Improved Photoelectrochemical Performance of WO3/BiVO4 Heterojunction Photoanodes via WO3 Nanostructuring
Résumé
WO3/BiVO4 heterojunction photoanodes can be efficiently employed in photoelectrochemical (PEC) cells for the conversion of water into molecular oxygen, kinetic bottleneck splitting. Composite photoelectrodes possessing a nanoflake-like morphology have been synthesized through multistep process and their PEC performance was investigated comparison to that displaying planar surface similar absorption properties thickness. tests, also presence sacrificial hole scavenger, electrochemical impedance analysis under simulated solar irradiation, incident photon current efficiency measurements highlighted charge transport recombination issues affecting composite successfully overcome by nanostructuring WO3 underlayer electrodes.