Photocatalytic water electrolysis is a key target for the development of sustainable hydrogen economy for our future energy system. The formation of highly ordered titanium dioxide (TiO2) nanotubes without bundling is essential for high efficiency in photocatalytic water electrolysis response. Based on the results obtained, highly order TiO2 nanotubes film was successfully formed through electrochemical anodization method. An anatase phase of TiO2 nanotubes film was formed under calcination temperature of 400 °C for 4 hours. Then, continuous effort has been carried out to further enhance the photocatalytic water electrolysis response by incorporating an optimum content of cadmium selenide (1 at% CdSe) species on TiO2 nanotubes using chemical bath deposition technique. It was found that the presence of about 1 at% CdSe species on TiO2 nanotubes film showed an improvement in hydrogen generation (1.7 times) than that of pure TiO2 nanotubes film because it acted as an effective mediator to trap the photo-induced electrons and minimizes the recombination of charge carriers.
