Highly Efficient Photocatalysts: Polyoxometalate Synthons Enable Tailored CdS-MoS2 Morphologies and Enhanced H2 Evolution

Weize Sun, Haijun Pang, Shifa Ullah Khan, Ruoru Yang, Qiong Wu, Huiyuan Ma, Chi Ming Au, Wenlong Sun, Xinming Wang, Guixin Yang, Wing Yiu Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

The development of photocatalysts toward highly efficient H2 evolution reactions is a feasible strategy to achieve the effective conversion of solar energy and meet the increasing demand for new energy. To this end, we prepared two different CdS-MoS2 photocatalysts with unique morphologies ranging from hexagonal prisms to tetragonal nanotubes by carefully tuning polyoxometalate synthons. These two photocatalysts, namely, CdS-MoS2-1 and CdS-MoS2-2, both exhibited remarkable photocatalytic efficiency in H2 generation, among which CdS-MoS2-2 showed superior performance. In fact, the best catalytic hydrogen desorption rate of CdS-MoS2-2 is as high as 1815.5 μmol g-1 h-1. Such performance is superior to twice that of single CdS and almost four times that of pure MoS2. This obvious enhancement can be accredited to the highly open nanotube morphology and highly dispersed heterometallic composition of CdS-MoS2-2, which represents an excellent example of the highest noble-metal-free H2 evolution photocatalysts reported so far. Taken together, these findings suggest that the development of highly dispersed heterometallic catalysts is an auspicious route to realize highly efficient conversion of solar energy and that CdS-MoS2-2 represents a major advance in this field.

Original languageEnglish
Pages (from-to)35611-35621
Number of pages11
JournalACS Applied Materials and Interfaces
Volume15
Issue number29
DOIs
Publication statusPublished - 26 Jul 2023

Keywords

  • CdS
  • hydrogen evolution reaction
  • MoS
  • photocatalysts
  • polyoxometalate

ASJC Scopus subject areas

  • General Materials Science

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