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Kaur J, Almujibah H, Alam MM, Singh A, Saxena A, Verma DK, Berdimurodov E. Electrochemical and DFT Studies of the Pistacia Integerrima Gall Extract: An Eco-friendly Approach towards the Corrosion of Steel in Acidic Medium. ACS OMEGA 2024; 9:7643-7657. [PMID: 38405447 PMCID: PMC10882615 DOI: 10.1021/acsomega.3c06824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/30/2023] [Accepted: 01/22/2024] [Indexed: 02/27/2024]
Abstract
A novel application of the Pistacia integerrima gall extract as an environmentally friendly corrosion inhibitor is reported in this study. The major phytochemicals present in the gall extract, namely pistagremic acid, β-sitosterol, pistiphloroglucinyl ether, pistaciaphenyl ester, naringenin, and 5,7-dihydroxy-2-(4-hydroxyphenyl)-2,3-dihydrochromen-4-one, play key roles in its anticorrosive behavior on steel in aggressive media. Several approaches were used to study the corrosion prevention activity of steel in 1 M H2SO4, including weight loss analysis, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and density functional theory (DFT). At 2000 mg L-1, the highest efficiency of 92.19% was observed in 1 M H2SO4. An SEM study was conducted to validate the surface coverage of the metal surface. DFT studies revealed several nucleophilic regions present in the phytochemicals of the inhibitor, which supported the favorable nucleophilicity. Corrosion studies have not been performed on this sample. Phytochemicals make it an effective corrosion inhibitor, and its extraction process utilizes distilled water, making it better than other inhibitors. It has been proven that the obtained values of ΔEInhDFT for pistiphloroglucinyl, pistaciaphenyl ether, and naringenin organic compounds were very low, confirming the high reactivity of these corrosion inhibitors. The order of the values of ΔEInhDFT is as follows: pistaciaphenyl ether > pistiphloroglucinyl ether > naringenin organic compound; this suggests that pistaciaphenyl ether is more reactive than the other compounds. In this study, P. integerrima gall extract emerges as a novel and highly effective corrosion resistance agent in 1 M H2SO4, chosen for its relevance to acid pickling and cleaning processes.
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Affiliation(s)
- Jasdeep Kaur
- Department
of Chemistry, Chandigarh University Mohali, NH-05, Ludhiana - Chandigarh State
Highway, Sahibzada Ajit Singh Nagar, Punjab 140413, India
| | - Hamad Almujibah
- Department
of Civil Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif City 21974, Saudi Arabia
| | - Mohammad Mahtab Alam
- Department
of Basic Medical Sciences, College of Applied Medical Science, King Khalid University, Abha 61421, Saudi Arabia
| | - Abha Singh
- Department
of Basic Sciences, College of Science and Theoretical Studies, Dammam-branch, Saudi Electronic University, Riyadh 11673, Saudi Arabia
| | - Akhil Saxena
- Department
of Chemistry, Chandigarh University Mohali, NH-05, Ludhiana - Chandigarh State
Highway, Sahibzada Ajit Singh Nagar, Punjab 140413, India
| | - Dakeshwar Kumar Verma
- Department
of Chemistry, Government Digvijay Autonomous
Postgraduate College, Rajnandgaon Chhattisgarh, 491441, India
| | - Elyor Berdimurodov
- New Uzbekistan
University, Mustaqillik
ave. 54, Tashkent 100007, Uzbekistan
- Medical
School, Central Asian University, Tashkent 111221, Uzbekistan
- Faculty
of Chemistry, National University of Uzbekistan, Tashkent 100034, Uzbekistan
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2
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Abuelela AM, Kaur J, Saxena A, Bedair MA, Verma DK, Berdimurodov E. Electrochemical and DFT studies of Terminalia bellerica fruit extract as an eco-friendly inhibitor for the corrosion of steel. Sci Rep 2023; 13:19367. [PMID: 37938591 PMCID: PMC10632492 DOI: 10.1038/s41598-023-45283-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 10/18/2023] [Indexed: 11/09/2023] Open
Abstract
