Journal
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
Volume 28, Issue 2, Pages 189-193Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.pnsc.2018.02.003
Keywords
MoS2; Ta3N5 nanosheets; Heterostructure; Photocatalysis; Hydrogen evolution
Funding
- Australian Research Council
- Queensland node of the Australian National Fabrication Facility (ANFF)
- Australian Government Research Training Program Scholarship
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A noble-metal-free heterostructure composed of Ta3N5 nanosheets and MoS2 co-catalyst was developed as an efficient photocatalyst for hydrogen production. In special, the MoS2/Ta3N5 heterostructure with 5.2 wt% of MoS2 exhibits a H-2 generation rate of 119.4 mu mol h(-1) g(-1), which is comparable to that of Ta3N5 nanosheets with Pt as co-catalyst. The efficient H-2 generation for MoS2/Ta3N5 heterostructure is resulted from the short diffusion distance of photo-excited charge carriers in Ta3N5 nanosheets, efficient transfer of electrons from Ta3N5 nanosheets to MoS2 surface, and reduced overpotential for water reduction. Furthermore, the stability of the MoS2/Ta3N5 heterostructured photocatalysts are evaluated for the photocatalytic H-2 generation.
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