The problem related to the oxidation of ethanol remains an attractive topic in the field of fuel cell due to the poisoning of the surface of electrode by CO species. Although many research have been conducted on this issue, no study has explored the combination of multi-walled carbon nanotubes (MWCT) /polyrrole and copper nanoparticules . Nanocomposites based on conducting polymers (CPs), metal nanoparticles (MNP) and/or carbon nanomaterials (CNM) can be combined to make use of the proprieties of each materials. They can be applied for different applications such as: supercapacitor, sensors, fuel cell and energy conversation. Here in, we will focused on electrode modified by multi-walled carbon nanotubes /polypyrrole and copper nanoparticles for oxidation of ethanol. The deposition of carbon nanotubes was carried out using drop casting mode, followed by deposition of the Polypyrrole and Copper nanoparticles using galvanostatic mode. Several parameters such as volume added of MWCT, concentration of monomer, supporting electrolyte and mode of polymerisation were investigated. Different techniques have been used for characterization of the prepared electrodes such as X-ray diffraction (XRD), Infrared Spectroscopy (IR), cyclic voltammetry and impedances techniques The morphology of the film was examined by Scanning Electron Spectroscopy (SEM) revealing that a morphology depends strongly on the material used as layer. The Copper nanoparticles have a filament structure with an average diameter around 190 nm. . The effect of the concentration of sodium hydroxide on the morphology of Copper oxide was also investigated. The obtained results shows that the introduction of multi-walled carbon nanotube in the surface of the electrode modified with polypyrrole and Copper nanoparticles enhance the performance of the electrode towards oxidation of ethanol as shown in Figure 1.

Electrocatalytic oxidation of ethanol using modified copper nanoparticles/polypyrrole and multi-walled carbon nanotubes paste electrode in alkaline media

2019 Fall National Meeting

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