期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
卷 15, 期 12, 页码 1279-1284出版社
SPRINGER
DOI: 10.1007/s10856-004-5735-3
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Rapid synthesis of calcium deficient hydroxyapatite (CDHA, Ca10-x(HPO4)(x)(PO4)(6-x)(OH)(2-x)) with Ca/P ratio 1.5 was done by precipitation using calcium nitrate tetra-hydrate and phosphoric acid and subsequently subjecting to microwave irradiation in a domestic microwave oven for 15 min. Transmission electron microscopy analysis shows needle like morphology of CDHA having length 16-39 nm and width 7-16 nm. The synthesized CDHA has the characteristic HPO42- vibration band at 875 cm(-1) in Fourier transform infrared (FT-IR) spectra. The X-ray powder diffraction (XRD) analysis shows a pattern corresponding to stoichiometric hydroxyapatite (HA) with broad peaks suggesting that CDHA particles were nanosized. Fourier transform Raman spectroscopy (FT-Raman) do not indicate any fluorescence band that is characteristic of non-stoichiometric HA. The thermal decomposition of CDHA to beta tricalcium phosphate (beta-TCP) was also studied for the additional confirmation. The nanosized CDHA was found to be stable up to 600degreesC. (C) 2004 Kluwer Academic Publishers.
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