Photoelectrocatalytic Performance of Benzoic Acid on TiO₂ Nanotube Array Electrodes

Figure 1

Typical photocurrent-time responses obtained from the thin-cell (a) 2.0 mol/L NaNO₃ solution under illumination; (b) 2.0 mol/L NaNO₃ with 0.4 mmol/L benzoic acid under illumination; (c) 2.0 mol/L NaNO₃ solution under no illumination; (d) 2.0 mol/L NaNO₃ with 0.4 mmol/L benzoic acid under no illumination.