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Surfactant-assisted synthesis and characterization of hydroxyapatite nanorods under hydrothermal conditions

Salarian, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. Publisher: 2009
  3. Abstract:
  4. Hydroxyapatite (HAp) nanorods with uniform morphology and controllable size were successfully synthesized by precipitating Ca(NO3) 24H2O and (NH4)2HPO4 in the presence of cetyltrimethylammonium bromide (CTAB) and polyethylene glycol 400 (PEG 400) as cationic surfactant and non-ionic cosurfactant, respectively, under hydrothermal conditions. The effect of hydrothermal temperature on the composition, morphology and size of HAp particles was studied using X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR) and scanning electron microscopy (SEM). Results revealed that the morphology and size of HAp particles can be effectively controlled by the presence of CTAB and PEG surfactants. In addition, the temperature of the hydrothermal treatment plays an important role in controlling the morphology and size of HAp particles. The aspect ratio of rod-like particles increases with the increase in the hydrothermal temperature. Moreover, the crystallinity of HAp powders increases with the increase in the hydrothermal temperature. The template action of CTAB and the co-template action of PEG 400 used to regulate the nucleation and crystal growth are also discussed
  5. Keywords:
  6. Surfactant ; Cetyltrimethylammonium bromide ; Co-surfactants ; Controllable size ; Crystallinities ; Fourier transform infrared spectrometry ; Hydrothermal conditions ; Hydrothermal temperature ; Hydrothermal treatments ; Morphology and size ; Nonionic ; PEG-400 ; Polyethylene glycol 400 ; Rod-like particles ; SEM ; Surfactant assisted synthesis ; Template action ; Ammonium compounds ; Apatite ; Aspect ratio ; Calcium ; Cationic surfactants ; Dyes ; Fourier transform infrared spectroscopy ; Grain boundaries ; Hydroxyapatite ; Morphology ; Nanorods ; Polyethylene glycols ; Polyethylene oxides ; Scanning electron microscopy ; X ray diffraction ; Hydrothermal synthesis
  7. Source: Materials Science- Poland ; Volume 27, Issue 4 , 2009 , Pages 961-971 ; 01371339 (ISSN)