Abstract
The inhibitory action of an extract of Hemidesmus indicus leaves as a potential corrosion inhibitor for steel in H2SO4 solutions was examined using conventional mass loss, gasometric techniques, electrochemical polarisations and electrochemical impedance spectroscopy. The results revealed that the extract of Hemidesmus indicus leaves performed well as an inhibitor for the corrosion of the metal employed in an accelerating medium. The inhibition efficiencies for all the experimental techniques employed increased with increasing the concentration of the plant extract but decreased with a rise in temperature. Both the cathodic hydrogen evolution and the anodic dissolution of mild steel were inhibited, hence the active molecule of the extract studied acted as a mixed-type corrosion inhibitor.
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Abdel-Gaber, A. M., Abd-El-Nabey, B. A., Sidahmed, I. M., El-Zayaday, A. M., & Saadawy, M. (2006). Inhibitive action of some plant extracts on the corrosion of steel in acidic media. Corrosion Science, 48, 2765–2779. DOI: 10.1016/j.corsci.2005.09.017.
Avci, G. (2008). Corrosion inhibition of indole-3-acetic acid on mild steel in 0.5 M HCl. Colloids and Surfaces A: Physicochemical Engineering Aspect, 317, 730–736. DOI: 10.1016/j.colsurfa.2007.12.009.
Bentiss, F., Gassama, F., Barbry, D., Gengembre, L., Vezin, H., Lagrenée, M., & Traisnel, M. (2006). Enhanced corrosion resistance of mild steel in molar hydrochloric acid solution by 1,4-bis(2-pyridyl)-5H-pyridazino[4,5-b]indole: Electrochemical, theoretical and XPS studies. Applied Surface Science, 252, 2684–2691. DOI: 10.1016/j.apsusc.2005.03.231.
Martinez, S., & Štern, I. (2001). Inhibitory mechanism of lowcarbon steel corrosion by mimosa tannin in sulphuric acid solutions. Journal of Applied Electrochemistry, 31, 973–978. DOI: 10.1023/a:1017989510605.
Okafor, P. C., Ebenso, E. E., & Ekpe, U. J. (2004). Inhibition of the acid corrosion of aluminium by some derivatives of thiosemicarbazone. Bulletin of the Chemical Society of Ethiopia, 18, 181–192. DOI: 10.4314/bcse.v18i2.61442.
Okafor, P. C., & Ebenso, E. E. (2007). Inhibitive action of Carica papaya extracts on the corrosion of mild steel in acidic media and their adsorption characteristics. Pigment & Resin Technology, 36, 134–140. DOI: 10.1108/03699420710748992.
Orubite, K. O., & Oforka, N. C. (2004). Inhibition of the corrosion of mild steel in hydrochloric acid solutions by the extracts of leaves of Nypa fruticans Wurmb. Materials Letters, 58, 1768–1772.
Patel, N. S., Jauhari, S., & Mehta, G. N. (2009). Mild steel corrosion inhibition by Bauhinia purpurea leaves extract in 1 N sulphuric acid. The Arabian Journal for Science and Engineering, 34(2C), 61–69.
Patel, N. S., Jauhari, S., & Mehta, G. N. (2010). 1,7′-dimethyl-2′-propyl-1H,3′H-2,5′-bibenzo[d] imidazole as a corrosion inhibitor of mild steel in 1 M HCl. Chemical Papers, 64, 51–55. DOI: 10.2478/s11696-009-0096-5.
Patel, N. S., Jauhari, S., Mehta, G. N., Hammouti, B., Al-Deyab, S. S., & Bouachrine, M. (2012). The effect of 2-aminoquinoline-6-carboxylic acid on the corrosion behavior of mild steel in hydrochloric acid. Journal of Iranian Chemical Society, 9, 635–641. DOI: 10.1007/s13738-012-0081-8.
Patel, N. S., Jauhariad, S., Mehta, G. N., Al-Deyab, S. S., Warad, I., & Hammouti, B. (2013). Mild steel corrosion inhibition by various plant extracts in 0.5 M sulphuric acid. International Journal of Electrochemical Science, 8, 2635–2655.
Prabhu, R. A., Shanbhag, A. V., & Venkatesha, T. V. (2007). Influence of tramadol [2-[(dimethylamino)methyl]-1-(3-methoxyphenyl) cyclohexanol hydrate] on corrosion inhibition of mild steel in acidic media. Journal of Applied Electrochemistry, 37, 491–497. DOI: 10.1007/s10800-006-9280-2.
Ramesh, S. P., Vinod Kumar, K. P., & Sethuraman, M. G. (2001). Extract of andrographis paniculata as corrosion inhibitor of mild steel in acid medium. Bulletin of Electrochemistry, 17, 141–144.
Riggs, O. L., Jr. (1973). Theoretical aspects of corrosion inhibitors and inhibition. In C. C. Nathan (Ed.), Corrosion inhibitors (pp. 2–27). Houston, TX, USA: National Association of Corrosion Engineers.
Saha, A. K., Rahman, R., Shahriar, M., Saha, S. K., Azad, N., & Das, S. (2013). Screening of six ayurvedic medicinal plant extracts for antioxidant and cytotoxic activity. Journal of Pharmacognosy and Phytochemistry, 2(2), 181–188.
Tebbji, K., Bouabdellah, I., Aouniti, A., Hammouti, B., Oudda, H., Benkaddour, M., & Ramdani, A. (2007). N-benzyl-N,N-bis[(3,5-dimethyl-1H-pyrazol-1-yl)methyl]amine as corrosion inhibitor of steel in 1 M HCl. Material Letters, 61, 799–804. DOI: 10.1016/j.matlet.2006.05.063.
Trabanelli, G. (1991). Inhibitors - an old remedy for a new challenge. Corrosion, 47, 410–419. DOI: 10.5006/1.3585271.
Umoren, S. A., Obot, I. B., Ebenso, E. E., Okafor, P. C., Ogbobe, O., & Oguzie, E. E. (2006). Gum arabic as a potential corrosion inhibitor for aluminium in alkaline medium and its adsorption characteristics. Anti-Corrosion Methods and Materials, 53, 277–282. DOI: 10.1108/00035590610692554.
Uhlig, H. H., & Revie, R. W. (1985). Corrosion and corrosion control. New York, NY, USA: Wiley.
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Dedicated to the memory of professor Elemír Kossaczký
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Patel, N.S., Šnita, D. Ethanol extracts of Hemidesmus indicus leaves as eco-friendly inhibitor of mild steel corrosion in H2SO4 medium. Chem. Pap. 68, 1747–1754 (2014). https://doi.org/10.2478/s11696-014-0625-8
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DOI: https://doi.org/10.2478/s11696-014-0625-8