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Journal of Materials Science

, Volume 44, Issue 14, pp 3662–3673 | Cite as

Synthesis, characterization and thermal analysis of Fe-doped boehmite nanofibres and nanosheets

  • Yanyan Zhao
  • Jing Yang
  • Ray L. FrostEmail author
  • János Kristóf
  • Erzsébet Horváth
Article

Abstract

It is important that one should have knowledge of the thermal stability of synthesized nanomaterials. In this research, thermal analyses of both dynamic and controlled rate thermal analysis (CRTA) combined with infrared emission spectroscopy have been used to determine the thermal stability of iron-doped boehmite. Iron-doped boehmite nanofibres with varying iron contents have been prepared at low temperature using hydrothermal treatment in the presence of non-ionic poly (ethylene oxide) surfactant. The TEM images show that the resulting nanostructures are predominantly nanofibres when Fe doping is less than 5%; in contrast, nanosheets are the dominant for 10% Fe-doped boehmite. No nanofibre was observed in the case of 20% Fe-doped boehmite, instead, nanotubes, nanosheets and iron-rich nanoparticles were formed. Both dynamic thermal analysis and CRTA show that Fe-doped boehmite nanomaterials dehydroxylate at higher temperatures than pure boehmite nanofibres. In general, the higher the doped Fe %, the higher the dehydroxylation temperature. The dehydroxylation temperature indicated in the infrared emission spectroscopy of doped boehmite nanomaterials is in harmony with those in other thermal analysis studies.

Keywords

Hydrothermal Treatment Boehmite Mass Loss Step Thermal Analysis Study Control Rate Thermal Analysis 

Notes

Acknowledgements

The financial and infrastructure support of the Queensland University of Technology Inorganic Materials Research Program of the School of Physical and Chemical Sciences is gratefully acknowledged. The authors thank The Australian Research Council (ARC) for funding the Thermal Analysis facility through a LIEF grant. One of the authors (YZ)owes his gratitude for a Queensland University of Technology international doctoral scholarship (QIDS).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Yanyan Zhao
    • 1
  • Jing Yang
    • 1
  • Ray L. Frost
    • 1
    Email author
  • János Kristóf
    • 2
  • Erzsébet Horváth
    • 3
  1. 1.Inorganic Materials Research Program, School of Physical and Chemical SciencesQueensland University of TechnologyBrisbaneAustralia
  2. 2.Department of Analytical ChemistryUniversity of PannoniaVeszprémHungary
  3. 3.Department of Environmental Engineering and Chemical TechnologyUniversity of PannoniaVeszprémHungary

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