title: The effect of ultrasonic irradiation on the crystallinity of nano-hydroxyapatite produced via the wet chemical method.
abstract: Nanohydroxyapatite (nHAp) powders were produced via aqueous precipitation by adopting four different experimental conditions, assisted or non-assisted by ultrasound irradiation (UI). The nHAp powders were characterized by X-ray diffraction, energy-dispersive X-ray fluorescence, Raman and attenuated total reflection Fourier transform infrared spectroscopies, which showed typical surface chemical compositions of nHAp. Analysis found strong connections between UI and the crystallization process, crystal growth properties, as well as correlations between calcination and substitution reactions.
authors.affiliation: Laboratory of Biomedical Nanotechnology, Universidade do Vale do Paraíba (UniVap), Av. Shishima Hifumi 2911, Sao Jose dos Campos, 12224-000, SP, Brazil.
authors.forename: Michelle C
authors.initials: MC
authors.lastname: Barbosa
authors.forename: Nigel R
authors.initials: NR
authors.lastname: Messmer
authors.forename: Tayra R
authors.initials: TR
authors.lastname: Brazil
authors.forename: Fernanda R
authors.initials: FR
authors.lastname: Marciano
authors.forename: Anderson O
authors.initials: AO
authors.lastname: Lobo
mesh_terms: D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles; D013057:Spectrum Analysis / Q000379:methods; D014465:Ultrasonics
chemical_list: D017886:Durapatite