tailieunhanh - Effect of graphene-gold nanocomposites on the photocatalytic activity of TiO2

The synthesis of graphene (Gr) - gold (Au) nanoparticle (NP) composite was achieved using continuous ultraviolet wave exposure. The functional groups were investigated with FTIR spectra. From the Raman spectra, D-band and G-band of Gr were identified. As a result, the uniform deposition of nanometer-sized Au NPs on the Gr sheets was observed from the field emission scanning electron microscope (FE-SEM) images. The photodegradation of methylene blue in aqueous solutions was studied using various photocatalysts, including neat TiO2, Gr/TiO2 and Gr-Au/TiO2 composites. The Gr weight ratio in this research was 2% . The Gr2% /TiO2 composite had the highest photoactivity. | Effect of graphene-gold nanocomposites on the photocatalytic activity of TiO2

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