Selective Photooxidation and Photoreduction Processes at 𝐓𝐢𝐨_𝟐 Surface-Modified by Grafted Vanadyl

Figure 5

Benzaldehyde formation as a function of time during the photooxidation of 1×10⁻³ mol L⁻¹ benzyl alcohol in aqueous suspensions of TiO₂ (curve 1), (VO_𝑥)_𝑛/TiO₂ (2×10⁻⁵ mol g⁻¹ vanadium, curve 2), and (VO_𝑥)_𝑛/TiO₂ (6×10⁻⁵ mol g⁻¹ vanadium, curve 3). Irradiation: 𝜆>360 nm. I = 15 mW cm⁻².