title: The facile and low temperature synthesis of nanophase hydroxyapatite crystals using wet chemistry.
abstract: A simple and facile wet chemistry route was used to synthesize nanophase hydroxyapatite (HaP) crystals at low temperature. The synthesis was carried out at a pH of 11.0 and at a temperature of 37°C. The resulting samples were washed several times and subjected to further analysis. XRD studies revealed that the HaP crystals were polycrystalline in nature with a crystallite size of ~15-60 ± 5 nm. SEM-EDXA images confirmed the presence of calcium (Ca), phosphorous (P), and oxygen (O) peaks. Likewise, FTIR confirmed the presence of characteristic phosphate and hydroxyl peaks in samples. Lastly, HRTEM images clearly showed distinctive lattice fringes positioned in the 100 and 002 planes. TGA analysis shows that HaP crystals can withstand higher calcination temperatures and are thermally stable.
authors.affiliation: Department of Mechanical Engineering, College of Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea.
authors.forename: Vivek
authors.initials: V
authors.lastname: Dhand
authors.affiliation: Department of Mechanical Engineering, College of Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea. Electronic address: rheeky@khu.ac.kr.
authors.forename: K Y
authors.initials: KY
authors.lastname: Rhee
authors.affiliation: Department of Chemistry, Inha University, Incheon, Republic of Korea. Electronic address: sjpark@inha.ac.kr.
authors.forename: Soo-Jin
authors.initials: SJ
authors.lastname: Park
mesh_terms: D003080:Cold Temperature; D003460:Crystallization / Q000379:methods*; D017886:Durapatite / Q000138:chemical synthesis* / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D012996:Solutions; D014867:Water; D017886:Durapatite
keywords: FTIR; HRTEM; Hydroxyapatite; Nanophase crystal; Wet chemistry