Synthesis of LnCrO3 perovskites and their color properties
ABSTRACT The aim of this current study was to prepare LnCrO3 (Ln= La, Pr, Nd) in order to investigate the influence of lanthanides ions on the structural and color properties of the chromites. The powders were synthesized by the microwave-assisted auto-combustion method using urea as a fuel. After c...
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description | ABSTRACT The aim of this current study was to prepare LnCrO3 (Ln= La, Pr, Nd) in order to investigate the influence of lanthanides ions on the structural and color properties of the chromites. The powders were synthesized by the microwave-assisted auto-combustion method using urea as a fuel. After calcination at 800 and 1000 °C, characterizations were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis spectroscopy and colorimetric analysis using CIE-Lab system. All the samples are considered single phase and nanocrystalline. There were not significant changes in the colorimetric parameters doped with lanthanides ions. The chromites presented colors with greenish gray tones which became darker in the calcined powders at higher temperatures. No change in the pigment color was observed when incorporated into transparent glaze.
RESUMO O objetivo deste estudo foi preparar LnCrO3 (Ln = La, Pr, Nd) para investigar a influência de íons lantanídeos nas propriedades estruturais e de cor dos cromitos. Os pós foram sintetizados pelo método de auto-combustão assistida por micro-ondas, usando a uréia como combustível. Após a calcinação a 800 e 1000 ° C, as caracterizações foram realizadas por difração de raios X, microscopia eletrônica de varredura, microscopia eletrônica de transmissão, espectroscopia UV-vis e análise colorimétrica usando o sistema CIE-Lab. Todas as amostras são monofásicas e nanocristalinas. Não houve alterações significativas nos parâmetros colorimétricos dopados com íons lantanídeos. As cromitas apresentaram cores com tons de cinza que se tornaram mais escuros nos pós calcinados a temperaturas mais altas. Nenhuma mudança na cor do pigmento foi observada quando incorporada ao esmalte transparente. |
doi_str_mv | 10.1590/s1517-707620220002.1368 |
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RESUMO O objetivo deste estudo foi preparar LnCrO3 (Ln = La, Pr, Nd) para investigar a influência de íons lantanídeos nas propriedades estruturais e de cor dos cromitos. Os pós foram sintetizados pelo método de auto-combustão assistida por micro-ondas, usando a uréia como combustível. Após a calcinação a 800 e 1000 ° C, as caracterizações foram realizadas por difração de raios X, microscopia eletrônica de varredura, microscopia eletrônica de transmissão, espectroscopia UV-vis e análise colorimétrica usando o sistema CIE-Lab. Todas as amostras são monofásicas e nanocristalinas. Não houve alterações significativas nos parâmetros colorimétricos dopados com íons lantanídeos. As cromitas apresentaram cores com tons de cinza que se tornaram mais escuros nos pós calcinados a temperaturas mais altas. Nenhuma mudança na cor do pigmento foi observada quando incorporada ao esmalte transparente.</description><identifier>ISSN: 1517-7076</identifier><identifier>EISSN: 1517-7076</identifier><identifier>DOI: 10.1590/s1517-707620220002.1368</identifier><language>eng ; por</language><publisher>Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro; em cooperação com a Associação Brasileira do Hidrogênio, ABH2</publisher><subject>CONSTRUCTION & BUILDING TECHNOLOGY ; MATERIALS SCIENCE, MULTIDISCIPLINARY ; METALLURGY & METALLURGICAL ENGINEERING</subject><ispartof>Matéria, 2022, Vol.27 (2)</ispartof><rights>This work is licensed under a Creative Commons Attribution 4.0 International License.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c1368-c02df5a18666a11711b6b4b4753195abc9204c2d56083deb783248314b641673</cites><orcidid>0000-0002-3080-0688 ; 0000-0002-6662-5789 ; 0000-0001-6603-4754 ; 0000-0002-2726-1863 ; 0000-0002-5740-6103</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,781,785,865,886,4025,27928,27929,27930</link.rule.ids></links><search><creatorcontrib>Pimentel, Patrícia Mendonça</creatorcontrib><creatorcontrib>Ferreira, Kaique Matheus Barbosa</creatorcontrib><creatorcontrib>Dantas, Gerbeson Carlos Batista</creatorcontrib><creatorcontrib>Oliveira, Rosane Maria Pessoa Betânio</creatorcontrib><creatorcontrib>Mello, Dulce Maria de Araújo</creatorcontrib><title>Synthesis of LnCrO3 perovskites and their color properties</title><title>Matéria</title><addtitle>Matéria (Rio J.)</addtitle><description>ABSTRACT The aim of this current study was to prepare LnCrO3 (Ln= La, Pr, Nd) in order to investigate the influence of lanthanides ions on the structural and color properties of the chromites. The powders were synthesized by the microwave-assisted auto-combustion method using urea as a fuel. After calcination at 800 and 1000 °C, characterizations were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis spectroscopy and colorimetric analysis using CIE-Lab system. All the samples are considered single phase and nanocrystalline. There were not significant changes in the colorimetric parameters doped with lanthanides ions. The chromites presented colors with greenish gray tones which became darker in the calcined powders at higher temperatures. No change in the pigment color was observed when incorporated into transparent glaze.
