This contribution is focused on the synthesis, characterization and optical properties of new inorganic pigments which are environment friendly and can substitute some toxic metals in interesting colour compounds. Pyrochlores belong to the group of high-temperature pigments, and are a variety of actual and potential applications for several materials. Examples include catalysts, thermal barrier coatings, solid electrolytes, nuclear waste forms and host materials for luminescence centers. The pigments were prepared by the solid state reaction and also by method of suspension mixing of materials in the series with increasing content of molybdenum. The pigments were applied into organic matrix and ceramic glaze. The colour properties of these applications were investigated depending on content of Mo, method of preparation and temperature of calcination (1350–1550 °C after step 50 °C). The optimum conditions for their synthesis were determined. The pigments were evaluated from standpoint of their structure, colour and particle sizes. Characterization of Er2Ce2−xMoxO7 pigments (x = 0.1, 0.3, 0.5 and 0.7) suggests that they have a potential to be alternative yellow or orange colourants for paints, plastics, ceramics and building materials.
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5. Lian, J, Helean, KB, Kennedy, BJ, Wang, LM, Navrotsky, A, Ewing, RC2006Effect of structure and thermodynamic stability on the response of lanthanide stannate pyrochlores to ion beam irradiation. J. Phys. Chem. B110:2343.
Lian, J, Helean, KB, Kennedy, BJ, Wang, LM, Navrotsky, A, Ewing, RC2006Effect of structure and thermodynamic stability on the response of lanthanide stannate pyrochlores to ion beam irradiation. J. Phys. Chem. B110:234310.1021/jp055266c.)| false