Abstract In this study, three photoelectrodes with bismuth vanadate (BVO) and oxide (BO) films were deposited on an ITO coated glassy substrate using different routes. Both photoactive when irradiated by light. Notably, the photoelectrode BVO–1/BVO–2/BO film showed improved photoelectrochemical performance compared to BVO–1 BVO–1/BVO–2 films, due synergies involved in process of separation/tran...