title: Synthesis of nano-hydroxyapatite under a sonochemical/hydrothermal condition.
abstract: In this study, hydroxyapatite (denoted as HAp) nanostructure with uniform morphologies, controllable size, nano-dispersion and narrow size distribution in diameter has been synthesized successfully by low-temperature hydrothermal process, and the as-synthesized powders were characterized by XRD, scanning electron microscopy, high-resolution transmission microscopy, FT-IR, Zetasizer and inductively coupled plasma. In the present work, a novel sonochemical technique using CaHPO(4)2H(2)O/NaOH/distilled water with cetyltrimethylammonium bromide ((CH(3)(CH(2))(15)N(+)(CH(3))(3)Br(-)) designated as CTAB) under a hydrothermal condition to synthesize HAp nanostructure was described. Furthermore, the usage of a high basic condition and a water environment are the two crucial keys in ensuring the formation of HAp in the hydrothermal/sonochemical processes. However, the crystallite size and crystallinity degree of the HAp increased with increasing annealing temperature. Indeed, the present work will introduce a new method in synthesizing HAs for scientific and medical engineering.
authors.affiliation: Ceramic Department, Materials and Energy Research Center, PO Box 14155-4777, Tehran, Iran.
authors.forename: S A
authors.initials: SA
authors.lastname: Manafi
authors.forename: B
authors.initials: B
authors.lastname: Yazdani
authors.forename: M R
authors.initials: MR
authors.lastname: Rahimiopour
authors.forename: S K
authors.initials: SK
authors.lastname: Sadrnezhaad
authors.forename: M H
authors.initials: MH
authors.lastname: Amin
authors.forename: M
authors.initials: M
authors.lastname: Razavi
mesh_terms: D003460:Crystallization / Q000379:methods*; D017886:Durapatite / Q000138:chemical synthesis* / Q000737:chemistry* / Q000528:radiation effects; D006358:Hot Temperature; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D013010:Sonication; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D017886:Durapatite