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

Porous calcium hydroxyapatite Ca 10(PO 4) 6(OH) 2 (HAp) has been prepared from calcium hydroxide and NH 4H 2PO 4 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,...

Full description

Saved in:

Bibliographic Details
Published in:	Materials chemistry and physics Vol. 104; no. 2; pp. 448 - 453
Main Authors:	El Hammari, L., Merroun, H., Coradin, T., Cassaignon, S., Laghzizil, A., Saoiabi, A.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 15-08-2007 Elsevier
Subjects:	Chemical Sciences Crystal growth Inorganic chemistry Porous hydroxyapatite Surface properties Crystal growth Surface properties Porous hydroxyapatite
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Porous calcium hydroxyapatite Ca 10(PO 4) 6(OH) 2 (HAp) has been prepared from calcium hydroxide and NH 4H 2PO 4 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 °C, while still retaining high specific surface area. A correlation between structural and surface properties has been established.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0254-0584 1879-3312
DOI:	10.1016/j.matchemphys.2007.04.002