Cerium oxide for sunscreen cosmetics

Shinryo Yabe, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

230 Citations (Scopus)

Abstract

Ultrafine particles of Mn+-doped ceria (Mn+=Mg2+, Ca2+, Sr2+, Ba2+, Y3+, La3+, Nd3+, Sm3+, Eu3+, Tb3+) for UV filter were prepared via soft solution chemical routes at 40°C. X-ray diffraction revealed that the prepared doped particles had the cubic fluorite structures although peak positions changed depending on the kind and amount of doped metal ion. Doping with 20mol% Ca2+ and 20mol% Zn2+ resulted in extremely decreasing the particle size (2-4nm) and the catalytic activity of ceria for oxidation of castor oil. Ca2+-doped cerium dioxide showed excellent UV absorbing effect and transparency in the visible ray region compared with undoped cerium dioxide.

Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalJournal of Solid State Chemistry
Volume171
Issue number1-2
DOIs
Publication statusPublished - 2003 Jan 1

Keywords

  • Ca
  • Catalytic activity
  • Doped ceria
  • UV filter
  • Ultrafine particle
  • Zn

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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