Thermodynamic and electrochemical investigation of inhibition efficiency of green corrosion inhibitor and its comparison with synthetic dyes on MS in acidic medium

Vashishth, Priya; Bairagi, Himanshi; Narang, Rajni; Shukla, Sudhish Kumar; Mangla, Bindu

doi:10.1016/j.molliq.2022.120042

Cited by 38 publications

(10 citation statements)

References 31 publications

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“…The reactivity criteria of molecules of pistiphloroglucinyl, pistaciaphenyl ether, and naringenin organic compounds were evaluated by utilizing the energy difference (Δ E Inh DFT ) between the HOMO ( E HOMO(Inh) DFT ) and LUMO ( E LUMO(Inh) DFT ) according to eqs –. − Table presents the outcomes that were obtained.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium

Kaur,

Almujibah,

Alam

et al. 2024

ACS Omega

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A novel application of the Pistacia integerrima gall extract as an environmentally friendly corrosion inhibitor is reported in this study. The major phytochemicals present in the gall extract, namely pistagremic acid, β-sitosterol, pistiphloroglucinyl ether, pistaciaphenyl ester, naringenin, and 5,7-dihydroxy-2-(4hydroxyphenyl)-2,3-dihydrochromen-4-one, play key roles in its anticorrosive behavior on steel in aggressive media. Several approaches were used to study the corrosion prevention activity of steel in 1 M H 2 SO 4 , including weight loss analysis, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and density functional theory (DFT). At 2000 mg L −1 , the highest efficiency of 92.19% was observed in 1 M H 2 SO 4 . An SEM study was conducted to validate the surface coverage of the metal surface. DFT studies revealed several nucleophilic regions present in the phytochemicals of the inhibitor, which supported the favorable nucleophilicity. Corrosion studies have not been performed on this sample. Phytochemicals make it an effective corrosion inhibitor, and its extraction process utilizes distilled water, making it better than other inhibitors. It has been proven that the obtained values of ΔE Inh DFT for pistiphloroglucinyl, pistaciaphenyl ether, and naringenin organic compounds were very low, confirming the high reactivity of these corrosion inhibitors. The order of the values of ΔE Inh DFT is as follows: pistaciaphenyl ether > pistiphloroglucinyl ether > naringenin organic compound; this suggests that pistaciaphenyl ether is more reactive than the other compounds. In this study, P. integerrima gall extract emerges as a novel and highly effective corrosion resistance agent in 1 M H 2 SO 4 , chosen for its relevance to acid pickling and cleaning processes.

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Section: Resultsmentioning

confidence: 99%

Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium

Kaur,

Almujibah,

Alam

et al. 2024

ACS Omega

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“…The high values of the K ads as represented in Table accomplish the extraordinary adsorption capability of Schiff base inhibitors on the surface of carbon steel. Standard Gibbs free energy (Δ G ads o ) of adsorption was calculated with the assistance of K ads utilizing the following equation K normala normald normals = 1 10 6 exp ( − Δ G a d s o RT ) where R is the universal gas constant (8.314 J/mol K), value 10 6 is the water concentration (in mg/L) in the medium and T is the temperature (in Kelvin). Generally, the values Δ G ads o of the adsorption equal −20 kJ/mg or lesser negatively is constant with the electrostatic interaction (physisorption), whereas the value become (Δ G ads o ) equal −40 kJ/mg or extra negatively is regular with charge-sharing interaction (chemisorption) …”

Section: Resultsmentioning

confidence: 99%

“…The high values of the K ads as represented in Table 1 accomplish the extraordinary adsorption capability of Schiff base inhibitors on the surface of carbon steel. Standard Gibbs free energy (ΔG ads o ) of adsorption was calculated with the assistance of K ads utilizing the following equation 39 = i k j j j j y…”

Section: Adsorption Isotherm Studymentioning

confidence: 99%

Anticorrosion Investigation of New Diazene-Based Schiff Base Derivatives as Safe Corrosion Inhibitors for API X65 Steel Pipelines in Acidic Oilfield Formation Water: Synthesis, Experimental, and Computational Studies

