Long wavelength visible light-responsive SrTiO3 photocatalysts doped with valence-controlled Ru for sacrificial H2 and O2 evolution

SrTiO3 doped with Ru, H2-reduced SrTiO3 doped with Ru and SrTiO3 codoped with Ru and Sb were developed as active photocatalysts for sacrificial H2 and O2 evolution under visible light irradiation. H2-Reduced SrTiO3:Ru showed the highest activity responding up to 750 nm, almost the whole range of visible light.