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Schiff Base and Its Metal Complexes as Ecofriendly Pitting Corrosion Inhibitors on ASTM-A36 Low Carbon Steel in Corrosive Oil and Gas Well Treatment Fluids

A high yield (74.63%) bidentate Schiff base ligand was synthesized from the condensation reaction of 4-aminophenol and 4-diethylamino-2-hydroxybenzaldehyde by the reflux method. Its transition metal complexes of Ni, Cu and Zn were prepared from the corresponding metal salts in methanol solution using the same procedure. The chemical structure of the synthesized Schiff base and its metal complexes was characterized by physicochemical, spectral analysis (FTIR and UV-Visible), and molar conductivity studies which revealed that the metal complexes were non electrolytic. Elemental analysis data for the Schiff base ligand and its metal complexes were used to confirm the general formula of the compound. The spectral data showed that coordination occurred through the azomethine nitrogen atom and the oxygen atom of the phenolic ring. The corrosion inhibition of Schiff base and its metal complexes was evaluated using potentiodynamic polarization (PDP), linear polarization resistance (LPR), and weight loss (WL) methods in acidic oil and gas well treatment fluid. The corrosive fluid was simulated using 1 M HCl solution. The results indicated that the compounds had a promising inhibitory effect on the corrosion of ASTM-A36 low carbon steel in the medium. The effectiveness of the inhibitors decreased with increasing time and temperature, but improved with increasing concentration of the inhibitors. The metal complexes showed a synergistic effect against Schiff base, with NiL1 having the maximum inhibition efficiency of 84.29%. The thermodynamic parameters revealed that the adsorption of the Schiff base and its complexes on the metal surface was spontaneous, endothermic and followed physical adsorption mechanism which conformed perfectly to the Langmuir adsorption isotherm. PDP measurements showed that the Schiff base and its metal complexes acted as mixed type inhibitors. The inhibition efficiency values obtained from the different techniques were comparable. SEM analyses of the corrosion product also confirmed the formation of a protective layer on the metal surface.

Corrosion Inhibition, Schiff Base Ligand, Synthesis, Characterisation

APA Style

Chimezie Peter Ozoemena, Ekerete Jackson Boekom, Ekaete Jacob Abai, Essien Kufre Edet, Inemesit Asuquo Akpan. (2023). Schiff Base and Its Metal Complexes as Ecofriendly Pitting Corrosion Inhibitors on ASTM-A36 Low Carbon Steel in Corrosive Oil and Gas Well Treatment Fluids. Science Journal of Chemistry, 11(5), 168-188.

ACS Style

Chimezie Peter Ozoemena; Ekerete Jackson Boekom; Ekaete Jacob Abai; Essien Kufre Edet; Inemesit Asuquo Akpan. Schiff Base and Its Metal Complexes as Ecofriendly Pitting Corrosion Inhibitors on ASTM-A36 Low Carbon Steel in Corrosive Oil and Gas Well Treatment Fluids. Sci. J. Chem. 2023, 11(5), 168-188. doi: 10.11648/j.sjc.20231105.11

AMA Style

Chimezie Peter Ozoemena, Ekerete Jackson Boekom, Ekaete Jacob Abai, Essien Kufre Edet, Inemesit Asuquo Akpan. Schiff Base and Its Metal Complexes as Ecofriendly Pitting Corrosion Inhibitors on ASTM-A36 Low Carbon Steel in Corrosive Oil and Gas Well Treatment Fluids. Sci J Chem. 2023;11(5):168-188. doi: 10.11648/j.sjc.20231105.11

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

1. Odewunmi, N. A, Mazumder, M. A. J, Mohammed, K. A,. and Ali, S. A. (2021). N1, N1, N12, N12-Tetramethyl-N1, N12-dioctyldodecane-1, 12-diaminium bromide: Its synthesis and application in inhibition of mild steel corrosion in 15% HCl. Journal of Molecular Liquid. 338: 116630.
