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dc.contributor.authorLiu, Y.
dc.contributor.authorXu, J.
dc.contributor.authorWang, L.
dc.contributor.authorZhang, H.
dc.contributor.authorXu, P.
dc.contributor.authorDuan, Xiaoguang
dc.contributor.authorSun, H.
dc.contributor.authorWang, Shaobin
dc.date.accessioned2017-04-28T13:58:15Z
dc.date.available2017-04-28T13:58:15Z
dc.date.created2017-04-28T09:06:09Z
dc.date.issued2017
dc.identifier.citationLiu, Y. and Xu, J. and Wang, L. and Zhang, H. and Xu, P. and Duan, X. and Sun, H. et al. 2017. Three-dimensional BiOI/BiOX (X = Cl or Br) nanohybrids for enhanced visible-light photocatalytic activity. Nanomaterials. 7 (3).
dc.identifier.urihttp://hdl.handle.net/20.500.11937/52303
dc.identifier.doi10.3390/nano7030064
dc.description.abstract

© 2017 by the authors. Licensee MDPI, Basel, Switzerland.Three-dimensional flower-like BiOI/BiOX (X = Br or Cl) hybrids were synthesized via a facile one-pot solvothermal approach. With systematic characterizations by X-ray diffraction (XRD), scanning electron microscopy (SEM), Transmission electron microscopy (TEM), the Brunauer-Emmett-Teller (BET)specific surface area, X-ray photoelectron spectroscopy (XPS), and the UV-Vis diffuse reflectance spectra (DRS), the BiOI/BiOCl composites showed a fluffy and porous 3-D architecture with a large specific surface area (SSA) and high capability for light absorption. Among all the BiOX (X = Cl, Br, I) and BiOI/BiOX (X = Cl or Br) composites, BiOI/BiOCl stands out as the most efficient photocatalyst under both visible and UV light irradiations for methyl orange (MO) oxidation. The reaction rate of MO degradation on BiOI/BiOCl was 2.1 times higher than that on pure BiOI under visible light. Moreover, BiOI/BiOCl exhibited enhanced water oxidation efficiency for O2 evolution which was 1.5 times higher than BiOI. The enhancement of photocatalytic activity could be attributed to the formation of a heterojunction between BiOI and BiOCl, with a nanoporous structure, a larger SSA, and a stronger light absorbance capacity especially in the visible-light region. The in situ electron paramagnetic resonance (EPR) revealed that BiOI/BiOCl composites could effectively evolve superoxide radicals and hydroxyl radicals for photodegradation, and the superoxide radicals are the dominant reactive species. The superb photocatalytic activity of BiOI/BiOCl could be utilized for the degradation of various industrial dyes under natural sunlight irradiation which is of high significance for the remediation of industrial wastewater in the future.

dc.titleThree-dimensional BiOI/BiOX (X = Cl or Br) nanohybrids for enhanced visible-light photocatalytic activity
dc.typeJournal Article
dcterms.source.volume7
dcterms.source.number3
dcterms.source.issn2079-4991
dcterms.source.titleNanomaterials
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusOpen access via publisher


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