The development of an Ir and Sr-codoped KNbO3 photocatalyst as an O2-evolving photocatalyst for Z-schematic water splitting under visible light irradiation.

Ir and Sr-codoped KNbO3 has been found to be a novel photocatalyst for sacrificial O2 evolution under visible light irradiation. The Ir and Sr-codoped KNbO3 developed worked as an O2-evolving photocatalyst for Z-schematic water splitting under visible light irradiation when Ru-loaded SrTiO3 doped with Rh was employed as a H2-evolving photocatalyst.