TY - JOUR
T1 - Morphology control of cerium phosphates via solution processes for new sunscreen application
AU - Sato, Tsugio
AU - Saito, Midori
AU - Sato, Chigusa
AU - Yin, Shu
N1 - Funding Information:
This research was partially supported by the Ministry of Education, Culture, Sports, Science and Technology, Scientific Research of Priority Areas “Panoscopic Assembling and High Ordered Functions for Rare Earth Materials” and “Special Education and Research Expenses, Post-Silicon Materials and Devices Research Alliance”.
PY - 2009/12
Y1 - 2009/12
N2 - Plate-like hydrated cerium phosphate, Ce 2(PO 4) 2HPO 4 · H 2O, ca. 3 μm in diameter, was obtained by the hydrothermal reaction of Ce(SO 4) 2 in H 3PO 4 aqueous solution at 150200°C. Ce 2(PO 4) 2HPO 4 · H 2O transformed to CeP 2O 7CePO 4 mixture around 700°C while maintaining the plate-like morphology. Plate-like CePO 4 and CeP 2O 7 were also synthesized as single phase by heating plate-like Ce 2(PO 4) 2HPO 4 · H 2O at 700°C with cerium hydroxide and NH 4H 2PO 4, respectively. Plate-like cerium phosphates showed excellent comfort, absorption ability of UV-ray and lower oxidation catalytic activity than undoped ceria. The UV-shielding ability was in the order Ce 2(PO 4) 2HPO 4 · H 2O > CeP 2O 7 > CeP 2O 7CePO 4 mixture > CePO 4 > K 0.8Li 0.266Ti 1.734O 4.
AB - Plate-like hydrated cerium phosphate, Ce 2(PO 4) 2HPO 4 · H 2O, ca. 3 μm in diameter, was obtained by the hydrothermal reaction of Ce(SO 4) 2 in H 3PO 4 aqueous solution at 150200°C. Ce 2(PO 4) 2HPO 4 · H 2O transformed to CeP 2O 7CePO 4 mixture around 700°C while maintaining the plate-like morphology. Plate-like CePO 4 and CeP 2O 7 were also synthesized as single phase by heating plate-like Ce 2(PO 4) 2HPO 4 · H 2O at 700°C with cerium hydroxide and NH 4H 2PO 4, respectively. Plate-like cerium phosphates showed excellent comfort, absorption ability of UV-ray and lower oxidation catalytic activity than undoped ceria. The UV-shielding ability was in the order Ce 2(PO 4) 2HPO 4 · H 2O > CeP 2O 7 > CeP 2O 7CePO 4 mixture > CePO 4 > K 0.8Li 0.266Ti 1.734O 4.
KW - Cerium phosphate
KW - UV-shielding property
KW - plate-like particle
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U2 - 10.1142/S1793604709000739
DO - 10.1142/S1793604709000739
M3 - Article
AN - SCOPUS:80052312762
SN - 1793-6047
VL - 2
SP - 157
EP - 161
JO - Functional Materials Letters
JF - Functional Materials Letters
IS - 4
ER -