A Altalhi

2023

ACS Omega

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The current study examines the evaluation of diazene-based Schiff base derivatives, namely, 4-((E)-(3-((E)-(hexylimino)methyl)-4-hydroxyphenyl)diazenyl)benzonitrile (S1) and 4-((E)-(3-((E)-(dodecylimino) methyl)-4-hydroxyphenyl)diazenyl)benzonitrile (S2). The structure elucidation of prepared the Schiff base compounds was performed by FTIR, 1 H NMR, and 13C NMR. In addition, the corrosion inhibition capacity of these compounds was investigated for API X65 steel pipelines in 1 M HCl utilizing gravimetric and electrochemical methods. By conducting the experimental investigations at various doses, it was possible to assess the inhibition effectiveness and adsorption behavior of S1 and S2. With increasing concentration, both inhibitors became more effective at inhibiting corrosion. S1 and S2 suppressed both cathodic and anodic processes, as shown by the potentiodynamic polarization study. The charge transfer resistance (R ct ) increased when S1 and S2 concentrations increased, according to the electrochemical impedance analysis (EIS) data. According to the Langmuir isotherm model, the adsorption of S1 and S2 inhibitors on carbon steel was discovered based on gravimetric measurements. The results were confirmed by theoretical data in addition to the experimental tests for the presence of S1 and S2 inhibitor films over the API X65 carbon steel surface.

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“…6 is that chemisorption is stronger adsorption compared to physisorption, in which its interaction are double orders in magnitude [52]. The value of ΔH ads is associated with the lower inhibition efficiency of the inhibitor as more energy is required to complete the accomplishment of the reaction [53]. At the same time, regular ΔS ads shows that the solidification at a higher temperature runs slower than that at a lower temperature.…”

Section: Discussion Of Syzygium Cumini As a Green Corrosion Inhibitormentioning

confidence: 99%

Effect of syzygium cumini leaf extract as a green corrosion inhibitor on API 5l carbon steel in 1M HCL

Riastuti

Mashanafie

Rizkia

et al. 2022

EEJET

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Corrosion in API 5L steel under 1M HCl is a common issue; hence, creating a more effective and naturally-based inhibitor is critical. In this research, Syzygium Cumini leaf extract (SCLE) was used as a new green corrosion inhibitor under acidic conditions. The inhibition properties of the novel cumini extract were thoroughly characterized using potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), Fourier-transform infrared spectroscopy (FTIR), and atomic force microscope (AFM). The results show that the cumini inhibitor has excellent corrosion inhibition with 93 % inhibition efficiency. The adsorption behavior of the inhibitor follows the Langmuir Adsorption Isotherm due to the nearness of R2 to unity. The potentiodynamic and electrochemical measurements demonstrate the mixed type of corrosion inhibitor. Thermodynamic calculation of ΔGads is – 18.41 kJ mol-1 showing the physical adsorption process between the inhibitor and metals. Further inspection of ΔHads at ‒58.93 kJ mol-1 considers releasing energy during adsorption. The FTIR results agree with the increased growth of passive layers due to the adsorption of polyphenol and flavonoids on metals. Remarkably, the adsorption peak at 3266.59 cm-1 corresponds to the adsorption of –OH. The peak at 1612.56 and 1698.4 cm-1 is attributed to C=C and C=O functional groups. The above functional groups serve as adsorption centers to reduce the corrosion effect. The surface treatment of AFM indicated a good relationship with the functional group characterization and confirmed the significant corrosion rate reduction. This work can be used as a benchmark to develop a natural plant as a corrosion inhibitor.

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Thermodynamic and electrochemical investigation of inhibition efficiency of green corrosion inhibitor and its comparison with synthetic dyes on MS in acidic medium

Cited by 38 publications

References 31 publications

Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium

Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium

Anticorrosion Investigation of New Diazene-Based Schiff Base Derivatives as Safe Corrosion Inhibitors for API X65 Steel Pipelines in Acidic Oilfield Formation Water: Synthesis, Experimental, and Computational Studies

Effect of syzygium cumini leaf extract as a green corrosion inhibitor on API 5l carbon steel in 1M HCL

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