Highly Active Nickel Nanoparticles Supported on TiO2 Nanotube Electrodes for Methanol Electrooxidation |
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Authors: | M G Hosseini M M Momeni M Faraji |
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Institution: | Electrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry Faculty, University of Tabriz, Iran |
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Abstract: | Nickel nanoparticles/TiO2 nanotubes/Ti electrodes were prepared by galvanic deposition of nickel nanoparticles on the TiO2 nanotubes layer on titanium substrates. Titanium oxide nanotubes were fabricated by anodizing titanium foil in a DMSO fluoride‐containing electrolyte. The morphology and surface characteristics of titanium dioxide nanotubes and Ni/TiO2/Ti electrodes were investigated using scanning electron microscopy and energy‐dispersive X‐ray spectroscopy, respectively. The results indicated that nickel nanoparticles were homogeneously deposited on the surface of TiO2 nanotubes. The electrocatalytic behaviour of nickel nanoparticles/TiO2/Ti electrodes for the methanol electrooxidation was studied by electrochemical impedance spectroscopy, cyclic voltammetry, differential pulse voltammetry and chronoamperometry methods. The results showed that Ni/TiO2/Ti electrodes exhibit a considerably higher electrocatalytic activity toward the oxidation of methanol. |
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Keywords: | Methanol Ni/TiO2/Ti Electrode Cyclic voltammetry Electrocatalysis |
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