It is well known that metal corrosion causes serious economy losses worldwide. One of the most effective ways to prevent corrosion is the continuous development of high-efficient and environment-friendly corrosion inhibitors. Among the widely used organic and inorganic corrosion inhibitors, plant extracts are top candidates due to their nontoxic nature. The present study reports a novel application of the methanolic extract of Terminalia bellerica fruits as an environment friendly corrosion inhibitor for steel in sulphuric acid medium. The phytochemicals of the extract, namely Ellagic, Gallic, and Malic acids, play a key role of the anti-corrosive behavior of the extract. The corrosion prevention activity was studied on the steel in 1 M H2SO4 using a variety of approaches including weight loss analysis (WL), scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), density functional theory (DFT), natural bond orbital analysis (NBO), Fukui function and Monte Carlo simulations (MC). In 1 M H2SO4 solution, the maximum electrochemical inhibition efficiency of 91.79% was observed at 4000 mg/L concentration of the extract. The NBO analysis showed that the charge density of the double bonds and the oxygen atoms of carbonyl and hydroxyl groups of the phytochemicals lies on the top of the natural bond orbitals which promotes the anticorrosive properties of the investigated inhibitors. The surface coverage of steel was validated by SEM measurements. According to DFT studies, numerous nucleophilic regions were present in the active phytochemical constituents of the inhibitor, demonstrating their favorable nucleophilicity. The computed electronic structure of the phytochemicals revealed band gaps of 4.813, 5.444, and 7.562 eV for Ellagic, Gallic, and Malic acids respectively suggesting effective metal-inhibitor interactions. A good correlation between experimental and theoretical findings was addressed.
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Affiliation(s)
- Ahmed M Abuelela
- Department of Chemistry, College of Science, King Faisal University, Al Ahsa, Saudi Arabia.
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt.
| | - Jasdeep Kaur
- Department of Chemistry, Chandigarh University, Mohali, India
| | - Akhil Saxena
- Department of Chemistry, Chandigarh University, Mohali, India.
| | - Mahmoud A Bedair
- Department of Chemistry, College of Science, University of Bisha, P.O. Box 511, 61922, Bisha, Saudi Arabia.
| | - Dakeshwar Kumar Verma
- Department of Chemistry, Government Digvijay Autonomous Postgraduate College, Rajnandgaon, Chhattisgarh, 491441, India
| | - Elyor Berdimurodov
- Chemical & Materials Engineering, New Uzbekistan University, 100007, Tashkent, Uzbekistan
- Medical School, Central Asian University, 111221, Tashkent, Uzbekistan
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Seumo Tchekwagep PM, Aksaray G, Farsak M, Kardaş G. Surface modification of mild steel using 4-carboxyphenyl diazonium in sulfuric and hydrochloric acids. A corrosion study. RSC Adv 2023; 13:16789-16796. [PMID: 37283870 PMCID: PMC10240171 DOI: 10.1039/d3ra01415k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
In this paper, the surface of mild steel is modified with 4-carboxyphenyl diazonium and subsequently, the corrosion behaviour of the modified surface is scrutinized in hydrochloric and sulfuric acid solutions. The diazonium salt was synthesized in situ either in 0.5 M HCl or 0.25 M H2SO4 through the reaction between 4-aminobenzoic acid and sodium nitrite. The surface of mild steel was modified with the obtained diazonium salt with or without the need for electrochemical assistance. Electrochemical impedance spectroscopy (EIS) measurements show that a spontaneously grafted mild steel surface has a better corrosion inhibition efficiency (86%) in 0.5 M HCl. Scanning electron microscopy reveals that the protective film formed on the surface of mild steel exposed to 0.5 M HCl containing the diazonium salt looks more consistent and uniform compared to the surface exposed to 0.25 M H2SO4. Optimized diazonium structure and the separation energy calculated using density functional theory correlate with the good corrosion inhibition obtained experimentally.
