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Issue 19, 2015
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Microwave-assisted synthesis of few-layered MoS2/BiOBr hollow microspheres with superior visible-light-response photocatalytic activity for ciprofloxacin removal

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Abstract

BiOBr hollow microspheres attached to few-layered molybdenum disulfide (MoS2) were prepared by an ethylene glycol (EG)-assisted microwave process in the presence of 1-hexadecyl-3-methylimidazolium bromine ([C16mim]Br). The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and UV-vis diffuse reflectance spectroscopy (DRS). During the reaction process, the ionic liquid [C16mim]Br acts as not only a solvent and Br source, but also as a microwave-absorbing agent and template for the fabrication of MoS2/BiOBr hollow microspheres. In addition, the photocatalytic activity of MoS2/BiOBr was evaluated for the degradation of ciprofloxacin (CIP) and Rhodamine B (RhB) under visible light irradiation. The results indicated that 0.2 wt% MoS2/BiOBr microspheres exhibit higher photocatalytic activity than BiOBr. A possible photocatalytic mechanism based on the relative band position of MoS2 and BiOBr was proposed.

Graphical abstract: Microwave-assisted synthesis of few-layered MoS2/BiOBr hollow microspheres with superior visible-light-response photocatalytic activity for ciprofloxacin removal

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Publication details

The article was received on 17 Feb 2015, accepted on 17 Mar 2015 and first published on 18 Mar 2015


Article type: Paper
DOI: 10.1039/C5CE00347D
Citation: CrystEngComm, 2015,17, 3645-3651
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    Microwave-assisted synthesis of few-layered MoS2/BiOBr hollow microspheres with superior visible-light-response photocatalytic activity for ciprofloxacin removal

    J. Xia, Y. Ge, D. Zhao, J. Di, M. Ji, S. Yin, H. Li and R. Chen, CrystEngComm, 2015, 17, 3645
    DOI: 10.1039/C5CE00347D

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