2. Ituen, E. B, James A. O and O. Akaranta. (2016). Fluvoxamine-based corrosion inhibitors for J55 steel in aggressive oil and gas well treatment fluids. Egyptian Journal of Petroleum. 6 (2), 1–12.
3. Ugi, B. U, Mbang, E. O, Victoria, M. B, Louis, H, Stephen, A. A, and Chijioke E. O. (2022). Adsorption and Inhibition Analysis of Aconitine and Tubocurarine Alkaloids as Eco-friendly Inhibitors of Pitting Corrosion in ASTM – A47 Low Carbon Steel in HCl Acid Environment. Indonesia Journal of Chemistry. 22 (1), 1–16.
4. Ozoemena C. P, Godwin J. A and Ugwuoke, M. C. Corrosion inhibition and adsorption characteristics of Ethanolic extract of brachystegia eurycoma seed on the Corrosion of mild steel in 1m h2so4 acid solution. FUW Trends in Science and Technology Journal. 2021; 5 (2): 382–388.
5. Samuel. N, Ogah S. P. I, Obike A, Igwe J. C, Ogbonna I. V (2015). Investigation of the Inhibitory Action of Brachystegia Eurycoma (Achi) Seed Extracts on the Corrosion of Mild Steel in 2M HCl by Method of Weight Loss. International Journal Of Scientific Research And Education. 3 (1), 3744-3753.
6. M. Migahed, M. EL-Rabiei, H. Nady and E. Zaki. (2018). 1-(2-Aminoethyl)-1-dodecyl-2-undecyl-4,5-dihydro-1H-imidazol-1-ium chloride, 1-(2-Aminoethyl)-1-dodecyl-2-tridecyl-4,5-dihydro-1H-imidazol-1-ium chloride as Corrosion Inhibitors for Carbon Steel in Oil Wells Formation Water. Journal of Molecular Structure. 1159, 10–22.
7. Ozoemena, C. P, Boekom, E. J and Inemesit, I. A. (2023). Synthesis, Characterization and Electrochemical Studies on the Corrosion Inhibition Properties of Schiff Bases for Mild Steel in 1 M HCl Solution. Chemical Science International Journal. 30 (2): 30 – 50.
8. El-Lateef, HMA; Abu-Dief, AM; Mohamed, MAA. (2017). Corrosion inhibition of carbon steel pipelines by some novel Schiff base compounds during acidizing treatment of oil wells studied by electrochemical and quantum chemical methods. Journal of Molecular Structure. 1130: 522-542.
9. Gergely, A., (2019). Phenomenal and Theories in Corrosion Science: Methods of Prevention, Nova Science Publishers Inc., USA.
10. Onuchukwu, A. I., Oguzie, E. E. and Onuoha, G. N. (2004). Studies on the inhibitive action of methylene blue dye on aluminium corrosion in KOH solution. Journal of Corrosion Science and Technology, 1: 88–97.
11. Haruna, A, Rumah, M. M, Sani, U and Ibrahim, A. K. (2020). Synthesis, Characterization and corrosion Inhibition Studies on Mn (II) and Co (II) Complexes Derived from 1-{(Z)-[(2-hydroxyphenyl) imino] methyl}naphthalen-2-ol in 1M HCl Solution. International Journal of Biological, Physical and Chemical Studies. (3) 1, 9-18.
12. BoEkom, E. J, Essien K. E, Okafor P. C. (2016). Experimental and quantum studies: A new corrosion inhibitor for mild steel. Elixir International Journal of corrosion and Dye. 90, 37673-37678.
13. Bardal, E. Corrosion and Protection. (2004). Springer-Verlag, London.
14. Davis, J. R. Corrosion: Understanding the Basics, (2000). ASM International, USA.
15. Ohtsuka, T., Nishikata, A., Sakari, M., and Fushimi, K. (2018). Electrochemistry for Corrosion Fundamentals. Springer, Singapore.
