Synthesis and Structural Properties of Europium-Doped Fluorapatite Nanoparticles as a Promising Luminescent Biomaterial

Authors

  • Vojislav Stanić Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
  • Mia Omerašević Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
  • Dragosav Mutavdžić Institute for Multidisciplinary Research, University of Belgrade, 11000 Belgrade, Serbia
  • Milena Marinović-Cincović Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
  • Miloš Milović Institute of Technical Sciences of SASA, 11000 Belgrade, Serbia
  • Ana Mraković Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
  • Slađana Tanasković Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia

Abstract

Europium-doped fluorapatite Ca10-x(PO4)6F2:xEu3+ (x = 0.05, 0.1 and 0.5) nanoparticles were successfully synthesised by a coprecipitation method at room temperature and calcination at 700 ⁰C. Characterisation of samples using XRD, TEM, TGA-DTA, FTIR and photoluminescence spectroscopy showed that the obtained calcium deficient fluorapatite nanoparticles exhibit a high degree of crystalline disorder, i.e. Eu doping leads to a remarkable structural amorphisation of fluorapatite. The crystallinity and crystallite size of the obtained samples decreased with the increase of Eu doping. The lattice parameters of the calcined samples decrease noticeably with the increase in Eu3+ dopant concentration. When excited by UV radiation at 393 nm, all europium-doped fluorapatite samples showed the characteristic 5D0–7F0–4 emission lines of Eu3+ ions. According to the luminescence results, the Eu3+ ions have largely replaced the Ca2+ ions in the Ca(I) position in the crystal lattice of the fluorapatite

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Published

2026-06-02

Issue

Vol. 58 No. 2 (2026)

Section

Articles

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