Ultrasonic-assisted preparation of a pinhole-free BiVO4 photoanode for enhanced photoelectrochemical water oxidation

Abstract

A pinhole-free BiVO₄ electrode was successfully synthesized using an ultrasonic-assisted synthetic method on a conductive substrate. The pinhole-free BiVO₄ electrode showed highly improved photoelectrochemical activity for both sulfite oxidation and water oxidation. The blocking recombination processes were examined to clarify the enhanced photoelectrochemical performances.