continuously overnight. Then, the obtained photocatalysts were centrifuged, washed with ethanol, and dried in an oven (60 o C, 24 hours) to obtain dry powders.