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Transmission Electron Microscopy Study of Low Mo-content Bi-Mo-O Phases

Published online by Cambridge University Press:  28 September 2012

Á. R. Landa-Cánovas ,
Eladio Vila ,
Jorge Hernández-Velasco ,
Jean Galy  and
Alicia Castro
Á. R. Landa-Cánovas
Affiliation:
Instituto de Ciencia de Materiales de Madrid, ICMM, CSIC, Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain
Eladio Vila
Affiliation:
Instituto de Ciencia de Materiales de Madrid, ICMM, CSIC, Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain
Jorge Hernández-Velasco
Affiliation:
Instituto de Ciencia de Materiales de Madrid, ICMM, CSIC, Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain
Jean Galy
Affiliation:
Centre d’Elaboration de Matériaux et d’Etudes Structurales CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse CEDEX 4, France
Alicia Castro
Affiliation:
Instituto de Ciencia de Materiales de Madrid, ICMM, CSIC, Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain

Abstract

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δ-Bi2O3, a material with a fluorite-type structure, is one of the best solid-state oxygen-ion conductors. It is a high-temperature form that cannot be quenched to room temperature. However, doping with small amounts of transition metal oxides preserves the δ-Bi2O3 structure at low temperature and retains its anionic conduction properties. The Bi2O3–MoO3 materials are interesting because of their functional properties, chiefly as catalysts and as good ionic conductors. All the phases in this system are related to the fluorite structure except Bi2MoO6 which shows an Aurivillius-type structure.

Type
Materials Sciences
Information
Microscopy and Microanalysis , Volume 18 , Supplement S5: Portuguese Supplement , August 2012 , pp. 71 - 72
Copyright
Copyright © Microscopy Society of America 2012