Journal
DALTON TRANSACTIONS
Volume 47, Issue 30, Pages 10046-10056Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt02109k
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Funding
- National Natural Science Foundation of China [21777038, 21705034]
- Key scientific research project of higher education of the Henan province [18A150032, 16A610003]
- Henan Normal University [qd16116]
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In this study, a novel few-layer WS2/Bi2MoO6 heterojunction with greatly enhanced visible light photocatalytic performance was synthesized via a facile hydrothermal method. The results indicated that Bi2MoO6 nanosheets were directly grown on the surface of few-layer WS2 and form plate-on-plate heterojunctions. The synthesized nanocomposites exhibited excellent photocatalytic activity under visible-light irradiation. The optimal composite with 5 wt% WS2 showed the highest photocatalytic activity, whose degradation efficiencies and TOC removal were 99.5% and 91.7% for rhodamine B (RhB), 98.9% and 89.8% for ciprofloxacin (CIP), 76.0% and 67.8% for methylene blue (MB), and 69.3% and 58.6% for methimazole (MMI), respectively. Their excellent photocatalytic performance was predominantly ascribed to the construction of a plate-on-plate heterojunction structure between WS2 and Bi2MoO6, which could promote charge separation efficiency and enhance light harvesting efficiency. The present work provides a new understanding for extending the application of transition-metal dichalcogenides in the field of photocatalysis.
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