RESUMO O objetivo deste estudo foi preparar LnCrO3 (Ln = La, Pr, Nd) para investigar a influência de íons lantanídeos nas propriedades estruturais e de cor dos cromitos. Os pós foram sintetizados pelo método de auto-combustão assistida por micro-ondas, usando a uréia como combustível. Após a calcinação a 800 e 1000 ° C, as caracterizações foram realizadas por difração de raios X, microscopia eletrônica de varredura, microscopia eletrônica de transmissão, espectroscopia UV-vis e análise colorimétrica usando o sistema CIE-Lab. Todas as amostras são monofásicas e nanocristalinas. Não houve alterações significativas nos parâmetros colorimétricos dopados com íons lantanídeos. As cromitas apresentaram cores com tons de cinza que se tornaram mais escuros nos pós calcinados a temperaturas mais altas. Nenhuma mudança na cor do pigmento foi observada quando incorporada ao esmalte transparente.</description><subject>CONSTRUCTION & BUILDING TECHNOLOGY</subject><subject>MATERIALS SCIENCE, MULTIDISCIPLINARY</subject><subject>METALLURGY & METALLURGICAL ENGINEERING</subject><issn>1517-7076</issn><issn>1517-7076</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNplUGFLwzAQDaLgnP4G8wc675I0af0mRZ0w2Ifte2jTFDNnU3JT2L-3ZSID4eAO3r177x1j9wgLzEt4IMzRZAaMFiAEAIgFSl1csNkfcHk2X7Mboh2AlkrAjD1ujv3h3VMgHju-6qu0lnzwKX7TRzh44nXf8nEhJO7iPiY-pDjCh-Dpll119Z783W-fs-3L87ZaZqv161v1tMrc5CNzINour7HQWteIBrHRjWqUySWWed24UoByos01FLL1jSmkUIVE1WiF2sg5W5zOkgt-H-0ufqV-1LObKZM9Dz6W0CPBnAguRaLkOzuk8Fmno0Ww08ss_WPayar8Act-Wso</recordid><startdate>2022</startdate><enddate>2022</enddate><creator>Pimentel, Patrícia Mendonça</creator><creator>Ferreira, Kaique Matheus Barbosa</creator><creator>Dantas, Gerbeson Carlos Batista</creator><creator>Oliveira, Rosane Maria Pessoa Betânio</creator><creator>Mello, Dulce Maria de Araújo</creator><general>Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro; em cooperação com a Associação Brasileira do Hidrogênio, ABH2</general><scope>AAYXX</scope><scope>CITATION</scope><scope>GPN</scope><orcidid>https://orcid.org/0000-0002-3080-0688</orcidid><orcidid>https://orcid.org/0000-0002-6662-5789</orcidid><orcidid>https://orcid.org/0000-0001-6603-4754</orcidid><orcidid>https://orcid.org/0000-0002-2726-1863</orcidid><orcidid>https://orcid.org/0000-0002-5740-6103</orcidid></search><sort><creationdate>2022</creationdate><title>Synthesis of LnCrO3 perovskites and their color properties</title><author>Pimentel, Patrícia Mendonça ; Ferreira, Kaique Matheus Barbosa ; Dantas, Gerbeson Carlos Batista ; Oliveira, Rosane Maria Pessoa Betânio ; Mello, Dulce Maria de Araújo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1368-c02df5a18666a11711b6b4b4753195abc9204c2d56083deb783248314b641673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; por</language><creationdate>2022</creationdate><topic>CONSTRUCTION & BUILDING TECHNOLOGY</topic><topic>MATERIALS SCIENCE, MULTIDISCIPLINARY</topic><topic>METALLURGY & METALLURGICAL ENGINEERING</topic><toplevel>online_resources</toplevel><creatorcontrib>Pimentel, Patrícia Mendonça</creatorcontrib><creatorcontrib>Ferreira, Kaique Matheus Barbosa</creatorcontrib><creatorcontrib>Dantas, Gerbeson Carlos