Decyltriphenylphosphonium bromide containing hydrophobic alkyl-chain as a potential corrosion inhibitor for mild steel in sulfuric acid: Theoretical and experimental studies

Goyal, Madhusudan; Vashisht, Hemlata; Alrefaee, Salhah H.; Jain, Reena; Kumar, Satish; Guo, Lei; Verma, Chandrabhan

doi:10.1016/j.molliq.2021.116166

Cited by 24 publications

(9 citation statements)

References 45 publications

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“…Notwithstanding, the anticorrosive property of PILs is the result of the effect exerted by the cation and anion on the general corrosion process: In contrast, the hydronium ions (H 3 O + ), formed during eqs and , are attracted to the cathodic zone, where their reduction and further formation of molecular hydrogen occur (eqs and ); the freed electrons are used in the anodic reactions: Since PILs possess a positive charge, they are adsorbed on the cathodic sites by means of the alkylimidazolium unit, where the [Im + ] cations of PILs, in addition to having π electrons in their aromatic imidazolium ring, present bigger size and higher electron density with respect to protons (H + ), thus promoting a competition among them. In the cathodic sites, the adsorption of CIs is eased by van der Waals forces, occupying higher surface area and forming a barrier that prevents the attack of corrosive ions . Physisorption is the main process occurring (eq ); however, chemical adsorption also takes place with the possible formation of iron– PIL complexes (eq ) according to the obtained Δ G ° ads data: The polymeric chain of PILs works as a physical barrier that limits the passing of water and aggressive ions. − By comparing the results obtained from the electrochemical tests of the PILs poly[VIMC4][Br] and poly[VIMC4][Im], it can be concluded that poly[VIMC4][Br] displayed better anticorrosive performance than poly[VIMC4][Im] because the first one has a straight structure whereas the second one is a reticulated polymer due to the bisacrylamide methylene bridges that are linked to the polymeric chains, forming a network.…”

Section: Results and Discussionmentioning

confidence: 99%

“…In the cathodic sites, the adsorption of CIs is eased by van der Waals forces, occupying higher surface area and forming a barrier that prevents the attack of corrosive ions. 94 Physisorption is the main process occurring ( eq 23 ); however, chemical adsorption also takes place with the possible formation of iron– PIL complexes ( eq 24 ) according to the obtained Δ G ° ads data: The polymeric chain of PILs works as a physical barrier that limits the passing of water and aggressive ions. 95 − 97 By comparing the results obtained from the electrochemical tests of the PILs poly[VIMC4][Br] and poly[VIMC4][Im], it can be concluded that poly[VIMC4][Br] displayed better anticorrosive performance than poly[VIMC4][Im] because the first one has a straight structure whereas the second one is a reticulated polymer due to the bisacrylamide methylene bridges that are linked to the polymeric chains, forming a network.…”

Section: Results and Discussionmentioning

confidence: 99%

Section: °=mentioning

confidence: 99%

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Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies

et al. 2022

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A corrosion inhibition mechanism of API 5L X60 steel exposed to 1.0 M H 2 SO 4 was proposed from the evaluation of three vinylalkylimidazolium poly(ionic liquids) (PILs), employing electrochemical and surface analysis techniques. The synthesized PILs were classified as mixed-type inhibitors whose surface adsorption was promoted mainly by bromide and imidazolate ions, which along with vinylimidazolium cations exerted a resistive effect driven by a charge transfer process by means of a protective PIL film with maximal efficiency of 85% at 175 ppm; the steel surface displayed less surface damage due to the formation of metal−PIL complex compounds.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

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Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies

et al. 2022

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“…Meanwhile, by enhancing the GLU concertation in the harsh environment, the icorr descended continuously until reaching 0.169 µA.cm -2 from the 4 wt.% GLU protected sample. Results showed the GLU effectiveness in steel corrosion decrement and by increasing the GLU concertation up to 4 wt.%, its anti-corrosion performance was enhanced, and over that the corrosion inhibition efficiency was diminished [23,24]. Records from corrosion potential (Ecorr) and anodic branch variations reflected that GLU has mixed protection potential.…”

Section: Protection Mechanism Analysis (Polarization Studies)mentioning

confidence: 98%

Adsorption and mitigation impact of the monosodium glutamate (C₅H₈NO₄Na) bio-molecules on the steel rebar corrosion in the chloride-contaminated simulated concrete pore solution

