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https://www.ias.ac.in/article/fulltext/boms/045/0135 -
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$_5$.
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Graphical Abstract
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Author Affiliations
DEVANSHI BHARDWAJ1 2 SAHIL SANGWAN1 S A SHIVASHANKAR3 A M UMARJI1
- Materials Research Centre, Indian Institute of Science, Bengaluru 560012, India
- Present Address: Department of Materials Science and Chemical Engineering, Stony Brook University, New York 11794, USA
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru 560012, India
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Dates
- Published
- 12 July 2022
- Manuscript received
- 29 November 2021
- Accepted
- 6 March 2022
- Final version published online
- 12 July 2022
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Supplementary Material
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Bulletin of Materials Science
Volume 46, 2023
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