Synthesis of high color performance V-ZrSiO4 blue pigment with low doping amount via inorganic sol-gel route

In this paper, high color performance vanadium ion (V4+) doped ZrSiO4(V-ZrSiO4) blue pigment with low doping amount has been successfully synthesized by inorganic sol-gel route. According to the phase evolution and color behavior of the samples, the formation mechanism of the V-ZrSiO4 pigment was revealed. Besides, due to the immobilization effect of the gel network and the high precursor reactivity, the reported synthesis route has extremely high vanadium utilization ratio (99.69%). Based on the results of XPS and XRF analysis, it is found that the valence state of vanadium ion in the V-ZrSiO4 pigment is 4+, meanwhile, the vanadium cations are heterogeneously distributed in the pigment particles and are enriched within the outer layers. Compared with the previously reported V-ZrSiO4 pigments, the asprepared V-ZrSiO4 pigment shows a bright blue hue (b*=-22.01), in which the theoretical content of V4+ is only 2 mol%. After applying on ceramic glaze, the V-ZrSiO4 pigment exhibited superior coloring performance and high-temperature stability, indicating its potential application in ceramic decoration. This work provides a facile strategy to synthesize high color performance ion-doping type pigment. (C) 2021 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

Automated summary

In this study, a high color performance vanadium ion (V4+) doped ZrSiO4 blue pigment with low doping amount was successfully synthesized using an inorganic sol-gel route. The formation mechanism of the pigment was revealed based on phase evolution and color behavior analysis. XPS and XRF analysis confirmed the valence state of vanadium ion as 4+ and its heterogeneous distribution within the pigment particles. The prepared pigment exhibited superior coloring performance and high-temperature stability on ceramic glaze, suggesting its potential application in ceramic decoration.