One-step synthesis of P-doped MoS2 for efficient photocatalytic hydrogen production

MoS2 is widely used in photocatalytic hydrogen production owing to its unique optical and electrical properties. However, the photocatalytic performance of pure MoS2 is usually limited by its narrow light absorption band, poor conductivity, and rapid photogenerated carrier recombination. Heteroatom...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-07, Vol.829, p.154635, Article 154635
Main Authors: Xin, Xu, Song, Yaru, Guo, Shaohui, Zhang, Youzi, Wang, Bilin, Wang, Yijin, Li, Xuanhua
Format: Article
Language:English
Subjects:
Absorption spectra
Carrier recombination
Catalytic activity
Electrical properties
Electrical resistivity
Electromagnetic absorption
Heteroatom doping
Hydrogen
Hydrogen evolution
Hydrogen production
Low resistance
Molybdenum disulfide
MoS2
Optical properties
Photocatalysis
Photocatalysts
Water splitting
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Summary:MoS2 is widely used in photocatalytic hydrogen production owing to its unique optical and electrical properties. However, the photocatalytic performance of pure MoS2 is usually limited by its narrow light absorption band, poor conductivity, and rapid photogenerated carrier recombination. Heteroatom doping is an effective method to improve the catalytic activity of photocatalysts. In this study, P-doped MoS2 was prepared by the one-step hydrothermal method for efficient photocatalytic hydrogen evolution. P-doped MoS2 exhibits wider spectra absorption compared to pure MoS2 because of the narrow bandgap from 1.84 eV to 1.77 eV, which can improve visible-light utilization. P-doped MoS2 also shows faster carrier transfer compared to pure MoS2 owing to its low resistance. As a result, P-doped MoS2 shows enhanced photocatalytic performance with a hydrogen production rate about 278.8 μmol/h/g, which is 2.8 times higher than that of pure MoS2 (99.4 μmol/h/g). The findings of this work will serve as a platform for the development of efficient photocatalysts. •The P-doped MoS2 has been synthesized by a simple one-step hydrothermal method.•The stronger and wider absorption of the P-doped MoS2 is helpful for photocatalysis.•The faster carriers transfer of P-doped MoS2 is achieved due to the low resistance.•The P-doped MoS2 exhibits the enhanced photocatalytic performance.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2020.154635