Bismuth sulphide-modified molybdenum disulphide as an efficient photocatalyst for hydrogen production under simulated solar light

W. P.Cathie Lee, Meei Mei Gui, Lling Lling Tan, Ta Yeong Wu, S. Sumathi, Siang Piao Chai

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Abstract

To overcome rapid electron-hole recombination and the need for employing noble metals as co-catalysts for photocatalytic water splitting, the present work reports on the fabrication of bismuth sulphide (Bi2S3)-modified molybdenum disulphide (MoS2) as an efficient hybrid photocatalyst. Under simulated solar light irradiation, the Bi2S3/MoS2 photocatalyst with an optimum molar ratio of Mo to Bi of 50% (mol/mol) achieved a H2 production rate of 61.4 μmol/h. The photocatalytic enhancement was attributed to an effective charge transfer mechanism between Bi2S3 and MoS2, as evidenced by photoelectrochemical characterization. A plausible reaction mechanism over the as-prepared Bi2S3/MoS2 photocatalyst was also proposed based on the experimental results obtained.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalCatalysis Communications
Volume98
DOIs
Publication statusPublished - 10 Jul 2017

Keywords

  • Hydrogen production
  • Photocatalyst
  • Transition metal dichalcogenide

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