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Fabrication of WO3 nanorods on graphene nanosheets.pdf
RSV Advances (2016)
  • Mohammad Ehtisham Khan, School of Chemical Engineering Yeungnam University
Abstract
Tngsten oxide (WO3) nanorods were grown on pure-graphene (P-graphene) nanosheets using
a template-free and surfactant-less hydrothermal process at 200 C. The synthesis and purity of the
synthesized WO3 nanorods-graphene nanostructure was confirmed by UV-vis diffuse reflectance
measurements, photoluminescence spectroscopy, X-ray diffraction, Raman spectroscopy, transmission
electron microscopy and X-ray photoelectron spectroscopy. The results showed that WO3 nanorods
were well distributed over the graphene nanosheets. The photocatalytic activity of the WO3 nanorods
graphene nanostructure was tested for the photocatalytic degradation of the organic model pollutant
dye under visible light irradiation. The photocapacitance performance of the as-prepared nanostructure
was examined by cyclic voltammetry. The superior photocapacitive and photocatalytic performances of
the WO3 nanorodsgraphene nanostructure were observed which was mainly attributed to the
combination of WO3 nanorods with graphene nanosheets. WO3 nanorods themselves have
photocatalytic properties but the overall performance of the WO3 nanorodsgraphene nanostructure
was significantly improved when WO3 nanorods were combined with the graphene nanosheets because
of the fascinating properties such as high mobility of charge carriers and unique transport performance
of graphene nanosheets. The robust nanocomposite structure, better conductivity, large surface area,
and good flexibility of the WO3 nanorodsgraphene nanostructure appears to be responsible for the
enhanced performances. This methodology and the highlighted results open up new ways of obtaining
photoactive WO3 nanorodsgraphene nanostructure for potential practical applications such as visible
light-induced photocatalysis and photocapacitive studies.
Keywords
  • WO3 nanorods,
  • graphene,
  • WO3-graphene,
  • Nanocomposite,
  • hydrothermal,
  • photocatalysis,
  • photoelectrochemical,
  • supercapacitor,
  • energy application
Disciplines
Publication Date
Winter February 13, 2016
Citation Information
Mohammad Ehtisham Khan. "Fabrication of WO3 nanorods on graphene nanosheets.pdf" RSV Advances (2016)
Available at: http://works.bepress.com/mohammadehtisham-khan/6/