Facile hydrothermal fabrication of hollow hexagonal hydroxyapatite prisms

Well-defined hollow hexagonal prisms of hydroxyapatite (Ca10(PO4)6(OH)2) have been grown facilely on an aluminium oxide anodisc membrane via a hydrothermal reaction of calcium carbonate and phosphoric acid for 6 h at 170 [degree]C in the presence of hydrazine monohydrate in a Teflon-lined autoclave....

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Bibliographic Details
Published in:CrystEngComm 2011-01, Vol.13 (17), p.5455-5459
Main Authors: Lee, Dong Ki, Park, Ji Yeon, Kim, Mee Rahn, Jang, Du-Jeon
Format: Article
Language:English
Subjects:
Autoclaves
Calcium phosphate
Hydroxyapatite
Nanorods
Phosphates
Prisms
Reaction time
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Summary:Well-defined hollow hexagonal prisms of hydroxyapatite (Ca10(PO4)6(OH)2) have been grown facilely on an aluminium oxide anodisc membrane via a hydrothermal reaction of calcium carbonate and phosphoric acid for 6 h at 170 [degree]C in the presence of hydrazine monohydrate in a Teflon-lined autoclave. The sizes and the structures of calcium phosphate crystals are dependent widely on the temperature and the time of the reaction, revealing the formation mechanism of the hollow hexagonal hydroxyapatite prisms. Fourier transform infrared spectra and microscopic images show that irregular nanorods of octacalcium phosphate (Ca8H2(PO4)6[middle dot]5H2O) formed in the early reaction time transform into hollow hexagonal prisms of hydroxyapatite as the reaction time goes by.
ISSN:1466-8033
1466-8033
DOI:10.1039/c1ce05511a