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Issue 103, 2016, Issue in Progress
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Electronic band structure and visible-light photocatalytic activity of Bi2WO6: elucidating the effect of lutetium doping

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Abstract

Bismuth tungstate and 5% Lu-doped bismuth tungstate photocatalysts were synthesized by coprecipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectra (DRS), and Brunauer–Emmett–Teller (BET) surface area. The effect of lutetium doping on electronic structure was investigated using density functional theory calculations (DFT). The change of morphological and optical band gap was conditioned by lutetium doping. Under visible light irradiation, the as-prepared sheet-like Lu-Bi2WO6 sample exhibits the highest visible-light-responsive photocatalytic performance than pure Bi2WO6 for the degradation of Methylene Blue (MB). The photocatalytic mechanism was explained on the basis of electrochemical impedance spectroscopy (EIS), photoluminescence (PL) spectra, active trapping measurements and optoelectronic properties.

Graphical abstract: Electronic band structure and visible-light photocatalytic activity of Bi2WO6: elucidating the effect of lutetium doping

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Publication details

The article was received on 11 Sep 2016, accepted on 13 Oct 2016 and first published on 19 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA22669H
Citation: RSC Adv., 2016,6, 101105-101114
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    Electronic band structure and visible-light photocatalytic activity of Bi2WO6: elucidating the effect of lutetium doping

    H. Ait Ahsaine, A. El jaouhari, A. Slassi, M. Ezahri, A. Benlhachemi, B. Bakiz, F. Guinneton and J.-R. Gavarri, RSC Adv., 2016, 6, 101105
    DOI: 10.1039/C6RA22669H

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