Journal
RSC ADVANCES
Volume 7, Issue 5, Pages 2943-2952Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra26110h
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Funding
- State Key Laboratory of Lake Science and Environment [2016SKL011]
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A novel Bi2MoO6-MIL-100(Fe) heterostructure photocatalyst was synthesized by a facile solvothermal method for the first time, and characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectra, transmission electron microscopy, and photoluminescence spectra. The as-prepared Bi2MoO6-MIL-100(Fe) composites exhibited excellent photocatalytic activity and stability towards the degradation of Rhodamine B (RhB) under visible light irradiation. The introduction of MIL-100(Fe) into semiconductor Bi2MoO6 improved the photocatalytic performance remarkably, and the optimal composite with 9% MIL-100(Fe) content showed the highest photocatalytic activity. According to the active radical trapping experiments, the h(+) and O-center dot(2) radicals were the two main active species in the photocatalytic reaction. The enhanced photocatalytic performance is mainly attributed to the formation of the Bi2MoO6-MIL-100(Fe) heterostructure, which is beneficial to the transfer and separation of photo-generated electron-hole pairs. The possible mechanism of the enhanced photocatalytic performance of the Bi2MoO6-MIL-100(Fe) composites was discussed.
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