Ivanova, N.M.; Muldakhmetov, Z.M.; Soboleva, Y.A.; Vissurkhanova, Y.A.; Beisenbekova, M.E. Preparation and Electrocatalytic Activity of Bimetallic Ni-Cu Micro- and Nanoparticles. Catalysts2023, 13, 1166.
Ivanova, N.M.; Muldakhmetov, Z.M.; Soboleva, Y.A.; Vissurkhanova, Y.A.; Beisenbekova, M.E. Preparation and Electrocatalytic Activity of Bimetallic Ni-Cu Micro- and Nanoparticles. Catalysts 2023, 13, 1166.
Ivanova, N.M.; Muldakhmetov, Z.M.; Soboleva, Y.A.; Vissurkhanova, Y.A.; Beisenbekova, M.E. Preparation and Electrocatalytic Activity of Bimetallic Ni-Cu Micro- and Nanoparticles. Catalysts2023, 13, 1166.
Ivanova, N.M.; Muldakhmetov, Z.M.; Soboleva, Y.A.; Vissurkhanova, Y.A.; Beisenbekova, M.E. Preparation and Electrocatalytic Activity of Bimetallic Ni-Cu Micro- and Nanoparticles. Catalysts 2023, 13, 1166.
Abstract
Bimetallic Ni/Cu core-shell and Cu-Ni heterostructural micro- and nanoparticles were prepared using two simple successive reduction procedures. Monometallic Ni and Cu particles were synthesized for comparison. The phase constitutions and morphological features of the particles were studied by means of X-ray diffraction, energy-dispersive X-ray spectroscopy and scanning electron microscopy methods. All the obtained mono- and bimetallic particles were applied as electrocatalysts in the electrohydrogenation of p-nitrophenol (p-NPh). An additional electrochemical reduction of copper cations during the hydrogen saturation of Cu-containing particles was established. Some of the prepared particles exhibited high catalytic activity with an increase in the hydrogenation rate of p-NPh by more than 3 times compared to its electrochemical reduction on the non-activated cathode, and p-NPh conversion yielded the maximum values. The main product of p-NPh electrocatalytic hydrogenation over Ni-Cu particles is p-aminophenol, which is an intermediate in the synthesis of many drugs. p-Aminophenol formation is confirmed by UV-Vis spectra.
Keywords
Bimetallic micro- and nanoparticles; chemical successive reduction; electrocatalysts; electrocatalytic hydrogenation; p-aminophenol
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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