Photocatalytic Hydrogen Production in Water-Methanol Mixture over Iron-doped CaTiO 3

CaTi1-xFexO3 (0 ≤ x ≤ 0.4) solid solution photocatalysts were synthesized by iron doping during the conventional solid state reaction at 1100 ^oC for 5 h and characterized by ultraviolet-visible (UV-vis) absorption spectroscopy, X-ray diffraction,morphological analysis. We found that CaTi1-_xFe_xO_3...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2011, 32(1), , pp.95-99
Main Authors: Jang, J. S., Borse, P. H., Lee, J. S., Lim, K. T., Jung, O. S., Jeong, E. D., Bae, J. S., Kim, H. G.
Format: Article
Language:English
Subjects:
화학
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Summary:CaTi1-xFexO3 (0 ≤ x ≤ 0.4) solid solution photocatalysts were synthesized by iron doping during the conventional solid state reaction at 1100 ^oC for 5 h and characterized by ultraviolet-visible (UV-vis) absorption spectroscopy, X-ray diffraction,morphological analysis. We found that CaTi1-_xFe_xO_3 samples not only absorb UV but also the visible light photons. This is because the Fe substitution at Ti-site in CaTi1-xFexO3 lattice induces the band transition from Fe3d to the Fe3d +Ti3d hybrid orbital. The photocatalytic activity of Fe doped CaTiO_3 samples for hydrogen production under UV light irradiation decreased with the increase in the Fe concentration. There exists an optimized concentration of iron in CaTiO_3,which yields a maximum photocatalytic activity under visible light (λ ≥ 420 nm) photons. KCI Citation Count: 35
ISSN:0253-2964
1229-5949
DOI:10.5012/bkcs.2011.32.1.95