Evaluation of Cefuroxime Axetil Drug as Acid Corrosion Inhibitor for Zinc using Polarization and Weight Loss Technique (original) (raw)
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Inhibitive Effect of Cefuroxime on the Corrosion of Mild Steel in Hydrochloric Acid Solution
Int. J. Electrochem. Sci, 2011
The corrosion inhibition properties of cefuroxime (CFM) for mild steel corrosion in HCl solution was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. Mixed mode of adsorption (physisorption and chemisorption) is proposed for the inhibition and the process followed the Langmuir adsorption isotherm. The mechanism of adsorption inhibition and type of adsorption isotherm were proposed from the trend of inhibition efficiency with temperature, E a and ο ads G
Inhibitive effect of ceftazidime on corrosion of mild steel in hydrochloric acid solution
Materials Chemistry and Physics, 2011
The corrosion inhibition properties of ceftadizime (CZD) for mild steel corrosion in HCl solution were analysed by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. These results were supplemented by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Mixed mode of adsorption (physisorption and chemisorption) is proposed for the inhibition and the process followed the Langmuir adsorption isotherm and kinetic/thermodynamic model of El-Awady et al. The mechanism of adsorption inhibition and type of adsorption isotherm were proposed from the trend of inhibition efficiency with temperature, Ea and ΔGads°ΔGads°. Potentiodynamic polarization study clearly revealed that CZD acted as mixed type inhibitor. The experimental data showed a frequency distribution and therefore a modelling element with frequency dispersion behaviour and a constant phase element (CPE) have been used.► The adsorption of CZD followed Langmuir adsorption isotherm and kinetic/thermodynamic model of El-Awady et al. ► Constant phase elements describing the non-ideal characteristics of the electrochemical interface are introduced to explain the impedance data. ► Potentiodynamic polarization study revealed that CZD acted as mixed type inhibitor.
CORROSION INHIBITION OF PURE ZINC IN 2.5 M HF ACID SOLUTION BY USING ORGANIC AND INORGANIC SALTS
Corrosion inhibition of pure Zinc in 2.5 M HF acid by using organic and inorganic salts such as Tri-sodium citrate, Potassium hydrogen phthalate, Sodium oxalate, Potassium dihydrogen ortho phosphate and Potassium dichromate was investigated using open circuit measurements, potentiodynamic polarization and surface examination via scanning electron microscope (SEM) techniques. The percentage of inhibition efficiency was found to increase with increasing the concentration of Tri-sodium citrate, Potassium dihydrogen ortho phosphate and Potassium dichromate but decrease with increasing the concentration of the other salts, such as Potassium hydrogen phthalate and Sodium oxalate salts. Results revealed clearly that, open circuit measurements and potentiodynamic polarization are in agreement.. Analyses of the surface by scanning electron microscope (SEM) technique confirm these results.
Inhibition Effect of an Anti-HIV Drug on the Corrosion of Zinc in Acidic Medium
Transactions of the Indian Institute of Metals, 2014
Corrosion inhibition of zinc in 0.1 M HCl by Tenofovir Disproxil Fumarate(TDF) an anti-HIV drug has been investigated by using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy. The experimental results suggested the inhibition efficiency increases with the increase in inhibitor concentration up to 10 ppm. Polarization results revealed that TDF acts as a mixed type inhibitor. The effect of temperature on the corrosion behavior of zinc in the given temperature range from 303-333 K was studied. Adsorption of the inhibitor followed the Langmuir isotherm. Activation and thermodynamic adsorption parameters were calculated and discussed.
SYNERGISTIC INHIBITION OF ZINC CORROSION BY SOME ANIONS IN AQUEOUS MEDIA
The corrosion inhibition of zinc in 0.1M HCl in presence and absence of some hydrazide derivatives has been investigated using mass-loss and polarization techniques. Results obtained showed that the inhibition efficiency increased with the increase of the concentration of the additives and decreased with the increase of temperature. Synergism between I -, SCNand Branions and hydrazide derivatives was proposed. The polarization curves showed that hydrazide derivatives act as mixed-type inhibitors, acting predominantly as cathodic inhibitors for zinc in 0.1M HCl .The adsorption of these hydrazide derivatives on zinc surface follows Temkin's adsorption isotherm. Some thermodynamic parameters were calculated. The kinetic parameters of corrosion of zinc in HCl solution have been studied.
