Dopant dependent band gap tailoring of hydrothermally prepared cubic SrTixM1−xO3 (M=Ru,Rh,Ir,Pt,Pd) nanoparticles as visible light photocatalysts
Open Access
- 10 March 2008
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (10) , 104107
Abstract
Nanostructured cubic SrTiO3 particles were hydrothermally synthesized and studied experimentally/theoretically for photoreduction of water. The particles were doped with metal atoms (M=Ru,Rh,Ir,Pt,Pd), which acquired high cyrstallinity after thermal treatment. SrTiO3:Rh showed the highest rate of H2 evolution under λ>420nm photons. The density functional theory calculations of SrTixM1−xO3 (M=Ru,Rh,Ir,Pt) implied that the photocatalytic activity of SrTixRh1−xO3 was due to its suitable band energetics, and the induced hybridized Ti∕Rh orbitals in the bandgap of SrTiO3.Keywords
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