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Preparation of New Bismuth Oxides by Hydrothermal Reaction

Published online by Cambridge University Press:  18 March 2011

N. Kumada ,
T. Takei ,
N. Kinomura  and
A. W. Sleight
N. Kumada
Affiliation:
Faculty of Engineering, Yamanashi University, Miyamae-cho 7, Kofu 400-8511Japan
T. Takei
Affiliation:
Faculty of Engineering, Yamanashi University, Miyamae-cho 7, Kofu 400-8511Japan
N. Kinomura
Affiliation:
Faculty of Engineering, Yamanashi University, Miyamae-cho 7, Kofu 400-8511Japan
A. W. Sleight
Affiliation:
Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA
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Abstract

Hydrothermal reactions using NaBiO3·nH2O produced a variety of newbismuth oxides that were not prepared by high temperature reaction. Some of them have pentavalent bismuth such as Bi2O4O, LiBiO3, ABi2O6 (A = Mg, Zn) and AgBiO3. When using transition metal or rare-earth metal solutions, new bismuth oxides with trivalent bismuth were obtained. In the case of Cr(NO3)3 solution a chromium bismuth oxyhydroxide, HBi3(CrO4)2O3, was prepared at 180°C, while in A2CrO4 (A = Li, Na, K) solution a new bismuth chromium oxide, Bi8(CrO4)O11, was prepared above 180°C. When A2MoO4 (A = Li, Na, K) solution was used, a new phase appeared above 220°C. By using A2WO4 (A = Li, Na, K) solution β-Bi2O3 and Bi2WO6 were obtained above 220°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 658: Symposium GG – Solid-State Chemistry of Inorganic Materials III , 2000 , GG8.7
Copyright
Copyright © Materials Research Society 2001

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References

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