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

被引：6

作者：

Cornei, Nicoleta ^{[1
]}

Feraru, Simona ^{[1
]}

Bulimestru, Ion ^{[2
]}

Sandu, Andrei Victor ^{[3
]}

Mita, Carmen ^{[1
]}

机构：

[1] Alexandru Ioan Cuza Univ, Dept Chem, 11 Carol 1 Bd, Iasi 700506, Romania

[2] Moldova State Univ, Coordinat Chem Lab, MD-2009 Kishinev, Moldova

[3] Romanian Inventors Forum, Iasi 700089, Romania

来源：

ACTA CHEMICA IASI | 2014年 / 22卷 / 01期

关键词：

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

D O I：

10.2478/achi-2014-0001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 LaCoO(3)nanopowders 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.

引用

页码：1 / 12

页数：12

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