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Affiliation(s)
- Patrick Marcel Seumo Tchekwagep
- Chemistry Department, Faculty of Arts and Sciences, Çukurova University 01330 Balcalı Adana Turkey
- Analytical Chemistry Laboratory, Faculty of Science, University of Yaoundé 1 812 Yaoundé Cameroon
| | - Goncagül Aksaray
- Chemistry Department, Faculty of Arts and Sciences, Çukurova University 01330 Balcalı Adana Turkey
| | - Murat Farsak
- Department of Battery Systems and Hydrogen Technologies, Osmaniye Korkut Ata University, Institute of Natural and Applied Science Turkey
| | - Gülfeza Kardaş
- Chemistry Department, Faculty of Arts and Sciences, Çukurova University 01330 Balcalı Adana Turkey
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Alkaloid Extract of Ageratina adenophora Stem as Green Inhibitor for Mild Steel Corrosion in One Molar Sulfuric Acid Solution. ELECTROCHEM 2023. [DOI: 10.3390/electrochem4010009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Green corrosion inhibitors are of great interest due to their exciting and environmentally friendly behavior in mild steel corrosion control during and after the acid cleaning process. Herein, alkaloids were extracted from the stem of Ageratina adenophora and were ensured by qualitative chemical tests as well as spectroscopic test methods. The corrosion inhibition efficacy of the alkaloids against mild steel corrosion was evaluated by gravimetric, electrochemical and EIS measurement methods. In addition, the adsorption isotherm, free energy of adsorption and thermodynamic parameters of the process were evaluated. The investigations indicated the most promising inhibition efficacy of the alkaloids for mild steel corrosion. The adsorption isotherm study revealed that the adsorption of inhibitor molecules on the MS interface was manifested by dominant physisorption followed by chemisorption. Free energy and thermodynamic parameters are well suited to endothermic processes.
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Alkaloids of Solanum xanthocarpum Stem as Green Inhibitor for Mild Steel Corrosion in One Molar Sulphuric Acid Solution. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3040054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The residual ions of the acid cleaning processes induce the further corrosion of the metals, and this could be minimized using green inhibitors. Alkaloids extracted from plant parts could be cost effective and efficient inhibitors. In this work, alkaloids from Solanum xanthocarpum stem were successfully extracted, and they were characterized by qualitative chemical tests and spectroscopic measurements. As-extracted alkaloids were employed as green corrosion inhibitors for mild steel. The effectiveness of the inhibitor was determined by the weight loss and electrochemical measurement methods. From the weight loss measurement, the maximum inhibition efficiency of 93.14% was achieved. The temperature effect study revealed that the inhibitor can work up to a temperature of 58 °C. This could be one of the highest working temperatures among the reported green inhibitors. The electrochemical measurement reveals that the alkaloids could inhibit effectively up to 98.14% of the corrosion and serve as a mixed-type green inhibitor. A study on the kinetic parameters reflects that the inhibitor forms a potential barrier for the protection of a mild steel surface against corrosion. The values obtained from the thermodynamic parameters study reflect that the process is a spontaneous endothermic process. Based on the findings, it is revealed that the alkaloids extracted from S. xanthocarpum can serve as an excellent, eco-friendly and a promising green inhibitor against mild steel corrosion.
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Hau NN, Huong DQ. Effect of aromatic rings on mild steel corrosion inhibition ability of nitrogen heteroatom-containing compounds: Experimental and theoretical investigation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Coriaria nepalensis Stem Alkaloid as a Green Inhibitor for Mild Steel Corrosion in 1 M H2SO4 Solution. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3040047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Using natural plant extracts on metallic substances is the most frequently studied green corrosion inhibition approach in corrosion science. In this work, Coriaria nepalensis Stem Alkaloid (CNSA) has been successfully extracted and characterized by qualitative chemical (Mayer’s and Dragendroff’s) test and spectroscopic (UV and FTIR) measurement. CNSA has been employed as a green inhibitor for Mild Steel (MS) corrosion subjected to 1 M H2SO4 solution. The corrosion inhibition efficacy has been assessed by weight loss and polarization measurement methods. The effect of inhibitor concentration, immersion period, and temperature on the inhibition efficiency for the MS immersed in both acid and inhibitor solutions of different concentrations have been investigated. The maximum inhibition effect observed for CNSA is 96.4% for MS immersed in 1000 ppm inhibitor solution for 6 h at 18 °C by the weight loss measurement method. Similarly, the polarization measurement method observed a 97.03% inhibition efficiency for MS immersed for 3 h. The adsorption of inhibitor molecules on the MS surface aligns with the Langmuir model. The free energy of adsorption obtained is −28.75 kJ/mol indicating physical adsorption dominance over chemical adsorption. These findings suggested that CNSA has greater potential as an efficient green inhibitor.
