Preparation and Electrocatalytic Activity of Bimetallic Ni-Cu Micro- and Nanoparticles
Ivanova N.M. Muldakhmetov Z.M. Soboleva Y.A. Vissurkhanova Y.A. Beisenbekova M.E.
August 2023Multidisciplinary Digital Publishing Institute (MDPI)
Catalysts
2023#13Issue 8
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 prepared 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. The prepared Ni/Cu particles exhibited the highest electrocatalytic activity with an increase in the hydrogenation rate of p-NPh by more than three times compared to its electrochemical reduction on the nonactivated 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.
bimetallic micro- and nanoparticles , chemical successive reduction , electrocatalysts , electrocatalytic hydrogenation , p-aminophenol
Text of the article Перейти на текст статьи
Institute of Organic Synthesis and Chemistry of Coal of Kazakhstan Republic, Alikhanov Str., 1, Karaganda, 100000, Kazakhstan
Institute of Organic Synthesis and Chemistry of Coal of Kazakhstan Republic
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026