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Hydrothermal synthesis of MoS2 nanosheet loaded TiO2 nanoarrays for enhanced visible light photocatalytic applications

机译：用于增强的可见光光催化应用的MOS2纳米纳米纳米纳米载荷的水热合成纳米载体

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摘要

A molybdenum disulfide (MoS2) nanosheet-decorated titanium dioxide (TiO2) NRA heterojunction composite was fabricated successfully through a two-step hydrothermal approach. Microstructures and optical properties of specimens were characterized by field-emission scanning electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, and ultraviolet-visible spectroscopy. The gaps of the TiO2 nanorods have been filled with tiny MoS2 nanosheets, which can increase the surface area of MoS2/TiO2 NRA composite thin films. In addition, the photocatalytic activity of the thin films were measured and discussed in greater detail. The appropriate hydrothermal reaction temperature of MoS2 is important for the growth of perfect MoS2/TiO2 NRA composites with significantly enhanced photocatalytic performance. The photodegradation rate and k value of MoS2-220/TiO2 are 86% and 0.0105 min(-1), respectively, which are much larger than those of blank TiO2. The enhanced photocatalytic performance could be attributed to the higher visible light absorption and the reduced recombination rate of photogenerated electron-hole pairs.
机译：二硫化钼（二硫化钼）纳米片装饰二氧化钛（TiO）NRA异质结复合材料通过两步水热方法成功地制备。通过现场发射扫描电子显微镜，X射线衍射法，X射线光电子谱和紫外线可见光谱，表征样品的微观结构和光学性质。 TiO2纳米棒的间隙已经填充有微小的MOS2纳米片，这可以增加MOS2 / TiO2 NRA复合薄膜的表面积。另外，测量薄膜的光催化活性并更详细地讨论。 MOS2的适当水热反应温度对于具有显着增强的光催化性能的完美MOS2 / TiO2 NRA复合材料的生长是重要的。 MOS2-220 / TiO2的光降解速率和k值分别为86％和0.0105分钟（-1），其远大于空白TiO2。增强的光催化性能可能归因于较高的可见光吸收和光生电子孔对的重组率降低。

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  • 来源
    《RSC Advances》 |2019年第6期|共7页
  • 作者

    Zhang Miao; Wang Shun; Li Ziliang; Liu Chunwang; Miao Rui; He Gang; Zhao Min; Xue Jun; Xia Zhiyuan; Wang Yongqi; Sun Zhaoqi; Lv Jianguo;

  • 作者单位

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230039 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230039 Anhui Peoples R China;

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230039 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230039 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230039 Anhui Peoples R China;

    Hefei Normal Univ Sch Phys &

    Mat Engn Hefei 230601 Anhui Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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