Studies on the possibility of using expired ceftriaxone drug as additive in acid electroplating baths

In this paper, preliminary data obtained using ceftriaxone (CEFTR) as additive in copper and nickel electrodeposition from acid baths are presented. Electrochemical behaviour of ceftriaxone and introductory information about the way its presence in the metalselectrodeposition bath influences the electrode processes have been obtained by cyclic voltammetry on platinum electrode. Inhibitory effect of ceftriaxone in the electrolyte solutions used in copper and nickel deposition processes was studied by linear voltammetry

Recycling of expired drugs as additive in a Watts Nickel electroplating bath

Iact In this paper are presented studies on the leveling effect of midazolam {8 - chloro - 6 - (2 - fluorophenyl) - 1 - methyl - 4H - imidazo[1,5-a][1,4]benzodiazepine}, and streptomycin {5 - (2,4 - diguanidino - 3,5,6 - trihydroxy- cyclohexoxy)- 4 -[4,5- dihydroxy - 6 - (hydroxymethyl) - 3 - methylamino- tetrahydropyran - 2 - yl]oxy - 3 - hydroxy - 2 - methyl- tetrahydrofuran - 3 - carbaldehyd}, in a Watts nickel electroplating bath, manifested by the increase of cathode polarization. These drugs were chosen because their pharmaceutical formulation of the commercial product contains only pure compound, without excipients

Skeletal nickel electrode with catalytic effect for ethanol electrooxidation in alkaline media

The aim of this investigation is to examine ethanol anodic oxidation on a skeletal nickel electrode in aqueous alkaline solution (1 mol L-1 NaOH). Electrocatalytic activity for ethanol anodic oxidation becomes a serious issue, especially due to the utilization of skeletal nickel electrodes in fuel cells. In order to understand the oxidation mechanism on the surface of these types of electrodes, comprehensive researches were necessary. Electrochemical behavior has been studied by cyclic and linear voltammetry

Skeletal nickel based 6 layers platinum nanoparticles electrode with catalytic effect for ethanol electrooxidation in alkaline media

In this paper, preliminary aspects of ethanol electrocatalytic oxidation on skeletal nickel based 6 layers platinum nanoparticles electrode in aqueous alkaline solution have been investigated using voltammetric studies. Ethanol oxidation reaction (EOR) was studied by cyclic and linear voltammetry

Comparative studies for 2-propanol electrooxidation on platinum and nickel electrodes in alkaline media

In this paper, new aspects of 2-propanol oxidation electrocatalytic effect on platinum and nickel electrodes, in aqueous alkaline solution was investigated using voltammetric studies. 2- propanol oxidation reaction has been studied by cyclic and linear voltammetry

Y0.5Ca0.5BaCo4O7 perovskite electrodes with catalytic effect for methanol and ethanol electrooxidation in alkaline media

In this paper, preliminary data of methanol and ethanol anodic oxidation on Y0.5Ca0.5BaCo4O7 perovskite electrode in aqueous alkaline solution (1 M KOH) are presented. Electrocatalytic activity of methanol and ethanol anodic oxidation becomes a serious issue, especially due to the utilization of 114 layered cobalt perovskite electrodes in fuel cells. In order to elucidate the mechanism of methanol (MOR) and ethanol oxidation reactions (EOR) which occur at this perovskite electrodes interface, advanced studies are required. Electrochemical behavior has been studied by cyclic voltammetry, chronoamperometry and chronopotentiometry. Obtained results have shown that Y0.5Ca0.5BaCo4O7 perovskite electrodes are suitable as anodes in fuel cells

Resveratrol as corrosion inhibitor for metals in wine and food industries

This paper presents preliminary results obtained in the case of Resveratrol used as corrosion inhibitor for stainless steel, carbon steel, polished and brushed aluminum in ethanol solutions. Electrochemical behavior of Resveratrol in ethanol solutions has been studied by cyclic voltammetry on platinum electrode. Information about the inhibitory effect mechanism was provided by kinetic parameters calculated with Tafel method from linear polarization curves. Corrosion rate diminution of studied electrodes in the presence of Resveratrol can be assigned to the adsorption of inhibitor molecules on the sample surface, or depositing corrosion products onto metal surface, blocking the active sites

Recycling of Expired Ceftamil Drug as Additive in the Copper and Nickel Electrodeposition from Acid Baths

Due to the large quantity of expired and unused drugs worldwide, pharmaceutical disposal has become a serious problem that requires increased attention. In the present paper, the study on recycling ceftazidime (CZ) as an additive in copper and nickel electrodeposition from acid baths is highlighted. CZ is the active substance from expired commercial drug Ceftamil®. Its electrochemical behavior was studied by cyclic voltammetry. As well, kinetic parameters for copper and nickel electrodeposition were determined using Tafel plots method at different temperatures and CZ concentrations in these acid baths. The activation energy was calculated from Arrhenius plots. Electrochemical impedance spectroscopy was used to investigate the charge transfer resistance and coverage degree in the electrolyte solutions at several potential values. Gibbs free energy values, calculated from Langmuir adsorption isotherms, revealed the chemical nature of CZ–electrode surface interactions. The favorable effect of the organic molecules added in copper and nickel electroplating baths was emphasized by optical microscope images. The morphology of the obtained deposits without and with 10−4 mol L−1 CZ was compared. The experimental results revealed that expired Ceftamil® is suitable as additive in copper and nickel electroplating processes from acid baths

Reuse of Expired Cefort Drug in Nickel Electrodeposition From Watts Bath

This paper demonstrates the possibility to use ceftriaxone (CEFTR) active compound from expired Cefort as additive in nickel electrodeposition from Watts baths. Electrochemical behaviour and the influence of CEFTR on nickel electroplating were studied by electrochemical methods. Experimental data recommends CEFTR as additive in nickel electroplating from Watts baths

Recycling Unused Midazolam Drug as Efficient Corrosion Inhibitor for Copper in Nitric Acid Solution

The current work explores the potential for recycling unused or expired Midazolam (MID) drug, a benzodiazepine derivative, as an efficient corrosion inhibitor for copper in nitric acid solution. The technical advantage of recycling expired MID drug relates to the avoidance of organic inhibitor production costs and the reduction of disposal costs of the expired medication. A combination of electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy), weight loss, and quantum chemical calculation were used to assess the inhibition mechanism and efficiency of MID. It was found that inhibition efficiency increases with inhibitor concentration, reaching a highest value of 92.9% for a concentration of 10−4 M MID. MID was classified as a mixed-type inhibitor, showing a preferential cathodic suppression mechanism. The obtained values of −45.89 kJ mol−1 for the standard free energy of adsorption indicate that the inhibition mechanism is based on chemisorption of MID molecules on the copper surface, which obeys the Langmuir isotherm. Surface analysis using scanning electronic microscopy revealed that MID offers high protection against corrosion during both immersion and polarization tests. Molecular modelling and quantum chemical calculations indicated chemical interactions between MID molecules and the copper surface, as well as electrostatic interactions. The results obtained using the different techniques were in good agreement and highlight the effectiveness of MID in the corrosion inhibition of copper