Synthesis and Characterization of LaNixCo1-xO3 Perovskites via Complex Precursor Methods


This work presents a study on the synthesis of LaNixCo1-xO3 perovskites via complex precursor methods. Perovskite oxides with the composition LaNixCo1-xO3 were synthesized by chelating precursor and polymeric precursor methods using nickel and/or cobalt nitrates, lanthanum nitrate, ethylene glycol, citric acid, and EDTA as starting source. The obtained perovskite were characterized by thermogravimetric analysis, infrared spectroscopy, X-ray diffraction and the morphology of the samples were investigated by N2 adsorption experiments and average medium particle size. TG curves and FTIR spectra were particularly useful in establishing of the optimal calcination temperature of the precursor powders. X-ray diffraction patterns revealed the formation of the perovskite structure in all samples prepared by both synthesis method and after calcinations at 700℃. The results showed that the preparation method resulted in oxides with the intended structure. The specific surface area values were influenced by preparation method.

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Silva, G. , Santos, J. , Martinelli, D. , Pedrosa, A. , de Souza, M. and Melo, D. (2010) Synthesis and Characterization of LaNixCo1-xO3 Perovskites via Complex Precursor Methods. Materials Sciences and Applications, 1, 39-45. doi: 10.4236/msa.2010.12008.

Conflicts of Interest

The authors declare no conflicts of interest.


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