available TiO2 sites. Though the dye loading of photoanodes does
not change significantly upon incorporation of mesoporous SiO2
particle in TiO2, an increase in the absorbance of photoanodes
was observed, as shown in Fig. 6(a). The inset of Fig. 6(a) shows
the percentage enhancement in absorbance of photoanodes
prepared at different wt% of mesoporous SiO2. The enhancement
of the absorbance with incorporation of mesoporous SiO2 is
attributable to enhanced light harvesting owing to light scattering