The growth of patinas on artistic or archeological copper alloys is a determining stage to reproduce similar surface conditions such as corrosion protection cultural heritage materials. In this work, the kinetic and protective properties products layer quaternary alloy have been characterized using linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), scanning electron m...

Ni-doped Co3O4 catalysts with various Ni concentrations (0.01, and 0.015 M) were synthesized using a simple, cost-effective hydrothermal route. The samples are denoted as Co3O4-1 Co3O4-2. Structural morphological properties of as-prepared characterized by XRD, FTIR, XPS, SEM, HR-TEM techniques. electrochemical characteristics for the urea oxidation (UOR) on catalyst examined cyclic voltammetry ...

Lead–steel layered composite electrode materials have been successfully prepared by the roll bonding method. Scanning electron microscopy and energy dispersion spectroscopy (EDS) were used to analyze microstructures elements distribution at interface. The electrochemical properties of samples studied linear sweep voltammetry (LSV), Tafel curves, a weight loss analysis microstructure showed that...

Catalytic activity towards the oxygen reduction reaction (ORR) in 0.5 M H2SO4 was investigated at sub-monolayers and ultra-thin layers (corresponding to 10, 30 100 monolayers, (MLs)) of Pt electrochemically deposited on (Nb-Ti)2AlC substrate. Electrochemical deposition substrate achieved from solution containing 3 mM K2PtCl4 + NaCl (pH 4) under conditions convective diffusion (RPM = 400) using ...

In this study, the electrocatalytic activity of nickel foam, which is activated by cobalt, molybdenum, and phosphide nanostructures, prepared plasma hydrothermal method for use in release hydrogen oxygen. The morphology crystallographic structure synthesized specimens were examined means scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction. Moreover, electrol...

The Cu 2 O films were synthesized using the electrodeposition technique at room temperature. To investigate phase, electrochemical properties, and photocatalytic activity of films, duration was varied. catalytic methylene blue (MB) photodegradation studied. X-ray diffraction measurement showed that single-phase successfully formed from prepared films. Electrochemical properties analysis under v...

The interactions of an anionic redox-active dye Alizarin Red S (ARS) with novel N-hydroxyethyl-3-alkyloxypyridinium surfactants 1-(2-hydroxyethyl)-3-(tetradecyloxy)pyridinium bromide, [HEC14OPyBr], and 1-(2-hydroxyethyl)-3-(hexadecyloxy)pyridinium bromide, [HEC16OPyBr], were investigated in an aqueous solution for the first time with an attempt to obtain comprehensive knowledge of oppositely ch...

In this work, Cu₂O nanoparticles were deposited on a carbon cloth cathode using a facile electrochemical method. The morphology of the modified cathode, which was characterized by scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) tests, showed that the porosity and specific surface area of the cathode improved with longer deposition times. X-ray photoelectron spectroscopy (XPS...

Since the potential for alloying lithium with silicon is outside the window of stability of common commercial electrolytes, silicon surfaces form an amorphous solid electrolyte interphase (SEI) under applied potential, which hampers silicon's performance as a lithium-ion battery anode. We have investigated the composition, distribution, and ambient stability of the SEI formed on undoped silicon...

In this work, a nitrogen-containing bidentate ligand named 5,5′-(9-octyl-9H-carbazole2,7-diyl)bis(1,10-phenanthroline) (OCBP) was synthesized as a nitrogen precursor for making an oxygen reduction catalyst. The 1,10-phenanthroline unit provides a coordination site for copper ions, and the resulting Cu-Nx unit may be responsible for the catalytic activities of the catalyst. Carbon black was sele...