Preparation and Characterization of Plate-like Cerium Phosphate / Nanosize Calcia Doped Ceria Composites by Precipitation Method

Abstract

In order to obtain UV-shielding materials with good comfort, higher safety and effective UV-shielding ability, plate-like cerium phosphate Ce₂(PO₄)₂HPO₄·H₂O (CePHPH)/calcia-doped ceria (Ce_0.8Ca_0.2O_1.8, donated as: CDC) composites were synthesized by a precipitation method. UV-shielding ability and oxidation activity of as-obtained cerium phosphate/CDC composites were characterized. As a result, broad-spectrum UV-shielding composite materials with low oxidation catalytic activity were successfully synthesized. After calcination at 700^oC, the morphology of the composite did not change, while the oxidation catalytic activity decreased.