International Journal of Industrial Chemistry, 2019
Inhibition action of seroquel on corrosion of zinc in 0.1 M HCl solution was investigated using weight loss, electrochemical potentiodynamic polarization and impedance spectroscopic techniques. Corrosion inhibition efficiency showed the positive effect with increase in concentration of inhibitor and with the increase in temperature. Results obtained from all the methods are in good agreement with each other. Inhibition effect of inhibitor is due to the adsorption of seroquel molecule on zinc surface from bulk of the solution and the process of adsorption follows Temkin's adsorption isotherm. Potentiodynamic polarization studies revealed that seroquel acts as a mixed type of inhibitor. Corrosion inhibition mechanism is explained by activation and thermodynamic parameters. Surface morphology of the corroded metal was studied by scanning electron microscopic studies and FT-IR spectrum of the corrosion product further confirms the process of adsorption of seroquel on metal surface.
Journal of Applied Electrochemistry, 2011
The inhibition effect of ceftobiprole against the corrosion of mild steel in 1 M HCl solution was studied by weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and atomic force microscopy techniques. Inhibition efficiency increased with inhibitor concentration where as decreased with acid concentration. Data obtained from EIS studies were analyzed to model the corrosion inhibition process through appropriate equivalent circuit models. The adsorption of ceftobiprole obeyed Langmuir adsorption isotherm. Both thermodynamic and activation parameters were calculated and discussed. Polarization curves indicated that they are mixed type of inhibitors. Polarization curves showed that ceftobiprole act as mixed-type inhibitor. The results obtained from weight loss, EIS and Potentiodynamic polarization are in good agreement.
Diphenyl Sulphide as Corrosion Inhibitor for Zinc Metal in Acid Solutions
This work deals with the evaluation of diphenyl sulphide as a corrosion inhibitor for zinc in 0.5N HCl and 0.5N H2SO4 by conventional weight loss and gasometric methods. Results indicate that diphenyl sulphide exhibited high inhibition efficiencies in both the acids but performed better in 0.5N H2SO4 than in 05N HCl. The inhibition efficiency was found to increase with increase in the inhibitor concentration. The adsorption of the inhibitor molecules on the zinc metal surface obeyed Temkin adsorption isotherm.
Triethylenetetramine as a Corrosion Inhibitor for Zinc Metal in Acidic Solutions
The inhibitive action of Triethylenetetramine on zinc metal was evaluated in 0.5N HCl as corrosion medium ,using weight loss, gasometric and thermometric techniques. Parameters such as inhibition efficiency and corrosion rates were evaluated to assess the performance of the inhibitor. The results showed that the inhibitor displayed good corrosion inhibiting properties. The inhibition efficiency was found to increase with increase in the inhibitor concentration. To study the adsorption of the inhibitor on the metal surface, adsorption isotherm was plotted.
Corrosion Behaviour of Mild Steel in Sulphuric Acid Solution in Presence of Ceftazidime
The corrosion inhibition properties of ceftadizime (CZD) for mild steel corrosion in H 2 SO 4 solution were analysed by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. Mixed mode of adsorption (Physisorption and chemisorption) is proposed for the inhibition and the process followed the Langmuir adsorption isotherm. The mechanism of adsorption inhibition and type of adsorption isotherm were proposed from the trend of inhibition efficiency with temperature, a E and ο ads G . Potentiodynamic polarization study clearly revealed that CZD acted as mixed type inhibitor. The experimental data showed a frequency distribution and therefore a modelling element with frequency dispersion behaviour and a constant phase element (CPE) have been used.