Adsorption and corrosion inhibiting behavior of Passiflora foetida leaf extract on mild steel corrosion

Muthumanickam, S.; Jeyaprabha, B.; Karthik, R.; Elangovan, A.; Prakash, P.

doi:10.17675/2305-6894-2015-4-4-6

Cited by 18 publications

(13 citation statements)

References 30 publications

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“…The results of the study are summarized in Table 2. Analysis of the Table 2 shows that increasing the concentration of the inhibitor was accompanied by a decrease in the rate of corrosion and led to increasing of the inhibition efficiency, this due to the fact that the adsorption coverage increases, which shields the carbon steel surface efficiently from the medium [17]. This decrease was significant even at low concentrations.…”

Section: Weight Loss Testsmentioning

confidence: 99%

Characterization of corrosion products formed on carbon steel in hydrochloric acid medium by 4-(dimethylamino)-1-(6-methoxy- 6-oxohexyl)pyridinium bromide

2016

Int. J. Corros. Scale Inhib.

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The inhibition of corrosion of carbon steel in 1 M HCl by the synthesized ionic liquid 4-(dimethylamino)-1-(6-methoxy-6-oxohexyl)pyridinium bromide (DMOPB) is performed by electrochemical, gravimetric techniques and surface analysis techniques. The efficiency of inhibition increases with the inhibitor concentration and reached 93% at 10 -3 M. The polarization data indicate that the tested inhibitor is a mixed type. The adsorption of the inhibitor on the surface of the steel in 1 M HCl follows the adsorption isotherm Langmuir. The study of the effect of temperature (303-333 K) on the behavior of the steel in 1 M HCl in the absence and presence of 10 -3 M of the inhibitor shows that the inhibitory efficiencies increase with temperature in this studied range. The corresponding activation parameters in the absence and presence of inhibitor were determined and discussed. The inhibition efficiency was closely related to orbital energies (EHOMO and ELUMO). The correlation between quantum parameters and experimental inhibition efficiency has been validated. Scanning electron microscopy images revealed that the inhibitor formed protective film on mild steel surface.

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Section: Weight Loss Testsmentioning

confidence: 99%

Characterization of corrosion products formed on carbon steel in hydrochloric acid medium by 4-(dimethylamino)-1-(6-methoxy- 6-oxohexyl)pyridinium bromide

2016

Int. J. Corros. Scale Inhib.

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“…[14,19,[21][22][23]. Furthermore, research has revealed that the basic components of plant extracts are alkaloids, steroids, sugars, gallic acid, tannic acid, and flavonoids, which have been found to improve the protection of metal surface against corrosion [24][25][26].…”

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 1 M HCl in presence of MPSE can be explained on the basis of molecular adsorption [16]. MPSE inhibits the corrosion of mild steel by controlling both the anodic and cathodic reactions.…”

Section: Mechanism Of Inhibitionmentioning

confidence: 99%

“…Moreover, Plant extracts contain a variety of natural products such as essential oils, tannins, pigments, steroids, terpenes, flavones and flavonoids, among other well-known active substances used as corrosion inhibitors [14][15][16]. These compounds often present conjugated aromatic structures, long aliphatic chains bearing N, S, and O heteroatoms with free electron pairs available to bond with the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Mild steel protection in acidic media using Mucuna pruriens seed extract

Akalezi¹,

Ogukwe²,

Ejele³

et al. 2016

Int. J. Corros. Scale Inhib.

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The inhibition of corrosion of mild steel in 1 molar hydrochloric acid solution (1 M HCl) by Mucuna pruriens seed extract (MPSE) was investigated by weight-loss and electrochemical techniques. A significant decrease in the corrosion rate of mild steel was observed in the presence of the investigated additive and the inhibition efficiency was found to depend on the concentration of the MPSE. The potentiodynamic polarization data indicated that this additive was of mixed type, but the anodic effect was more pronounced. Nyquist plots showed that on increasing the MPSE concentration, the charge transfer resistance increased and double layer capacitance decreased. The thermodynamic parameters of adsorption revealed a strong interaction between the MPSE constituents and the corroding metal surface. MPSE lowered the corrosion reaction by blocking the mild steel surface through chemical adsorption. The mechanism of inhibition was discussed in the light of the chemical structure of the four major components of MPSE.

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Adsorption and corrosion inhibiting behavior of Passiflora foetida leaf extract on mild steel corrosion

Cited by 18 publications

References 30 publications

Characterization of corrosion products formed on carbon steel in hydrochloric acid medium by 4-(dimethylamino)-1-(6-methoxy- 6-oxohexyl)pyridinium bromide

Characterization of corrosion products formed on carbon steel in hydrochloric acid medium by 4-(dimethylamino)-1-(6-methoxy- 6-oxohexyl)pyridinium bromide

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

Mild steel protection in acidic media using Mucuna pruriens seed extract

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