Environmental-friendly red-orange ceramic pigment based on Pr and Fe co-doped Y2Zr2O7
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Altres documents de l'autoria: Jovaní, Marc; Fortuño-Morte, Maria; Beltrán Mir, Héctor; Cordoncillo, Eloisa
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INVESTIGACIONMetadades
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Environmental-friendly red-orange ceramic pigment based on Pr and Fe co-doped Y2Zr2O7Data de publicació
2017-12Editor
ElsevierTipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://www.sciencedirect.com/science/article/pii/S0955221917308154Versió
info:eu-repo/semantics/draftParaules clau / Matèries
Resum
A new environmental-friendly red-orange ceramic pigment based on the general formula Y2-xPrxZr2-yFeyO7-δ was
prepared by polymeric sol-gel method at 1400 °C. The solid solution range with defect fluorite structure ... [+]
A new environmental-friendly red-orange ceramic pigment based on the general formula Y2-xPrxZr2-yFeyO7-δ was
prepared by polymeric sol-gel method at 1400 °C. The solid solution range with defect fluorite structure was
determined by XRD and SEM/EDX. The oxidation states of the dopants were studied by UV/Vis absorption
measurements, XPS and photoluminescence, and a possible redox mechanism was proposed. The colour of the
pigment was determined by CIEL*a*b* chromatic coordinates in powder, glass, paint and polymer. All compositions presented a good stability in powder and in glass, the Y1.75Pr0.25Zr1.75Fe0.25O6.875 composition being
the best red good colouration. This composition also showed an optimal NIR reflectance 80% in paint to be
applied as “cool pigment” for roof isolation. The solid solutions were also tested in PMMA showing a good
stability in the sunlight. Therefore, a red-orange environmental-friendly pigment was synthesised with potential
applications in the field of the ceramic tiles, cool roofing materials and polymers. [-]
Proyecto de investigación
Universidad Jaume I (Project UJI-B2016-38); Ministerio de Economia, Industria y Competitividad (Project MAT2016-80410-P)Drets d'accés
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