1-(4-Nitrophenylo-imino)-1-(phenylhydrazono)-propan-2-one as corrosion inhibitor for mild steel in 1 M HCl solution: Weight loss, electrochemical, thermodynamic and quantum chemical studies

Hamani, Hanane; Douadi, Tahar; Daoud, Djamel; Al-Noaimi, Mousa; Rikkouh, Rahma Amina; Chafaa, Salah

doi:10.1016/j.jelechem.2017.08.031

Cited by 111 publications

(18 citation statements)

References 90 publications

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“…These observations demonstrate that the corrosion mechanism does not change with the addition of the extract to the acidic solution. The depressed semicircle from ideal appearance is generally explained by inhomogeneities of the electrode surface, impurities and distributions of active sites on the solid surface [35,[29][30][31][32]36]. These observations indicate that the corrosion process of MS in 1 M HCl solution in the absence and presence of PDSE is activation-controlled.…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 93%

Adsorption ability, stability and corrosion inhibition mechanism of phoenix dactylifera extrat on mild steel

Şahin

Solmaz

Geçibesler

et al. 2020

Mater. Res. Express

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Adsorption ability, stability and corrosion inhibition of phoenix dactylifera (date palm) seed extract (PDSE) as a natural corrosion inhibitor were studied on mild steel (MS) in 1 M HCl solution after different exposure times. Linear polarization resistance (LPR), potentiodynamic polarization (PP) and electrochemical impedance spectroscopy (EIS) techniques were utilized to define the inhibiting performance of the extract on the rate of corrosion. The stability of the organic film formed over the metal surface was investigated with the help of chronoamperometry (CA) technique. The MS surface was characterized using scanning electron microscopy (SEM), x-ray diffraction (XRD) and contact angle measurements. Surface charge of the metal after exposing to the solution was determined by measuring the potential of zero charge (PZC) using the EIS technique and an adsorption mechanism was proposed. The results of the electrochemical measurements showed that PDSE reduces sufficiently the rate of MS corrosion. The SEM studies showed that the inhibitor strictly attached to the metal surface and form a protective film over the metal surface. The average inhibition efficiency determined from LPR, EIS and PP techniques was found to be 97.3%, which is quite efficient for the practical applications.

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Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 93%

Adsorption ability, stability and corrosion inhibition mechanism of phoenix dactylifera extrat on mild steel

Şahin

Solmaz

Geçibesler

et al. 2020

Mater. Res. Express

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show abstract

“…Among all the adsorption mechanism descriptions reported in the literature [45][46][47][48], the most common model to describe this process is Langmuir's isotherms (equation 3). The corresponding adjustment for this model was performed, and the adjustment parameters are shown in Table 3.…”

Section: Adsorption Isothermmentioning

confidence: 99%

PREPRINT- Adsorption behavior of new theophylline-triazole based derivatives as effective corrosion inhibitors for steel in acidic medium

Espinoza-Vázquez¹,

Rodríguez-Gómez²,

Martínez-Cruz³

et al. 2019

Preprint

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The design and synthesis of a series of theophylline derivatives containing 1,2,3-triazole moieties is presented. The corrosion inhibition activities of these new triazole-theophylline compounds were evaluated by studying the corrosion of API 5L X52 steel in 1 M HCl media. The results showed that an increase in the concentration of the theophylline-triazole derivatives also increases the charge transference resistance (Rct) value, enhancing inhibition efficiency and decreasing the corrosion process. The electrochemical impedance spectroscopy under static conditions studies revealed that the best inhibition efficiencies (~90%) at 50 ppm are presented by the all- substituted compounds. According to the Langmuir isotherm, the compounds 4 and 5 analyzed exhibit physisorption-chemisorption process, with exception of the hydrogen 3, bromo 6 and iodo 7 substituted compound, which exhibit chemisorption process. The corrosion when submerging a steel bar in 1 M HCl was studied using SEM-EDS. This experiment showed that the corrosion process decreases considerably in the presence of 50 ppm of the organic inhibitors. Finally, theoretical study showed a correlation between EHOMO, hardness (η), electrophilicity (W), atomic charge and the inhibition efficiency in which the iodo 7 substituted compound presents the best inhibitor behavior.

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“…The apparent activation energy values deduced from the slopes of the two straight lines are: 30.50 kJ mol -1 and 40.78 kJ mol -1 in the blank and inhibitive solution respectively. It has been reported [65][66][67] that inhibitors whose inhibition efficiency decreases with increasing temperature have a higher apparent activation energy value than that of the blank solution, due to physical adsorption of inhibitors on the metal surface. In the present study, the increase of the activation energy value in the presence of Phen indicates that the adsorption of Phen molecules occurs primarily through physical interactions.…”

Section: Temperature Effect and Thermodynamic Parametersmentioning

confidence: 99%

Experimental and Theoretical Studies on Corrosion Inhibition Performance of Phenanthroline for Cast Iron in Acid Solution

Idir¹,

Kellou-Kerkouche

2018

J. Electrochem. Sci. Technol

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The corrosion inhibition of cast iron in 1 M HCl by Phenanthroline (Phen) was investigated using potentiodynamic polarization (PDP) curves, electrochemical impedance spectroscopy (EIS), surface analysis and theoretical calculations. It is found that Phen exhibits high inhibition activity towards the corrosive action of HCl and its adsorption obeys the Langmuir adsorption isotherm model. The results showed that inhibition efficiency increases with Phen concentration up to a maximum value of 96% at 1.4 mM, and decreases slightly with the increase in temperature. The free adsorption energy value indicates that Phen adsorbs on cast iron surface in 1 M HCl via a simultaneous physisorption and chemisorption mechanism. Scanning electron microscopy (SEM) micrographs, atomic force microscopy (AFM) and FTIR analysis confirmed the formation of a protective film on cast iron surface, resulting in the improvement of its corrosion resistance in the studied aggressive solution. Quantum chemical calculations at the DFT level were achieved to correlate electronic structure parameters of Phen molecules with their adsorption mode.

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1-(4-Nitrophenylo-imino)-1-(phenylhydrazono)-propan-2-one as corrosion inhibitor for mild steel in 1 M HCl solution: Weight loss, electrochemical, thermodynamic and quantum chemical studies

Cited by 111 publications

References 90 publications

Adsorption ability, stability and corrosion inhibition mechanism of phoenix dactylifera extrat on mild steel

Adsorption ability, stability and corrosion inhibition mechanism of phoenix dactylifera extrat on mild steel

PREPRINT- Adsorption behavior of new theophylline-triazole based derivatives as effective corrosion inhibitors for steel in acidic medium

Experimental and Theoretical Studies on Corrosion Inhibition Performance of Phenanthroline for Cast Iron in Acid Solution

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