Titanium dioxide (TiO2) is a good photocatalyst and canapplied for the degradation of organic compounds. In order to increase the performance of TiO2, modification needswith other compounds, for example composite TiO2-SiO2. The purpose of this study is determine the functional groups that characterize by Fourier Transform Infrared (FTIR) and determinephase and crystalline size as well as that…