16. Perez, N. Electrochemistry and Corrosion Science, 2nd Ed., (2016). Springer, Cham, Switzerland.
17. Ugi B. U, Obeten M. E, Bassey M. V, Hitler L, Adalikwu S. A, Omaliko C. E, Nandi D. O, Uwah I. E. (2022). Adsorption and inhibition analysis of aconitine and tubocurarine alkaloids as eco-friendly inhibitors of pitting corrosion in ASTM – A47 Low Carbon Steel in HCl Acid Environment. Indonesia Journal of Chemistry. 22 (1), 1–16.
18. Brezinski, M. M., Desai, B. (1997). Oil and Gas Pipeline Fundamentals. Google Patents.
19. Walker, M. L. (1994). Method and composition for acidizing subterranean formations. Google Patents.
20. Williams, D. A,. Holifield, P. K, Looney, J. R and McDougall, L. A. (1993). Inhibited acid system for acidizing wells. Google Patents.
21. Yadav, M. Behera, D. (2012). Sharma, U. Inhibited acid system for acidizing wells. Arabian Journal of Chemistry, 3-12.
22. Ituen, E. B., Akaranta, O. James, A. O. (2016). Elephant grass biomass extract as corrosion inhibitor for mild steel in acidic medium. Journal of Chemical and Material Research. 45–575.
23. Ugi BU, Bassey V. M, Obeten M. E, Adalikwu S. A, Nandi D. O (2020). Secondary plant metabolites of natural product origin-Strongylodon macrobotrys as pitting corrosion inhibitors of steel around heavy salt deposits in Gabu, Nigeria, Journal of Material Science and Chemical Engineering. 8 (5), 38–60.
24. EL Basiony N. M, Elgendy Amr, Nady H, Migahed M. A and Zaki E. G. (2019). Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution. RSC Adv., 9, 10473.
25. Yang Xifeng, Feng Li and Weiwei Zhang (2019). 4-(Pyridin-4-yl) thiazol-2-amine as an efficient nontoxicinhibitor for mild steel in hydrochloric acidsolutions. Royal Society of Chemistry; (9): 10454–10464.
26. Bashir, A. and Siraj, I. T. (2021). Synthesis, Characterization and Antimicrobial Studies of Schiff Base Derived from the Reaction of 2-Thiophenecarboxaldehyde and Ethylenediamine and its Metal (II) Complexes. Chem search Journal of Chemical Society of Nigeria Kano Chapter, 12 (1), 143 -148.
27. Arora, M., Saravanan, J and Shivaji, S. B. (2013). Synthesis, characterization and antimicrobial activity of some Schiff bases of 2-amino-n-(p-acetamidophenyl carboxa, International Journal of Pharmaceutical Science., (8) 21, 1–12.
28. Flores-Frias, E. A., Gonzalez-Hernandez, A,. Barba, V., Lopez-Sesenes, R, Landeros-Martinez L. L, Flores-De los Rios J. P. and Gonzalez-Rodriguez J. G. (2021). Experimental and theoretical evaluation of new 3,3´-methylenedianiline Schiff bases as corrosion inhibitors for carbon steel in sulfuric acid. International Journal of Corrosion Science, (10) 3, 1189–1212.
29. Arulmurugan, S., Kavitha, H. P. and Venkatraman, B. R. (2010). Biological Activities of Schiff Base and its Complexes: A Review. Rasayan Journal of Chemistry, 3, 385-410.
30. Mishra, M., Tiwari, K., Singh, A. K., & Singh, V. P. (2014). Synthesis, structural and corrosion inhibition studies on Mn (II), Cu (II) and Zn (II) complexes with a Schiff base derived from 2-hydroxypropiophenone. Polyhedron, (77), 57–65.
31. Singh, A. Ahamad, I. Singh V and Quraishi, M. A. (2011). Corrosion Inhibition of Carbon Steel in HCl Solution by some Plant Extracts. International Journal of Corrosion Science, 15: 1087–1097.
