Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route

Polycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analys...

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Principais autores: Rabelo, Adriano Alves, Macedo, Marfran Cardoso de, Melo, Dulce Maria de Araújo, Paskocimas, Carlos Alberto, Martinelli, Antonio Eduardo, Nascimento, Rubens Maribondo do
Formato: article
Idioma:English
Publicado em: ABM, ABC, ABPol
Assuntos:
Perovskite
Polymeric precursor
SOFC
Endereço do item:https://repositorio.ufrn.br/handle/123456789/31730
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spelling ri-123456789-317302021-03-14T08:45:58Z Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route Rabelo, Adriano Alves Macedo, Marfran Cardoso de Melo, Dulce Maria de Araújo Paskocimas, Carlos Alberto Martinelli, Antonio Eduardo Nascimento, Rubens Maribondo do Perovskite Polymeric precursor SOFC Polycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analysis, high-temperature X-ray diffraction to determine the crystalline perovskite phase and crystallite sizes, scanning electron microscopy for the morphological analysis, nitrogen adsorption to determine the specific surface area, and laser scattering to evaluate the particle size distribution. The LSM perovskite-type oxides containing intermediate 0.22 mol % Sr were found to exhibit a tendency to decrease in crystallite size and increase in specific surface area and, when calcined at 700–900 °C exhibited a pure phase of perovskite, had a crystallite size of about 17–20 nm and a specific surface area for 900 °C of 34.3 m2 .g-1 2021-03-08T16:51:56Z 2021-03-08T16:51:56Z 2011-04-01 article RABELO, Adriano Alves; MACEDO, Marfran Cardoso de; MELO, Dulce Maria de Araújo; PASKOCIMAS, Carlos Alberto; MARTINELLI, Antonio Eduardo; NASCIMENTO, Rubens Maribondo do. Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route. Materials Research, [S.L.], v. 14, n. 1, p. 91-96, 1 abr. 2011. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015&lng=en&tlng=en. Acesso em: 11 nov. 2020. http://dx.doi.org/10.1590/s1516-14392011005000018. 1980-5373 1516-1439 https://repositorio.ufrn.br/handle/123456789/31730 10.1590/s1516-14392011005000018 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf ABM, ABC, ABPol
institution Repositório Institucional
collection RI - UFRN
language English
topic Perovskite
Polymeric precursor
SOFC
spellingShingle Perovskite
Polymeric precursor
SOFC
Rabelo, Adriano Alves
Macedo, Marfran Cardoso de
Melo, Dulce Maria de Araújo
Paskocimas, Carlos Alberto
Martinelli, Antonio Eduardo
Nascimento, Rubens Maribondo do
Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
description Polycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analysis, high-temperature X-ray diffraction to determine the crystalline perovskite phase and crystallite sizes, scanning electron microscopy for the morphological analysis, nitrogen adsorption to determine the specific surface area, and laser scattering to evaluate the particle size distribution. The LSM perovskite-type oxides containing intermediate 0.22 mol % Sr were found to exhibit a tendency to decrease in crystallite size and increase in specific surface area and, when calcined at 700–900 °C exhibited a pure phase of perovskite, had a crystallite size of about 17–20 nm and a specific surface area for 900 °C of 34.3 m2 .g-1
format article
author Rabelo, Adriano Alves
Macedo, Marfran Cardoso de
Melo, Dulce Maria de Araújo
Paskocimas, Carlos Alberto
Martinelli, Antonio Eduardo
Nascimento, Rubens Maribondo do
author_facet Rabelo, Adriano Alves
Macedo, Marfran Cardoso de
Melo, Dulce Maria de Araújo
Paskocimas, Carlos Alberto
Martinelli, Antonio Eduardo
Nascimento, Rubens Maribondo do
author_sort Rabelo, Adriano Alves
title Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
title_short Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
title_full Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
title_fullStr Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
title_full_unstemmed Synthesis and characterization of La1-xSrx MnO3±δ powders obtained by the polymeric precursor route
title_sort synthesis and characterization of la1-xsrx mno3±δ powders obtained by the polymeric precursor route
publisher ABM, ABC, ABPol
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/31730
work_keys_str_mv AT rabeloadrianoalves synthesisandcharacterizationofla1xsrxmno3dpowdersobtainedbythepolymericprecursorroute
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AT melodulcemariadearaujo synthesisandcharacterizationofla1xsrxmno3dpowdersobtainedbythepolymericprecursorroute
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AT nascimentorubensmaribondodo synthesisandcharacterizationofla1xsrxmno3dpowdersobtainedbythepolymericprecursorroute
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