Probing Photocatalytic Characteristics of Sb-Doped TiO₂ under Visible Light Irradiation

Figure 3

(a) Plots of the fluorescence spectral for the 500 μM terephthalic acid on P25 TiO₂ and pure and 0.1%~5% Sb-doped TiO₂ catalysts after visible light irradiation for 20 min. (b) The fluorescence intensity at 426 nm after irradiation 10 min for terephthalic acid on the pure and 0.1%~5% Sb-doped TiO₂, without scavenger (red), with DMSO (blue) and p-benzoquinone (green), respectively.

(a)

(b)