A comprehensive study about anti-corrosion behaviour of pyrazine carbohydrazide: Gravimetric, electrochemical, surface and theoretical study

Chugh, Bhawna; Singh, Ashish Kumar; Chaouiki, Abdelkarim; Salghi, R.; Thakur, Sanjeeve; Pani, Balaram

doi:10.1016/j.molliq.2019.112160

Cited by 67 publications

(27 citation statements)

References 66 publications

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“…Furthermore, these findings might be a result of the adsorption of the activated compound which prefers the association rather than dissociation on the MS surface. This is a quasi-substitution phenomenon between inhibitor molecules in the acidic solution and H2O molecules present at the MS/electrolyte interface [6,26]. In addition, the obtained results (Table 2) indicate that there is a perfect relationship between Ea and∆H* values, which further confirm and validate all these observations.…”

Section: Influence Of the Temperature On Inhibitor Performancessupporting

confidence: 78%

Green Corrosion Inhibition of Mild Steel by Hydrazone Derivatives in 1.0 M HCl

et al. 2020

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In the present study, the inhibition performance of two synthesized hydrazone derivatives (HDZs), namely, (E)-N′-(2,4-dimethoxybenzylidene)-2-(6-methoxynaphthalen-2-yl) propanehydrazide (HYD-1) and N′-cyclohexylidene-2-(6-methoxynaphthalen-2-yl) propanehydrazide (HYD-2) on mild steel (MS) in 1.0 M HCl was investigated using weight loss measurements, electrochemical techniques, and scanning electron microscope (SEM) coupled with energy-dispersive X-ray spectroscopy (EDX). The experimental data suggested that the hydrazone derivatives exhibited a high inhibition performance, which increases with increasing their concentrations. HYD-1 and HYD-2 presented maximum inhibition efficiencies of 96% and 84%, respectively, at an optimal concentration of 5 × 10–3 M. The principal observations that resulted from electrochemical studies are that HYDs affected both anodic and cathodic reactions (mixed inhibitors). Their adsorption, which is a combination of chemisorption and physisorption, obeyed the Langmuir isotherm model. Furthermore, the temperature effect was carried out at various temperatures ranging from 303 to 333 K to verify the corrosion inhibition performance of HYD-1 at higher temperatures. Moreover, SEM-EDX analysis confirmed that HYDs can ensure remarkable prevention against corrosion through the adsorption onto the metal surface.

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Section: Influence Of the Temperature On Inhibitor Performancessupporting

confidence: 78%

Green Corrosion Inhibition of Mild Steel by Hydrazone Derivatives in 1.0 M HCl

et al. 2020

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“…Furthermore, inhibitor/metal interactions, which could be elucidated by interaction and binding energies, were evaluated when the studied systems reach their equilibrium state. For this, the interaction energy, as well as binding energy, was calculated using Equations ( 14) and (15) [37]:…”

Section: Molecular Dynamic Simulationsmentioning

confidence: 99%

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

et al. 2020

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There has been substantial research undertaken on the role of green synthesized corrosion inhibitors as a substantial approach to inhibit the corrosion of metals and their alloys in acidic environments. Herein, electrochemical studies, surface characterization, and theoretical modeling were adopted to investigate the corrosion inhibition proprieties of novel synthesized quinoxaline derivatives bearing 8-Hydroxyquinoline, namely 1-((8-hydroxyquinolin-5-yl) methyl)-3,6-dimethylquinoxalin-2(1H)-one (Q1) and 1-((8-hydroxyquinolin-5-yl)methyl) quinoxalin-2(1H)-one (Q2) on mild steel corrosion in 1 mol/L HCl solution. The principal finding of this research was that both inhibitors acted as good corrosion inhibitors with Q1 having the highest performance (96% at 5 × 10−3 mol/L). Electrochemical results obtained via potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques demonstrated that quinoxaline compounds belonged to mixed-type inhibitors; their presence significantly increased the polarization resistance, preventing simultaneously anodic and cathodic reactions. Further, experimental results provided preliminary insights about the interactions mode between studied molecules and the mild steel surface, which followed the Langmuir adsorption model, and physical and chemical interactions assisted their inhibition mechanism. Besides, SEM analyses confirmed the existence of protective film on the metal surface after the addition of 5 × 10−3 mol/L of quinoxalines. In addition, the temperature and immersion time effects on inhibition performances of quinoxalines were investigated to evaluate their performances in different operating conditions. Besides, Density Functional Theory (DFT) and molecular dynamics (MD) simulations were carried out to explore the most reactive sites of quinoxaline inhibitors and their interaction mechanism. Theoretical results revealed that the inhibitor molecule with additional electron-donating functional group strongly interacted with the steel surface.

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“…Measurements were done on the carbon steel surface after its The C 1s spectrum ( Figure 3a) shows three peaks at 284, 286 and 288 eV. The first peak has the major influence and corresponds to C-C, C-H of aromatic bonds and C=C [43,44]. The second peak confirms the presence of the C-N and C=N bonds [45].…”

Section: Surface Analysis By Xpsmentioning

confidence: 99%

“…A single peak is observed in the N 1s spectra ( Figure 3c) at binding energy 399 eV is attributed to N-Fe, due to the coordination of the nitrogen atom in the hydrazone moiety with the iron atom of the steel surface [44].…”

Section: Surface Analysis By Xpsmentioning

confidence: 99%

Enhanced corrosion inhibition of carbon steel in HCl solution by a newly synthesized hydrazone derivative: Mechanism exploration from electrochemical, XPS, and computational studies

Khamaysa

Selatnia

Zeghache

et al. 2020

Journal of Molecular Liquids

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The corrosion inhibition properties of a synthesized hydrazone derivative namely, 1-(4-isopropyl phenyl)-2-(2,4-dinitrophenyl) (HYD (iso)) on API 5L-X60 carbon steel (CS) in 1.0 M HCl solution were evaluated by chemical, electrochemical, X-ray photoelectron spectroscopy (XPS) and theoretical studies. The obtained results revealed that the tested compound acted as a good corrosion inhibitor with inhibition Journal Pre-proof J o u r n a l P r e-p r o o f 2 efficiency of 96.32% at a concentration of 5×10-3 M. The polarization technique indicated that the HYD (iso) belonged to mixed-type inhibitors, preventing simultaneously anodic and cathodic reactions. The binding between the HYD (iso)'s molecule and CS surface follows a Langmuir adsorption type model and its inhibition mechanism is assisted by physical and chemical interactions. Scanning electron microscope (SEM) and contact angle analyses were performed to examine the surface morphology of inhibited and uninhibited samples. Additionally, theoretical studies using Density Functional Theory (DFT) and molecular dynamics (MD) simulation were performed to explore the most reactive sites of the hydrazone molecule and its adsorption mechanism.

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A comprehensive study about anti-corrosion behaviour of pyrazine carbohydrazide: Gravimetric, electrochemical, surface and theoretical study

Cited by 67 publications

References 66 publications

Green Corrosion Inhibition of Mild Steel by Hydrazone Derivatives in 1.0 M HCl

Green Corrosion Inhibition of Mild Steel by Hydrazone Derivatives in 1.0 M HCl

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

Enhanced corrosion inhibition of carbon steel in HCl solution by a newly synthesized hydrazone derivative: Mechanism exploration from electrochemical, XPS, and computational studies

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