The electrophoretic loading of porous perovskite-lanthanum cobaltite (LaCoO₃) on bismuth doped g-C₃N₄ (Bi@g-C₃N₄) as a novel photoanode was designed for the efficient photoelectrocatalytic water splitting. Before loading cocatalyst, the photoelectrocatalytic oxygen evolution of g-C₃N₄ was investigated with various amounts of Bi. The photoconversion efficiency enhanced more than 3.7 times for 3.6% Bi doped compared with that of the pristine g-C₃N₄. The Mott-Schottky plots showed the amount of band bending for Bi@g-C₃N₄ is more than that of g-C₃N₄ resulting in better electron transfer at the photoelectrode/electrolyte interface. By loading LaCoO₃ on Bi@g-C₃N₄ photoanode, the photoconversion efficiency of 2.3% at 0.28 V (vs. RHE) was obtained under visible light which is more than that of Bi@g-C₃N₄ (0.92% at 0.48 V vs. RHE) alone. The high photocurrent density of 0.40 mA cm⁻² was observed for Bi@g-C₃N₄/LaCoO₃ photoanode as compared with Bi@g-C₃N₄ (0.17 mA cm⁻²) at the redox potential of O₂/H₂O. Also, Bi@g-C₃N₄/LaCoO₃ photoanode represents a smaller arc radius in electrochemical impedance spectroscopy Nyquist plot compared with those of g-C₃N₄ and Bi@g-C₃N₄.

多孔钙钛矿-钴酸镧（LaCoO ₃）在铋掺杂的 gC ₃ N ₄（Bi@gC ₃ N ₄）上的电泳负载作为一种新型光电阳极被设计用于有效的光电催化水分解。在负载助催化剂之前，用不同量的 Bi 研究了gC ₃ N ₄的光电催化析氧。与原始 gC ₃ N ₄相比，掺杂 3.6% Bi 的光转换效率提高了 3.7 倍以上。Mott-Schottky 图显示 Bi@gC ₃ N ₄的能带弯曲量大于 gC₃ N ₄在光电极/电解质界面处产生更好的电子转移。通过在 Bi@gC ₃ N ₄光阳极上负载 LaCoO ₃，在可见光下获得了 2.3% 的光转换效率（0.28 V（vs. RHE）），高于 Bi@gC ₃ N ₄（0.48 V 时的 0.92%）与 RHE）单独。在O ₂ /H ₂的氧化还原电位下，与Bi@gC ₃ N ₄ (0.17 mA cm ^-2 )相比，Bi@gC ₃ N ₄ /LaCoO _{3 光}阳极的光电流密度为0.40 mA cm ^-2O.此外，与gC ₃ N ₄和Bi@gC ₃ N ₄相比，Bi@gC ₃ N ₄ /LaCoO _{3 光}阳极在电化学阻抗谱奈奎斯特图中代表更小的弧半径。