Graphene-based hollow TiO2 composites with enhanced photocatalytic activity for removal of pollutants |
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| Institution: | 1. Vitrum Laugaricio — Joint Glass Center of IIC SAS, TnUAD, FChPT STU, and RONA, Študentská 2, Trenčín SK-91150, Slovakia;2. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice CZ-532 10, Czech Republic;1. Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Catalytically active graphene-based hollow TiO2 composites(TiO2/RGO) were successfully synthesized via the solvothermal method. Hollow TiO2 microspheres are uniformly dispersed on RGO. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) were used for the characterization of prepared photocatalysts. The mass of GO was optimized in the photocatalytic removal of rhodamine B (RhB) as a model dye pollutants. The results showed that graphene-based hollow TiO2 composites exhibit a significantly enhanced photocatalytic activity in degradation of RhB under either UV or visible light irradiation. The formation of the graphene-based hollow TiO2 composites and the photocatalytic mechanisms under UV and visible light were also discussed. |
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| Keywords: | Hollow Solvothermal Photocatalytic Degradation |
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