Thermal Stability of Iron- and Silicon-Substituted Hydroxyapatite Prepared by Mechanochemical Method | Sciact - CRIS-system of Boreskov Institute of Catalysis

Thermal Stability of Iron- and Silicon-Substituted Hydroxyapatite Prepared by Mechanochemical Method Full article

Journal

Powders
ISSN: 2674-0516

Output data

Year: 2023, Volume: 2, Number: 2, Pages: 372-386 Pages count : 15 DOI: 10.3390/powders2020022

Tags

hydroxyapatite; substitution; iron; silicon; mechanochemical synthesis; ex situ annealing

Authors

Makarova Svetlana V. ¹ , Bulina Natalia V. ¹ , Vinokurova Olga B. ¹ , Ishchenko Arcady V. ²

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia
2	G.K. Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Pr. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

075-00521-21-00 (121032500064-8) (FWUS-2021-0009)

In this study, hydroxyapatite with the substitution of calcium cations by iron and phosphate by silicate groups was synthesized via a mechanochemical method. The as-prepared compounds have the general formula Ca10−xFex(PO4)6−x(SiO4)x(OH)2−xOx/2 with x = 0–1.5. The thermal stability of the as-prepared compounds was studied by ex situ annealing of powders in a furnace. It has been established that, at 800 °C for x ≤ 0.5, a partial decomposition of the substituted apatites occurs with the formation of the β–Ca3(PO4)2 phase. At high “x” values, the formation of this phase starts at the lower temperature of 700 °C, followed by the formation of Fe2O3 at 900 °C. The introduction of iron and silicate ions into the hydroxyapatite lattice was shown to decrease its thermal stability.

Makarova S.V. , Bulina N.V. , Vinokurova O.B. , Ishchenko A.V.
Thermal Stability of Iron- and Silicon-Substituted Hydroxyapatite Prepared by Mechanochemical Method
Powders. 2023. V.2. N2. P.372-386. DOI: 10.3390/powders2020022 РИНЦ OpenAlex

Submitted:	Mar 2, 2023
Accepted:	May 10, 2023
Published online:	May 11, 2023
Published print:	Jun 1, 2023

Elibrary:	54385025
OpenAlex:	W4382813315

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