仿生纳米含硅羟基磷灰石的合成与表征  

Synthesis and Characterization of Bionic Nano-silicon-substituted Hydroxyapatite

作　　者：翟倩倩[1] 赵士贵[1] 王孝海[1] 李秀芝[1] 李文杰[1] 郑亚森[1] 

机构地区：[1]山东大学材料科学与工程学院,济南250061

出　　处：《无机材料学报》2013年第1期58-62,共5页Journal of Inorganic Materials

摘　　要：为了探究仿生纳米含硅羟基磷灰石的合成条件及含硅量对其结晶性能的影响,以Ca(NO3)2、(NH4)2HPO4和Si(OCH2CH3)4(TEOS)为原料,采用化学沉淀法制备了不同含硅量的羟基磷灰石,并通过傅里叶变换红外光谱(FTIR)、X射线荧光光谱(XRF)、X射线衍射(XRD)、透射电镜(TEM)对材料进行了表征。结果表明较低温(40℃)时有利于合成纯净的仿生纳米含硅羟基磷灰石,SiO44-取代部分PO43-进入羟基磷灰石的晶格。随着含硅量的增加,仿生纳米含硅羟基磷灰石的结晶度和晶粒尺寸均降低,晶胞参数a和c均增大。To explore the synthesis condition of the bionic nano-silicon-substituted hydroxyapatite and the impact of the silicon content on its crystallization properties, hydroxyapatite of different silicon content were synthesized from Ca（NO3）2, （NI-I4）2HPO4 and Si（OCH2CH3）4（TEOS） via an aqueous precipitation reaction. Fourier transform infrared spectroscopy （FTIR）, X-ray fluorescence spectrum （XRF）, X-ray diffraction （XRD） and transmission electron microscopy （TEM） were used for hydroxyapatite characterization. The results show that relative low temperature （40℃） is conducive to obtain pure bionic nano-silicon-substituted hydroxyapatite. Under this condition, SiO4^4- enters the lattice of hydroxyapatite and replaces part of PO4^3-. The more the content of silicon is, the lower the crystallinity is, the smaller the grain size is and the higher the lattice parameters a and c are.

关 键 词：硅 羟基磷灰石 化学沉淀 仿生 

分 类 号：TQ174[化学工程—陶瓷工业]