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Synthesis of highly dispersed and versatile anatase TiO2 nanocrystals on graphene sheets with enhanced photocatalytic performance for dye degradation

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Abstract

A highly dispersed and versatile anatase TiO2 nanocrystal on graphene sheets (TiO2–G) was synthesized by a simple solvent thermal method. The structural and optical properties of the as-synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–Vis absorption spectroscopy and Raman spectra. The results show that the anatase TiO2 nanocrystals with approximately 20–30 nm size are well distributed on the graphene sheets, and the introduction of graphene increases the light absorption intensity in visible light region. Noticeably, the TiO2–G exhibits excellent photocatalytic activity and reusability, and can be applied to the degradation of various organic dyes, such as methyl orange (MO), methyl blue (MB) and rhodamine-B (RhB). This unique TiO2–G composite photocatalyst proved to have great potentials for organic contaminants degradation in wastewater.

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Acknowledgements

This work was supported by National Nature Science Foundation of China (51601167) Science, Science and Technology Program of Shaanxi Province (2015SF262,2016SF334), Technology Program of Yulin (Gy13-10), Project of Education Department of Shaanxi Province (2013JK0751) and Special Research Program of Yulin University (14YK22) for financial support this research.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, YuLin University, Yulin, 719000, China

    Ying Gong, Xiangrong Ma, Rui Dang, Jieying Liu & Ju Cao

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  1. Ying Gong
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  2. Xiangrong Ma
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  3. Rui Dang
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  4. Jieying Liu
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  5. Ju Cao
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Correspondence to Ying Gong.

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Gong, Y., Ma, X., Dang, R. et al. Synthesis of highly dispersed and versatile anatase TiO2 nanocrystals on graphene sheets with enhanced photocatalytic performance for dye degradation. J Mater Sci: Mater Electron 28, 18883–18890 (2017). https://doi.org/10.1007/s10854-017-7841-2

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  • DOI: https://doi.org/10.1007/s10854-017-7841-2

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