Abstract
Well-defined hollow hexagonal prisms of hydroxyapatite (Ca10(PO4)6(OH)2) have been grown facilely on an aluminium oxide anodisc membranevia a hydrothermal reaction of calcium carbonate and phosphoric acid for 6 h at 170 °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)6·5H2O) formed in the early reaction time transform into hollow hexagonal prisms of hydroxyapatite as the reaction time goes by.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
