2025/01/01 by Islam Kholidy, Mohammad H. BinSabt, H. M. Abd El‐Salam +2 · 1 voice · 1 citation
Energy · Materials Science · #Copper-based nanomaterials and applications #Electrocatalysts for Energy Conversion #Nanoporous metals and alloys
paper · pdf · doi:10.1515/gps-2024-0137
openalex publication_date 2025/01/01 · openalex created_date 2025/02/15 · openalex updated_date 2026/08/01
Abstract The electrochemical synthesis of copper, iron, and their alloys on brass foil plates, using varying concentrations of CuCl 2 and FeCl 3 solutions, was conducted. Characterization techniques including X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscope, and cyclic voltammetry were employed to analyze the structures, morphologies, and electrochemical activities of the deposits. Upon combustion, an alloy oxide with a chemical composition of (30Cu–2.5Fe–35Zn–32.5O), comprising major phases of CuFeO 2 and CuFe 2 O 4 , along with minor materials, such as Cu–Fe, CuO, ZnO, and Fe 2 O 3 , was prepared. Prior to combustion, two distinct alloys, denoted Alloy( i ) and Alloy( ii ), with varying compositions and phases, were deposited. Alloy( i ), deposited from a solution of higher CuCl 2 and lower FeCl 3 concentrations, exhibited a composition of 80Cu–2Fe–16Zn–2O, while Alloy( ii ), deposited from a solution with higher FeCl 3 concentration, had a composition of 60Cu–0.25Fe–36.75Cu–3O. The alloys’ purity was confirmed using energy-dispersive X-ray techniques, with surface morphology varying based on the concentration of FeCl 3 . Alloy( i ) showed a high rate of hydrogen production in alkaline solution, with a current density of 708 mA·cm −2 at a potential of 2.04 V. Additionally, the alloy oxide, utilized as a photoelectrode material, demonstrated current densities of 2.54 mA·cm −2 in the dark and 33 mA·cm −2 under light conditions when tested under a solar simulator with an intensity of 400 mW·cm −2 .