无机材料学报 ›› 2011, Vol. 26 ›› Issue (12): 1335-1340.DOI: 10.3724/SP.J.1077.2011.11399 CSTR: 32189.14.SP.J.1077.2011.11399

• 研究快报 • 上一篇    下一篇

沉淀法制备氟羟基磷灰石的影响因素

朱庆霞, 江伟辉, 王洪达, 邵  川   

  1. (景德镇陶瓷学院 材料科学与工程学院, 江西省先进陶瓷材料重点实验室, 景德镇 333001)
  • 收稿日期:2011-07-01 修回日期:2011-09-01 出版日期:2011-12-20 网络出版日期:2011-11-11
  • 基金资助:

    National Natural Science Foundation of China (50962006); Natural Science Foundation of Jiangxi Province(2009GQC0074)

Investigation on Preparation Factors for Fluorhydroxyapatite by an Aqueous Precipitation Method

ZHU Qing-Xia, JIANG Wei-Hui, WANG Hong-Da, SHAO Chuan   

  1. (School of Materials Sceince and Engeering, Key Laboratory of Adranced Ceramics of Jiangxi province, Jingdezhen Ceramic Institute, Jingdezhen 333001, China)
  • Received:2011-07-01 Revised:2011-09-01 Published:2011-12-20 Online:2011-11-11
  • Supported by:

    National Natural Science Foundation of China (50962006); Natural Science Foundation of Jiangxi Province(2009GQC0074)

摘要: 采用沉淀法制备了纳米氟羟基磷灰石(FHA), 研究了合成温度、初始氟离子浓度和 pH 值对氟替代的影响. 用 X 射线衍射和红外光谱表征了FHA粉体的物相组成和晶体结构变化, 用透射电镜观察了FHA的形貌. 结果表明: 氟替代会导致晶格参数和键能的变化, 随着合成温度或原料中氟浓度的升高, FHA 晶粒尺寸和长径比增大; 相组成主要受pH值控制, 考虑到OH和F 对羟基空位的竞争, 高pH值不利于氟替代.

关键词: 氟羟基磷灰石, 沉淀法, 氟替代

Abstract: The nanosized fluorhydroxyapatite (FHA) were synthesized by an aqueous precipitation method. The effects of synthesis temperature, molar ratio of NH4F to Ca(NO3)2·4H2O in the initial reagents[n(F)/n(Ca2+)] and the pH value on the fluoride substitution were investigated. The phase composition and the change of crystal structure were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscope (FT-IR). The morphology of FHA was observed by Transmission electron microscope (TEM). The results show that crystal lattice parameters and bond energy make changes by incorporation of F– ion in the structure. The size and aspect ratio of FHA crystals increase as the precipitation temperature and fluoride concentration. The phase composition of FHA is mainly controlled by the pH value. Considering the possibility of a competition between OH and F for occupation of the OH–site, high pH value isn’t conductive to the fluoride substitution.

Key words: fluorhydroxyapatite, aqueous precipitation method, fluoride substitution

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