Preparation of europium(III)-doped hydroxyapatite nanocrystals in the presence of cationic surfactant

Takuya Kataoka, Kota Shiba, Motohiro Tagaya

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Europium (III) (Eu3 +)-doped hydroxyapatite (HAp) nanocrystals were synthesized in the presence of a cetyltrimethylammonium bromide (CTAB) to investigate the states of Eu3 + ions in the structure. The HAp structure was preserved with the doping as well as the CTAB existence, and the carbonate ions were included in the structure. The uniform shapes and mono-dispersion of the nanocrystals were observed by adding CTAB. The transitions of 5D07F1 and 5D07F2 in the photoluminescence spectra indicated the presence of the Eu3 + in an environment of a low symmetry before the calcination. The Eu3 + was effectively positioned in the Ca sites in the HAp structure. The CTAB addition would prevent the Eu3 + ions from aggregating each other, inducing the effective substitution and resultantly showing the efficient luminescence. Therefore, the interactions between the Eu3 + ions and HAp structure were successfully enhanced in the presence of CTAB.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalColloids and Interface Science Communications
Publication statusPublished - Jul 1 2016
Externally publishedYes


  • Cationic surfactant
  • Hydroxyapatite
  • Morphosynthesis
  • Nanocrystals
  • Photoluminescence

ASJC Scopus subject areas

  • Biotechnology
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry
  • Materials Chemistry


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