Influence of the Amount of Hydrogen Fluoride on the Formation of (001)-Faceted Titanium Dioxide Nanosheets and Their Photocatalytic Hydrogen Generation Performance

Authors

  • Dr. Yuliang Zhang,

    1. Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)
    2. Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai, 201306 (P. R. China)
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  • Dr. Mingwei Shang,

    1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042 (P. R. China)
    2. Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, MO 65897 (USA)
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  • Yifan Mi,

    1. Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123 (P. R. China)
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  • Ting Xia,

    1. Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)
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  • Petra Wallenmeyer,

    1. Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)
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  • Prof. Dr. James Murowchick,

    1. Department of Geosciences, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)
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  • Prof. Dr. Lifeng Dong,

    1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042 (P. R. China)
    2. Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, MO 65897 (USA)
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  • Prof. Dr. Qiao Zhang,

    1. Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123 (P. R. China)
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  • Prof. Xiaobo Chen

    Corresponding author
    1. Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)
    • Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110 (USA)===

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Abstract

The influence of the amount of hydrogen fluoride (HF) on product formation from the hydrothermal reaction of titanium butoxide and concentrated HF is investigated. Low HF contents lead to a preference for the formation of small TiO2 nanoparticles, medium HF contents lead to a preference for TiO2 nanosheets, and high HF contents lead to a preference for large TiOF2 particles. Meanwhile, TiO2 nanosheets display higher activity in photocatalytic hydrogen generation than that of smaller TiO2 nanoparticles; this demonstrates the higher photocatalytic activity of (001) facets over others. The synergistic effect between TiO2 nanosheets and TiOF2 particles could improve the performance of TiO2 nanosheets owing to possible charge separation over their interface, although TiOF2 particles themselves barely show any activity.

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