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Citation: HU Han-Mei, XU Jun-Chan, GE Xin-Qing, SUN Mei, XUAN Han, ZHANG Ke-Hua. Hierarchical MoO2 Microspheres：Hydrothermal Synthesis and Photocatalytic Performance for Degradation of Rhodamine B[J]. Chinese Journal of Inorganic Chemistry, ;2014, (2): 398-404. doi: 10.11862/CJIC.2014.060 shu

Hierarchical MoO2 Microspheres：Hydrothermal Synthesis and Photocatalytic Performance for Degradation of Rhodamine B

  • 1.

    1 Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, China;

  • Corresponding author: HU Han-Mei, 
  • Received Date: 27 June 2013
    Available Online: 11 October 2013

    Fund Project:

  • Monodispersed and uniform hierarchical MoO2 microspheres were synthesized through a one-pot hydrothermal reduction route. The crystal structure and morphology of the as-prepared products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and UV-Visible absorption spectroscopy. The results indicate that the MoO2 microspheres with the size of 1.5 to 3.5 μm are assembled by tiny nanoflakes or nanoparticles. Comparative experimental results reveal that the parameters of synthetic conditions, such as the amount of reducing agent citric acid (C6H8O7, CA) and mineralizer Na2CO3, greatly affect the growth of monodisperse MoO2 microspheres. The orientated aggregation combining with Ostwald ripening growth mechanism of the MoO2 microspheres was proposed, based on the evolution of the structure and the morphology with the extension of reaction time. Photocatalytic results indicate that the prepared MoO2 microspheres exhibit higher photocatalytic activity for the degradation of Rhodamine B (RhB) in the presence of H2O2 under tungsten lamp irradiation.
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