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

Autor:	Sophie Cassaignon, H. Merroun, Abdelaziz Laghzizil, Thibaud Coradin, A. Saoiabi, L. El Hammari
Rok vydání:	2007
Předmět:	Materials science Calcium hydroxide Scanning electron microscope Mineralogy Porosimetry Condensed Matter Physics Amorphous solid chemistry.chemical_compound Dynamic light scattering chemistry Chemical engineering Specific surface area General Materials Science Hydroxyapatites Mesoporous material
Zdroj:	Materials Chemistry and Physics. 104:448-453
ISSN:	0254-0584
DOI:	10.1016/j.matchemphys.2007.04.002
Popis:	Porous calcium hydroxyapatite Ca10(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 °C, while still retaining high specific surface area. A correlation between structural and surface properties has been established.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d014245e89804f238f5f6b2b70205ad https://doi.org/10.1016/j.matchemphys.2007.04.002 Zobrazit plný text záznamu Full Text from ScienceDirect