Mesoporous hydroxyapatites prepared in ethanol-water media: Structure and surface properties

被引：44

作者：

El Hammari, L.

Merroun, H.

Coradin, T.

Cassaignon, S.

Laghzizil, A. ^{[1
]}

Saoiabia, A.

机构：

[1] Fac Sci Rabat, Lab Chim Phys Gen, BP 1014, Rabat, Morocco

[2] Univ Paris 06, CNRS, UMR 7574, F-75005 Paris, France

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2007年 / 104卷 / 2-3期

关键词：

porous hydroxyapatite; crystal growth; surface properties;

D O I：

10.1016/j.matchemphys.2007.04.002

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Porous calcium hydroxyapatite Ca-10(PO4)(6)(OH)(2) (HAp) has been prepared from calcium hydroxide and NH4H2PO4 solutions in alcohol-water media at various temperatures. The resulting powders have been characterized using X-ray diffraction, FT-IR spectroscopy, TG/TD analyses, nitrogen porosimetry, dynamic light scattering, complex impedance method and scanning electron microscopy. The temperature of the reaction and the use of ethanol as the solvent significantly alter the HAp morphology and particle size. The as-precipitated materials are mainly amorphous but they can become highly crystalline after heat-treatment at 800 degrees C, while still retaining high specific surface area. A correlation between structural and surface properties has been established. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：448 / 453

页数：6

共 23 条

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Sol-gel synthesis of a multifunctional, hierarchically porous silica/apatite composite [J].