Pechini synthesis and microstructure of nickel-doped copper chromites

Detalhes bibliográficos
Autor(a) principal: Pimentel, Patrícia Mendonça
Data de Publicação: 2005
Outros Autores: Martinelli, Antonio Eduardo, Melo, Dulce Maria de Araújo, Pedrosa, Anne Michelle Garrido, Cunha, Jardel Dantas, Silva Júnior, Carlos Neco da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/31283
Resumo: Spinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments. The resulting powders were characterized by thermogravimetric analysis, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size analysis and BET surface area measurements. The formation of spinel took place upon calcination at 700 °C. IR spectroscopy revealed the presence of N1 and N2 bands, typical of spinel structures, broadened by the presence of more than one cationic species in the structure. The specific area of the resulting powder decreased from 24.7 to 1.4 m2 g-1 as the calcination temperature increased from 700 to 900 °C. Microstructural analyses revealed the presence of crystalline spinel as the only phase present in powders calcined at 900 °C. Colorimetric analyses using L*a*b* coordinates and UV-visible spectroscopy revealed that the pigment was predominantly black
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spelling Pimentel, Patrícia MendonçaMartinelli, Antonio EduardoMelo, Dulce Maria de AraújoPedrosa, Anne Michelle GarridoCunha, Jardel DantasSilva Júnior, Carlos Neco da2021-01-19T18:39:10Z2021-01-19T18:39:10Z2005PIMENTEL, Patrícia Mendonça; MARTINELLI, Antonio Eduardo; MELO, Dulce Maria de Araújo; PEDROSA, Anne Michelle Garrido; CUNHA, Jardel Dantas; SILVA JÚNIOR, Carlos Neco da. Pechini synthesis and microstructure of nickel-doped copper chromites. Materials Research, [S.L.], v. 8, n. 2, p. 221-224, jun. 2005. Disponível em: https://www.scielo.br/scielo.php?pid=S1516-14392005000200024&script=sci_abstract&tlng=en. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1590/s1516-14392005000200024.1516-14391980-5373https://repositorio.ufrn.br/handle/123456789/3128310.1590/S1516-14392005000200024ScieloAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessChromitesCeramic pigmentsPechini methodSpinelPechini synthesis and microstructure of nickel-doped copper chromitesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSpinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments. The resulting powders were characterized by thermogravimetric analysis, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size analysis and BET surface area measurements. The formation of spinel took place upon calcination at 700 °C. IR spectroscopy revealed the presence of N1 and N2 bands, typical of spinel structures, broadened by the presence of more than one cationic species in the structure. The specific area of the resulting powder decreased from 24.7 to 1.4 m2 g-1 as the calcination temperature increased from 700 to 900 °C. Microstructural analyses revealed the presence of crystalline spinel as the only phase present in powders calcined at 900 °C. 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dc.title.pt_BR.fl_str_mv Pechini synthesis and microstructure of nickel-doped copper chromites
title Pechini synthesis and microstructure of nickel-doped copper chromites
spellingShingle Pechini synthesis and microstructure of nickel-doped copper chromites
Pimentel, Patrícia Mendonça
Chromites
Ceramic pigments
Pechini method
Spinel
title_short Pechini synthesis and microstructure of nickel-doped copper chromites
title_full Pechini synthesis and microstructure of nickel-doped copper chromites
title_fullStr Pechini synthesis and microstructure of nickel-doped copper chromites
title_full_unstemmed Pechini synthesis and microstructure of nickel-doped copper chromites
title_sort Pechini synthesis and microstructure of nickel-doped copper chromites
author Pimentel, Patrícia Mendonça
author_facet Pimentel, Patrícia Mendonça
Martinelli, Antonio Eduardo
Melo, Dulce Maria de Araújo
Pedrosa, Anne Michelle Garrido
Cunha, Jardel Dantas
Silva Júnior, Carlos Neco da
author_role author
author2 Martinelli, Antonio Eduardo
Melo, Dulce Maria de Araújo
Pedrosa, Anne Michelle Garrido
Cunha, Jardel Dantas
Silva Júnior, Carlos Neco da
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Pimentel, Patrícia Mendonça
Martinelli, Antonio Eduardo
Melo, Dulce Maria de Araújo
Pedrosa, Anne Michelle Garrido
Cunha, Jardel Dantas
Silva Júnior, Carlos Neco da
dc.subject.por.fl_str_mv Chromites
Ceramic pigments
Pechini method
Spinel
topic Chromites
Ceramic pigments
Pechini method
Spinel
description Spinel-type solid solutions were synthesized by the Pechini method and calcined between 500 and 900 °C for 4 hours and at 900 °C for 8 hours to produce ceramic pigments. The resulting powders were characterized by thermogravimetric analysis, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size analysis and BET surface area measurements. The formation of spinel took place upon calcination at 700 °C. IR spectroscopy revealed the presence of N1 and N2 bands, typical of spinel structures, broadened by the presence of more than one cationic species in the structure. The specific area of the resulting powder decreased from 24.7 to 1.4 m2 g-1 as the calcination temperature increased from 700 to 900 °C. Microstructural analyses revealed the presence of crystalline spinel as the only phase present in powders calcined at 900 °C. Colorimetric analyses using L*a*b* coordinates and UV-visible spectroscopy revealed that the pigment was predominantly black
publishDate 2005
dc.date.issued.fl_str_mv 2005
dc.date.accessioned.fl_str_mv 2021-01-19T18:39:10Z
dc.date.available.fl_str_mv 2021-01-19T18:39:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.citation.fl_str_mv PIMENTEL, Patrícia Mendonça; MARTINELLI, Antonio Eduardo; MELO, Dulce Maria de Araújo; PEDROSA, Anne Michelle Garrido; CUNHA, Jardel Dantas; SILVA JÚNIOR, Carlos Neco da. Pechini synthesis and microstructure of nickel-doped copper chromites. Materials Research, [S.L.], v. 8, n. 2, p. 221-224, jun. 2005. Disponível em: https://www.scielo.br/scielo.php?pid=S1516-14392005000200024&script=sci_abstract&tlng=en. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1590/s1516-14392005000200024.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/31283
dc.identifier.issn.none.fl_str_mv 1516-1439
1980-5373
dc.identifier.doi.none.fl_str_mv 10.1590/S1516-14392005000200024
identifier_str_mv PIMENTEL, Patrícia Mendonça; MARTINELLI, Antonio Eduardo; MELO, Dulce Maria de Araújo; PEDROSA, Anne Michelle Garrido; CUNHA, Jardel Dantas; SILVA JÚNIOR, Carlos Neco da. Pechini synthesis and microstructure of nickel-doped copper chromites. Materials Research, [S.L.], v. 8, n. 2, p. 221-224, jun. 2005. Disponível em: https://www.scielo.br/scielo.php?pid=S1516-14392005000200024&script=sci_abstract&tlng=en. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1590/s1516-14392005000200024.
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