Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via Hydrothermal Method

Figure 3

FTIR spectra of TiO₂-SiO₂ oxide powder containing SiO₂: (a) 0 mol%,(b) 5 mol%, (c) 10 mol%, (d) 16 mol%, (e) 20 mol%, (f) 25 mol%, (g) 30 mol%, and (h) 50 mol%. ▲ indicates absorption bands at 960 cm⁻¹, which is characteristic of Ti-O-Si bonding.