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Issue 3, 2015
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Rapid adsorption and photocatalytic activity for Rhodamine B and Cr(vi) by ultrathin BiOI nanosheets with highly exposed {001} facets

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Abstract

Porous BiOI microspheres composed of ultrathin nanosheets were successfully fabricated using a simple solvothermal method, and subsequently characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflection spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller surface area (BET) measurements. High-resolution transmission electron microscopy (HRTEM) results show that the typical characteristics of nanosheets were mainly within the dominant exposed {001} facets. The BiOI samples obtained exhibit rapid adsorption and photocatalytic activity for the cationic organic dye Rhodamine B (RhB) and the heavy metal ion, Cr(VI), under irradiation with visible light, which is mainly ascribed to their high degree of crystallization, highly exposed {001} facets, unique mesoporous structures, relatively large effective specific surface area (∼77.22 m2 g−1) and appropriate energy band gap (1.81 eV). Moreover, the adsorption process for RhB and Cr(VI) with the as-prepared BiOI microspheres was also analyzed by pseudo-second-order kinetic model.

Graphical abstract: Rapid adsorption and photocatalytic activity for Rhodamine B and Cr(vi) by ultrathin BiOI nanosheets with highly exposed {001} facets

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Article information


Submitted
09 Oct 2014
Accepted
08 Dec 2014
First published
08 Dec 2014

New J. Chem., 2015,39, 1874-1882
Article type
Paper

Rapid adsorption and photocatalytic activity for Rhodamine B and Cr(VI) by ultrathin BiOI nanosheets with highly exposed {001} facets

J. Han, G. Zhu, M. Hojamberdiev, J. Peng, X. Zhang, Y. Liu, B. Ge and P. Liu, New J. Chem., 2015, 39, 1874
DOI: 10.1039/C4NJ01765J

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