Batista</creatorcontrib><creatorcontrib>Oliveira, Rosane Maria Pessoa Betânio</creatorcontrib><creatorcontrib>Mello, Dulce Maria de Araújo</creatorcontrib><collection>CrossRef</collection><collection>SciELO</collection><jtitle>Matéria</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pimentel, Patrícia Mendonça</au><au>Ferreira, Kaique Matheus Barbosa</au><au>Dantas, Gerbeson Carlos Batista</au><au>Oliveira, Rosane Maria Pessoa Betânio</au><au>Mello, Dulce Maria de Araújo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis of LnCrO3 perovskites and their color properties</atitle><jtitle>Matéria</jtitle><addtitle>Matéria (Rio J.)</addtitle><date>2022</date><risdate>2022</risdate><volume>27</volume><issue>2</issue><issn>1517-7076</issn><eissn>1517-7076</eissn><abstract>ABSTRACT The aim of this current study was to prepare LnCrO3 (Ln= La, Pr, Nd) in order to investigate the influence of lanthanides ions on the structural and color properties of the chromites. The powders were synthesized by the microwave-assisted auto-combustion method using urea as a fuel. After calcination at 800 and 1000 °C, characterizations were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis spectroscopy and colorimetric analysis using CIE-Lab system. All the samples are considered single phase and nanocrystalline. There were not significant changes in the colorimetric parameters doped with lanthanides ions. The chromites presented colors with greenish gray tones which became darker in the calcined powders at higher temperatures. No change in the pigment color was observed when incorporated into transparent glaze.
RESUMO O objetivo deste estudo foi preparar LnCrO3 (Ln = La, Pr, Nd) para investigar a influência de íons lantanídeos nas propriedades estruturais e de cor dos cromitos. Os pós foram sintetizados pelo método de auto-combustão assistida por micro-ondas, usando a uréia como combustível. Após a calcinação a 800 e 1000 ° C, as caracterizações foram realizadas por difração de raios X, microscopia eletrônica de varredura, microscopia eletrônica de transmissão, espectroscopia UV-vis e análise colorimétrica usando o sistema CIE-Lab. Todas as amostras são monofásicas e nanocristalinas. Não houve alterações significativas nos parâmetros colorimétricos dopados com íons lantanídeos. As cromitas apresentaram cores com tons de cinza que se tornaram mais escuros nos pós calcinados a temperaturas mais altas. Nenhuma mudança na cor do pigmento foi observada quando incorporada ao esmalte transparente.</abstract><pub>Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro; em cooperação com a Associação Brasileira do Hidrogênio, ABH2</pub><doi>10.1590/s1517-707620220002.1368</doi><orcidid>https://orcid.org/0000-0002-3080-0688</orcidid><orcidid>https://orcid.org/0000-0002-6662-5789</orcidid><orcidid>https://orcid.org/0000-0001-6603-4754</orcidid><orcidid>https://orcid.org/0000-0002-2726-1863</orcidid><orcidid>https://orcid.org/0000-0002-5740-6103</orcidid><oa>free_for_read</oa></addata></record> |
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title | Synthesis of LnCrO3 perovskites and their color properties |
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