Citation: ZHANG Chi, WU Zhi-Jiao, LIU Jian-Jun, PIAO Ling-Yu. Preparation of MoS₂/TiO₂ Composite Catalyst and Its Photocatalytic Hydrogen Production Activity under UV Irradiation[J]. Acta Physico-Chimica Sinica, ;2017, 33(7): 1492-1498. doi: 10.3866/PKU.WHXB201704141 shu

Preparation of MoS₂/TiO₂ Composite Catalyst and Its Photocatalytic Hydrogen Production Activity under UV Irradiation

1.
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
2.
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China

Received Date: 16 January 2017
Revised Date: 11 April 2017

Fund Project: The project was supported by the Ministry of Science and Technology of China (2016YFA0200900, 2016YFF0203803).

To study the activity of a composite photocatalyst for photocatalytic hydrogen production, we prepared and loaded MoS₂ nanosheets with TiO₂ nanoparticles using a hydrothermal method, thus forming a MoS₂/TiO₂ heterojunction composite catalyst. The structural and optical properties of the catalyst were characterized and analyzed by field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray powder diffraction, UV-Vis absorption spectra, Raman spectroscopy, and X-ray photoelectron spectroscopy. The activity of the photocatalyst was evaluated by its photocatalytic hydrogen production rate. The corresponding MoS₂ content of the catalyst was found to be 30%, and upon the exposure to 365nm UV light, a high photocatalytic hydrogen production rate of 1004 μmol^-1·h^-1·g^-1 was obtained. The catalytic rate is much greater than that obtained with MoS₂ or TiO₂ catalysts. The high hydrogen production rate indicated that the use of a MoS₂/TiO₂ composite catalyst can significantly improve the UV-induced photocatalytic hydrogen production performance. Because of the excellent photocatalytic hydrogen production performance of the MoS₂/TiO₂ composite, we studied and analyzed the hydrogen production mechanism.
- TiO₂,
- MoS₂,
- Composite structure,
- Heterojunction,
- Photocatalytic hydrogen production
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Preparation of MoS₂/TiO₂ Composite Catalyst and Its Photocatalytic Hydrogen Production Activity under UV Irradiation