期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 27, 页码 13225-13235出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta03462a
关键词
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2015R1A3A2033469]
Solar-driven production of chemical fuels through photocatalysis holds great promise for addressing the ever-increasing energy and environmental issues. However, its practical application is limited due to low light harvesting efficiency, fast charge recombination, and low stability of current photocatalysts. Here, we introduce a high-performance solar energy conversion platform constructed by the intimate coupling of two different complementary semiconductors (MoS2 and CdS) and morphology-controlled plasmonic metal nanocrystals (concave cubic Au nanocrystals) in a controlled manner. The sequential Au nanocrystal anchoring and CdS growth on two-dimensional exfoliated MoS2 nanosheets successfully yielded intimately coupled plasmonic metal-semiconductor ternary hybrids. The prepared hybrid photocatalysts exhibited superb hydrogen evolution capability under visible-light irradiation, which can be attributed to the synergistic integration of the advantages of semiconductor-semiconductor coupling, such as the broadening of light absorption and the retardation of charge recombination, and plasmon energy transfer from Au nanocrystals to semiconductors via the hot electron transfer mechanism.
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