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Publicação:
Lanthanum cobaltite black pigments with perovskite structure

dc.contributor.authorMelo, D.
dc.contributor.authorVieira, F. T G
dc.contributor.authorCosta, T. C C
dc.contributor.authorSoledade, L. E B
dc.contributor.authorPaskocimas, C. A.
dc.contributor.authorMelo, D. M A
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorMarinho, E. P.
dc.contributor.authorSouza, A. G.
dc.contributor.authorSantos, I. M G
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCentro Acadêmico Do Agreste
dc.date.accessioned2014-05-27T11:29:29Z
dc.date.available2014-05-27T11:29:29Z
dc.date.issued2013-05-09
dc.description.abstractIn this work La1-xCaxCoO3 (x = 0-0.4) pigments were synthesized by the polymeric precursor method with heat treatments at 700, 800 and 900 C for 4 h. The powders were characterized by colorimetry, UV-vis spectroscopy and powder X-ray diffraction (XRD). The X-ray diffraction patterns showed the presence of a single phase perovskite, changing its structure from rhombohedral to cubic, when calcium was added to the lattice. All of the pigments had a black colour with a strong absorption over the whole of the visible spectrum as a consequence of the different oxidation states of cobalt and the high short-range disorder. The substitution of Ca2+ for La3+ did not influence the pigment colour but decreased its final cost. © 2013 Elsevier Ltd. All rights reserved.en
dc.description.affiliationLaboratório de Combustíveis e Materiais Departamento de Química Universidade Federal da Paraíba, João Pessoa, PB
dc.description.affiliationDepartamento de Engenharia de Materiais/CT Universidade Federal Do Rio Grande Do Norte Campus i, Natal, RN
dc.description.affiliationDepartamento de Química Universidade Federal Do Rio Grande Do Norte Campus i, Natal, RN
dc.description.affiliationCMDMC Instituto de Química UNESP-Araraquara, Araraquara, SP
dc.description.affiliationCentro Acadêmico Do Agreste, Br 104, km 62, Nova Caruaru, Caruaru, PE
dc.description.affiliationUnespCMDMC Instituto de Química UNESP-Araraquara, Araraquara, SP
dc.format.extent459-463
dc.identifierhttp://dx.doi.org/10.1016/j.dyepig.2013.03.012
dc.identifier.citationDyes and Pigments, v. 98, n. 3, p. 459-463, 2013.
dc.identifier.doi10.1016/j.dyepig.2013.03.012
dc.identifier.issn0143-7208
dc.identifier.scopus2-s2.0-84877066970
dc.identifier.urihttp://hdl.handle.net/11449/75374
dc.language.isoeng
dc.relation.ispartofDyes and Pigments
dc.relation.ispartofjcr3.767
dc.relation.ispartofsjr0,819
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBlack pigment
dc.subjectCobaltite
dc.subjectLanthanum
dc.subjectPerovskite
dc.subjectPolymeric precursor method
dc.subjectSolid solution
dc.subjectLanthanum cobaltite
dc.subjectPerovskite structures
dc.subjectPolymeric precursor methods
dc.subjectPowder X ray diffraction
dc.subjectStrong absorptions
dc.subjectUV-vis spectroscopy
dc.subjectAbsorption spectroscopy
dc.subjectCalcium
dc.subjectCobalt compounds
dc.subjectColor
dc.subjectLanthanum alloys
dc.subjectPolymers
dc.subjectSolid solutions
dc.subjectUltraviolet visible spectroscopy
dc.subjectX ray diffraction
dc.subjectX ray powder diffraction
dc.titleLanthanum cobaltite black pigments with perovskite structureen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQpt

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