Preparation of melamine-Ni-Cu nanocomposite as a promising catalytic substrate for methanol electrooxidation

Document Type : Original Article

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Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791, Zanjan, Iran

Abstract

Melamine is a nitrogen-rich compound. Its composite with transition metals has an electron-rich structure and increases electrocatalytic activity and charge transfer. In this study, a copper-nickel melamine nanocomposite was prepared through a hydrothermal process and its electrocatalytic activity was investigated on the surface of a glassy carbon electrode modified with multi-walled carbon nanotubes (GC/MWNT/MelCuNi) towards the oxidation reaction of methanol. (MOR). The stability of the synthesized catalyst was investigated by chronoamperometry (CA) technique. The surface morphology of the modified electrode was characterized by field emission scanning electron microscopy (FESEM) and the structure of the catalyst was determined by X-ray diffraction (XRD) patterns. The resulting MelCuNi nanocomposite has a higher current density (92 mA. Cm-2) and significantly better stability for the electrocatalytic oxidation of methanol. The effect of nickel and copper nanoparticles on the electrocatalytic performance of the synthesized nanocomposite in the presence and absence of melamine compared to MOR was also investigated.

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Applied Chemistry Today
Volume 19, Issue 72
September 2024
Pages 205-224

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