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Synthesis and characterization of iron oxide nanoparticles prepared hydrothermally at different reaction temperatures and pH

  • Palagiri Bhavani , Chintaparty Rajababu , Md. Arif , Immareddy Venkata Subba Reddy and Nagireddy Ramamanohar Reddy
Published/Copyright: September 29, 2016
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 107 Issue 10

Abstract

Iron oxide nanoparticles were synthesized with Fe+2 and Fe+3 precursors in a 1 : 2 ratio by using the hydrothermal method under different reaction temperatures and alkaline conditions. The iron oxide nanoparticles were characterized for structure, morphology, optical and magnetic properties. X-ray diffraction analysis confirmed that the samples prepared at different hydrothermal temperatures exhibited a magnetite structure, the increased intensity of the peaks indicates a high degree of crystallinity. The transformation of goethite to Fe3O4 structure was observed with variation of the pH value. The morphological study revealed that some samples exhibited spherical particles and some others exhibited a mixed morphology of spheres and rods. The iron oxide synthesized at 190 °C exhibited better magnetic properties due to the uniform distribution of spheres with particles size in the range, 18 – 25 nm.

Keywords: Hydrothermal temperature; Alkaline concentration; Magnetite nanoparticles; Saturation magnetization
*Correspondence address, Nagireddy Ramamanohar Reddy, Department of Materials Science and Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa-516003, India, Tel.: +91-8562-225451, Fax: +91-8562-225419, E-mail:

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Received: 2016-03-02
Accepted: 2016-05-11
Published Online: 2016-09-29
Published in Print: 2016-10-14

© 2016, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111417
Keywords for this article
Hydrothermal temperature; Alkaline concentration; Magnetite nanoparticles; Saturation magnetization

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. A metastable phase diagram for the dynamic transformation of austenite at temperatures above the Ae3
  5. Experimental investigation of phase equilibria in the Co–Ni–Zr ternary system
  6. Phase equilibria of the Ni–Sb–Zn system at 600 °C
  7. High frequency cycling behaviour of three AZ magnesium alloys – microstructural characterisation
  8. Influence of auxetic foam in quasi-static axial crushing
  9. Electrochemical behaviour of iron and AISI 304 stainless steel in simulated acid rain solution
  10. Mechanochemical synthesis of CaMoO4 nanoparticles: kinetics and characterization
  11. Synthesis and characterization of iron oxide nanoparticles prepared hydrothermally at different reaction temperatures and pH
  12. Influence of SPS parameters on the density and hardness of zinc selenide
  13. Investigation into the kinetic behavior of molten aluminum pressureless infiltration into SiC preforms
  14. Review
  15. Centrifugal casting technique baseline knowledge, applications, and processing parameters: overview
  16. People
  17. Prof. Dr.-Ing. Jürgen Hirsch on the occasion of his 65th birthday
  18. DGM News
  19. DGM News
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