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以Ca(NO3)2-(NH4)_2HPO4-NH_4HCO3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CO32-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CO32-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。
Abstract：Carbonated hydroxyapatite(CHA) with different carbonate contents was synthesized by a simple precipitation method in Ca(NO3)2-(NH4)_2HPO4-NH_4HCO3 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 10~20 nm when the carbonate content increases.
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基本信息:
DOI：10.14062/j.issn.0454-5648.2016.01.08
中图分类号:TQ132.32
引用信息:
[1]蔡银,李平,朱沛志.在模拟体液中沉淀法制备碳酸根羟基磷灰石[J].硅酸盐学报,2016,44(01):50-55.DOI:10.14062/j.issn.0454-5648.2016.01.08.
基金信息:
江苏省六大人才高峰资助(137060029)
2015-06-29
2015
2015-12-16
2015-10-23
2015
1
2015-12-23
2015-12-23
2015-12-23