Electrochemical and quantum chemical study of purines as corrosion inhibitors for mild steel in 1M HCl solution

Yan, Ying; Li, Weihua; Cai, Lankun; Hou, Baorong

doi:10.1016/j.electacta.2008.03.065

Cited by 355 publications

(133 citation statements)

References 32 publications

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“…The values of the high dipole moment (l = 5.4125 D) and the low energy gap (DE = 251.78 kJ mol -1 ) facilitate adsorption to the copper surface and, therefore, enhance the inhibition efficiency [56], which is in good agreement with the experimental results.…”

Section: Quantum Chemistry Calculationssupporting

confidence: 80%

Acetohydroxamic acid adsorbed at copper surface: electrochemical, Raman and theoretical observations

Guo

et al. 2017

Int J Ind Chem

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Corrosion inhibition effect of AHA film formed on the copper surface by self-assembled monolayers technique was estimated in 3 wt% NaCl solution by electrochemical impedance spectroscopy and polarization methods. Polarization data indicated that AHA was an anodic inhibitor. The maximum inhibition efficiency reached 93.5% in the case of assembly 3 h in 10 mM AHA solution. The adsorption of AHA on the copper surface fits Langmuir adsorption isotherm. Surface-enhanced Raman scattering together with quantum chemical studies demonstrated that N-O and C=O groups were attached to the copper surface, predicting the feasible adsorption centers and confirming the relationship between the molecular structures of AHA and its inhibition property.

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Section: Quantum Chemistry Calculationssupporting

confidence: 80%

Acetohydroxamic acid adsorbed at copper surface: electrochemical, Raman and theoretical observations

Guo

et al. 2017

Int J Ind Chem

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“…It is important to remark that all these compounds displayed corrosion inhibition efficiencies over 90% at rather low concentration values, which resulted even better than other types of corrosion inhibitors reported in the literature [30,[32][33][34][35][36][37][38][39]. All compounds studied in this work showed a corrosion inhibitive activity comparable at least or better than to other organic inhibitors derived from purine nucleobases (adenine and guanine) [53][54][55]. …”

Section: Scheme 1 Propargylation Of Pyrimidine Nucleobases 1-2mentioning

confidence: 84%

Multicomponent Click Synthesis of New 1,2,3-Triazole Derivatives of Pyrimidine Nucleobases: Promising Acidic Corrosion Inhibitors for Steel

et al. 2013

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A series of new mono-1,2,3-triazole derivatives of pyrimidine nucleobases were synthesized by one-pot copper(I)-catalyzed 1,3-dipolar cycloaddition reactions between N-1-propargyluracil and thymine, sodium azide and several benzyl halides. The desired heterocyclic compounds were obtained in good yields and characterized by NMR, IR, and high resolution mass spectrometry. These compounds were investigated as corrosion inhibitors for steel in 1 M HCl solution, using electrochemical impedance spectroscopy (EIS) technique. The results indicate that these heterocyclic compounds are promising acidic corrosion inhibitors for steel.

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“…In all cases, it is observed that the linear regression between C inh / θ and C inh , calculated by the computer, and the slope and the linear correlation coefficient (r 2 ) are close to unity, as shown in Fig. (9) and (10), respectively; the correlation coefficient r 2 is higher than 0.99 [20], reflecting adsorption of P(pPD) species on the electrode surface and applicability of Langmuir isotherm model (c.f. Table (5)).…”

Section: Adsorption Isotherms and Thermodynamic Functions Of Adsorptimentioning

confidence: 88%

Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium

Rehim¹,

Sayyahand²,

Azooz³

2012

Port. Electrochim. Acta

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The corrosion behavior of mild steel (MS) in HCl solution containing various concentrations of electropolymerized P(p-phenylenediamine), P(pPD), has been investigated using weight loss and potentiodynamic polarization techniques. The data obtained from the two techniques are comparable and showed that the presence of P(pPD) in the acid solutions suppresses the corrosion rate of MS indicating that these polymers act as corrosion inhibitors (predominantly as anodic inhibitors). The inhibition efficiency (IE%) of the polymer enhances with increasing their concentrations and decrease with an increase in temperature. The inhibition occurs through adsorption and formation of barrier film on the metal surface which separates the metal from direct contact with the corrosive medium and hence protects the metal against the corrosion. The adsorption followed the Langmuir isotherm. The thermodynamic functions of the adsorption and dissolution processes were evaluated.

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Electrochemical and quantum chemical study of purines as corrosion inhibitors for mild steel in 1M HCl solution

Cited by 355 publications

References 32 publications

Acetohydroxamic acid adsorbed at copper surface: electrochemical, Raman and theoretical observations

Acetohydroxamic acid adsorbed at copper surface: electrochemical, Raman and theoretical observations

Multicomponent Click Synthesis of New 1,2,3-Triazole Derivatives of Pyrimidine Nucleobases: Promising Acidic Corrosion Inhibitors for Steel

Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium

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