New red-shade environmental-friendly multifunctional pigment based on Tb and Fe doped Y2Zr2O7 for ceramic applications and cool roof coatings
Impacte
Scholar |
Altres documents de l'autoria: Jovaní, Marc; Sanz, Ana; Beltrán Mir, Héctor; Cordoncillo, Eloisa
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
comunitat-uji-handle4:
INVESTIGACIONAquest recurs és restringit
http://dx.doi.org/10.1016/j.dyepig.2016.05.042 |
Metadades
Títol
New red-shade environmental-friendly multifunctional pigment based on Tb and Fe doped Y2Zr2O7 for ceramic applications and cool roof coatingsData de publicació
2016Editor
ElsevierISSN
0143-7208; 1873-3743Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S0143720816302327Paraules clau / Matèries
Resum
A new red-shade environmental friendly ceramic pigment with the general formula Y2−xTbxZr2−yFeyO7−δ [x = 0, 0.25 and y = 0.15, 0.25, 0.35] was prepared by a polymeric sol-gel process and after calcination at 1300 °C ... [+]
A new red-shade environmental friendly ceramic pigment with the general formula Y2−xTbxZr2−yFeyO7−δ [x = 0, 0.25 and y = 0.15, 0.25, 0.35] was prepared by a polymeric sol-gel process and after calcination at 1300 °C for 12 h. The solid solution range with defect fluorite structure was determined by XRD. The presence of terbium ions promoted the incorporation of iron ions in the structure. The evolution of the colour was studied by UV/Vis absorption measurements and CIELab chromatic coordinates were determined. The colour was related to the oxidation states of the terbium and iron ions studied by XPS and photoluminescence. Pigments presented the best chromatic coordinates when the amount of Fe(III) and Tb(IV) ions were higher. The sample with good red colouration (x = 0.25, y = 0.35) was tested with an industrial frit, presenting slightly better chromatic coordinates to those of the commercial ceramic pigment currently used. The pigment also showed an optimal NIR reflectance to be applied as “cool pigment” for roof isolation. [-]
Publicat a
Dyes and Pigments 133 (2016) 33e40Drets d'accés
© 2016 Elsevier Ltd. All rights reserved.
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