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在研究 HAP的表面结构、表面电荷性能、表面吸附特性的基础上 ,对现有的水溶液制备 HAP的方法进行改进 ,不用通常的缓慢而持续滴加反应溶液的方法 ,而采用间歇式反应溶液滴加法 ,再通过控制溶液的 p H值 (7.0～7.5 ) ,以及反应溶液的添加次序等 ,最终得到片状 HAP晶体。用 X-射线衍射分析 ,红外光谱分析 ,扫描电镜形貌观察 ,对片状 HAP的性能及结构进行分析 ,并对 Cl-的作用机理进行了初步探讨
On the basis of studying the surface structure, surface charge properties and surface adsorption properties of HAP, the existing methods for preparing HAP in aqueous solution are improved, instead of the usual method of slowly and continuously dropping the reaction solution, a batch reaction solution droplet Addition, and then by controlling the p H value of the solution (7.0 ~ 7.5), as well as the order of addition of the reaction solution, and finally to obtain flaky HAP crystals. X-ray diffraction analysis, infrared spectroscopy and scanning electron microscopy were used to analyze the properties and structure of HAP. The mechanism of action of Cl- was also discussed