Synthesis and physicochemical characterization of LaCr1−xCuxO3

Different citrate precursor powders of lanthanum chromite doped with copper LaCr 1−x Cu x O 3 (0 ≤  x  ≤ 0.4) have been synthesized by sol–gel method. After calcination, its structural and surface characteristics have been examined by X-ray diffraction to confirm the formation of the pure perovskite...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2015-08, Vol.75 (2), p.298-304
Main Authors: Adaika, K., Omari, M.
Format: Article
Language:English
Subjects:
Ceramics
Chemistry and Materials Science
Chromite
Composites
Copper
Differential thermal analysis
Differential thermogravimetric analysis
Electrochemical analysis
Fourier transforms
Glass
Infrared analysis
Inorganic Chemistry
Lanthanum
Materials Science
Morphology
Nanotechnology
Natural Materials
Optical and Electronic Materials
Original Paper
Orthorhombic phase
Perovskites
Phase transitions
Sol-gel processes
Surface properties
Thermogravimetric analysis
X-ray diffraction
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Summary:Different citrate precursor powders of lanthanum chromite doped with copper LaCr 1−x Cu x O 3 (0 ≤  x  ≤ 0.4) have been synthesized by sol–gel method. After calcination, its structural and surface characteristics have been examined by X-ray diffraction to confirm the formation of the pure perovskite phase. Fourier transform infrared, differential thermal analysis and thermogravimetric analysis results indicate that the pure orthorhombic phase was obtained at temperature above 800 °C. The structure and morphology of the samples are characterized by SEM measurements indicating that the particles have nearly spherical shapes and are agglomerated. The study of electrochemical behavior shows that the electrode with large copper content has a better electrocatalytical activity. Graphical Abstract
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-015-3699-z