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Two-step template-free route for synthesis of TiO2 hollow spheres

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Abstract

The TiO2 hollow microspheres were prepared by microwave-assisted solvothermal treatment without template. The morphology and the phase of TiO2 hollow microspheres were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), and BET surface areas. The results show that the particles have hollow structures and the shell was covered by nanocrystals and have higher specific surface area. The possible formation mechanism of hollow TiO2 spherical structures has simply been proposed. The activity was evaluated by the photocatalytic degradation of methyl orange (MO). The results show that the particles having specific surface area show higher photocatalytic activity. It can be attribute to the doped F atoms and the creation of oxygen vacancies.

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Acknowledgements

This research was financially supported by the Doctoral Research Start-up Fund of Shaanxi University of Science and Technology (BJ08-01), Special Fund from Shaanxi Provincial Department of Education (09JK352), and the Graduate Innovation Found of Shaanxi University of Science and Technology.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an, 710021, People’s Republic of China

    Zhenfeng Zhu, Zuoli He, Junqi Li, Jiaqi Zhou, Na Wei & Dianguang Liu

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  1. Zhenfeng Zhu
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  2. Zuoli He
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  3. Junqi Li
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  4. Jiaqi Zhou
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  5. Na Wei
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Correspondence to Zhenfeng Zhu.

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Zhu, Z., He, Z., Li, J. et al. Two-step template-free route for synthesis of TiO2 hollow spheres. J Mater Sci 46, 931–937 (2011). https://doi.org/10.1007/s10853-010-4837-1

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  • DOI: https://doi.org/10.1007/s10853-010-4837-1

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