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Kinetics of magnetite nanoparticles formation in a one step low temperature hydrothermal process

Ahmadi, R ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ceramint.2012.11.097
  3. Publisher: 2013
  4. Abstract:
  5. In the present study, a one step hydrothermal process was employed to synthesize magnetite nanoparticles using oleic acid as surfactant agent at 140 °C. Effects of reaction time and alkalinity were studied on particles size and morphology. By changing these parameters, some monodisperse spherical nanoparticles with mean particle size between 2.71 and 13.88 nm were synthesized and characterized via TEM, XRD, VSM, TGA and FT-IR techniques. Assuming the Avrami behavior of particles formation, a kinetics equation was proposed for the transformation rate at 140 °C. Using some simplifying assumptions, nucleation and growth rates were calculated for the hydrothermal formation of magnetite nanoparticles at 140 °C
  6. Keywords:
  7. Avrami ; Hydrothermal ; Hydrothermal formations ; Hydrothermal process ; Nucleation and growth ; Simplifying assumptions ; Spherical nanoparticles ; Transformation rates ; Magnetite ; Synthesis (chemical) ; Magnetite nanoparticles
  8. Source: Ceramics International ; Volume 39, Issue 5 , July , 2013 , Pages 4999-5005 ; 02728842 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0272884212013533