Electrochemical and DFT studies of a new synthesized Schiff base as corrosion inhibitor in 1MHCl

Benabid, Sonia; Douadi, Tahar; Issaadi, Saïfi; Penverne, Christophe; Chafaa, Salah

doi:10.1016/j.measurement.2016.12.022

Cited by 69 publications

(16 citation statements)

References 76 publications

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“…Calculated free energy values (which were recorded in Table 5) are negative and are within the range of values that support the mechanism of physical adsorption which involves charge transfer from charged inhibitor to charged metal surface [24]. G 0 ads values up to −20 kJ/mol or less are consistent with physisorption mechanism, while G 0 ads up to −40 kJ/mol and more are consistent with chemisorption mechanism [25].…”

Section: Thermodynamic/adsorption Studymentioning

confidence: 59%

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Eddy

Ameh

Essien

2018

Journal of Taibah University for Science

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The effectiveness of 3-nitrobenzoic acid towards the inhibition of the corrosion of mild steel and aluminium in solution of HCl was investigated using theoretical and experimental methods (weight loss, thermometric, polarization, FTIR and SEM techniques). Inhibition efficiency of 3-nitrobenzoic acid, evaluated from weight loss technique ranged from 71% to 90% and from 71% to 82% for mild steel and aluminium, respectively. Results from linear polarization and potentiodynamic studies were comparable to weight loss results. Calculated kinetic (activation energy), thermodynamic (changes in entropy and enthalpy) and adsorption parameters indicated that the adsorption of the inhibitor on the surface of the respective metal is accompanied by molecular association and is endothermic, spontaneous and favoured the mechanism of physical adsorption. Best-fitted adsorption isotherms were Langmuir and Frumkin models, which gave evidences for the existence of interaction, characterized by attractive behaviour of the inhibitor on both mild steel and aluminium surfaces. Scanning electron micrographs of the metal before and after inhibition clearly revealed that the inhibitor prevented crevice and pitting corrosion by forming adsorbed protective layer on the respective metal surface. FTIR spectra of the inhibitor and the corrosion products indicated the formation of new bond, existence of interaction between the inhibitor molecules and the involvement of some functional groups in the adsorption and inhibition processes. Quantum chemical study revealed that the inhibitor is adsorbed on the metal surface through the nitro functional group in the ring. Calculated semi empirical parameters were comparable to those reported for excellent corrosion inhibitors.

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Section: Thermodynamic/adsorption Studymentioning

confidence: 59%

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Eddy

Ameh

Essien

2018

Journal of Taibah University for Science

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“…Among the various hetero-atom containing compounds, Schiff bases are quite effective because of the presence of a nitrogen atom, and several such compounds have been reported in the literature as potential corrosion inhibitors for metals and alloys in an acidic medium. [9][10][11][12][13] The growing popularity of Schiff bases as corrosion inhibitors is primarily based on their low toxicity and convenience of synthesis from very inexpensive starting materials. 14,15 Schiff bases are 1,16-21 wellknown for their potential for corrosion inhibition, and plentiful research on organic inhibitors has shown that Schiff bases have much greater inhibition efficiencies compared to the analogous aldehydes and amines.…”

Section: Introductionmentioning

confidence: 99%

Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

et al. 2020

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“…The protection of industrial materials from corrosion process is of paramount importance, not only maximizing the durability of the appliances but also diminishing the toxic metals solubility from the industrial materials into the environment [1]. The demand for increasing the longevity of alloy metals is increasing drastically, due to its wide applications in various fields and in engineering advancements [2].…”

Section: Introductionmentioning

confidence: 99%

“…Their advantages include multiple adsorption sites, presence of π electrons and moreover stronger adsorption and greater coverage on the metallic surface. It is interesting to note the possibility of interaction between π electrons of the double bond and d-orbitals of the metal which provides a physical insight into the actual reactivity of additives in impeding the corrosion process [1]. Density functional theory (DFT) has become an active field of research, to envisage the mechanism arising between organic additives and surface of the metal at the molecular level [19, 20, 21].…”

Section: Introductionmentioning

confidence: 99%

Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde

Kumar

Shanmugan

Kennady

et al. 2019

Heliyon

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In the present work impact of 3,4-Dihydroxybenzaldehyde on the microstructural and corrosion behavior of nanocrystalline Ni-W alloy coatings has been elucidated. A systematic investigation on the protection ability of Ni-W alloy coatings in 0.2 M H 2 SO 4 solution was done with the aid of tafel polarization curves and electrochemical impedance spectroscopy (EIS) studies. Corrosion performance of the alloy films obtained in the absence and in the presence of different concentrations of 3,4-Dihydroxybenzaldehyde (0–500 ppm) in the bath was explained in the light of additive concentration. Compared to the blank and other concentrations of additive, 250 ppm of additive containing bath was predicted as the most promising one for the introduced citrate based Ni-W alloy electrodeposition. Low corrosion rate (0.06 mm/year) and high charge transfer resistance (2505.3 Ω cm 2 ), for the electrodeposits, obtained from the bath containing 250 ppm of 3,4-Dihydroxybenzaldehyde supports for its high anticorrosion performance. The marked difference in the corrosion resistance property is ascribed to the formation of fine-grained deposits, smooth surface, and inclusion or adsorption of additive within the deposits in the presence of the additive (250 ppm) in the bath. Further, the adsorption of additive molecules on the metal surface was explored with the help of quantum chemical calculations based on DFT.

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Electrochemical and DFT studies of a new synthesized Schiff base as corrosion inhibitor in 1MHCl

Cited by 69 publications

References 76 publications

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde

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