ICAME 2007 pp 295-300 | Cite as

Mössbauer studies of nano phase Ce–Fe oxide composites

Conference paper


Chemical co-precipitation method was used to synthesize nano-structured α-Fe2O3-CeO2 composite by calcination of the goethite–cerium hydroxide precursor. It was observed that the precursor contained goethite matrix doped with cerium. Calcination of the precursor at 400°C showed the formation of nanosize hematite. Mössbauer spectra show the presence of a paramagnetic component in the precursor but not in the samples calcined at 400°C to 800°C temperatures. Our study shows that Ce precipitated as CeO2 and stuck on the surface of hematite particles. The precipitation of Ce as CeO2 is independent of the concentration of Ce in the Ce–Fe–O composite.


Oxide-composites Mössbauer spectra TEM Nano-particles Cerium oxide 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Costa, C.N., Savva, P.G., Andronikou, C., et al.: An investigation of the NO/H2/O2 (Lean De-NOx) reaction on a highly active and selective Pt/La0.7Sr0.2Ce0.1FeO3 catalyst at low temperatures. J. Catalysis. 209, 456–471 (1992)CrossRefGoogle Scholar
  2. 2.
    Shaheen, W.M., Ali, A.A.: Thermal solid–solid interaction and physicochemical properties of CuO–Fe2O3 system. Int. J. Inorg. Mater. 3, 1073–1081 (2001)CrossRefGoogle Scholar
  3. 3.
    Tabuchi, M., Ado, K., Kobayashi, H., Sakaebe, H., et al.: Preparation of LiCoO2 and LiCo1 − xFexO2 using hydrothermal reactions. J. Mater. Chem. 9, 199–204 (1999)CrossRefGoogle Scholar
  4. 4.
    Zhang, T., Hing, P., Huang, H., Kilner, J.: Densification, microstructure and grain growth in the CeO2–Fe2O3 system (0 ⩽ Fe/Ce ⩽ 20%). J. Euro. Ceram. Soc. 21, 2221–2228 (2001)CrossRefGoogle Scholar
  5. 5.
    Kamimura, Y., Sato, S., Takahashi, R., Sodesawa, T., Akashi, T.: Synthesis of 3-pentanone from 1-propanol over CeO2–Fe2O3 catalysts. Appl. Catal. A. 252, 399–410 (2003)CrossRefGoogle Scholar
  6. 6.
    Li, G., Smith, R.L., Inomata, H.: Synthesis of nanoscale Ce1 − xFexO2 solid solutions via a low-temperature approach. J. Am. Chem. Soc. 123, 11091–11092 (2001)CrossRefGoogle Scholar
  7. 7.
    Walton, R.I.: Subcritical solvothermal synthesis of condensed inorganic materials. Chem. Soc. Rev. 31, 230–238 (2002)CrossRefGoogle Scholar
  8. 8.
    Huang, W., Shuk, P., Greenblatt, M.: Hydrothermal synthesis and properties of Ce1 − xSmxO2 − x/2 and Ce1 − xCaxO2 − x solid solutions. Chem. Mater. 9, 2240–2245 (1997)CrossRefGoogle Scholar
  9. 9.
    Mohapatra, M., Anand, S., Das, R.P., Upadhyay, C., Verma, H.C.: Aqueous reduction of crystalline goethite under ammoniacal conditions. Hydrometallurgy. 65, 227–235 (2002)CrossRefGoogle Scholar

Copyright information

© Springer Science + Business Media B.V. 2008

Authors and Affiliations

  1. 1.Department of PhysicsI.I.T. KanpurKanpurIndia
  2. 2.Department of HydrometallurgyI. M. M. T. BhubaneswarOrissaIndia

Personalised recommendations