title: Hydroxyapatite nanocrystals: simple preparation, characterization and formation mechanism.
abstract: Crystalline hydroxyapatite (HAP) nanoparticles and nanorods have been successfully synthesized via a simple precipitation method. To control the shape and particle size of HAP nanocrystals, coordination ligands derived from 2-hydroxy-1-naphthaldehyde were first prepared, characterized by Fourier transform infrared (FT-IR) and proton nuclear magnetic resonance ((1)H-NMR) spectroscopies, and finally applied in the synthesis process of HAP. On the other hand, the HAP nanocrystals were also characterized by several techniques including powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). According to the FE-SEM and TEM micrographs, it was found that the morphology and crystallinity of the HAP powders depended on the coordination mode of the ligands.
authors.affiliation: Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P. O. Box. 87317-51167, Islamic Republic of Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mohandes
authors.affiliation: Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P. O. Box. 87317-51167, Islamic Republic of Iran; Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box 87317-51167, Islamic Republic of Iran. Electronic address: salavati@kashanu.ac.ir.
authors.forename: Masoud
authors.initials: M
authors.lastname: Salavati-Niasari
authors.affiliation: Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Islamic Republic of Iran; Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran.
authors.forename: Mohammadhossein
authors.initials: M
authors.lastname: Fathi
authors.affiliation: Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Islamic Republic of Iran.
authors.forename: Zeinab
authors.initials: Z
authors.lastname: Fereshteh
mesh_terms: D017886:Durapatite / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009281:Naphthalenes / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D009281:Naphthalenes; C062247:2-hydroxy-1-naphthaldehyde; D017886:Durapatite
keywords: Bioceramic; Hydroxyapatite; Nanocrystal; Precipitation