Environmental blue CoAl2O4 pigment co-doped by Zn2+ and Mg2+: synthesis, structure and optical properties

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dc.contributor.authorPeng, Xiaojin
dc.contributor.authorCheng, Jinshu
dc.contributor.authorYuan, Jian
dc.contributor.authorJin, Na
dc.contributor.authorKang, Junfeng
dc.contributor.authorHou, Yansheng
dc.contributor.authorZhang, Qi
dc.date.accessioned2018-01-15T12:36:12Z
dc.date.available2018-01-15T12:36:12Z
dc.date.issued2017-12-09
dc.description.abstractNano-sized blue solid solutions ZnxMg0.5−xCo0.5Al2O4 (x = 0–0.5) have been synthesised by the Pechini method. Single-phase ZnxMg0.5−xCo0.5Al2O4 with crystallite size of ∼40 nm was identified by XRD measurement. The TG-DSC results indicated that the phase formation temperature of ZnxMg0.5−xCo0.5Al2O4 increased with the substitution of Zn2+/Mg2+ → Co2+ proceeding. The UV–vis spectra illustrated that the Zn0.3Mg0.2Co0.5Al2O4 pigment displayed the most intensive blue colour with the strongest absorbance appearing within the visible region. The FT-IR spectra suggested that the inversion degree of ZnxMg0.5−xCo0.5Al2O4 pigment reduces with the increase of Zn2+ rather than Mg2+, enabling to control the pigment colour by tuning the Zn2+ content. The FE-SEM images showed an irregular shaped morphology of ZnxMg0.5−xCo0.5Al2O4 crystal, different from the cubic-like morphology of CoAl2O4 crystal. The XPS results illustrated that the inversion of pure CoAl2O4 pigment is larger than that of Zn0.3Mg0.2Co0.5Al2O4. Both Zn0.2Mg0.3Co0.5Al2O4 and Zn0.3Mg0.2Co0.5Al2O4 show commercial potential in pigments application.en_UK
dc.identifier.citationPeng X, Cheng J, Yuan J, Jin N, Kang J, Hou Y, Qi Z, Environmental blue CoAl2O4 pigment co-doped by Zn2+ and Mg2+: synthesis, structure and optical properties, Advances in Applied Ceramics, Volume 117, 2018, Issue 5, pp. 303-311en_UK
dc.identifier.issn1743-6753
dc.identifier.urihttp://dx.doi.org/10.1080/17436753.2017.1410941
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12892
dc.language.isoenen_UK
dc.publisherTaylor & Francisen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectAbsorbance spectroscopyen_UK
dc.subjectSolid solutionsen_UK
dc.subjectCitrate sol-gel methoden_UK
dc.subjectBlue colouren_UK
dc.subjectInversion degreeen_UK
dc.titleEnvironmental blue CoAl2O4 pigment co-doped by Zn2+ and Mg2+: synthesis, structure and optical propertiesen_UK
dc.typeArticleen_UK

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