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Issue 8, 2011
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Well-crystallized square-like 2D BiOCl nanoplates: mannitol-assisted hydrothermal synthesis and improved visible-light-driven photocatalytic performance

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Abstract

Well-crystallized square-like bismuth oxychloride (BiOCl) nanoplates were successfully synthesized by a facile and environmentally friendly hydrothermal process in mannitol solution. The product was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), Raman spectroscopy, UV–vis diffuse reflection spectroscopy (DRS) and nitrogen adsorption. It was found that mannitol played a key role in the formation of square-like BiOCl nanoplates and the possible growth mechanism was also discussed. The photocatalytic activity of prepared BiOCl nanoplates was determined by the degradation of Rhodamine B (RhB) under visible light irradiation. The square-like BiOCl nanoplates exhibited excellent visible-light-driven photocatalytic efficiency, which was much higher than that of commercial BiOCl and TiO2 (anatase). The remarkable visible-light photocatalytic activity was mainly attributed to the synergistic effect of the layered structure and the strong adsorption of RhB dye upon the BiOCl nanoplates, which might allow more efficient transport of the injected electrons. A possible dye-sensitized photocatalytic degradation process (photosensitization pathway) was proposed.

Graphical abstract: Well-crystallized square-like 2D BiOCl nanoplates: mannitol-assisted hydrothermal synthesis and improved visible-light-driven photocatalytic performance

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Publication details

The article was received on 22 Jun 2011, accepted on 18 Aug 2011 and first published on 21 Oct 2011


Article type: Paper
DOI: 10.1039/C1RA00335F
Citation: RSC Adv., 2011,1, 1542-1553
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    Well-crystallized square-like 2D BiOCl nanoplates: mannitol-assisted hydrothermal synthesis and improved visible-light-driven photocatalytic performance

    J. Xiong, G. Cheng, G. Li, F. Qin and R. Chen, RSC Adv., 2011, 1, 1542
    DOI: 10.1039/C1RA00335F

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