Abstract
Hydroxyapatite (HAp) was synthesised using a hydrothermal method. Nanosized CaCO 3 was used as the calcium source, while (NH 4) 2HPO 4 was used as the phosphorous source. Well crystallised HAp and a small amount of b-tricalcium phosphate (β-TCP) were obtained after the hydrothermal reaction. Fourier transform infrared spectra show that under conditions of pH 6 and 250°C, the functional groups of OH - and PO4 3- were stronger than those under pH 10. This suggests that the powder synthesised at pH 6 has more HAp phase than that at pH 10. Scanning and transmission electron microscope images show that HAp exhibits a rod-like shape at pH 6 and 250°C. After hydrothermal reaction at pH 6 and 250°C, most products are HAp with a small amount of β-TCP synthesised as byproduct and some residual CaCO 3.
Original language | English |
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Pages (from-to) | 119-123 |
Number of pages | 5 |
Journal | Materials Technology |
Volume | 27 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2012 Feb |
Keywords
- β-Tricalcium phosphate
- Hydrothermal
- Hydroxyapatite
- Nanocalcium carbonate
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering