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    • Keywords


      V$_2$O$_5$; microwave; photocatalysis; reduced graphene oxide (rGO); nanocomposite.

    • Abstract


      In the present study, rapid and green microwave synthesis has been used to synthesize V$_2$O$_5$ and reduced graphene oxide decorated with V$_2$O$_5$, a hybrid nanocomposite (rGO/V$_2$O$_5$), using an inorganic precursor. The synthesized nanocomposite is characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and UV–visible spectroscopy. The photocatalytic activity of V$_2$O$_5$and rGO/V$_2$O$_5$ was studied by degrading methylene blue dye in sunlight. The kinetics of the dye degradation is studied by calculating the rate constant and the half-life of the degradation process. The rGO/V$_2$O$_5$ nanocomposite showed low resistance, thus increasing the diffusion of electrons, which prevents electron–hole recombination and hence enhances photocatalytic activity (80% degradation efficiency) when compared with bare V$_2$O$_5$.

    • Graphical Abstract


    • Author Affiliations



      1. Materials Research Centre, Indian Institute of Science, Bengaluru 560012, India
      2. Present Address: Department of Materials Science and Chemical Engineering, Stony Brook University, New York 11794, USA
      3. Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru 560012, India
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    • Supplementary Material

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