INFLUENCE OF SYNTHESIS PROCESS ON THE COLOUR PROPERTIES OF MIXED OXIDE PIGMENT Bi1.5Zn0.5Ce₂O₇

The synthesis of a new inorganic pigment Bi 1.5 Zn 0.5 Ce 2 O 7 is reported. The pigment was prepared by conventional solid-state reaction (SSR), suspension mixing (SM) and precipitation reaction (PR) with the goal of creating an environmentally benign pigment. The selected samples were characterized by X-ray diffraction analysis. Focusing on pigmentary applications, specific properties of the samples were evaluated, such as colour parameters and particle size distribution. Dark yellow hues were obtained by using SSR and SM after the application samples into the organic binder in mass tone. The PR method was found to be the most suitable for the formation of dark yellow shades in the ceramic glaze. Based on obtained results, Bi 1.5 Zn 0.5 Ce 2 O 7 could be considered as a perspective yellow pigment for colouring organic binder systems and ceramic glaze.