Collection of scientific works Nanosystems, nanomaterials, nanotechnologies
Year 2025 Volume 23, Issue 3
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N. Yu. STRUTYNSKA1, O. M. BEBKEVYCH1, I. D. ZHYLIAK2, and M. S. SLOBODYANIK1

1Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., UA-01601 Kyiv, Ukraine
2Uman National University of Horticulture, 1 Instytutska Str., UA-20305 Uman, Ukraine

Cobalt- and Carbonate-Containing Calcium Phosphates: Synthesis and Investigation

749–757 (2025)

PACS numbers: 61.05.cp, 61.46.Hk, 78.30.Hv, 81.07.Bc, 81.16.Be, 82.33.Pt, 82.80.Gk

Received 13 August, 2024

Nanoparticles of cobalt and carbonate-containing calcium phosphates with apatite-type structure as well as biphasic calcium phosphates (a mixture of phases based on hydroxyapatite Ca10(РО4)6(ОН)2 and β-tricalcium phosphate β-Ca3(РО4)2) are obtained from aqueous solutions of the Сa2+–Сo2+–PO43––CO32––NO3– system at the molar ratio Сa2+:Сo2+:PO43–:CO32– = (10 – x – y/2):x:(6 – y):y (x = 0.05, 0.1, 0.5, 1.0; y = 0, 0.5) at room temperature with subsequent heating to a temperature of 500°C. The size of the crystallites in all cases, regardless of the composition of the initial solution, is close to 30 nm. The calculated cell parameters for synthesized calcium phosphates (hexagonal system, space group P63/m) decrease as the amount of cobalt cations in their composition increases. This fact indicates partial substitution of calcium atoms by cobalt ones in the cation sublattice of apatite-type structure. The results of FTIR spectroscopy confirm the partial substitution of the phosphate anion by carbonate groups (B type) in the hydroxyapatite structure. The obtained results can be used in the development of nanomaterials for various purposes based on apatite-related calcium phosphates doped with cobalt cations (up to 3 wt.%).

KEY WORDS: hydroxyapatite, biphasic calcium phosphate, cobalt, carbonate, FTIR spectroscopy

DOI: https://doi.org/10.15407/nnn.23.03.0749

Citation:
N. Yu. Strutynska, O. M. Bebkevich, I. D. Zhilyak, and M. S. Slobodyanik, Cobalt- and Carbonate-Containing Calcium Phosphates: Synthesis and Investigation, Nanosistemi, Nanomateriali, Nanotehnologii, 23, No. 3: 749–757 (2025); https://doi.org/10.15407/nnn.23.03.0749

Funding / Acknowledgments:
The work was supported by the Ministry of Education and Science of Ukraine (project No. 0122U001959).

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