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Synthesis of silica supported titania nanocomposite in controllable phase content and morphology

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Abstract

The silica supported titania nanocomposite thin films with controllable particle size and phase content were successfully prepared by a convenient post annealing approach involving in solid-solid interfacial reaction. The effects of growth conditions, such as the annealing temperature and silicon concentration on the particle size and phase content, were systematically studied by using Atomic force microscopy (AFM), Raman spectroscopy, X-ray diffraction (XRD), and X-ray spectroscopy (XPS). The results indicate that the silicon concentration is a dominant factor in the morphology, crystallization and phase transformation of these nanocomposites. A mechanism for the high temperature phase transformation is also proposed based on the migration of the oxygen vacancies.

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Authors and Affiliations

  1. Institute of Materials Research and Engineering, Singapore City, 117602, Singapore

    Yew Von Lim & Shijie Wang

  2. Department of Physics, National University of Singapore, Singapore City, 117542, Singapore

    Yew Von Lim, Haiming Fan & Yuanping Feng

  3. School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore City, 637551, Singapore

    Zexiang Shen

  4. Institute of Bioengineering and Nanotechnology, Singapore City, 138669, Singapore

    Chiang Huen Kang

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  1. Yew Von Lim
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  2. Haiming Fan
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  3. Zexiang Shen
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  4. Chiang Huen Kang
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  5. Yuanping Feng
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  6. Shijie Wang
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Correspondence to Haiming Fan.

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Lim, Y.V., Fan, H., Shen, Z. et al. Synthesis of silica supported titania nanocomposite in controllable phase content and morphology. Appl. Phys. A 95, 555–562 (2009). https://doi.org/10.1007/s00339-008-4942-z

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  • DOI: https://doi.org/10.1007/s00339-008-4942-z

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