32. Gomathi V., Selvameena R., Subbalakshmi R., and Valarmathy, G (2013): Synthesis Characterization and antimicrobial studies Schiff Base Complexes of Mn (II), Co (II), Ni (II), Cu (II) and Zn (II) derived from 3-Amino Phenol And 2-Hydroxy-1-naphthaldehyde. International Journal of Recent Scientific Research, 4 (1): 80-83.
33. Kailas, K. H., Sheetal, J. P., Anita, P. P., and Apoorva, H. P. (2016). Four Synthesis Methods of Schiff Base Ligands and Preparation of Their Metal Complex With IR and Antimicrobial Investigation. World Journal of Pharmacy and Pharmaceutical Sciences. 5 (2), 1055–1063.
34. Awe, F. E., Idris, S. O., Abdulwahab, M. and Oguzie, E. E. (2015) Theoretical and experimental inhibitive properties of mild steel in HCl by ethanolic extract of Boscia senegalensis. Cogent Chemistry. 1, 1–14.
35. Eddy, N. O. and Odiongenyi, A. O. (2010). Corrosion Inhibition and Adsorption Properties of Ethanol Extract of IT heinsia crinata / IT on mild steel in H2SO4. Pigment and Resin Technology. 39 (5), 288–295.
36. Yadav, S., Sharma, A., Choudhary, G., Monika and Sharma A. (2014). Inhibitive and adsorption properties of ethanolic extract of fruit of azadirachta indica on the corrosion of copper in HCL. Int. J. Innov. Res. Sci. Eng. Tech. 3, 16127–16136.
37. Khaled, K. F. (2010). Corrosion control of copper in nitric acid solutions using some amino acids: A combined experimental and theoretical study. Corrosion Science. 52, 3225–3234.
38. Roy P., and Sukul D. (2015). Corrosion inhibition of mild steel in acidic medium by polyacrylamide grafted Guar gum with various grafting percentage: effect of intramolecular synergism. Corrosion Science. 88, 246–253.
39. Arukalam, I. O. (2014). Durability and synergistic effects of KI on the acid corrosion inhibition of mild steel by hydroxypropyl methylcellulose, Carbohydrate Polymer. International Journal of Material Science. 112, 291–299.
40. Begum, A. S. Mallika, J. and Gayathri, P. (2010. Corrosion Inhibition Property of Some 1, 3, 4- Thiadiazolines on Mild Steel in Acidic Medium. European Journal of Chemistry. 58, 132–144.
41. Abd El-Rehim, S. S., Magdy, A. Ibrahim, M. and Khaled, F. (1999). 4-Aminoantipyrine as an inhibitor of mild steel corrosion in HCl solution. Journal of Applied Electrochemistry. 29 (5), 593-599.
42. Geary W. J. (1971). The use of conductivity measurements in organic solvents for characterization of coordination compounds. Coordination Chemistry Review. 7 (1), 81-122.
43. Weaver G. W., Elsegood M. R., Tariq M., Amina M. (2016); synthesis and characterization of new Schiff base transition metal complexes derived from drug together with biological potential. Journal of Nuclear Medicine and Radiation Therapy 7 (6), 1-4.
44. Boghaei, D. M., Askarizadeh, E., & Bezaatpour, A. (2008). Synthesis, characterization, spectroscopic and thermodynamic studies of charge transfer interaction of a new water-soluble cobalt (II) Schiff base complex with imidazole derivatives. Spectrochim Acta A Mol Biomol Spectrosc. 69 (2), 624–628.
45. Shaker, A. M., Nassr, L. A. E and Adam, M. S. S. (2013). Hydrophilicity and acid hydrolysis of water-soluble antibacterial iron (II) Schiff base complexes in binary aqueous solvents. Russian Journal of General Chemistry. 83, 2460–2464.
46. Aupers, J. H., Chohan, Z. H., Cox, P. J., Doidge-Harrison, S. M. S. V., Howie, A., Khan, A., Spencer, G. M., & Wardell, J. L. (1998). Syntheses and structures of diorgano (halo- orpseudohalo-) (1,3-dithiole-2-thione-4,5-dithiolato)-stannates (1-), [Q][R2SnX (dmit)] (Q=onium cation; X=halide orpseudohalide). Polyhedron. 17: (25–26).
