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Graphite-like carbon deposited anatase TiO2 single crystals as efficient visible-light photocatalysts

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Abstract

Graphite-like carbon deposited single-crystal anatase TiO2 with exposed {001} facets was fabricated through a two-step solvothermal process by using glucose as carbon source. The physicochemical properties of the as-prepared samples were investigated by X-ray diffraction, Brunauer-Emmett-Teller, transmission electron microscopy, Raman, UV–vis diffuse reflectance spectra, electrochemical impedance spectroscopy and surface photovoltage spectroscopy. These results demonstrated that graphite-like carbon layers were deposited on the surface of TiO2 single-crystal nanosheets with exposed highly reactive {001} facets via the dehydration of glucose during the process of hydrothermal treatment. The loading of the graphite-like carbon layers could effectively extend the light absorption edge of the single-crystal anatase TiO2 nanosheets to visible light region and accelerate the separation of photo-generated electrons and holes, contributing an excellent visible-light driven photocatalytic performance to the graphite-like carbon deposited single-crystal anatase TiO2 nanosheets for the degradation of methyl orange.

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Acknowledgments

This work was supported by the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the National Natural Science Foundation of China (21007040, 20825724, 21047009), Natural Science Funding of Shanghai (11ZR1426300), the Research Fund for the Doctoral Program of Higher Education (20103127120005), the Project supported by the Shanghai Committee of Science and Technology (10160503200), and by a Scheme administrated by Shanghai Normal University (8K201104).

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Authors and Affiliations

  1. Department of Chemistry, Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai, 200234, China

    Dieqing Zhang, Xiaolei Yang, Jian Zhu, Ya Zhang, Peng Zhang & Guisheng Li

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  1. Dieqing Zhang
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  2. Xiaolei Yang
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  3. Jian Zhu
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  4. Ya Zhang
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  5. Peng Zhang
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  6. Guisheng Li
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Correspondence to Jian Zhu or Guisheng Li.

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Zhang, D., Yang, X., Zhu, J. et al. Graphite-like carbon deposited anatase TiO2 single crystals as efficient visible-light photocatalysts. J Sol-Gel Sci Technol 58, 594–601 (2011). https://doi.org/10.1007/s10971-011-2433-8

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  • DOI: https://doi.org/10.1007/s10971-011-2433-8

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