柱状纳米羟基磷灰石的制备和结构表征  

Synthesis and structural characterization of columnar nano-hydroxyapatite

作　　者：徐惠[1] 张斯凡[1] 苟国俊[1] 刘小育[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2008年第2期61-64,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50602020)

摘　　要：以P2O5,Ca(NO3)2.4H2O为原料,无水乙醇为溶剂,通过调节pH值控制凝胶的形成,利用溶胶-凝胶/水热法制备柱状纳米羟基磷灰石(HAP).通过XRD、FTIR、电镜(TEM、SEM)等检测手段,对凝胶燃烧产物和经水热处理后的粉体相组成、形貌进行分析,探讨HAP晶体形成的原因.结果表明,利用溶胶-凝胶经低温燃烧后形成主晶相为纳米级的HAP,形状以柱状为主,经水热处理后,可得高纯度的HAP柱状晶体(100 nm×1800 nm),杂以少量粒状纳米粒子(30 nm×60 nm).Taking P2O5 and Ca（NO3）2 · 4H2O as crude materials and absolute alcohol as solvent, the resultant gel precursors was obtained by adjusting pH. Columnar mancrpowders of hydroxyapatite （HAP） were prepared by means of sol-gel synthesis and hydrothermal processing. The phase composition and morphology of the combustion products of the gel and the hydrothermally synthesized powder were analyzed with XRD, FTIR and electron microscopy （SEM, TEM） . On the basis of it, the mechanism of the phase crystal forming was also analyzed. Results showed that the composition of the main crystal phase of the precursor powder prepared with sol-gel was mano-order HAP with columnar crystalline as its majority. After hydrothermal processing, the columnar crystalline of HAP with high purity （100 nm× 1 800 nm） and few particulate inclusion（30 nm×67 nm） inside could be obtained.

关 键 词：溶胶-凝胶 水热合成 羟基磷灰石 柱状晶体 

分 类 号：TQ12[化学工程—无机化工]