Preparation of glass carbon electrode modified with nanocrystalline nickel-decorated carbon nanotubes and electrocatalytic oxidation of methanol in alkaline solution |
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Authors: | Hongyan Xu Huaqiang Wu Dongmei Xu Qianyi Wang |
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Institution: | (1) College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China |
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Abstract: | Nanocrystalline nickel with an average diameter of about 16 nm and a face-centered cubic (fcc) structure was uniformly attached
to the surface of carbon nanotubes (CNT) by wet chemistry. The sample was characterized by X-ray powder diffraction and transmission
electron microscopy (TEM). A glass carbon electrode modified with nickel-modified multi-wall carbon nanotubes (MWCNTs-Ni/GCE)
was prepared. The electrochemical behavior of the MWCNTs-Ni/GCE and the electrocatalytic oxidation of methanol at the MWCNTs-Ni/GCE
were investigated by cyclic voltammetry in 1.0 mol/L NaOH solution. The cyclic voltammograms showed that the electron transfer
between β-Ni(OH)2 and β-NiOOH is mainly a diffusion-controlled quasireversible process, and that the electrode has high catalytic activity for the
electrooxidation of methanol in alkaline medium, revealing its potential application in alkaline rechargeable batteries and
fuel cells.
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Translated from Chinese Journal of Applied Chemistry, 2007, 24(5): 503–506 译自: 应用化学] |
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Keywords: | carbon nanotube Ni nanoparticles electrocatalytic oxidation methanol |
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