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Acta Chemica Iasi

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Influence of type of precursors on the sol-gel synthesis of the LaCoO3 nanoparticles

Nicoleta Cornei
  • “Al.I. Cuza” University of Iasi, Departament of Chemistry, 11 Carol I Bd, Iasi 700506, Romania
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/ Simona Feraru
  • “Al.I. Cuza” University of Iasi, Departament of Chemistry, 11 Carol I Bd, Iasi 700506, Romania
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/ Ion Bulimestru
  • Moldova State University, Coordination Chemistry Laboratory, 60 Mateevicistr, Chisinau, MD, 2009, Moldova
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/ Andrei Victor Sandu / Carmen Mita
  • Corresponding author
  • “Al.I. Cuza” University of Iasi, Departament of Chemistry, 11 Carol I Bd, Iasi 700506, Romania
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Published Online: 2014-07-16 | DOI: https://doi.org/10.2478/achi-2014-0001


Perovskite-type LaCoO3 was prepared by sol-gel method using nitrates / chlorides as precursors and citric acid as chelating agent. Chemical composition was obtained by means of EDX method. The structures of sintered samples were investigated by scanning electron microscopy (SEM), IR and XRD analysis. The results of X-ray diffraction indicated that the LaCoO3nanopowders obtained using nitrate as precursors had a rhombohedral perovskite-type crystal structure (S. G: R-3c), while that obtained using chloride as precursors had a mixture of LaCoO3, LaOCl and Co3O4. The all lanthanum cobaltites exhibit catalytic activity on the decomposition of hydrogen peroxide, ascribed to their higher surface and Co3+ concentration

Keywords : Perovskites; Sol-gel synthesis; X-ray diffraction; Electronic microscopy; Catalytic activity


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About the article

Published Online: 2014-07-16

Published in Print: 2014-07-01

Citation Information: Acta Chemica Iasi, Volume 22, Issue 1, Pages 1–12, ISSN (Online) 2067-2446, DOI: https://doi.org/10.2478/achi-2014-0001.

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© Alexandru Ioan Cuza University in Iaşi . This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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