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Article
Visible light-induced enhanced photoelectrochemical.pdf
New J. Chem (2015)
  • Mohammad Ehtisham Khan, School of Chemical Engineering Yeungnam University
Abstract
This paper reports a novel one-pot biogenic synthesis of Au–SnO2 nanocomposite using electrochemically
active biofilm. The synthesis, morphology and structure of the as-synthesized Au–SnO2 nanocomposite
were in-depth studied and confirmed by UV-vis spectroscopy, photoluminescence spectroscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. It was observed
that the SnO2 surface was decorated homogeneously with Au nanoparticles. The photoelectrochemical
behavior of the Au–SnO2 nanocomposite was examined by cyclic voltammetry, differential pulse voltammetry, electrochemical impedance spectroscopy, and linear sweep voltammetry in the dark and under visible
light irradiation. Visible light-induced photoelectrochemical studies confirmed that the Au–SnO2 nanocomposite had enhanced activities compared to the P–SnO2 nanoparticles. The Au–SnO2 nanocomposite was
also tested for the visible light-induced photocatalytic degradation of Congo red and methylene blue, and
showed approximately 10 and 6-fold higher photocatalytic degradation activity, respectively, compared to
P–SnO2. These results showed that the Au–SnO2 nanocomposite exhibits excellent and higher visible lightinduced photoelectrochemical and photocatalytic activities than the P–SnO2 nanoparticles, and can be used
for a wide range of applications.
Keywords
  • EAB,
  • AuNPs,
  • SnO2NPs,
  • Au-SnO2 nanocomoposite,
  • photocatalysis,
  • photoelectrochemical,
  • energy applications
Disciplines
Publication Date
Winter January 27, 2015
Citation Information
Mohammad Ehtisham Khan. "Visible light-induced enhanced photoelectrochemical.pdf" New J. Chem (2015)
Available at: http://works.bepress.com/mohammadehtisham-khan/5/