Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 559, Issue -, Pages 116-122Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.01.069
Keywords
Heterojunction composites; Photocatalytic; p-CuBi2O4/n-NaTaO3; Visible light; Electron-hole separation
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In this study, a series of p-CuBi2O4/n-NaTaO3 heteronanostructures were synthesized with the grinding-annealing method. The photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS) and UV-vis diffuse reflectance spectroscopy (DRS). The photocatalysts exhibit enhanced photocatalytic activity for methyl blue dye degradation under visible-light irradiation. The highest photocatalytic degradation efficiency was observed when the sample calcined at 500 degrees C with 50 wt.% CuBi2O4 content. On the basis of the calculated energy band positions, the mechanism of enhanced photocatalytic activity was discussed. (C) 2013 Elsevier B.V. All rights reserved.
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