Application of nanostructured Ca doped CeO2 for ultraviolet filtration

Laurianne Truffault*, Minh Tri Ta, Thierry Devers, Konstantin Konstantinov, Valérie Harel, Cyriaque Simmonard, Caroline Andreazza, Ivan P. Nevirkovets, Alain Pineau, Olivier Veron, Jean Philippe Blondeau

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

Calcium doped CeO2 nanoparticles with doping concentrations between 0 and 50 mol% were synthesized by a co-precipitation method for ultraviolet filtration application. Below 20 mol% doping concentration, the samples were single-phase. From 30 mol%, CaCO3 appears as a secondary phase. The calculated CeO2 mean crystallite size was 9.3 nm for the pure and 5.7 nm for the 50 mol% Ca-doped sample. Between 250 and 330 nm, the absorbance increased for the 10, 30, and 40 mol% Ca-doped samples compared to the pure one. The band-gap was found to be 3.20 eV for the undoped, and between 3.36 and 3.51 eV for the doped samples. The blue shifts are attributed to the quantum confinement effect. X-ray photoelectron spectroscopy showed that the Ce3+ atomic concentration in the pure sample was higher than that of the 20 mol% Ca-doped sample.

Original languageEnglish (US)
Pages (from-to)527-535
Number of pages9
JournalMaterials Research Bulletin
Volume45
Issue number5
DOIs
StatePublished - May 1 2010
Externally publishedYes

Keywords

  • A. Nanostructures
  • B. Chemical synthesis
  • C. Electron microscopy
  • C. X-ray diffraction
  • D. Optical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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