47. Chohan, Z. H., Wardell, J. L., Low, J. N., Meehan, P. R., & Ferguson, G. (1998). Tetraethylammoniumbromo (1,3-dithiol-2-one-4,5-dithiolato) diethylstannate (1-). Acta Crystallographica Section C: Crystal Structure Communications. 54 (10), 345-366.
48. Selwood, P. W. (1956). Magnetochemistry, Interscience. chapter 2, p-78.
49. Bertini, I. (2009). (Ed.). Inorganic and Bio-Inorganic Chemistry-Vulume II (Vol. 6).; EOLSS Publications.
50. Nair, M. S., Arish, D., & Joseyphus, R. S. (2012). Synthesis, characterization, antifungal, antibacterial and DNA cleavage studies of some heterocyclic Schiff base metal complexes. Journal of Saudi Chemical Society. 16 (1), 83–88.
51. Chohan, A. H., Che-Ani, A. I., Tahir, M. M., Abdullah, N. A. G., Tawil, N. M., and Kamaruzzaman, S. N. (2011). Housing and analysis of design defects: A post occupational evaluation of private housing in Malaysia. International Journal of Physical Sciences. 6 (2), 193–203.
52. Alias, M., Kassum, H., and Shakir, C. (2014). Synthesis, physical characterization and biological evaluation of Schiff base M (II) complexes. Journal of the Association of Arab Universities for Basic and Applied Sciences. 15 (1), 1002-1016.
53. Ferraro, J. R. (1971). Metal Halide Vibrations. In Low-Frequency Vibrations of Inorganic and Coordination Compounds. Springer, Boston, MA. 111-189.
54. Nakamoto K. (2009). Infrared and Raman spectra of inorganic and coordination compounds, part B: applications in coordination, organometallic, and bioinorganic chemistry. John Wiley & Sons.
55. Tandon, J. P., Crowe, A. J., & Road, F. (1986). Synthesis and Structural Studies of Tin (II) Complexes of Semicarbazones and Thiosemicarbazones. Polyhedron, 5 (3), 739–742.
56. Eddy, N. O., Awe, F. E., Gimba, N. O. and Ebenso, E. E. (2011). Inhibitive effect of Prosopis cineraria on mild steel in acidic media. International Journal of Electrochemical Science. 6, 920–931.
57. Okoronkwo, A. E., Olusegun, S. J. and Olaniran, O. (2015). Acid extract of Gliricidia sepium leaves as green corrosion inhibitor for mild steel in HCl solutions. African corrosion Journal. 1: 30–35.
58. Ugi B. U, Obeten M. E. Bassey V. M. Boekom E. J, Omaliko E. C, Ugi F. B, Uwah I. E. (2021). Quantum and electrochemical studies of corrosion inhibition impact on industrial structural steel (E410) by expired amiloride drug in 0.5 M solutions of HCl, H2SO4 and NaHCO3. Moroccan Journal of Chemistry. 9 (4), 677–696.
59. Ejikeme, P. M, Umana, S. G, Menkiti, M. C. and Onukwuli, O. D. (2015). Inhibition of mild steel and aluminum corrosion in 1M H2SO4 by leaves extract of African breadfruit. International Journal of Material Science. 5 (1), 14-23.
60. Aouniti, H., Elmsellem, A., Tighadouini, S., Elazzouzi, M., Radi, S., Chetouani, A., Hammouti, B., and Zarrouk, A. (2016). Schiff's base derived from 2-acetyl thiophene as corrosion inhibitor of steel in acidic medium. Journal of Taibah University for Science. 10 (5), 774-785.
61. Charles, A., Sivaraj, K., and Thanikaikarasan, S. (2020): “Synthesis, characterization and corrosion studies of Schiff bases derived from pyrrole- 2-carbaldehyde”, Materials Today Proceedings. 4, 157–183.
