2007 Volume 21 Pages 44-47
Micaceous hydrated cerium phosphate, Ce2(PO4)2HPO4•H2O, was prepared by the hydrothermal reaction and its photochemical properties were evaluated. Ce2(PO4)2HPO4•H2O showed excellent absorption ability of light having a wavelength less than 450 nm of wavelength and oxidation catalytic activity lower than undoped ceria. Ce2(PO4)2HPO4•H2O was converted to a plate-like CePO4-CeP2O7 mixture around 650°C and CePO4-CeP3O9 mixture around 800°C, possessing absorption ability of UV light less than 400 nm and much lower oxidation catalytic activity than Ce2(PO4)2HPO4•H2O.