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8
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Electrochemical study and experimental simulation of the synergistic effect of a formulation based on Ficus pumila Linn. Leaves extract and zinc sulfate on the XC38 steel corrosion inhibition in NaCl solution. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Wang XF, Liu XY, Su F, Li JS, Zhu ZM, Sang XJ, Zhang LC. Enhanced Corrosion Resistance of Carbon Steel in Hydrochloric Acid Solution by Polyoxometalate-Estertin Derivatives. ACS OMEGA 2022; 7:4429-4443. [PMID: 35155936 PMCID: PMC8829858 DOI: 10.1021/acsomega.1c06276] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
The development of acid-resistant and efficient corrosion inhibitors is of great significance for metal protection in many industrial processes. In this work, eight cases of sandwich-type polyoxometalate (POM)-based inorganic-organic hybrids, namely, carboxyethyltin and transition metal (TM) cofunctionalized tungstoantimonates and tungstobismuthates, formulated as Na x K10-x [(SnR)2(TM(H2O)3)2(B-β-SbW9O33)2]·mH2O and Na y K10-y [(SnR)2(TM(H2O)3)2(B-β-BiW9O33)2]·nH2O (abbreviated as SbW9-TM-SnR and BiW9-TM-SnR; TM = Mn, Co, Ni, and Zn; m = 18, 24, 24, and 22; n = 30, 25, 20, and 21; SnR = Sn(CH2CH2COO)) are first used as green corrosion inhibitors for 20# carbon steel in 0.5-2.0 M HCl solutions. Weight loss and electrochemical experiments prove that the corrosion inhibition efficiency is all above 81% for these POM-based corrosion inhibitors at 150 mg L-1, and SbW9-Mn-SnR shows the highest efficiency of 96.9% at 150 mg L-1 after immersion in a 0.5 M HCl solution for 10 h. Scanning electron microscopy-energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy analyses show that these POM-based inhibitors form films on the carbon steel and the adsorption mechanism obeys the Langmuir adsorption model. The thermodynamic activation parameters were calculated, proving the occurrence of both chemical and physical adsorptions. The film-forming mechanism was also analyzed. This work provides guidance for synthesizing new lacunary POM-based materials to protect metals from corrosion in HCl pickling.
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10
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Biological macromolecule as an eco-friendly high temperature corrosion inhibitor for P110 steel under sweet environment in NACE brine ID196: Experimental and computational approaches. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117866] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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A Study of 1-Benzyl-3-phenyl-2-thiourea as an Effective Steel Corrosion Inhibitor in 1.0 M HCl Solution. J CHEM-NY 2021. [DOI: 10.1155/2021/5519411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
1-Benzyl-3-phenyl-2-thiourea (BPTU) was studied as a steel corrosion inhibitor in 1.0 M HCl solution. Experimental methods were conducted including potentiodynamic polarization measurement (PPM), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) analysis. Quantum calculations were performed at B3LYP/6-311G(d,p). Hexamethylenetetramine (URO) was selected for comparison with BPTU. The results showed that BPTU with the concentration of 2 × 10−4 M and at the temperature of 30°C could protect the steel surface with the highest inhibition efficiency of 94.99% and 94.30% according to EIS and PPM, respectively. High temperature decreased BPTU’s ability to inhibit the steel corrosion. The adsorption of BPTU on the steel surface is followed by the modified Langmuir isotherm. Quantum chemical calculations showed that the thiourea functional group is the main adsorption center of BPTU. The experimental results are completely consistent with theoretical calculations.
