期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 258, 期 -, 页码 526-535出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2017.11.017
关键词
1D; 2D; Layered materials; Photocatalysts; Heterojunction; Self-assembled
资金
- National Research Foundation of Korea (NRF)
- Ministry of Science, ICT, and Future Planning [2017R1A2B1004860]
- National Research Foundation of Korea (NRF) - Korea government [NRF-2015R1A2A2A01003741, NRF-2017R1A4A1015581]
- UNIST (Ulsan National Institute of Science Technology) [1.170013.01]
The development of high-activity, long-life, precious-metal-free photocatalysts for redox reactions in photo-electrochemical cells and fuel cells remains challenging. The synthesis of high-activity heterostructured photocatalysts is crucial for efficient energy conversion strategies. Herein, a novel photocatalyst based on 1D Bi2S3 nanorods self-assembled on 2D exfoliated tungsten disulfide (e-WS2) nanosheets has been developed for the degradation of methyl orange (MO) dye in aqueous solution. We demonstrate a novel and facile hydrothermal method for the synthesis of a Bi2S3 nanorod/e-WS2 nanosheet heterostructure. The photo catalytic properties of the heterostructure under visible light were investigated. Enhanced photocatalytic activity was attributed to the presence of strong surface active sites, as well as the specific morphology of the composite. We also observed the fast transfer of electron-hole pairs at the material interface. This work demonstrates a non-noble semiconductor photocatalyst for the degradation of pollutants and evolution of H-2.
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