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Impact of palladium substitution for copper in Bi2CuO4 synthesized via sol-gel method

Published online by Cambridge University Press:  23 December 2010

E. Chater ,
M. Sellami  and
N. Bettahar
E. Chater*
Affiliation:
Laboratory of Physical Chemistry of Materials: Catalysis and Environment, Faculty of Science, Department of Chemistry, University of Science and Technology of Oran, BP 1505, 31000 El-Mnaouer, Oran, Algeria
M. Sellami
Affiliation:
Laboratory of Physical Chemistry of Materials: Catalysis and Environment, Faculty of Science, Department of Chemistry, University of Science and Technology of Oran, BP 1505, 31000 El-Mnaouer, Oran, Algeria
N. Bettahar
Affiliation:
Laboratory of Physical Chemistry of Materials: Catalysis and Environment, Faculty of Science, Department of Chemistry, University of Science and Technology of Oran, BP 1505, 31000 El-Mnaouer, Oran, Algeria
*
[email protected]
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Abstract

An extensive new solid solution was synthesized by substitution of Pd+2 for Cu+2 in Bi2CuO4 compound [J.-C. Boivin et al., C.R. Hebd. Seances Acad. Sci., Ser. C 276, 1105 (1973)]. Polycrystalline ceramic powder with formula Bi2Cu $_{1-x}$ Pdx O4 were prepared by sol-gel method using (Bi, Cu, Pd) nitrates and pure citric acid. X-ray patterns show a single phase with tetragonal symmetry and space group P4/ncc (No. 130). In cases, the tetragonal cell c parameter and therefore the metal-metal distance (d M-M = c/2) increases linearly with increasing palladium concentration. Electrical conductivity measurements show that the resistivity decreases regularly with pd2+ substitution. It is possible to obtain materials with an ambient temperature conductivity ranging from 10-6 to 10-3 S cm-1.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 53 , Issue 1 , January 2011 , 11502
Copyright
© EDP Sciences, 2010

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