NDLI: Solvothermal Synthesis of Calcium-Deficient Hydroxyapatite via Hydrolysis of α-Tricalcium Phosphate in Different Aqueous-Organic Media

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Solvothermal Synthesis of Calcium-Deficient Hydroxyapatite via Hydrolysis of α-Tricalcium Phosphate in Different Aqueous-Organic Media

Content Provider	MDPI
Author	Karalkeviciene, Rasa Raudonyte-Svirbutaviciene, Eva Gaidukevic, Justina Zarkov, Aleksej Kareiva, Aivaras
Copyright Year	2022
Description	In the present work, the effects of various organic solvents (solvent nature and fraction within the solution) and solvothermal conditions on the formation of calcium-deficient hydroxyapatite (CDHA) via hydrolysis of α-tricalcium phosphate (α-TCP) are investigated. The wet precipitation method is applied for α-TCP synthesis, and the hydrolysis reaction is performed in solutions with different water-to-organic solvent ratios under solvothermal conditions at 120 °C for 3 h and at 200 °C for 5 h. Ethyl alcohol, isopropyl alcohol, and butyl alcohol did not inhibit the hydrolysis of α-TCP, while methyl alcohol and ethylene glycol have a more prominent inhibitory effect on the hydrolysis, hence the formation of single-phased CDHA. From all the solvents analysed, ethylene glycol has the highest impact on the sample morphology. Under certain water to ethylene glycol ratios and solvothermal conditions, samples containing a significant fraction of rods are obtained. However, samples prepared with ethylene glycol are characterised by a particularly low BET surface area.
Starting Page	253
e-ISSN	20734352
DOI	10.3390/cryst12020253
Journal	Crystals
Issue Number	2
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-02-13
Access Restriction	Open
Subject Keyword	Crystals Calcium Hydroxyapatite Α-tricalcium Phosphate Water-organic Solvent System Solvothermal Synthesis
Content Type	Text
Resource Type	Article

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