Fig. 4

The effect of different pH on TBBPA degradation efficiency in photoelectrocatalytic process under simulated daylight irradiation. The geometric surface area of TiO2 electrode was 2.0 × 2.5 cm2. Initial concentration of TBBPA: 10 mg L− 1, volume: 50 mL, electrolyte: 0.05 M Na2SO4, bias potential: 9 V