Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Characterization of MoS2/Graphene-TiO2 Ternary Photocatalysts for High-Efficiency Hydrogen Production under Visible Light

  • Zhang, Feng-Jun (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Kong, Cui (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Li, Xuan (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Sun, Xian-Yang (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Xie, Wen-Jie (Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University) ;
  • Oh, Won-Chun (Department of Advanced Materials Science & Engineering, Hanseo University)
  • Received : 2019.04.17
  • Accepted : 2019.05.07
  • Published : 2019.05.31
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Abstract

Ternary MoS2/graphene (G)-TiO2 photocatalysts were prepared by a simple hydrothermal method. The morphology, phase structure, band gap, and catalytic properties of the prepared samples were investigated by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, UV-vis spectrophotometry, and Brunauer-Emmett-Teller surface area measurement. The H2 production efficiency of the prepared catalysts was tested in methanol-water mixture under visible light. MoS2/G-TiO2 exhibited the highest activity for photocatalytic H2 production. For 5 wt.% and 1 wt.% MoS2 and graphene (5MT-1G), the production rate of H2 was as high as 1989 µmol-1h-1. The catalyst 5MT-1G showed H2 production activity that was ~ 11.3, 5.6, and 4.1 times higher than those of pure TiO2, 1GT, and 5MT, respectively. The unique structure and morphology of the MoS2/G-TiO2 photocatalyst contributed to its improved hydrogen production efficiency under visible light.

Keywords

References

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