Abstract
Graphene–Bi2MoO6 (G–Bi2MoO6) hybrid photocatalysts were prepared by a simple one-step process in which the reduction of graphene oxide (GO) and the growth of Bi2MoO6 crystals occurred simultaneously. The material was characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption–desorption isotherms, X-ray photoelectron spectroscopy, UV–vis diffuse reflectance spectroscopy and Raman spectroscopy. The photocatalytic activity was investigated by the degradation of reactive brilliant red dye X-3B. An increase in photocatalytic activity was observed for G–Bi2MoO6 hybrids compared with pure Bi2MoO6 under visible light. This improvement was attributed to the following two reasons: increased migration efficiency of photo-induced electrons and increased adsorption activity for dye molecules. A study of the effect of the amount of graphene on the photocatalytic activity showed that there was an optimum amount of 2.5% (initial GO weight).
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