Fig. 3From: Facile Preparation and Characterization of Polyaniline and CeO2 Co-Decorated TiO2 Nanotube Array and its Highly Efficient Photoelectrocatalytic ActivityEffects of a CeO2 loading amount, b PANI loading amount, and c annealing temperature. 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 VBack to article page