Synthesis and structural characterization of CaMg0.5CoxNi0.5-xSi2O6 (0 ≤ x ≤ 0.5) solid solutions as a colouring substance
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INVESTIGACIONMetadatos
Título
Synthesis and structural characterization of CaMg0.5CoxNi0.5-xSi2O6 (0 ≤ x ≤ 0.5) solid solutions as a colouring substanceAutoría
Fecha de publicación
2024-03-13Editor
Elsevier LtdISSN
0272-8842Cita bibliográfica
M.A. Tena, Mohammed S.M. Abdelbaky, Camino Trobajo, José R. García, Santiago Garcia-Granda, Synthesis and structural characterization of CaMg0.5CoxNi0.5-xSi2O6 (0 ≤ x ≤ 0.5) solid solutions as a colouring substance, Ceramics International, 2024, , ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2024.03.162.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0272884224011088Versión
info:eu-repo/semantics/publishedVersionResumen
In this study, CaMg0.5CoxNi0.5-xSi2O6 (0.0 ≤ x ≤ 0.5) solid solutions with a diopside structure were prepared to reduce the cobalt and nickel amounts compared to M2SiO4 or MgMSiO4 (M = Co, Ni) compounds or CaCoxNi1- ... [+]
In this study, CaMg0.5CoxNi0.5-xSi2O6 (0.0 ≤ x ≤ 0.5) solid solutions with a diopside structure were prepared to reduce the cobalt and nickel amounts compared to M2SiO4 or MgMSiO4 (M = Co, Ni) compounds or CaCoxNi1-xSi2O6 solid solutions. Colloidal gels were obtained by adding an ammonia aqueous solution to the suspensions of precursors in aqua until pH = 10. Diopside structure began to develop at 800 °C and at 1000–1200 °C crystallinity and pink colour of materials (x ≠ 0) are optimal. In both CaMg0.5CoxNi0.5-xSi2O6 (0.0 ≤ x ≤ 0.5) and MgCoxNi1-xSiO4 (0.0 ≤ x ≤ 1.0) solid solutions with diopside and olivine structures the position of the third transition of octahedral Co(II), 4T1 → 4T1(P), is centred into the green absorption range and the observed colour is pink. A higher red amount in diopside than in olivine structure can be explained by the minor width of band of this third transition (minor distortion of octahedral M1 site) and shorter mean M1-O distances (M = Ni, Co). [-]
Publicado en
Ceramics International,13 March 2024Entidad financiadora
Agencia Estatal de Investigación | Principado de Asturias | CrysFact Network
Código del proyecto o subvención
PID2020-113558RB-C41 | IDI/2021/50997 | Red2018-10102574-T (AEI/MCI)
Derechos de acceso
info:eu-repo/semantics/openAccess
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