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12
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Abdelsattar M, Badawi AEFM, Ibrahim S, Wasfy AF, Tantawy AH, Dardir MM. Corrosion Control of Carbon Steel in Water-Based Mud by Nanosized Metallo-Cationic Surfactant Complexes During Drilling Operations. ACS OMEGA 2020; 5:30881-30897. [PMID: 33324797 PMCID: PMC7726765 DOI: 10.1021/acsomega.0c03653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
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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Affiliation(s)
| | | | - Suzan Ibrahim
- Egyptian
Petroleum Research Institute, Nasr City 11727, Cairo, Egypt
| | - Ashraf F. Wasfy
- Chemistry
Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Ahmed H. Tantawy
- Chemistry
Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Mona M. Dardir
- Egyptian
Petroleum Research Institute, Nasr City 11727, Cairo, Egypt
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13
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Huong DQ, Lan Huong NT, Anh Nguyet TT, Duong T, Tuan D, Thong NM, Nam PC. Pivotal Role of Heteroatoms in Improving the Corrosion Inhibition Ability of Thiourea Derivatives. ACS OMEGA 2020; 5:27655-27666. [PMID: 33134729 PMCID: PMC7594336 DOI: 10.1021/acsomega.0c04241] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
1,3-Diphenyl-2-thiourea (DPTU) and 1-phenyl-3-(2-pyridyl)-2-thiourea (PPTU) were selected as the researched subject for investigating the effect of heteroatoms on the low carbon steel corrosion inhibition ability. Results from the potentiodynamic polarization measurements (PPM) indicate that the addition of a nitrogen atom in the benzene ring increases the corrosion inhibition efficiency of PPTU (97.2%), being higher than that of DPTU (93.1%) at the same condition of 2.0 × 10-4 M at 30 °C. The Nyquist diagrams show that increasing the concentrations of both DPTU and PPTU will enhance the charge-transfer resistance and reduce the double-layer capacitance. The obtained data based on PPM and electrochemical impedance spectroscopy methods are in accordance to the analysis based on the scanning electrochemical microscopy images. Besides, results from quantum chemical calculations prove that the heteroatoms in the inhibitor molecules are the adsorption centers, and the benzene rings increase the electrostatic interaction between the inhibitor molecules and the steel surface. Results from Monte Carlo and molecular dynamics simulation have clarified the adsorption mechanism of DPTU and PPTU on the steel surface. Adsorption energies confirm that PPTU displays the higher inhibition ability as compared with DPTU.
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Affiliation(s)
- Dinh Quy Huong
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Viet Nam
| | - Nguyen Thi Lan Huong
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Viet Nam
| | - Tran Thi Anh Nguyet
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Viet Nam
| | - Tran Duong
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Viet Nam
| | - Dinh Tuan
- Department
of Chemistry, University of Sciences, Hue
University, Hue City 530000, Viet Nam
| | - Nguyen Minh Thong
- The
University of Danang, Campus in Kon Tum, Kontum City 580000, Viet Nam
| | - Pham Cam Nam
- Department
of Chemistry, The University of Danang—University
of Science and Technology, Danang
City 550000, Vietnam
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Romaric Wamba Tchio O, Pengou M, Baumier C, Franger S, Teillout A, Martyr Mbomekallé I, De Oliveira P, Péguy Nanseu‐Njiki C, Ngameni E. Comparison between Lacunary and Saturated Keggin Polyoxometalates as Steel Corrosion Inhibitors in Chloride Solution: Contribution of the Lacuna in the Inhibition Mechanism. ChemistrySelect 2020. [DOI: 10.1002/slct.202001591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Martin Pengou
- Faculté des Sciences-ENS Université de Maroua B.P. 46 Maroua Cameroon
| | - Cédric Baumier
- IJCLab, UMR 9012, CNRS Université Paris-Saclay 91405 Orsay Cedex France
| | - Sylvain Franger
- Institut de Chimie Moléculaire et des Matériaux d'Orsay UMR 8182, CNRS, Université Paris-Saclay 91405 Orsay Cedex France
| | - Anne‐Lucie Teillout
- Institut de Chimie Physique, UMR 8000, CNRS Université Paris-Saclay 91405 Orsay Cedex France
| | | | - Pedro De Oliveira
