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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Band gap tuning of lead-substituted BaSnO3 for visible light photocatalysis

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Title
Band gap tuning of lead-substituted BaSnO3 for visible light photocatalysis
Other Titles
Band gap tuning of lead-substituted BaSnO3 for visible light photocatalysis
Author
Borse, Pramod H.Joshi, Upendra A.Ji, Sang MinJang, Jum SukLee, Jae SungJeong, Euh DuckKim, Hyun Gyu
Keywords
WATER
Issue Date
2007-01
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.90, no.3, pp.034103 -
Abstract
The Pb substitution effect was investigated experimentally and theoretically on the crystal structure of BaSnO3 and on the photo-oxidation activity of H2O. The chemically doped Pb in BaSnO3 induced a concentration-dependent redshift of the experimental band gap (BG). The BaPb0.8Sn0.2O3 system produced 32 mu mol/h of O-2 under lambda >= 420 nm photons, but no O-2 for BaSnO3. The DFT calculations of BaPbxSn1-xO3 (x=0,0.5,1) by using generalized approximation, implying the BG alteration and the photocatalytic activity of BaPbxSn1-xO3, are due to the induced Pb 6s orbital in the BG of BaSnO3. Thus Pb modified the insulating nature of BaSnO3 to semiconducting and semimetallic. (c) 2007 American Institute of Physics
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DOI
10.1063/1.2430932
ISSN
0003-6951
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ECHE_Journal Papers
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