Abstract
A study of the Hydroxyapatite (HAp) synthesis through a hydrothermal process was carried out. Bio-Calcium oxide (CaO) obtained by heat treatment of sand dollar was used in the synthesis at different proportions to react with monetite (CaHPO3). Structural and chemical characterization of the samples was carried out using scanning electron microscopy (SEM), X-ray diffraction; Infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). In each sample were observed different morphologies such as agglomerates, hexagonal particles, epitaxial growth, and fibers. O, Ca, P, C and small amounts of Mg and Si were the main chemical components of the sharp morphologies. The hydroxyapatite, whitocklite, portlandite and calcite were the crystalline phases found in each of the samples analyzed. Two different growth shapes of HAp single crystals were found using transmission electron microscopy. The HAp single crystal with six well-defined prismatic faces was reveled to grow along side the <1 0 –1 0> crystallographic direction. The HAp single crystal with fiber morphology grew alongside c-axis. However, both morphologies of HAp single crystals present a ratio Ca/P less compared with the stoichiometric ratio (Ca/P=1.67).
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 callMore From: International Journal of Basic and Applied Sciences
Disclaimer: 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.
