Structural characterization and colour of MgxCu3-xV2O8 (0<=x<=3) and MgyCu2-yV2O7 (0<=y<=2) compositions
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Título
Structural characterization and colour of MgxCu3-xV2O8 (0<=x<=3) and MgyCu2-yV2O7 (0<=y<=2) compositionsFecha de publicación
2015Editor
SpringerCita bibliográfica
TENA, M. A.; GARCÍA-GRANDA, Santiago. Structural characterization and colour of MgxCu3-xV2O8 (0≤ x≤ 3) and MgyCu2-yV2O7 (0≤ y≤ 2) compositions. SpringerPlus, 2015, vol. 4, no 1, p. 163.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://download.springer.com/static/pdf/596/art%253A10.1186%252Fs40064-015-0908- ...Palabras clave / Materias
Resumen
In this study, MgxCu3-xV2O8 (0 ≤ x ≤ 3) and MgyCu2-yV2O7 (0 ≤ y ≤ 2) compositions were synthesized by the
chemical coprecipitation method and characterized by X-ray diffraction, UV–vis-NIR spectroscopy and CIE L* a* ... [+]
In this study, MgxCu3-xV2O8 (0 ≤ x ≤ 3) and MgyCu2-yV2O7 (0 ≤ y ≤ 2) compositions were synthesized by the
chemical coprecipitation method and characterized by X-ray diffraction, UV–vis-NIR spectroscopy and CIE L* a* b*
parameters measurements. Melting points of compounds Cu3V2O8 and Cu2V2O7 are 780°C and 790°C, respectively.
The addition of small amounts of Mg (II), MgxCu3-xV2O8 (x < 1.0) and MgyCu2-yV2O7 (y < 0.5) fused compositions,
was not sufficient to stabilize structures at 800°C. For the Mg2CuV2O8 (x = 2.0) composition fired at 800°C, Mg (II)
incorporated into the monoclinic Cu3V2O8 structure stabilizes this crystalline phase. At 1000°C, orthorhombic
Mg3V2O8 structure from this composition was obtained. Solid solutions with orthorhombic symmetry were detected
from the prepared compositions fired at 1000°C when 1.0 ≤ x ≤ 3.0. The difference of coloration of Cu, Mg vanadates
might be explained by the presence of a strong charge transfer band in visible spectra. [-]
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SpringerPlus, 2015, vol. 4, no 1Derechos de acceso
© 2015 Tena and García-Granda; licensee Springer.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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