Core–shell structured Cu@Pt nanoparticles as effective electrocatalyst for ethanol oxidation in alkaline medium |
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| Authors: | KM El-Khatib RM Abdel Hameed RS Amin Amani E Fetohi |
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| Affiliation: | 1. Chemical Engineering Department, National Research Center, Dokki, Giza, Egypt;2. Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt |
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| Abstract: | Core–shell nanoparticles of Cu@Pt/C electrocatalysts were synthesized using various Pt:Cu atomic ratios with NaBH4 as a reducing agent. The crystal structure and surface morphology were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The incorporation of copper in Cu@Pt/C electrocatalysts was found to shift all Pt diffraction planes in the negative direction with expanding the crystal lattice dimensions. The electrocatalytic activity of various Cu@Pt/C electrocatalysts was investigated using cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. Cu@Pt/C electrocatalysts containing Pt:Cu atomic ratios of 1:0.5 and 1:2 showed an enhanced electrochemical performance for ethanol oxidation when related to Pt/C. |
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| Keywords: | Nanomaterials Core–shell structure Alcohol oxidation Cu@Pt/C Electrochemical measurements |
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