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中文摘要：
采用溶胶-凝胶法,制备了有序多孔羟基磷灰石（hydroxyapatite with highly ordered three-dimensional pores,HA-HODP）。在37℃,将HA-HODP在CaCl2和Ca（H2PO4）2溶液中浸泡几天,通过X射线衍射、场发射扫描电子显微镜、Fourier变换红外光谱以及pH值等的测试手段分析、研究了Cl^-和H2PO4^-对HA-HODP组成和形貌的影响。结果显示：HA-HODP浸入到CaCl2溶液中,生成Ca5（PO4）3Cl和CaCO3相。Ca5（PO4）3Cl相的生成系Cl^-取代了OH^-;CaCO3相的生成系Ca^2＋在碱性环境下,与溶解在溶液中的CO2发生了反应。在Ca（H2PO4）2溶液中,由于存在过量H2PO4^-,在HA-HODP的表面生成了Ca9HPO4（PO4）5OH相。
英文摘要：
Hydroxyapatite（HA） with highly ordered three-dimensional pores（HA-HODP） was fabricated via the sol–gel process. X-ray diffraction,field emission scanning electron microscope,fourier transform infrared spectroscopy,and pH measurement were performed to characterize the variations in the composition and morphology of HA-HODP,which was immersed in CaCl2 and Ca（H2PO4） 2 aqueous solutions for several days at 37 ℃. The results indicate that Ca5（PO4） 3Cl and CaCO3 phases are formed when the HA-HODP is immersed in CaC12 solution. It is shown that the formation of Cas（PO4）3Cl phase is due to the ion substitution of OH^- by Cl^-, whereas the formation of CaCO3 is attributed to the reaction between Ca^2＋ and the CO2 dissolved in the aqueous solution under alkaline condition. Ca9HPO4（PO4）5OH is formed on the surface of the HA-HODP immersed in Ca（H2PO4）2 aqueous solution as a result of the addition of abundant H2PO4^-.
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