Dopant dependent band gap tailoring of hydrothermally prepared cubic SrTi{sub x}M{sub 1-x}O{sub 3} (M=Ru,Rh,Ir,Pt,Pd) nanoparticles as visible light photocatalysts

Journal Article · Mon Mar 10 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2897300· OSTI ID:21120586

Bae, Sang Won; Borse, Pramod H; Lee, Jae Sung ^[1]

---

1. Eco-friendly Catalysis and Energy Laboratory (NRL), Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)

Nanostructured cubic SrTiO{sub 3} 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. SrTiO{sub 3}:Rh showed the highest rate of H{sub 2} evolution under {lambda}>420 nm photons. The density functional theory calculations of SrTi{sub x}M{sub 1-x}O{sub 3} (M=Ru,Rh,Ir,Pt) implied that the photocatalytic activity of SrTi{sub x}Rh{sub 1-x}O{sub 3} was due to its suitable band energetics, and the induced hybridized Ti/Rh orbitals in the bandgap of SrTiO{sub 3}.

• OSTI ID: 21120586
• Journal Information: Applied Physics Letters, Vol. 92, Issue 10; Other Information: DOI: 10.1063/1.2897300; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DENSITY FUNCTIONAL METHOD
DOPED MATERIALS
ENERGY GAP
HEAT TREATMENTS
HYDROGEN
HYDROTHERMAL SYNTHESIS
IRIDIUM COMPOUNDS
NANOSTRUCTURES
PALLADIUM COMPOUNDS
PARTICLES
PHOTOCATALYSIS
PHOTOCHEMISTRY
PHOTONS
PLATINUM COMPOUNDS
RHODIUM COMPOUNDS
RUTHENIUM COMPOUNDS
STRONTIUM TITANATES
VISIBLE RADIATION