Fig. 5 shows FE-SEM pictures of TiO2-SiO2 powder. This figure shows spherical and agglomerated TiO2-SiO2 nano-particle in samples 100 and 200. Nano-size of TiO2-SiO2 particles with spherical shape are observed in specific condition. Spherical shape is obvious when TiO2 content in mixture increasesin comparison to low content TiO2 that causes random or dendrite shape in mixed oxides. The particle size grows relatively by increasing TiO2 content in composite. This is due to the suppressive effect of SiO2 on the crystal growth of TiO2. This is accordance with the result of XRD analysis, which shows that the restriction on crystal growth of TiO2 particles.