62. El-Tabesh, R. N., Abdel-Gaber, A. M., Hammud, H. H., & Al-Oweini, R. (2020). Correction to: Effect of Mixed-Ligands Copper Complex on the Corrosion Inhibition of Carbon Steel in Sulfuric Acid Solution. Journal of Bio- and Tribo-Corrosion, 6 (2), 467-488.
63. Gupta, N. K., Verma, C., Quraishi, M. A., and Mukhrajee, A. K. (2016): “Schiff's Base Derived from L-lysine and Aromatic Aldehydes as Green Corrosion Inhibitors for Mild Steel: Experimental and theoretical studies”, Journal of Molecular Liquids. 15, 47–57.
64. Anupama, K. K. (2015). Corrosion inhibition study of medicinal plant extracts and some of their components for mild steel in acid media. M. Sc Thesis, Department of Chemistry, University of Calicut. 6, 997-1015.
65. Guo, L; Safi, ZS; Kaya, S; Shi, W; Tuzun, B; Altunay, N; Kaya, C (2018). Anticorrosive effects of some thiophene derivatives against the corrosion of iron: a computational study. Frontier Chemistry Journal, 6 (5): 15-26.
66. Solomon, M. M and Umoren, S. A. (2015). Electrochemical and gravimetric measurements of inhibition of aluminum corrosion by poly (methacrylic acid) in H2SO4 solution and synergistic effect of iodide ions. Journal of Adhesion Science Technology. 76: 104–116.
67. Ituen, E. B., Onyewuchi, A. and Abosede, J. (2017). Evaluation of Performance of Corrosion Inhibitors Using Adsorption Isotherm Models: An Overview. Chemical Science International Journal, 18 (1), 1-34.
68. Oguzie, E. E. (2007). Corrosion inhibition of aluminum in acidic and alkaline media by Sansevieria trifasciata extract. Corrosion Science Journal. 49, 1527–1539.
69. Ebenso, E. E. (2004). Effect of halide ions on the corrosion inhibition of mild steel in H2SO4 using methyl red. Bulletin of Electrochemisry. 19 (5): 209-216.
70. Erdogan, S; Zaki, SS; Kaya, S; Isin, DÖ; Guo, L; Kaya, C (2017). A computational study on corrosion inhibition performances of novel quinoline derivatives against the corrosion of iron. Journal of Molecular Structure, 1134: 751-761.
71. Loto, C. A. (2011). Inhibition effect of tea (Camellia Sinensis) extract on the corrosion of mild steel in dilute sulphuric acid. Journal of Materials and Environmental Science. 2, 335–344.
72. Ikeuba, A. I., Zhang, B., Wamg, J. and Okafor, P. C. “SVET and SIET (2018). Study of Galvanic corrosion of Al/MgZn2 in aqueous solutions at different PH”. Journal of the Electrochemical Society. 165, 1043-1049.
73. Atkins, P. and Julio, D., (2010). Atkins’ Physical Chemistry. 9th ed. Oxford University Press, Great Clarendon Street, Oxford, Ox2 6DP. United State, 685.
74. Okafor, P. C., Ebiekpe, V. E., Azike, C. F., Egbung, G. E., Brisibe, E. A., and Ebenso E. E.. Inhibitory Action of Artemisia annua Extracts and Artemisinin on the Corrosion of Mild Steel in H2SO4 Solution. International Journal of Corrosion. 2012; 20 (6), 8–19.
75. Obot, I. B, Obi-Egbedi, N. O. and Umoren, S. A., (2012). Adsorption Characteristics and Corrosion Inhibitive Properties of Clotrimazole for Aluminium Corrosion in Hydrochloric Acid. International Journal of Electrochemical Science. 4, 863–877.
76. Ekuma, F. K., Odoemelam, S. A., Ekanem, U. I. and Okoyeagu, A. (2018). Synthesized Schiff bases from linoleic and benheric acids as inhibitor of mild steel corrosion in HCl medium. Research Journal of Chemical Sciences. 8 (9), 12–25.