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Room temperature conversion of X0.3V2O5· nH2O phase into X2V6O16· nH2O phase Influence of the nature of the cation X+

Published online by Cambridge University Press:  01 February 2011

Olivier Durupthy ,
Saïd Es-salhi ,
Nathalie Steunou ,
Thibaud Coradin  and
Jacques Livage
Olivier Durupthy
Affiliation:
Laboratoire Chimie de la Matière Condensée, UMR CNRS 7574, Tour 54 E5, Université P. et M. Curie (Paris 6), 4 place Jussieu, 75252 Paris Cedex 05, France.
Saïd Es-salhi
Affiliation:
Laboratoire Chimie de la Matière Condensée, UMR CNRS 7574, Tour 54 E5, Université P. et M. Curie (Paris 6), 4 place Jussieu, 75252 Paris Cedex 05, France.
Nathalie Steunou
Affiliation:
Laboratoire Chimie de la Matière Condensée, UMR CNRS 7574, Tour 54 E5, Université P. et M. Curie (Paris 6), 4 place Jussieu, 75252 Paris Cedex 05, France.
Thibaud Coradin
Affiliation:
Laboratoire Chimie de la Matière Condensée, UMR CNRS 7574, Tour 54 E5, Université P. et M. Curie (Paris 6), 4 place Jussieu, 75252 Paris Cedex 05, France.
Jacques Livage
Affiliation:
Laboratoire Chimie de la Matière Condensée, UMR CNRS 7574, Tour 54 E5, Université P. et M. Curie (Paris 6), 4 place Jussieu, 75252 Paris Cedex 05, France.
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Abstract

Various cations (Li+, Na+, K+, NH4+, Cs+, Mg2+, Ca2+, Ba2+) were introduced during the formation of a V2O5. nH2O gel. Cation intercalated Xy V2O5. nH2O (y = 0.3 for X = Li+, Na+, K+, NH4+ or y = 0.15 for Mg2+, Ca2+, Ba2+) were first obtained at room temperature but some of them evolve upon ageing into a new phase: XV3O8. nH2O for X = Na+, K+, NH4+ and Cs+ or XV6O16. nH2O for X = Mg2+, Ca2+, Ba2+. All the vanadium oxide phases were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and infrared spectroscopy (IR); the supernatant solutions were analysed by 51V NMR spectroscopy. These vanadium oxide phases exhibit a layered structure with cations and water molecules intercalated within the interlayer space. The formation of the different phases depends mainly on the pH of the supernatant solution and on the nature of the cation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF1.3
Copyright
Copyright © Materials Research Society 2005

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References

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