Electrochemical and theoretical quantum approaches on the inhibition of C1018 carbon steel corrosion in acidic medium containing chloride using some newly synthesized phenolic Schiff bases compounds

El‐Lateef, Hany M. Abd; Abu‐Dief, Ahmed M.; Abdel‐Rahman, Laila H.; Sañudo, E. Carolina; Aliaga‐Alcalde, Núria

doi:10.1016/j.jelechem.2015.02.023

Cited by 111 publications

(58 citation statements)

References 68 publications

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“…The thickness of this protective layer increases with the increase in inhibitor concentration, since more inhibitor will electrostatically adsorb on the electrode surface. This trend is in accordance with Helmholtz model, given by the following equation [10,18]:…”

Section: Impedance Spectroscopysupporting

confidence: 89%

“…Langmuir's isotherm assumes that the adsorption of organic molecule on the adsorbent is monolayer and the adsorbed molecules occupy only one site and there are no interactions with other adsorbed species. The standard free energy of adsorption of inhibitor (∆G ads ) on steel surface can be evaluated with the following equation: (6) The value 55.5 in the above equation is the concentration of water in solution in mol.l -1 [10]. The negative values of ∆G ads suggest that the adsorption of DHBP on the steel surface is spontaneous.…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…The choice of the inhibitor is based on two considerations, firstly economic consideration and secondly, high inhibition efficiency. Both features obviously can be combined within the same molecule such as Schiff bases [8][9][10]. In the past few years, the corrosion inhibition of various metals such as aluminum, and steel in acid solutions by Schiff bases with envi-ronmental considerations has attracted more attention [11].…”

Section: Introductionmentioning

confidence: 99%

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Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Danaee

Bahramipanah

Moradi

et al. 2016

Journal of Electrochemical Science and Technology

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The inhibition ability of N,N-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine (DHBP) as a schiff base against the corrosion of API-5L-X65 steel in 1 M HCl solution was evaluated by electrochemical impedance spectroscopy, potentiodynamic polarization and scanning electron microscopy. Electrochemical impedance studies indicated that DHBP inhibited corrosion by blocking the active corrosion sites. The inhibition efficiency increased with increasing inhibitor concentrations. EIS data was analysed to equivalent circuit model and showed that the charge transfer resistance of steel increased with increasing inhibitor concentration whilst the double layer capacitance decreased. The adsorption of this compound obeyed the Langmuir adsorption isotherm. Gibbs free energy of adsorption was calculated and indicated that adsorption occurred through physical and spontaneous process. The corrosion inhibition mechanism was studied by potential of zero charge. Polarization studies indicated that DHBP retards both the cathodic and anodic reactions through adsorption on steel surface. Scanning electron microscopy was used to study the steel surface with and without inhibitor.

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Section: Impedance Spectroscopysupporting

confidence: 89%

Section: Adsorption Isothermmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Danaee

Bahramipanah

Moradi

et al. 2016

Journal of Electrochemical Science and Technology

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“…The addition of PLS at 1 vol.% shifted the cathodic current density to the passive direction and the corrosion potential (E corr ) to a more negative value. This is likely due to the adsorption of organic molecules on the cathodic active sites of steel surface (54,55). By increasing the PLS concentration to 2 vol.%, the cathodic and anodic current densities further decreased, with more pronounced shift seen on the cathodic side.…”

Section: Pdp Resultsmentioning

confidence: 98%

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

Nazari

Shihab

Cao

et al. 2017

Green Chemistry Letters and Reviews

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A liquid mixture was developed from waste peony leaves through a zero-waste chemical/biological process. The inhibition effect of different concentrations of peony leaves derived solution (0-3 vol.%, PLS0-3) on C1010 carbon steel in 3.5 wt.% NaCl was investigated over time using electrochemical measurements. Chemical analyses were performed to reveal the main compounds of this inhibitor. Surface analyses together with water contact angle measurements were employed to study the characteristics of the steel surface affected. Semi-empirical calculations with PM3 method were used to find the relationship between molecular structure and inhibiting effect of PLS. The inhibitor was stable over time and its main active ingredients were C 19 H 27 N 4 O 10 P and C 17 H 16 N 3 O 9 P that adsorb onto the steel surface, block cathodic active sites, make the surface hydrophobic, decrease the surface free energy, and facilitate the formation of a passive layer. A good correlation was found between experimentally determined inhibition efficiency and theoretically calculated properties of PLS.ARTICLE HISTORY

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“…The choice of the inhibitor is based on two considerations, fi rstly, economic consideration and, secondly, high inhibition effi ciency. Both features obviously can be combined within the same molecule such as Schiff bases [12][13][14][15]. In the past few years, the corrosion inhibition of various metals such as aluminum, and of steel in acid solutions by Schiff bases with environmental considerations has attracted more attention [16,17].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and adsorption behavior of N2O4 schiff base as a corrosion inhibitor for API-5L-X65 steel in HCl solution

Danaee

Bahramipanah

2016

Russ J Appl Chem

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The inhibition ability of N,N '-bis(2,4-dihydroxyacetophenone)-1,3-propandiimine (DHAPP) as a schiff base against the corrosion of API-5L-X65 in 1 M HCl solution was evaluated by polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. Polarization studies indicated that DHAPP retards both the cathodic and anodic reactions through chemical adsorption and blocking the active corrosion sites. The adsorption of this compound obeyed the Langmuir adsorption isotherm. The inhibition effi ciency increased with inhibitor concentration and decreased with increasing temperature. EIS data analysed to equivalent circuit model showed that as the inhibitor concentration increased the charge transfer resistance of steel increased whilst double layer capacitance decreased. Kinetic and thermodynamic parameters such as activation energy, enthalpy, entropy, and Gibbs free energy of activation and adsorption were calculated. Gibbs free energy indicated that adsorption occurred through physical and spontaneous process. Scanning electron microscopy was used to study the steel surface with and without inhibitor.The inhibition ability of N,N '-bis(2,4-dihydroxyacetophenone)-1,3-propandiimine (DHAPP) as a schiff base against the corrosion of API-5L-X65 in 1 M HCl solution was evaluated by polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. Polarization studies indicated that DHAPP retards both the cathodic and anodic reactions through chemical adsorption and blocking the active corrosion sites. The adsorption of this compound obeyed the Langmuir adsorption isotherm. The inhibition effi ciency increased with inhibitor concentration and decreased with increasing temperature. EIS data analysed to equivalent circuit model showed that as the inhibitor concentration increased the charge transfer resistance of steel increased whilst double layer capacitance decreased. Kinetic and thermodynamic parameters such as activation energy, enthalpy, entropy, and Gibbs free energy of activation and adsorption were calculated. Gibbs free energy indicated that adsorption occurred through physical and spontaneous process. Scanning electron microscopy was used to study the steel surface with and without inhibitor.

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Electrochemical and theoretical quantum approaches on the inhibition of C1018 carbon steel corrosion in acidic medium containing chloride using some newly synthesized phenolic Schiff bases compounds

Cited by 111 publications

References 68 publications

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

Thermodynamic and adsorption behavior of N2O4 schiff base as a corrosion inhibitor for API-5L-X65 steel in HCl solution

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