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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.125  No.2 (February) (2017)  >  pp.71-74

Journal of the Ceramic Society of Japan
<<Previous article Vol.125  No.2 (February) (2017)   pp.71 - 74 Next article>>

Synthesis of new Cr-doped CaTiO3 yellow pigments by a simple solvothermal method

Weixia DONG1), Qifu BAO1), Xisha HUANG2), Xingyong GU1), Xiaodong WANG1), Ye HUANG1), Yuxuan MAO1)
1) Department of material Science and Engineering, Jingdezhen Ceramic Institute 2) School of Materials Science and Engineering, Nanyang Technological University

Cr-doped calcium titanate (CaTiO3) pigments with prism-like shape were synthesized by a simple solvothermal process without any surfactants. The colouring mechanism and performance of Cr-doped CaTiO3 yellow pigment samples were investigated by X-ray diffraction, diffuse reflection spectroscopy, field scanning electron microscopy and colorimeter. When Cr-doping concentrations were 0.01–0.05% (mole fraction, the same below), solid solution formed so that the yellow pigments would have a CaTiO3 phase composition. The intensity of the yellow colour in the pigment samples was related to the presence of Cr ions. The optimum yellow pigment was achieved when the Cr-doping concentration was 0.03% mol. At a high temperature of 1280°C, Cr-doped CaTiO3 yellow sample provided a stronger and more intense colour as Cr ions dissolved into the stable CaTiO3 structure. This solvothermal preparation method provides a simpler way to synthesize a more colourful ceramic pigment that can be applied in ceramic decoration or inkjet printers.


Keyword:
Cr-doped CaTiO3, Yellow pigment, Template free, Solvothermal method

Received: July 04, 2016
Accepted: November 24, 2016 , Published online: February 01, 2017

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