摘要
以Ca(NO_3)_2-(NH_4)_2HPO_4-NH_4HCO_3模拟体液(SBF)为反应体系,采用沉淀法制备出不同掺杂量碳酸根羟基磷灰石(CHA)。利用X射线衍射、Fourier变换红外光谱、航向电子显微镜、热重以及X射线光电子谱等多种表征手段研究了CHA的组成、粒径以及CO_3^(2-)替代的类型及含量。结果表明:在pH=10,反应温度为95℃时,合成的粉末为B型取代为主的混合型取代CHA;随着CO_3^(2-)掺杂量的增加,CHA结晶度降低,颗粒尺寸减小至粒径为10~20 nm,长度约35 nm。
Carbonated hydroxyapatite （CHA） with different carbonate contents was synthesized by a simple precipitation method in Ca（NO3）E-（NH4）2HPO4-NH4HCO3 simulated body fluid （SBF） reaction system. The composition, particle size and carbonate contents were analyzed by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, transmission electron microscopy （TEM）, thermo-gravimetry and differential thermal analysis （TG-DTA） and X-ray photoelectron spectroscopy （XPS）, respectively. The CHAs synthesized at pH value of 10 and 95℃ show the following characteristics, i.e., （1） the substitution of carbonate in CHA lattice is mainly B type, and （2） the crystallinity of CHAs decreases and the average particle size with the length of-35nm reduces to l0 - 20 nm when the carbonate content increases.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2016年第1期50-55,共6页
Journal of The Chinese Ceramic Society
基金
江苏省六大人才高峰资助(137060029)
关键词
羟基磷灰石
碳酸根羟基磷灰石
沉淀法
模拟体液
hydroxyapatite
carbonated hydroxyapatite
precipitation method
simulated body fluid
