简单方法制备羟基磷灰石中空微球

无需添加任何有机物和金属离子, 以易得的中空球形碳酸钙(CaCO3)与磷酸氢二钠(Na2HPO4)作为反应物在常压下制备出羟基磷灰石中空微球. 通过场发射扫描电子显微镜(FESEM)、扫描电子显微镜(SEM), X射线粉末衍射(XRD)等手段对制备的羟基磷灰石中空微球的结构、组成和形貌进行了表征, 考察了不同反应温度对中空球形貌的影响. 实验结果表明, 所制备的羟基磷灰石微球是由短针状的纳米粒子组成的, 直径为2-4 μm. 对反应机理进行了初步探讨.

Facile Preparation of Hollow Hydroxyapatite Microspheres

Without anyorganic additives andmetal ions, hollowhydroxyapatite (HAp)microsphereswere successfully synthesized using hollow CaCO3 microspheres and Na2HPO4 as reactants. The hollow microspheres were characterized by scanning electron microscopy (SEM), field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD). The results showed that the as-prepared HAp was hollow microspheres with diameter of 2-4 μm and were composed of many needle-like particles of 40-60 nm in diameter and 80-200 nm in length. The effects of synthesis conditions, such as reaction temperature, were studied. Furthermore, the reaction temperature has an important influence on the morphology of the hollow HAp microspheres. Based on this result, the formation mechanism of hollow HAp microspheres was discussed preliminarily.