https://doi.org/10.1051/epjap/2010100205
Impact of palladium substitution for copper in Bi2CuO4 synthesized via sol-gel method
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
Corresponding author: sari-esma13@hotmail.com
Received:
21
May
2010
Revised:
17
October
2010
Accepted:
21
October
2010
Published online:
23
December
2010
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
PdxO4 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 (dM-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.
© EDP Sciences, 2010
