Keeping these facts in mind, the main
attention was focused on the pigment synthesis based on
CeO2 doped by small amounts of praseodymium and
transition metal to achieve good red color characteristics
in plastics. The main goal of this study is to understand
relative influence of different counter ions in the optical
properties of ceria based red pigments. In the present study, safer red pigments having the formula Ce0.95MxPr0.05xO2, (M = Mn and Si, x ranges from 0 to 0.05) have been synthesized by a solid-state reaction of the respective oxides.These pigments were characterized for their structural and optical properties and the application of these pigments in a polymer matrix are highlighted.