Dopant dependent band gap tailoring of hydrothermally prepared cubic SrTixM1-xO3 (M=Ru,Rh,Ir,Pt,Pd) nanoparticles as visible light photocatalysts

被引：71
作者：
Bae, Sang Won [1 ]
Borse, Pramod H. [1 ]
Lee, Jae Sung [1 ]
机构：
[1] Pohang Univ Sci & Technol, Dept Chem Engn, NRL, Pohang 790784, South Korea
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 10期
关键词：
D O I：
10.1063/1.2897300
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 H-2 evolution under lambda>420 nm 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. (C) 2008 American Institute of Physics.
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