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From MoS2 Microspheres to α-MoO3 Nanoplates: Growth Mechanism and Photocatalytic Activities

Authors

  • Mianzeng Zhong,

    1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China, http://www.zjnu.edu.cn/
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  • Zhongming Wei,

    Corresponding author
    1. Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark http://nano.ku.dk/english
    • Zhongming Wei, Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark===

      Jingbo Li, Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China===

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  • Xiuqing Meng,

    1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China, http://www.zjnu.edu.cn/
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  • Fengmin Wu,

    1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China, http://www.zjnu.edu.cn/
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  • Jingbo Li

    Corresponding author
    1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China, http://www.zjnu.edu.cn/
    2. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, China http://www.semi.ac.cn/
    • Zhongming Wei, Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark===

      Jingbo Li, Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China===

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Abstract

Flowerlike MoS2 microspheres were synthesized through a hydrothermal method. 2H-MoS2 nanoparticles, MoS2/MoO3 heterojunctions, and α-MoO3 nanoplates were prepared by annealing the MoS2 microspheres under different reaction conditions. The formation and growth mechanism of the samples from flowerlike MoS2 microspheres to α-MoO3 nanoplates is explained in detail. The photocatalytic properties of the four samples for the degradation of rhodamine B (RhB) under visible-light irradiation were studied. The results showed that the flowerlike MoS2 microspheres, MoS2/α-MoO3 heterojunctions, and α-MoO3 nanoplates all have excellent photocatalytic activities. In particular, the flowerlike MoS2 microspheres exhibit the highest photocatalytic activity for the degradation of RhB.

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