Citation: Baojun Ma, Ruisheng Zhang, Keying Lin, Hongxia Liu, Xiaoyan Wang, Wanyi Liu, Haijuan Zhan. Large-scale synthesis of noble-metal-free phosphide/CdS composite photocatalysts for enhanced H₂ evolution under visible light irradiation[J]. Chinese Journal of Catalysis, ;2018, 39(3): 527-533. doi: 10.1016/S1872-2067(17)62931-0 shu

Large-scale synthesis of noble-metal-free phosphide/CdS composite photocatalysts for enhanced H₂ evolution under visible light irradiation

State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, Ningxia, China

Received Date: 27 September 2017
Revised Date: 21 October 2017

Fund Project: This work was supported by the National First-rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology), the Major Innovation Projects for Building First-class Universities in China's Western Region (ZKZD2017003), the University Research Project of Ningxia (NGY2015027), the National Natural Science Foundation of China (21263018), and the Project of Science and Technology of Personnel of Study Abroad (Ningxia (2014) 486).

Photocatalytic H₂ evolution under visible light irradiation is an ideal process for solving energy shortage. The low cost of photocatalysts and high efficiency of hydrogen evolution are the two key factors to realize the industrialization of the process. The substitution of a noble-metal cocatalyst with a non-noble-metal catalyst can significantly reduce the cost of the photocatalyst. The large-scale synthesis and assembly of semiconductors and non-noble-metal cocatalysts to form photocatalysts through a simple method can further decrease the cost of photocatalysis. Here, we report a large-scale and low-cost coprecipitation method to form phosphide/CdS photocatalysts to realize photocatalytic H₂ evolution. CoP and MoP cocatalysts significantly enhanced the photocatalytic production of hydrogen. The optimal H₂ production rates on CoP/CdS and MoP/CdS were 140and 78 μmol/h, which were 7.0 and 4.0 times higher than those obtained with bare CdS, respectively, and 2.0 times and 1.1 times higher than those obtained with 1.0% Pt/CdS, respectively. This work provides a practical method for the large-scale preparation of low-cost photocatalysts.
- Coprecipitation,
- Cocatalyst,
- Phosphide,
- Photocatalysis,
- Hydrogen production
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沈阳化工大学材料科学与工程学院沈阳 110142

Large-scale synthesis of noble-metal-free phosphide/CdS composite photocatalysts for enhanced H2 evolution under visible light irradiation

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通讯作者: 陈斌, bchen63@163.com

Large-scale synthesis of noble-metal-free phosphide/CdS composite photocatalysts for enhanced H₂ evolution under visible light irradiation