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.

Development of visible-light-responsive Ir and La-codoped KTaO3 photocatalysts for water splitting.

Ir and La-codoped KTaO3 has arisen as a novel powdered photocatalyst responding to visible light up to a wavelength of 600 nm. RhCrO3-loaded KTaO3 codoped with Ir and La splits water into H2 and O2 under visible light irradiation.