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Rietveld analysis of the effect of annealing atmosphere on phase evolution of nanocrystalline TiO 2 powders

Journal Article


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Abstract


  • The struclUral evolution of nanocrystaUine Ti02 was studied by X-ray diffraction (XRD) and the

    Rietveld refinement method (RRM). Ti02 powders were prepared by the sol-gel technique. Post

    annealing of as·synthesized powders in the temperature range from 500°C to 600 °C under air and

    argon atmospheres led to the formation of Ti02 nanoparticles with mean crystallite size in the range

    of 37-165 nm. based on the Rietveld refinement results. It was found that the phase structure,

    composition, and crystallite size of the resulting particles were dependent on not only the annealing

    temperature, but also the annealing atmosphere. Rietveld refinement of the XRD data showed that

    annealing the powders under argon atmosphere promoted the polymorphic phase transformation

    from anatase to rutile. Field emission scanning electron microscopy (FESEM) was employed to

    investigate the morphology and size of the annealed powders.

Publication Date


  • 2012

Citation


  • Salari, M., Rezaee, M., Chidembo, A. T., Konstantinov, K. & Liu, H. K. (2012). Rietveld analysis of the effect of annealing atmosphere on phase evolution of nanocrystalline TiO 2 powders. Journal of Nanoscience and Nanotechnology, 12 (6), 4724-4728.

Scopus Eid


  • 2-s2.0-84863933646

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1154&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/149

Number Of Pages


  • 4

Start Page


  • 4724

End Page


  • 4728

Volume


  • 12

Issue


  • 6

Abstract


  • The struclUral evolution of nanocrystaUine Ti02 was studied by X-ray diffraction (XRD) and the

    Rietveld refinement method (RRM). Ti02 powders were prepared by the sol-gel technique. Post

    annealing of as·synthesized powders in the temperature range from 500°C to 600 °C under air and

    argon atmospheres led to the formation of Ti02 nanoparticles with mean crystallite size in the range

    of 37-165 nm. based on the Rietveld refinement results. It was found that the phase structure,

    composition, and crystallite size of the resulting particles were dependent on not only the annealing

    temperature, but also the annealing atmosphere. Rietveld refinement of the XRD data showed that

    annealing the powders under argon atmosphere promoted the polymorphic phase transformation

    from anatase to rutile. Field emission scanning electron microscopy (FESEM) was employed to

    investigate the morphology and size of the annealed powders.

Publication Date


  • 2012

Citation


  • Salari, M., Rezaee, M., Chidembo, A. T., Konstantinov, K. & Liu, H. K. (2012). Rietveld analysis of the effect of annealing atmosphere on phase evolution of nanocrystalline TiO 2 powders. Journal of Nanoscience and Nanotechnology, 12 (6), 4724-4728.

Scopus Eid


  • 2-s2.0-84863933646

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1154&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/149

Number Of Pages


  • 4

Start Page


  • 4724

End Page


  • 4728

Volume


  • 12

Issue


  • 6