- Institut de Chimie Physique, UMR 8000, CNRS Université Paris-Saclay 91405 Orsay Cedex France
| | | | - Emmanuel Ngameni
- Department of Inorganic Chemistry University of Yaoundé 1 B.P. 812 Yaoundé Cameroon
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15
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Faiz M, Zahari A, Awang K, Hussin H. Corrosion inhibition on mild steel in 1 M HCl solution by Cryptocarya nigra extracts and three of its constituents (alkaloids). RSC Adv 2020; 10:6547-6562. [PMID: 35496024 PMCID: PMC9049698 DOI: 10.1039/c9ra05654h] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 01/16/2020] [Indexed: 11/24/2022] Open
Abstract
Corrosion inhibition effect of the crude extracts (hexane, dichloromethane, methanol) from the bark of Cryptocarya nigra and three alkaloids named N-methylisococlaurine 1, N-methyllaurotetanine 2 and atherosperminine 3 isolated from the Cryptocarya nigra dichloromethane extract (CNDE) were investigated for mild steel corrosion in 1 M HCl solution. An electrochemical impedance study showed that CNDE and 2 reduced the corrosion significantly through a charge transfer mechanism with inhibition efficiency of 91.05% and 88.05%, respectively. Potentiodynamic polarization data indicated that CNDE acted through anodic type inhibition while 2 was a mixed type inhibitor with predominant anodic effectiveness. ΔG ads values calculated from the Langmuir adsorption isotherm plots for CNDE (-28.2 kJ mol-1) and 2 (-13.2 kJ mol-1) suggested that they adsorbed on the mild steel surface via a physisorption mechanism. Scanning electron microscopy micrographs and elemental composition studies confirmed the formation of a protective film over the metal surface. Wastewater quality parameters of all the inhibitors demonstrated good biodegradability as their values were within the permissible limits to discharge for irrigation and horticultural uses.
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Affiliation(s)
- Mas Faiz
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +60-79674193 +60-79674064
| | - Azeana Zahari
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +60-79674193 +60-79674064
| | - Khalijah Awang
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia +60-79674193 +60-79674064
| | - Hazwan Hussin
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia 11800 Minden Penang Malaysia
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16
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Quy Huong D, Duong T, Nam PC. Effect of the Structure and Temperature on Corrosion Inhibition of Thiourea Derivatives in 1.0 M HCl Solution. ACS OMEGA 2019; 4:14478-14489. [PMID: 31528801 PMCID: PMC6740187 DOI: 10.1021/acsomega.9b01599] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/13/2019] [Indexed: 05/12/2023]
Abstract
The corrosion inhibition ability of 1-phenyl-2-thiourea (PTU) and 1,3-diisopropyl-2-thiourea (ITU) for mild steel in 1.0 M hydrochloric was studied by using the potentiodynamic polarization (PDP) curves, electrochemical impedance spectroscopy (EIS), quantum chemical calculations, and Monte Carlo simulations. Conditions which influence the capacity of corrosion inhibition including concentration, structure of thiourea derivatives, and environment temperature were taken into investigation. The highest inhibition efficiencies of PTU and ITU are 98.96 and 92.65% at a concentration of 5 × 10-3 M at 60 °C. In fact, corrosion inhibition ability of PTU is better than that of ITU in acidic solution due to the presence of the benzene ring of PTU. EIS data are very well correlated with PDP results. In addition, the higher inhibition performance with enhancing temperature and the values of ΔG 0 indicated that PTU and ITU participate in chemical adsorption on the metal surface. Their adsorption process on the metal surface follow the Langmuir adsorption isotherm. Both experimental and theoretical results in this study are in good agreement.
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Affiliation(s)
- Dinh Quy Huong
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Vietnam
| | - Tran Duong
- Department
of Chemistry, University of Education, Hue
University, Hue City 530000, Vietnam
| | - Pham Cam Nam
- Department
of Chemistry, The University of Da Nang,
University of Science and Technology, Da Nang City 550000, Vietnam
- E-mail:
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