| Title |
Solvothermal synthesis of calcium-deficient hydroxyapatite via hydrolysis of α-tricalcium phosphate in different aqueous-organic media / |
| Authors |
Karalkevičienė, Rasa ; Raudonytė-Svirbutavičienė, Eva ; Gaidukevič, Justina ; Žarkov, Aleksej ; Kareiva, Aivaras |
| DOI |
10.3390/cryst12020253 |
| Full Text |
|
| Is Part of |
Crystals.. Basel : MDPI AG. 2022, vol. 12, no. 2, art. no. 253, p. [1-11].. eISSN 2073-4352 |
| Keywords [eng] |
calcium hydroxyapatite ; α-tricalcium phosphate ; water-organic solvent system ; solvothermal synthesis |
| Abstract [eng] |
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. |
| Published |
Basel : MDPI AG |
| Type |
Journal article |
| Language |
English |
| Publication date |
2022 |
| CC license |
|
