期刊
MICRO & NANO LETTERS
卷 6, 期 11, 页码 932-936出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2011.0460
关键词
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资金
- Government of Aragon and 'La Caixa' [GA-LC-041/2008]
- Spanish Ministry of Science and Innovation [EUI2008-00152]
The MoS2 nanocrystals coupled with anatase nanoparticles were prepared by the solvothermal method at relatively low temperatures. It was determined that the materials consisted of 15-20 nm diameter anatase nanoparticles with highly dispersed MoS2 nanocrystals of approximately 3-7 nm in size. Visible light absorption in the MoS2-TiO2 samples increased with the MoS2 content. However, their lambda edges (lambda(edge)) remained almost identical at approximately 390 nm, meaning that MoS2 did not cause a red shift in the anatase bandgap energy. The hybrid MoS2-anatase materials had higher surface area (70-124 m(2) g(-1)) than commercial TiO2 (P25) (50 m(2) g(-1)). The MoS2-anatase hybrid nanocrystals showed enhanced activity in the oxidation of methylene blue in water under UV light irradiation. A photomechanism able to elucidate the observed dye decolourisation was suggested.
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