Selective Photooxidation and Photoreduction Processes at Surface-Modified by Grafted Vanadyl
Figure 6
UV-visible spectra illustrating products formation following 1 h irradiation ( nm, I = 15 mW cm−2) of de-aerated suspensions of TiO2 (4 g L−1) and (VOx)n/TiO2 ( mol g−1 vanadium) in water/2-propanol (80/20%) containing mol L−1 4-nitrobenzaldehyde. Results show complete reduction to 4-amino-benzyl alcohol (TiO2) and 100% selective partial reduction to 4-amino-benzaldehyde .
