Preparation and colour evaluation of ceria-zirconia based solid solution prepared by coprecipitation method

Ceria-zirconia solid solution powders were prepared by coprecipitation method. The products were characterized by XRD, colorimetric assessment, and UV-Vis diffuse reflectance measurement. The mixed phase powders were obtained for a series of ZrxCe1-xO2 having the CeO2-rich and ZrO2-rich phase belongs to cubic fluorite structure. Diffuse reflectance spectra of the powder in the UV region show the broad shoulder-type band at 320-340nm, which is assigned to interband transitions in CeO2. The most absorption of visible light and the most vivid yellow pigment colour were observed for x = 0.6 in ZrxCe1-xO2.