Characterization of Mg-substituted hydroxyapatite synthesized by wet chemical method
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- 作者：Liga Stipniece ; Kristine Salma-Ancane ; Natalija Borodajenko ; Marina Sokolova ; Dmitrijs Jakovlevs ; Liga Berzina-Cimdina
- 关键词：Wet chemical precipitation ; Hydroxyapatite ; Mg substitution
- 刊名：Ceramics International
- 出版年：March, 2014
- 年：2014
- 卷：40
- 期：2
- 页码：3261-3267
- 全文大小：2668 K
文摘
Mg-substituted hydroxyapatite made up of needle-like and plate-like particles containing different amounts of Mg (between 0.21 wt% and 2.11 wt%) were prepared via wet chemical precipitation method of a homogenous suspension of Mg(OH)2/Ca(OH)2 and an aqueous solution of H3PO4. According to the data of Brunauer-Emmett-Teller method and field emission scanning electron microscopy, high specific surface area Mg-substituted hydroxyapatite was obtained. Specific surface area of as-synthesized powders increased from 94.9 m2 g鈭? to 104.3 m2 g鈭? with increasing concentration of Mg up to 0.64 wt%. Fourier transform infrared spectroscopy, X-ray powder diffraction, differential thermal analysis, and heating microscopy, were used to evaluate thermal stability and sintering behavior of synthesis products. Increase in concentration of Mg in synthesis products (鈮?.83 wt%) promoted decomposition of Mg-substituted hydroxyapatite to Mg-substituted 尾-tricalcium phosphate after thermal treatment.