Corrosion inhibition of mild steel in acidic medium by poly (aniline-co-o-toluidine) doped with p-toluene sulphonic acid

Srivastava, Varsha; Singh, Manjeet

doi:10.1007/s10800-010-0195-6

Cited by 28 publications

(13 citation statements)

References 43 publications

(40 reference statements)

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“…4a shows impedance spectra for varying concentrations of PANI/ CTS inhibitor, with impedance levels changing signicantly aer the samples were immersed in PANI/CTS solution for 2 h. Nyquist plots revealed a single depressed capacitive loop over the frequency range that was studied, with the semicircles indicating the charge-transfer resistant, double-layer capacitance properties of the electrode. [38][39][40][41] The single semicircle in the Nyquist diagram indicated that metal dissolution was controlled by a single transfer process, with similar shaped Nyquist plots indicating that the corrosion mechanism was unaffected in the presence of inhibitor molecules. 42,43 The Nyquist diagrams for Q235 steel in the presence of the PANI/ CTS composite revealed that the diameter of the semicircles was larger than those produced in its absence.…”

Section: Eis Measurementsmentioning

confidence: 99%

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Kong

Chen

et al. 2019

RSC Adv.

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Section: Eis Measurementsmentioning

confidence: 99%

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Kong

Chen

et al. 2019

RSC Adv.

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“…As steel, an important and widely used material at any given industrial sector, is highly prone to corrosion, it needs to be protected, which is a challenging task for scientists and engineers [1,2,4]. Corrosion protection using inhibitors is one of the easiest, economic and effective methods, for which many inorganic compounds are found suitable [7].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition Performance of Lignin Extracted from Black Liquor on Mild Steel in 0.5 M H2SO4 Acidic Media

Shivakumar

Dharmaprakash

Manjappa

et al. 2017

Port. Electrochim. Acta

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In this study, lignin, a polyhydroxy compound, was extracted from black liquor of pulp and paper industry, and characterized. In view of the potential of such polyhydroxy compounds to adsorb onto metal surfaces, the corrosion inhibition efficiency of lignin on the corrosion of mild steel by 0.5 M H2SO4 has been studied using weight loss method, electrochemical polarization and impedance methods. The morphological changes of the surface during corrosion, in the presence and absence of the inhibitor, were studied by scanning electron microscopy. Results of these studies show that lignin does inhibit the corrosion of mild steel by sulfuric acid, and that the inhibition efficiency increased with lignin's concentration.

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“…Table IV shows that all of the standard entropy of adsorption (Δ S ) are positive, which can interpret that more water molecules desorbed from the metal surface lead to an increase in system disorder (Srivastava and Singh, 2010).…”

Section: Resultsmentioning

confidence: 87%

Corrosion inhibition and the structure-efficiency relationship study of two cationic surfactants

Chen

Lin

Liu

et al. 2019

ACMM

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Purpose As an example of structure-efficiency relationship study, this paper aims to evaluate the corrosion inhibition effect of two cationic surfactants, cetyl-trimethyl ammonium chloride (CTAC) and cetyl-dimethyl-hydroxyethyl ammonium chloride (CDHAC), and to discuss the effect of structure on the performance by thermodynamics methods. Design/methodology/approach The effect of the two cationic surfactants, CTAC and CDHAC, on the corrosion of the mild steel in HCl solution was investigated by using weight loss measurements, and the activation energies of CTAC and CDHAC involved in the corrosion inhibition were calculated and discussed. Findings The weight loss measurements showed that the corrosion inhibition efficiency of CDHAC was higher than that of CTAC in any case. The effects of the structure on performance were discussed, and the following data are available from the results, all of ΔS are positive, the values of ΔG are both close to −40 kJ·mol-1 and the values of ΔH are 10.960 and 36.996 kJ·mol-1, which indicate that the surfactant molecules are spontaneously adsorbed on the surface of the steel surface, and the adsorption on the steel plate is endothermic chemical adsorption. Originality/value The available data show that most organic inhibitors undergo physisorption on the metal surface, while in the presence of non-bonded and p-electrons, the inhibitor molecules may undergo chemisorption. This work showed that the two surfactant molecules are spontaneously adsorbed on the surface of the steel surface, and the adsorption on the steel plate is endothermic chemical adsorption.

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Corrosion inhibition of mild steel in acidic medium by poly (aniline-co-o-toluidine) doped with p-toluene sulphonic acid

Cited by 28 publications

References 43 publications

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Corrosion Inhibition Performance of Lignin Extracted from Black Liquor on Mild Steel in 0.5 M H2SO4 Acidic Media

Corrosion inhibition and the structure-efficiency relationship study of two cationic surfactants

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