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http://dx.doi.org/10.4191/kcers.2019.56.3.06

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)
Publication Information
Journal of the Korean Ceramic Society / v.56, no.3, 2019 , pp. 284-290 More about this Journal
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
Heterojunction; Hydrogen production; Visible light;
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