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Synthesis and photophysical properties of barium indium oxides

Published online by Cambridge University Press:  31 January 2011

J. Yin ,
Z. Zou  and
J. Ye
J. Yin
Affiliation:
Ecomaterials Center, National Institute for Materials Science (NIMS), 1–2–1 Sengen, Tsukuba, Ibaraki 305–0047, Japan
Z. Zou
Affiliation:
Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1 Higashi, Tsukuba, Ibaraki 305–8565, Japan
J. Ye
Affiliation:
Ecomaterials Center, National Institute for Materials Science (NIMS), 1–2–1 Sengen, Tsukuba, Ibaraki 305–0047, Japan
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Abstract

Barium indium oxides (BaIn2O4, Ba4In6O13, Ba2In2O5, Ba3In2O6, and Ba5In2O8) were synthesized by the citric process and characterized by powder x-ray diffraction. The optical absorption properties of these compounds were investigated by UV–visible diffuse reflectance spectroscopy. It was found that with the increase of the mole ratio of In2O3 in the formula the optical absorption edges of these oxides shift to the longer wavelength side monotonically. The photocatalytic H2 and O2 evolutions under visible light irradiation (λ > 420 nm) from aqueous CH3OH/H2O and AgNO3/H2O solutions were performed. Among these oxides, BaIn2O4 was the most stable compound, and other compounds were not stable chemically in the case of water and visible light irradiation.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 17 , Issue 9 , September 2002 , pp. 2201 - 2204
Copyright
Copyright © Materials Research Society 2002

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References

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