Corrosion inhibition of mild steel by an imidazolium ionic liquid compound: the effect of pH and surface pre-corrosion

Yang, Dongrui; Zhang, Mingzhen; Zheng, Jie; Castaneda, Homero

doi:10.1039/c5ra14556b

Cited by 40 publications

(14 citation statements)

References 55 publications

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“…Recently few green corrosion inhibiters in NaCl medium is reported. In case of ginger, Persian liquorice, and Lemna gibba, the active biochemicals [64][65][66][67][68] are polyphenolic active phytochemicals but in case of C. roseus the presence of bisindole moiety gives long time inhibition efficiency.…”

Section: Corrosion Inhibition Measurementsmentioning

confidence: 99%

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

et al. 2020

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Section: Corrosion Inhibition Measurementsmentioning

confidence: 99%

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

et al. 2020

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“…The CPE has an exponent, “n”, used to study the changes on the metal/solution interface. Values of n close to unity are due to frequency dispersion caused by arbitrary current distribution on electrode surface [42,43] indicating the predominance of capacitive behavior [45], as is the case in this work. Large R t values are associated with slower corroding process [40], consequently, in the presence of studied inhibitors aluminum corrosion slows down more at increased concentration.…”

Section: Resultsmentioning

confidence: 90%

“…The capacitive curves are often attributed to the charge transfer of the corrosion process. Figure 7a,b show the Nyquist plots that have depressed semicircle characteristic of capacitive curves explained to be caused by the dispersion effect from surface irregularities and heterogeneities [43]. The inductive curves at low frequency values are thought to be caused by the relaxation process when species such as Hads+ or inhibitor species adsorb on the electrode surface [42].…”

Section: Resultsmentioning

confidence: 99%

Corrosion Resistance of Aluminum against Acid Activation: Impact of Benzothiazole-Substituted Gallium Phthalocyanine

et al. 2019

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This study describes the adsorption behavior of organic inhibitors at the aluminum-HCl solution interface and their corrosion inhibition performance. The organic inhibitors employed are: 4-(benzo [d]thiazol-2ylthio)phthalonitrile (BTThio) and tetrakis[(benzo[d]thiazol-2-yl-thio)phthalo- cyaninato]gallium(III) chloride (ClGaBTThioPc). The corrosion behavior of these inhibitors is investigated using electrochemical and computational techniques. Open circuit potential results reveal predominant cathodic character for the mechanism of aluminum corrosion inhibition by the inhibitors. Inhibition efficiency values from potentiodynamic polarization measurements increase from 46.9 to 70.8% for BTThio and 59.7 to 81.0% for ClGaBTThioPc within the concentration range of 2 to 10 μM. Scanning electron microscopy (SEM) measurements reveal protection of the metal surface from acid attack, in the presence of the inhibitors and energy dispersive X-ray (EDX) measurements show that the most probable way by which the inhibitors protect the metal surface would be by shielding it from the corrosion attacks of Cl− from the acid. Quantum chemical parameters corroborate well with experimental findings.

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“…Here, ( ) R P inh and R P were the polarization resistance in the presence and absence of the inhibitor with different concentration of the inhibitor at 298 K [21][22][23][24][25][26][27].…”

Section: Electrochemical Methodsmentioning

confidence: 99%

Experimental and computational studies of imidazolium based ionic liquid 1-methyl- 3-propylimidazolium iodide on mild steel corrosion in acidic solution

Parveen

Bashir

Thakur

et al. 2019

Mater. Res. Express

105

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Corrosion inhibitive property of ionic liquid 1-Methyl-3-propylimidazolium iodide (MPII) on Mild Steel in 1 M H 2 SO 4 was investigated by experimental and computational Studies. The inhibition efficiency of inhibitor MPII at various concentrations, temperature and time duration were studied by gravimetric measurements, potentiodynamic polarization techniques, electrochemical impedance spectroscopy (EIS), surface studies and computational studies. The results from potentiodynamic polarization studies revealed that inhibitor 1-Methyl-3-propylimidazolium iodide acts as a mixed type inhibitor with a high inhibition efficiency of 91% at 298 K. Adsorption of the inhibitor on the surface of mild steel follows the Langmuir adsorption isotherm. The mechanism of adsorption was also validated by quantum chemical studies. Morphology and topography of the Mild Steel surface with and without the inhibitor were investigated by SEM. Thermodynamic parameters for adsorption like adsorption equilibrium (K ads ), DH , ads DS , ads Free energy of adsorption i.e. ΔG ads were also calculated so as to project the mechanism of adsorption. Computational data obtained from the Density functional theory (DFT) were used to acquire detailed theoretical insights. Appreciably Electrochemical impedance spectroscopy, Molecular dynamic simulation and quantum chemical calculation confirms the interaction of inhibitor with metal which leads to increases in inhibition efficiency.

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Corrosion inhibition of mild steel by an imidazolium ionic liquid compound: the effect of pH and surface pre-corrosion

Abstract: The corrosion inhibition performance of 1-decyl-3-methylimidazolium chloride (DMICL) on mild steel was investigated in a carbon dioxide-saturated NaCl solution at pH 3.8 and 6.8.

Cited by 40 publications

References 55 publications

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

Corrosion Resistance of Aluminum against Acid Activation: Impact of Benzothiazole-Substituted Gallium Phthalocyanine

Experimental and computational studies of imidazolium based ionic liquid 1-methyl- 3-propylimidazolium iodide on mild steel corrosion in acidic solution

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