Electrochemical Study on the Inhibition Effect of Phenanthroline and Its Cobalt Complex as Corrosion Inhibitors for Mild Steel

Liu, Xia; Okafor, Peter C.; Jiang, Bin; Hu, Hongxiang; Zheng, Yuan

doi:10.1007/s11665-015-1608-9

Cited by 12 publications

(7 citation statements)

References 42 publications

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“…Generally, the Δ G ads o values around −20 kJ mol –1 or higher indicate physical adsorption. However, those around −40 kJ mol –1 or lower are associated with chemical adsorption, as previously reported in the literature. , …”

Section: Resultssupporting

confidence: 83%

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Corrosion Control of Carbon Steel in Water-Based Mud by Nanosized Metallo-Cationic Surfactant Complexes During Drilling Operations

et al. 2020

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In this work, three nanometal complexes named cetyltrimethyammonium dibromodichloro zincate (CT-Zn), cetyltrimethyammonium dibromodichloro cuprate (CT-Cu), and cetyltrimethyammonium dibromodichloro manganesate (CT-Mn) were prepared, characterized, and evaluated as corrosion inhibitors for carbon steel in water-based mud (WBM). The chemical structure of the prepared complexes was confirmed by the use of Fourier transform infrared spectroscopy, Raman spectroscopy, elemental analysis, atomic absorption spectroscopy, dynamic light scattering, and thermogravimetric analysis techniques. The surface tension of the complexes was measured. The critical micelle concentrations and some of the surface properties were also determined. The compounds were evaluated as corrosion inhibitors for carbon steel in the prepared WBM using potentiodynamic polarization and weight loss methods during the static and dynamic conditions of the drilling operations. The results indicated that the prepared metal complexes showed high anticorrosion action as the inhibition efficiency increased gradually with the increase in the concentrations of the prepared complexes until it reached the maximum value (93.1%) at 300 ppm for CT-Cu. The order of inhibition efficiency of these inhibitors was as follows: CT-Cu > CT-Zn > CT-Mn. The polarization curves showed that these complexes acted as mixed-type inhibitors. According to the results, the adsorption of these compounds obeyed Langmuir adsorption isotherm. Surface analysis of the carbon steel samples was investigated using scanning electron microscopy, energy dispersive X-ray, and X-ray diffraction techniques. Rheological properties, gel strength, thixotropy, and filtration properties were also measured according to American Petroleum Institute specifications.

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Section: Resultssupporting

confidence: 83%

“…However, those around −40 kJ mol –1 or lower are associated with chemical adsorption, as previously reported in the literature. 67 , 68 …”

Section: Resultsmentioning

confidence: 99%

Corrosion Control of Carbon Steel in Water-Based Mud by Nanosized Metallo-Cationic Surfactant Complexes During Drilling Operations

et al. 2020

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“…The results obtained from the electrochemical measurements are in reasonable agreement and confirm once more that Phenanthroline shows good inhibition performance (above 95%) for cast iron in hydrochloric acid solution. A comparison of corrosion inhibition efficiency of phenanthroline with various phenanthroline derivatives reported as corrosion inhibitors is presented in Table 2 [22][23][24][25][48][49][50][51][52].…”

Section: Eis Studies At 25 O Cmentioning

confidence: 99%

“…Obi-egbedi et al have tested a synthetized Phenanthroline derivative as a corrosion inhibitor for mild steel in 0.5 M H 2 SO 4 solution [24]. Furthermore, Xia Liu et al [25] have studied the effect of Phenanthroline and its cobalt complex on the corrosion of mild steel in 0.1 M H 2 SO 4 solution. However, an overview of the literature revealed that few studies were devoted to the corrosion inhibition of various categories of cast iron in acidic medium.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Corrosion Inhibition Performance of Phenanthroline for Cast Iron in Acid Solution

Idir¹,

Kellou-Kerkouche

2018

J. Electrochem. Sci. Technol

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The corrosion inhibition of cast iron in 1 M HCl by Phenanthroline (Phen) was investigated using potentiodynamic polarization (PDP) curves, electrochemical impedance spectroscopy (EIS), surface analysis and theoretical calculations. It is found that Phen exhibits high inhibition activity towards the corrosive action of HCl and its adsorption obeys the Langmuir adsorption isotherm model. The results showed that inhibition efficiency increases with Phen concentration up to a maximum value of 96% at 1.4 mM, and decreases slightly with the increase in temperature. The free adsorption energy value indicates that Phen adsorbs on cast iron surface in 1 M HCl via a simultaneous physisorption and chemisorption mechanism. Scanning electron microscopy (SEM) micrographs, atomic force microscopy (AFM) and FTIR analysis confirmed the formation of a protective film on cast iron surface, resulting in the improvement of its corrosion resistance in the studied aggressive solution. Quantum chemical calculations at the DFT level were achieved to correlate electronic structure parameters of Phen molecules with their adsorption mode.

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“…The standard free energy of adsorption (ΔG 0 ads ) is obtained according to the following equation 45 : For ΔG ads ≤-20 kJ mol -1 , the organic molecules are physisorbed on metallic surface, whereas for ΔG ads ≥-40 kJ mol -1 , the inhibitory molecules are chemisorbed on metallic surface by charge sharing or transfer 46 . In this study, the calculated value of ΔG ads is -43.68 kJ mol -1 , thus 2,2'-bipyridyl adsorption is spontaneous and chemisorption.…”

Section: Open Circuit Potentialmentioning

confidence: 99%

Inhibition Effect of 2,2’-Bipyridyl on the Corrosion of Austenitic Stainless Steel in 0.5M H2 SO4

Gharbi¹,

Himour²,

Abderrahmane³

et al. 2018

Orient. J. Chem

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The corrosion inhibition of AISI309 austenitic stainless steel by 2,2'-Bipyridyl in 0.5M H 2 SO 4 at 298K was studied using the mass loss' method, the potentiodynamic polarization (Tafel), the linear polarization (LRP) and the electrochemical impedance spectroscopy (EIS). The results showed a mixed inhibition mode and an increase in the charge transfer resistance, due to inhibitor molecules' adsorption at steel surface. This latter obeys to Langmuir isotherm. The observation by scanning electron microscopy (SEM) and the analysis by energy dispersion spectrometry (EDS) confirm an inhibitor film's presence. The calculated inhibition efficiencies are in accordance with 87.78% maximum value.

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Electrochemical Study on the Inhibition Effect of Phenanthroline and Its Cobalt Complex as Corrosion Inhibitors for Mild Steel

Cited by 12 publications

References 42 publications

Corrosion Control of Carbon Steel in Water-Based Mud by Nanosized Metallo-Cationic Surfactant Complexes During Drilling Operations

Corrosion Control of Carbon Steel in Water-Based Mud by Nanosized Metallo-Cationic Surfactant Complexes During Drilling Operations

Experimental and Theoretical Studies on Corrosion Inhibition Performance of Phenanthroline for Cast Iron in Acid Solution

Inhibition Effect of 2,2’-Bipyridyl on the Corrosion of Austenitic Stainless Steel in 0.5M H2 SO4

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