Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Verma, Chandrabhan; Quraishi, M.A.; Kluza, Kamil; Makowska‐Janusik, M.; Olasunkanmi, Lukman O.; Ebenso, Eno E.

doi:10.1038/srep44432

Cited by 155 publications

(71 citation statements)

References 73 publications

(125 reference statements)

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“…Optimized structure, HOMO and LUMO for studied inhibitor molecules in aqueous medium is shown in Figure . The investigated molecules SS1 & SS2 differ from one another by the presence of hetero atoms, which change the properties of molecules . Table shows calculated electronic properties like I , A , Δ E , μ, Χ , η and Δ N of SS1 & SS2 in gas phase and aqueous medium .…”

Section: Resultscontrasting

confidence: 66%

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

Vikneshvaran

Velmathi

2019

ChemistrySelect

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Corrosion of stainless steel (SS) under acidic medium were studied with and without the presence of N',N'''-(thiophene-2,5-diylbis(methanylylidene))di(isonicotinohydrazide) (SS1) and 2,2'-(thiophene-2,5-diylbis(methanylylidene))bis(N-phenylhydrazinecarbo thioamide) (SS2). Different techniques like weight loss, potentiodynamic polarization, Electrochemical Impedance Spectroscopy (EIS), Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectroscopy (FT-IR) and Atomic Force Microscopy (AFM) were employed to demonstrate the corrosion inhibitive behaviour of studied Schiff bases. Results of all the experiments proved that SS2 functions as more convincing inhibitor than SS1 under the studied condition. Corrosion inhibition performance of Schiff base with more sulphur atoms (SS2) against corrosion of SS under acidic medium is comparatively high. Theoretical analysis was further implemented to derive various molecular parameters of the Schiff bases. Energy values of molecular orbitals such as E HOMO , E LUMO and ΔE etc. have provided helpful information regarding electron transfer during adsorption of Schiff bases on stainless steel surface.

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Section: Resultscontrasting

confidence: 66%

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

Vikneshvaran

Velmathi

2019

ChemistrySelect

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“…The heteroatoms play a significant role in the adsorption process of inhibitor molecules onto the mild steel surface (Figure 12). Due to the unshared pair of electrons, the heteroatoms N, O, S, and P containing inhibitor molecules can easily be protonated in strong corrosive electrolyte (HCl, H 2 SO 4 , HNO 3 , and H 3 PO 4 ) solution [26,27]. Therefore, the corrosion inhibitors studied in this paper exist as protonated species in 1 M HCl solution [60].…”

Section: Mechanism Of Inhibitionmentioning

confidence: 95%

“…Methionine, methionine sulfoxide, and methionine sulfone at a respective concentrations of 149, 165, and 181 ppm in 1 M HNO 3 at 30 • C have been shown to attain an inhibition efficiency of 79, 85, and 88%, respectively [25]. A literature surveys showed that there are numerous research articles that dealt with N, O, S, or P-containing compounds for metallic corrosion inhibition [26][27][28], but so far, no report is available that deals with all four heteroatoms (N, O, S, and P) in a single polymer, based on residual methionine, for effective metallic corrosion inhibition.…”

Section: Introductionmentioning

confidence: 99%

New, Amino Acid Based Zwitterionic Polymers as Promising Corrosion Inhibitors of Mild Steel in 1 M HCl

Mazumder

2019

Coatings

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The zwitterionic monomers, N,N'-diallylamino propanephosphonate and amino acid residual N,N'-diallyl-l-methionine hydrochloride were synthesized, with excellent yields. These monomers were utilized in the preparation of zwitterionic homo and co-cyclopolymers 5-7 in aqueous solution using 2,2 -azobis (2-methylpropionamidine) dihydrochloride as an initiator. The polymers were characterized by FT-IR, NMR, and TGA. The performance of these synthesized polymers on mild steel in acidic solution was investigated by gravimetric method, Tafel extrapolation, linear polarization resistance, and electrochemical impedance spectroscopy. At 313 K, the maximum inhibition efficiencies of corrosion inhibitors 5-7 at 4.50 × 10 −4 mol L −1 were found to be 85.2%, 83.3%, and 99.5%, respectively. The inhibition efficiencies obtained from gravimetric weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements were in good agreement. Different adsorption isotherms were also explored to find the best fit, and found to obey Langmuir adsorption isotherm. The thermodynamic parameters, such as activation energy (E a ), standard enthalpy of activation (∆H*), standard entropy of activation (∆S*), adsorption-desorption equilibrium constant (K ads ), and standard free energy of adsorption (∆G o ads ), were determined. Electrochemical data indicated that the zwitterionic copolymer 7 acts as a mixed type inhibitor under the influence of anodic control. The surface morphology of mild steel corrosion was evaluated without and with corrosion inhibitors by AFM, SEM-EDX, and XPS, which confirmed the adsorption of inhibitor molecules on the metal surface.

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“…Corrosion inhibitors find application in minimizing metallic waste in engineering materials, in addition to the advantages of versatility and cost effectiveness when compared to other corrosion protection methods [10,13]. Most of the effective inhibitors are either from biomass precursors or chemical compounds containing hetero-atoms such as oxygen, nitrogen, and sulfur with multiple bonds in their molecules through which they are adsorbed on the metal surface [14][15][16]. This adsorption depends on certain physiochemical properties of the inhibitors: functional group, electron density at the donor atom, n-orbital character, and the electron structure of the molecule.…”

Section: F E + H + → F E 2+ + Hmentioning

confidence: 99%

ExploringMusa paradisiacaPeel Extract as a Green Corrosion Inhibitor for Mild Steel Using Factorial Design Method

Amodu¹,

Odunlami²,

Akintola³

et al. 2019

Corrosion Inhibitors

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The suitability of Musa paradisiaca (banana) peel extract as a green corrosion inhibitor for mild steel in acidic medium (1 M HCl) was investigated using factorial method of the design of experiment. The effects of two independent variables (concentration of banana peel extract and temperature) on the corrosion inhibition efficiency were investigated. The physicochemical properties of the extract such as surface tension, viscosity, flash point, and specific gravity were determined using standardized methods provided by the American System of Testing Materials (D-971). The relationship between the independent variables and the inhibitor efficiency was modeled by gasometric and thermometric methods. The statistical analysis of the inhibition efficiency was carried out using the "Fit Regression Model" of Minitab ® 17.0, while the fitness of the models was assessed by the coefficient of determination (R 2 ) and the analysis of variance (ANOVA). From the results obtained, gasometric method achieved a maximum inhibition efficiency of 66.83%, with an R 2 of 90.76%, whereas thermometric method gave a maximum inhibition efficiency of 65.70%, with an R 2 of 95.56%. This study shows that banana peel extract has the capacity to prevent the corrosion of mild steel in acidic medium.

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Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Cited by 155 publications

References 73 publications

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

New, Amino Acid Based Zwitterionic Polymers as Promising Corrosion Inhibitors of Mild Steel in 1 M HCl

ExploringMusa paradisiacaPeel Extract as a Green Corrosion Inhibitor for Mild Steel Using Factorial Design Method

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