Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing
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2010
Authors
Veselinović, Ljiljana
Karanović, Ljiljana

Stojanović, Zoran S.

Bračko, Ines
Marković, Smilja

Ignjatović, Nenad

Uskoković, Dragan

Article (Published version)

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A series of cobalt-exchanged hydroxyapatite (CoHAp) powders with different Ca/Co ratios and nominal unit-cell contents Ca10-x Cox (PO4)6(OH)2, x = 0, 0.5, 1.0, 1.5 and 2.0, were synthesized by hydrothermal treatment of a precipitate at 473 K for 8 h. Based on ICP (inductively coupled plasma) emission spectroscopy analysis, it was established that the maximum amount of cobalt incorporation saturated at 7sim;12 at.% under these conditions. The effects of cobalt content on the CoHAp powders were investigated using ICP emission spectroscopy, particle size analysis, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) analyses as well as X-ray powder diffraction (XRPD) including Rietveld analysis. According to XRPD, all the materials are single-phase HAp and CoHAp of low crystallinity. Rietveld analysis shows that Co enrichment causes the c cell parameter to decrease at a faster rate than the a cell parameter. A microstructural analysis showed ...anisotropic X-ray line broadening due to crystallite size reduction. In CoHAp there is significant crystal elongation in [001], and the average size decreases with increasing cobalt content. The crystallite morphology transforms from rod-like for the pure HAp to lamellae at the highest degree of Co substitution. The results of Rietveld refinement (symmetry, size and morphology of the crystallites) were confirmed by TEM and HRTEM analysis. © 2010 International Union of Crystallography. Printed in Singapore-all rights reserved.
Keywords:
CoHAp powders / cobalt-exchanged hydroxyapatite / nanopowders / nanopowdersSource:
Journal of Applied Crystallography, 2010, 43, 2, 320-327Publisher:
- Chester: International Union of Crystallography
Funding / projects:
- Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-142006)
Note:
- Crystallographic information: https://hdl.handle.net/21.15107/rcub_dais_3440
- Rietveld powder data file: https://hdl.handle.net/21.15107/rcub_dais_3442
Related info:
- Referenced by
https://hdl.handle.net/21.15107/rcub_dais_3440 - Referenced by
https://hdl.handle.net/21.15107/rcub_dais_3442
DOI: 10.1107/S0021889809051395
ISSN: 1600-5767
WoS: 000275432600015
Scopus: 2-s2.0-77949615446
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Veselinović, Ljiljana AU - Karanović, Ljiljana AU - Stojanović, Zoran S. AU - Bračko, Ines AU - Marković, Smilja AU - Ignjatović, Nenad AU - Uskoković, Dragan PY - 2010 UR - https://dais.sanu.ac.rs/123456789/3428 AB - A series of cobalt-exchanged hydroxyapatite (CoHAp) powders with different Ca/Co ratios and nominal unit-cell contents Ca10-x Cox (PO4)6(OH)2, x = 0, 0.5, 1.0, 1.5 and 2.0, were synthesized by hydrothermal treatment of a precipitate at 473 K for 8 h. Based on ICP (inductively coupled plasma) emission spectroscopy analysis, it was established that the maximum amount of cobalt incorporation saturated at 7sim;12 at.% under these conditions. The effects of cobalt content on the CoHAp powders were investigated using ICP emission spectroscopy, particle size analysis, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) analyses as well as X-ray powder diffraction (XRPD) including Rietveld analysis. According to XRPD, all the materials are single-phase HAp and CoHAp of low crystallinity. Rietveld analysis shows that Co enrichment causes the c cell parameter to decrease at a faster rate than the a cell parameter. A microstructural analysis showed anisotropic X-ray line broadening due to crystallite size reduction. In CoHAp there is significant crystal elongation in [001], and the average size decreases with increasing cobalt content. The crystallite morphology transforms from rod-like for the pure HAp to lamellae at the highest degree of Co substitution. The results of Rietveld refinement (symmetry, size and morphology of the crystallites) were confirmed by TEM and HRTEM analysis. © 2010 International Union of Crystallography. Printed in Singapore-all rights reserved. PB - Chester: International Union of Crystallography T2 - Journal of Applied Crystallography T1 - Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing SP - 320 EP - 327 VL - 43 IS - 2 DO - 10.1107/S0021889809051395 UR - https://hdl.handle.net/21.15107/rcub_dais_3428 ER -
@article{ author = "Veselinović, Ljiljana and Karanović, Ljiljana and Stojanović, Zoran S. and Bračko, Ines and Marković, Smilja and Ignjatović, Nenad and Uskoković, Dragan", year = "2010", abstract = "A series of cobalt-exchanged hydroxyapatite (CoHAp) powders with different Ca/Co ratios and nominal unit-cell contents Ca10-x Cox (PO4)6(OH)2, x = 0, 0.5, 1.0, 1.5 and 2.0, were synthesized by hydrothermal treatment of a precipitate at 473 K for 8 h. Based on ICP (inductively coupled plasma) emission spectroscopy analysis, it was established that the maximum amount of cobalt incorporation saturated at 7sim;12 at.% under these conditions. The effects of cobalt content on the CoHAp powders were investigated using ICP emission spectroscopy, particle size analysis, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) analyses as well as X-ray powder diffraction (XRPD) including Rietveld analysis. According to XRPD, all the materials are single-phase HAp and CoHAp of low crystallinity. Rietveld analysis shows that Co enrichment causes the c cell parameter to decrease at a faster rate than the a cell parameter. A microstructural analysis showed anisotropic X-ray line broadening due to crystallite size reduction. In CoHAp there is significant crystal elongation in [001], and the average size decreases with increasing cobalt content. The crystallite morphology transforms from rod-like for the pure HAp to lamellae at the highest degree of Co substitution. The results of Rietveld refinement (symmetry, size and morphology of the crystallites) were confirmed by TEM and HRTEM analysis. © 2010 International Union of Crystallography. Printed in Singapore-all rights reserved.", publisher = "Chester: International Union of Crystallography", journal = "Journal of Applied Crystallography", title = "Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing", pages = "320-327", volume = "43", number = "2", doi = "10.1107/S0021889809051395", url = "https://hdl.handle.net/21.15107/rcub_dais_3428" }
Veselinović, L., Karanović, L., Stojanović, Z. S., Bračko, I., Marković, S., Ignjatović, N.,& Uskoković, D.. (2010). Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing. in Journal of Applied Crystallography Chester: International Union of Crystallography., 43(2), 320-327. https://doi.org/10.1107/S0021889809051395 https://hdl.handle.net/21.15107/rcub_dais_3428
Veselinović L, Karanović L, Stojanović ZS, Bračko I, Marković S, Ignjatović N, Uskoković D. Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing. in Journal of Applied Crystallography. 2010;43(2):320-327. doi:10.1107/S0021889809051395 https://hdl.handle.net/21.15107/rcub_dais_3428 .
Veselinović, Ljiljana, Karanović, Ljiljana, Stojanović, Zoran S., Bračko, Ines, Marković, Smilja, Ignjatović, Nenad, Uskoković, Dragan, "Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing" in Journal of Applied Crystallography, 43, no. 2 (2010):320-327, https://doi.org/10.1107/S0021889809051395 ., https://hdl.handle.net/21.15107/rcub_dais_3428 .