Mohammadkhah

Dehghani

Ramezanzadeh

2023

Preprint

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Corrosion has caused significant annual costs for building construction and civil architectural designs. In this study, Monosodium glutamate (GLU) was proposed as a potential candidate for long-lasting corrosion inhibition to slow down the rate of corrosion in the concrete pore environment. In this regard, the electrochemical and morphological properties of the various GLU concentrated systems between 1 to 5 wt.% in the simulated concrete pore solution media were investigated. According to the EIS results, adding 4 wt.% of GLU could reduce the mild steel corrosion process by 86% through a mixed inhibition mechanism. Also, the polarization records represented that the samples' corrosion current density was diminished to 0.169 µA.cm-2 after the addition of 4 wt.% GLU into the harsh environment. Using the FE-SEM method, the growth of the GLU layer over the metal substrate was demonstrated. The results of spectroscopic methods, i.e., Raman and GIXRD, demonstrated that GLU molecules were successfully adsorbed over the surface of the metal. Contact angle test outcomes showed that by increasing the GLU concentration to its optimum level (4 wt.%), the surface hydrophobicity was dramatically raised to 62 degrees.

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“…15, 16, the first two peaks are found around 2.4 and 2.8 Å in case 2FPDC and near 2.3 and 2.7 Å in case 4FPDC, respectively, which may be related to the chemical interactions established between the N or S and iron atoms. Other peaks outside of 3.5 Å may be the result of physical interactions between the inhibitor structure and the iron surface [83,84].…”

Section: Monte Carlo Simulations (Mcs)mentioning

confidence: 99%

Corrosion Inhibition Potential of Dithiohydrazodicarbonamide Derivatives for Mild Steel in Acid Media: Synthesis, Experimental, DFT, and Monte Carlo Studies

AlFalah

Kandemi̇rlı

2021

Arab J Sci Eng

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In the present work, new compounds, namely 2-fluoro phenyl-2,5-dithiohydrazodicarbonamide (2FPDC) and 4-fluoro phenyl-2,5-dithiohydrazodicarbonamide (4FPDC), were successfully synthesized and examined as corrosion inhibitors for mild steel in 1 M HCl. The molecular structures were characterized by Fourier transform infrared spectroscopy (FT-IR) and 1 H, 13 C nuclear magnetic resonance (NMR). A scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and atomic force microscope (AFM) were conducted to identify the surface morphology of mild steel in the absence and existence of a corrosion inhibitor. Several electrochemical techniques have been conducted to evaluate inhibitor efficiency. The influence of immersion time on the efficiency of inhibitors was also investigated. The electrochemical results showed that both compounds appeared to be mixed type. However, 4FPDC is slightly more efficient than 2FPDC (97.3% compared with 96.5% at 1 × 10 −2 M and an immersion time of 5 h). The resistance polarization for inhibitors was found to obey an order of 4FPDC > 2FPDC. The Langmuir isotherm system revealed the best match, and the type of adsorption was physisorption and chemisorption in both compounds. SEM and EDX results have confirmed the presence of particles of inhibitor on the metal surface. A smooth surface was observed in the presence of inhibitors approved by AFM. Quantum chemical results showed that the adsorption of molecules of inhibitor takes place predominantly through protonated structures, and strongly agreed with experimental results. The results reveal that excellent inhibition efficiency was attained even in aggressive conditions, and they can be viewed as novel corrosion inhibitors for mild steel with excellent protection. Keywords Materials and Experimental Methods MaterialsA mild steel rod was purchased from a local market with a chemical composition as follows: (Wt.%): 0.18 C,

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Decyltriphenylphosphonium bromide containing hydrophobic alkyl-chain as a potential corrosion inhibitor for mild steel in sulfuric acid: Theoretical and experimental studies

Cited by 24 publications

References 45 publications

Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies

Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies

Adsorption and mitigation impact of the monosodium glutamate (C₅H₈NO₄Na) bio-molecules on the steel rebar corrosion in the chloride-contaminated simulated concrete pore solution

Corrosion Inhibition Potential of Dithiohydrazodicarbonamide Derivatives for Mild Steel in Acid Media: Synthesis, Experimental, DFT, and Monte Carlo Studies

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