Corrosion Inhibition of Aluminium Alloy in 0.75 M KOH Alkaline Solution Using Xylopia aethiopica Seed Extract

Nwosu, O. F.; Osarolube, E.

doi:10.9734/psij/2014/9928

Cited by 4 publications

(5 citation statements)

References 17 publications

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“…These solutions were then tested as inhibitors in the corrosion of 99.95% aluminium in 3% NaCl solution. Apart from this study, 82 all other research work was published on the inhibition of aluminium materials in alkaline (NaOH and KOH) [83][84][85][86][87][88][89][90][91][92][93][94][95][96] and acidic (HCl and H 2 SO 4 ) 9-11,85,93,97-107 solutions ( Table 3).…”

Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

“…The corrosion inhibition of numerous aluminium materials was reported, including pure aluminium 82,86,[90][91][92][93]97,105 and 1xxx, 9,10,85,94,99,103 2xxx, 11,102 3xxx, 87,88 and 8xxx 98,100,104 series aluminium alloys. The corrosion of 3SR aluminium alloy (98.60% Al) in 2 M NaOH solution was investigated in the presence of Gossypium hirsutum L. leaf and seed extracts in NaOH 83 and Phyllanthus amarus leaf extract.…”

Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

“…84 Other aluminium alloys were also tested. 106,107 Leaves, 10,11,[83][84][85][87][88][89]91,93,[97][98][99][100][101][102][103][104]106,107 seeds, 11,86,102 peel, 90 root, 9 and petals 105 were the parts of the plants from which extracts were prepared. Extracts in HCl of Mentha pulegium 102 and Thymus algeriensis 11 were prepared from the aerial parts (leaves and seeds) of the respective plants.…”

Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

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Green corrosion inhibitors for aluminium and its alloys: a review

et al. 2017

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Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

Section: The Corrosion Inhibition Of Plant Extracts Obtained With Solmentioning

confidence: 99%

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Green corrosion inhibitors for aluminium and its alloys: a review

et al. 2017

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“…Adsorption isotherm models are used to investigate the possible adsorption mode of an ethanolic extract of PQ leaves by testing the experimental data obtained with four adsorption isotherm models (73) . The relationship between the surface coverage and the inhibitor concentration forms a basis to the study of the mechanism of adsorption isotherm (74) . All these isotherms are represented as follows (75) f (θ , x)exp(−2aθ ) = KC Where, f(θ , x) is the configurational factor, θ is the surface coverage, C is the concentration of the inhibitor, X is the molecular interaction parameter, and K is the equilibrium constant for the adsorption process.…”

Section: Adsorption Isotherms Behaviourmentioning

confidence: 99%

Corrosion inhibition behaviour on carbon steel in well-water by Ethanolic extract of Portulaca quadrifida (Chicken weed) leaves

Thirupathi¹,

Venkatraman²

2021

IJST

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Objectives: To evaluate the corrosion inhibition of an ethanolic extract of Portulaca quadrifida (PQ) leaves on the carbon steel surface in well-water by using a weight-loss study with various immersion periods, temperatures, and pH. The kinetic and thermodynamic parameters are calculated for various temperatures. Methods: The protective film has been analyzed by using SEM, EDX and AFM studies. The inhibition action of PQ extract was analyzed by potentiodynamic polarization study, the electrochemical impedance studies are used to the analysis the protective layer formed on the carbon steel surface. Findings: The maximum inhibition efficiency is found to be 92% for 500ppm of PQ and 30ppm of Zn 2+ ions at 303K. The synergistic effect exists between ethanolic extract of Portulaca quadrifida leaves and Zn 2+ ions by synergistic parameters. The ethanolic extract of PQ leaves acts as a mixed-type inhibitor. The activation energy (E a ) values indicate that the adsorption of PQ leaves extract on the carbon steel surface. The enthalpy of adsorption (∆H) values suggests that the reaction is endothermic. The free energy of adsorption (∆G ads ) values is negative and less than the -20KJmol -1 . The negative values of ∆S ads are confirmed to form an ordered stable layer of the inhibitor molecule on the carbon steel surface as well as a stable equilibrium between the adsorption and desorption processes. The adsorption isotherm is best fitted with the Langmuir model. Novelty: The ∆G ads values indicate that the adsorption of inhibitor on the carbon steel surface belongs to the physisorption as well as the adsorption layer has an electrostatic character. The adsorption process of the inhibitor is spontaneous. The thermodynamic parameters give a strong interaction between the inhibitor molecules and carbon steel surface. Four adsorption isotherms including Langmuir, El-Awady, Flory-Huggins, and Temkin models, investigate the mode of inhibition of PQ leaves extract.

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“…Copper [94] Flour and yeast Iron in acid [95] Opuntia extract Aluminium [60] Reducing saccharides fructose and mannose Aluminium and zinc [96] Mangifera indica Aluminium [56] Aspilia Aluminium [58] Ziziphus jujuba leaves Aluminium in NaOH [55] Xylopia aethiopica seeds in KOH Aluminium [97] Moringa oleifera Aluminium alloy in 1M NaOH [56] Eugenol from cloves Steel [98] Polyphosphate-silicate-zinc Steel [99] Recent Patents…”

Section: Source Of Natural Products Metal/alloy Referencementioning

confidence: 99%

Green Corrosion Inhibitors for Coatings

Payal

Jain

2021

Sustainable Corrosion Inhibitors

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Corrosion is emerging as a potential hazard which abolishes metals and their structures and hence become an imperative menace. It is an omnipotent and omnipresent process which is present in every environment, i.e., air, soil, water. Green chemistry is one of the notable branches of chemistry that focuses on the protection of environment and human well–being in an economically viable approach allowing dodging of toxins and reducing hazards due to corrosion. Green chemistry exploited well–known strategy namely green inhibitors to prevent, control or impede the growth of corrosion. Green inhibitors are eco–friendly, cost–effective, renewable natural products which are favourable over toxic synthetic corrosion inhibitors. Extracts of natural products contain natural products containing alkaloids, carboxylic acids, nicotine, polyphenols, quinine, terpenes, and other functional groups possessing elements like C, N, O, S, etc., prompting adsorption via forming a thin layer (coating) on the metallic surface to shield the surface and encumber corrosion. In the field of economical loop, this approach develops various potential applications in manufacturing areas other than ‘Trash to treasure’. Even though a bunch of experiments have been performed and several research articles have been in print, however, the area of green inhibitors is still demanding more investigation on this open issue. More and more interest in the area extended the research, consequentially to a large variety of tried molecules. Nevertheless, the most accepted protocols are classical and, therefore, are incompetent to completely portray the probable worth of inhibitors. Hence all above stated features should be the objective of the contemporary research so that productive analysis to emphasize the weak areas of the green inhibitors field and tackle the prospect research in the field that still requires validation.

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Corrosion Inhibition of Aluminium Alloy in 0.75 M KOH Alkaline Solution Using Xylopia aethiopica Seed Extract

Cited by 4 publications

References 17 publications

Green corrosion inhibitors for aluminium and its alloys: a review

Green corrosion inhibitors for aluminium and its alloys: a review

Corrosion inhibition behaviour on carbon steel in well-water by Ethanolic extract of Portulaca quadrifida (Chicken weed) leaves

Green Corrosion Inhibitors for Coatings

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