fig2
Figure 2. Effect of different molar ratios of Cr/(Cr + Fe) on (A) the photocatalytic O2 evolution rate or (B) the photocatalytic H2 evolution rate over FeVO4. Reaction conditions for (A): 0.1 g of photocatalyst (0.8 wt% Co is loaded); 100 mL of AgNO3 aqueous solution (50 mM); 0.1 g of La2O3; 300 W Xe lamp with a cut-off filter (λ ≥ 420 nm). Reaction condition for (B): 0.1 g of photocatalyst (1.0 wt% Pt is loaded); 100 mL of ascorbic acid aqueous solution (10 mM); 300 W Xe lamp with a cut-off filter (λ ≥ 420 nm).
