Mechanochemical Preparation and Properties of Nanodimensional Perovskite Materials

• Authors: Z. Cherkezova-Zheleva , D. Paneva , I. Yordanova , M. Shopska , H. Kolev
• Languages of publication: EN

Abstracts

EN

The study is focused on the synthesis of LaMO_3 (M = Co, Fe, Mn) perovskite materials using combination of precipitation of precursors and mechanical milling at room temperature. Physicochemical properties of products at each step of preparation were studied by powder X-ray diffraction, Mössbauer spectroscopy, infrared spectroscopy (in the middle and far regions) and X-ray photoelectron measurements. As-prepared perovskite powders are composed of nanoparticles with very fine crystallite size (about 15 nm) in all cases. The materials have also high dispersion, high extent of microstrains and high level of oxygen vacancies which is very important in relevance to their use as heterogeneous catalysts.

Keywords

EN

81.07.-b; 82.80.Ej; 82.80.Pv

Discipline

• 82.80.Ej: X-ray, Mössbauer, and other γ-ray spectroscopic analysis methods
• 81.07.-b: Nanoscale materials and structures: fabrication and characterization(for structure of nanoscale materials, see 61.46.-w; for nanostructured materials in electrochemistry, see 82.45.Yz; see also 62.23.-c Structural classes of nanoscale systems in mechanical properties of condensed matter)
• 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4
• Pages: 916-920

Dates

published

2014-10

Contributors

author

Z. Cherkezova-Zheleva

• Institute of Catalysis, Bulgarian Academy of Sciences, "Acad. G. Bonchev" Str., Bld. 11, 1113 Sofia, Bulgaria

author

D. Paneva

• Institute of Catalysis, Bulgarian Academy of Sciences, "Acad. G. Bonchev" Str., Bld. 11, 1113 Sofia, Bulgaria

author

I. Yordanova

• Institute of Catalysis, Bulgarian Academy of Sciences, "Acad. G. Bonchev" Str., Bld. 11, 1113 Sofia, Bulgaria

author

M. Shopska

• Institute of Catalysis, Bulgarian Academy of Sciences, "Acad. G. Bonchev" Str., Bld. 11, 1113 Sofia, Bulgaria

author

H. Kolev

• Institute of Catalysis, Bulgarian Academy of Sciences, "Acad. G. Bonchev" Str., Bld. 11, 1113 Sofia, Bulgaria

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Identifiers

DOI

10.12693/APhysPolA.126.916