Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route
PbCrO4 and Pb2CrO5 particles were synthesized by the polymeric precursor method. Structural and microstructural properties of the particles were characterized by scanning electron microscopy with field emission gun, X-ray diffraction, and Raman spectroscopy techniques. The diffuse reflectance techni...
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ri-123456789-320212021-04-04T08:37:11Z Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route Propriedades microestruturais, estruturais e ópticas de nanopartículas de pigmentos de PbO-CrO3 sintetizadas por rota soft Araújo, V. D. Andreeta, M. R. B. Maia, L. J. Q. Nascimento, Rubens Maribondo do Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio Paskocimas, Carlos Alberto Bernardi, Maria Inês Basso Nanopartículas PbCrO4 Propriedades estruturais Propriedades microestruturais Propriedades ópticas PbCrO4 and Pb2CrO5 particles were synthesized by the polymeric precursor method. Structural and microstructural properties of the particles were characterized by scanning electron microscopy with field emission gun, X-ray diffraction, and Raman spectroscopy techniques. The diffuse reflectance technique was employed to study the optical properties in the 400-700 nm range. The optical bandgap of the samples was obtained indirectly. Colorimetric coordinates L*, a*, b* were calculated for the pigment powders as a function of the heat treatment (400-700 ºC). The powders displayed colors ranging from green to red. X-ray diffraction patterns showed the presence of monoclinic PbCrO4 phase in green samples, while red powders had a monoclinic Pb2CrO5 phase structure. The Raman spectra of the PbCrO4 and Pb2CrO5 powders were in good agreement with those reported in the literature. The synthesized compounds can be used as green and red pigments with high thermal stability Partículas de PbCrO4 and Pb2CrO5 foram sintetizadas pelo método do precursor polimérico. Propriedades estruturais e microestruturais das partículas forma caracterizadas por técnicas de microscopia eletrônica de varredura, difração de raios X e espectroscopia Raman. A técnica de refletância difusa foi empregada para o estudo das propriedades ópticas na faixa 400-700 nm. O bandgap óptico foi obtido indiretamente. As coordenadas colorimétricas L*, a*, b* foram calculadas para os pós de pigmento em função do tratamento térmico (400-700 ºC). Os pós apresentaram cores do verde ao vermelho. Os difratogramas de raios X mostraram a presença da fase PbCrO4 monoclínica nas amostras verdes, enquanto os pós vermelhos apresentaram a fase Pb2CrO5 monoclínica. Os espectros Raman dos pós de PbCrO4 e Pb2CrO5 estão em concordância com os reportados. Os compostos sintetizados podem ser usados como pigmentos verdes e vermelhos com alta estabilidade térmica 2021-03-29T18:31:59Z 2021-03-29T18:31:59Z 2015 article ARAðJO, V. D.; ANDREETA, M. R. B.; MAIA, L. J. Q.; NASCIMENTO, R. M.; MOTTA, F. V.; BOMIO, M. R. D.; PASKOCIMAS, C. A.; BERNARDI, M. I. B.. Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route. Cerâmica, [S.L.], v. 61, n. 357, p. 118-125, mar. 2015. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132015000100015&lng=en&tlng=en. Acesso em: 10 fev. 2021. http://dx.doi.org/10.1590/0366-69132015613571853 0366-6913 https://repositorio.ufrn.br/handle/123456789/32021 10.1590/0366-69132015613571853 en Attribution-NonCommercial 3.0 Brazil http://creativecommons.org/licenses/by-nc/3.0/br/ application/pdf Cerâmica |
| institution |
Repositório Institucional |
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RI - UFRN |
| language |
English |
| topic |
Nanopartículas PbCrO4 Propriedades estruturais Propriedades microestruturais Propriedades ópticas |
| spellingShingle |
Nanopartículas PbCrO4 Propriedades estruturais Propriedades microestruturais Propriedades ópticas Araújo, V. D. Andreeta, M. R. B. Maia, L. J. Q. Nascimento, Rubens Maribondo do Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio Paskocimas, Carlos Alberto Bernardi, Maria Inês Basso Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| description |
PbCrO4 and Pb2CrO5 particles were synthesized by the polymeric precursor method. Structural and microstructural properties of the particles were characterized by scanning electron microscopy with field emission gun, X-ray diffraction, and Raman spectroscopy techniques. The diffuse reflectance technique was employed to study the optical properties in the 400-700 nm range. The optical bandgap of the samples was obtained indirectly. Colorimetric coordinates L*, a*, b* were calculated for the pigment powders as a function of the heat treatment (400-700 ºC). The powders displayed colors ranging from green to red. X-ray diffraction patterns showed the presence of monoclinic PbCrO4 phase in green samples, while red powders had a monoclinic Pb2CrO5 phase structure. The Raman spectra of the PbCrO4 and Pb2CrO5 powders were in good agreement with those reported in the literature. The synthesized compounds can be used as green and red pigments with high thermal stability |
| format |
article |
| author |
Araújo, V. D. Andreeta, M. R. B. Maia, L. J. Q. Nascimento, Rubens Maribondo do Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio Paskocimas, Carlos Alberto Bernardi, Maria Inês Basso |
| author_facet |
Araújo, V. D. Andreeta, M. R. B. Maia, L. J. Q. Nascimento, Rubens Maribondo do Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio Paskocimas, Carlos Alberto Bernardi, Maria Inês Basso |
| author_sort |
Araújo, V. D. |
| title |
Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| title_short |
Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| title_full |
Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| title_fullStr |
Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| title_full_unstemmed |
Microstructural, structural and optical properties of nanoparticles of PbO-CrO3 pigment synthesized by a soft route |
| title_sort |
microstructural, structural and optical properties of nanoparticles of pbo-cro3 pigment synthesized by a soft route |
| publisher |
Cerâmica |
| publishDate |
2021 |
| url |
https://repositorio.ufrn.br/handle/123456789/32021 |
| work_keys_str_mv |
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