Preparation of novel blue phosphate pigments in imitation of turquoise

Detalhes bibliográficos
Autor(a) principal: Onoda,H.
Data de Publicação: 2019
Outros Autores: Sasaki,R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000400641
Resumo: Abstract As a novel blue pigment, various hydrated copper aluminum phosphate imitating turquoise, CuAl6(PO4)4(OH)8.4H2O, were prepared by mixing copper nitrate solution, aluminum nitrate solution, phosphoric acid, and sodium hydroxide solution. Samples with similar chemical composition with turquoise were prepared. The obtained powders were evaluated with X-ray diffraction, infrared spectra, ultraviolet-visible reflectance spectra, and L*a*b* color space. Further, other related compositions were also investigated. Samples heated at low temperature were light blue powder. By heating at 700 ºC, the color of materials changed to deep green. Samples with high copper ratio indicated lower L* value and small a* and b* values. The low copper ratio was suitable to obtain light blue and deep green phosphate pigments.
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spelling Preparation of novel blue phosphate pigments in imitation of turquoisephosphate pigmentturquoisecolorAbstract As a novel blue pigment, various hydrated copper aluminum phosphate imitating turquoise, CuAl6(PO4)4(OH)8.4H2O, were prepared by mixing copper nitrate solution, aluminum nitrate solution, phosphoric acid, and sodium hydroxide solution. Samples with similar chemical composition with turquoise were prepared. The obtained powders were evaluated with X-ray diffraction, infrared spectra, ultraviolet-visible reflectance spectra, and L*a*b* color space. Further, other related compositions were also investigated. Samples heated at low temperature were light blue powder. By heating at 700 ºC, the color of materials changed to deep green. Samples with high copper ratio indicated lower L* value and small a* and b* values. The low copper ratio was suitable to obtain light blue and deep green phosphate pigments.Associação Brasileira de Cerâmica2019-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000400641Cerâmica v.65 n.376 2019reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132019653762807info:eu-repo/semantics/openAccessOnoda,H.Sasaki,R.eng2019-11-11T00:00:00Zoai:scielo:S0366-69132019000400641Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2019-11-11T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Preparation of novel blue phosphate pigments in imitation of turquoise
title Preparation of novel blue phosphate pigments in imitation of turquoise
spellingShingle Preparation of novel blue phosphate pigments in imitation of turquoise
Onoda,H.
phosphate pigment
turquoise
color
title_short Preparation of novel blue phosphate pigments in imitation of turquoise
title_full Preparation of novel blue phosphate pigments in imitation of turquoise
title_fullStr Preparation of novel blue phosphate pigments in imitation of turquoise
title_full_unstemmed Preparation of novel blue phosphate pigments in imitation of turquoise
title_sort Preparation of novel blue phosphate pigments in imitation of turquoise
author Onoda,H.
author_facet Onoda,H.
Sasaki,R.
author_role author
author2 Sasaki,R.
author2_role author
dc.contributor.author.fl_str_mv Onoda,H.
Sasaki,R.
dc.subject.por.fl_str_mv phosphate pigment
turquoise
color
topic phosphate pigment
turquoise
color
description Abstract As a novel blue pigment, various hydrated copper aluminum phosphate imitating turquoise, CuAl6(PO4)4(OH)8.4H2O, were prepared by mixing copper nitrate solution, aluminum nitrate solution, phosphoric acid, and sodium hydroxide solution. Samples with similar chemical composition with turquoise were prepared. The obtained powders were evaluated with X-ray diffraction, infrared spectra, ultraviolet-visible reflectance spectra, and L*a*b* color space. Further, other related compositions were also investigated. Samples heated at low temperature were light blue powder. By heating at 700 ºC, the color of materials changed to deep green. Samples with high copper ratio indicated lower L* value and small a* and b* values. The low copper ratio was suitable to obtain light blue and deep green phosphate pigments.
publishDate 2019
dc.date.none.fl_str_mv 2019-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000400641
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000400641
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132019653762807
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.65 n.376 2019
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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