Raman spectroscopy investigation of nano hydroxyapatite doped with yttrium and fluoride ions
Spectroscopy Letters, cilt.47, sa.1, ss.24-29, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 47 Sayı: 1
- Basım Tarihi: 2014
- Doi Numarası: 10.1080/00387010.2013.778296
- Dergi Adı: Spectroscopy Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.24-29
- Anahtar Kelimeler: fluoride, hydroxyapatite, Raman spectroscopy, sintering, yttrium
- Sağlık Bilimleri Üniversitesi Adresli: Hayır
Özet
In this study, nano hydroxyapatite doped with yttrium (2.5, 5, and 7.5 mol%) and fluoride (2.5 mol%) ions were synthesized by precipitation method and sintered at 900°C, 1100°C, and 1300°C. Raman spectroscopy was applied to track the structural modifications in pure and doped hydroxyapatites. The results showed that the main characteristic band of pure hydroxyapatite at 963 cm-1 was not affected significantly by ion doping but exhibited higher intensity with increasing sintering temperature. Due to fluoride substitution, the 1048 and 1034 cm-1 bands of pure hydroxyapatites appeared with a wavenumber shift in the spectra of ion-doped hydroxyapatites. The 333 cm-1 band of pure hydroxyapatite disappeared and an additional calcium-fluor bond at 322 cm-1 was observable in ion-doped hydroxyapatites. Two fluorescence bands at 770 and 697 cm-1, which were also observed in the spectra of pure hydroxyapatites, shifted to higher wavenumbers in the spectra of ion-doped hydroxyapatites. This was considered to result from the perturbation in the hexagonal structure of hydroxyapatite due to yttrium and fluoride codoping. Copyright © Taylor & Francis Group, LLC.