SciELO - Scientific Electronic Library Online

 
vol.27 número5Optical Properties of [all]-S,S-Dioxide OligothiophenesStainless Steel Electrodeposited with Zinc is not Good for Storing Thiourea Solution índice de autoresíndice de assuntosPesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Portugaliae Electrochimica Acta

versão impressa ISSN 0872-1904

Port. Electrochim. Acta v.27 n.5 Coimbra  2009

 

Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution

Ime B. Obot *

1 Department of Chemistry, Faculty of Science, University of Uyo, Uyo, Nigeria

 

Received 13 February 2009; accepted 21 October 2009

 

Abstract

The corrosion rates in the presence of nizoral (NZR), an antifungal drug, as mild steel corrosion inhibitor in 0.1 M H2SO4 was measured by the weight loss method in the temperature range from 30 – 50 oC. Results obtained revealed that NZR acts as an inhibitor for mild steel in sulphuric acid solution. Inhibition efficiency increased with increase in concentration of the inhibitor but decreased with increase in temperature. The addition of KI increased the inhibition of NZR to a considerable extent. The experimental results suggest that the presence of iodide ions in the solution stabilized the adsorption of Nizoral molecules on the mild steel surface thereby improving the inhibition efficiency of Nizoral. The adsorption characteristics of the inhibitor were approximated by Langmuir adsorption isotherm and kinetic/thermodynamic adsorption model of El-Awady et al. Mechanism of physical adsorption is proposed from the activation and thermodynamic parameters calculated.

Keywords: nizoral, mild steel, corrosion inhibition, adsorption isotherm, thermodynamics, sulphuric acid.

 

Full text only in PDF format

Texto disponível em PDF

 

References

1. T. Hong, W.P. Jepson, Corros. Sci. 43 (2001) 1839.

2. S.A. Umoren, I.B. Obot, Surf. Rev. & Lett. 15(3) (2008) 277.

3. U. Ergun, D. Yuzer, C. Emregul, Mater. Chem. & Phys. 109 (2008) 492.

4. H. Ju, Y. Li, Corros Sci. 49 (2007) 4185.

5. G.Y. Elewady, I.A. El-Said, A.S. Fouda, Int. J. Electrochem. Sci. 3 (2008) 644.

6. W. Li, G. He, C. Pei, B. Hou, Electrochim. Acta 52 (2007) 6386.

7. I.B. Obot, N.O. Obi-Egbedi, S.A. Umoren, Corros. Sci. 51 (2009) 1869

8. M. Benabdellah, R. Touzani, A. Aouniti, A. Dafali, S. El-Kadiri, B. Hammouti, M. Benkaddour, Mater. Chem. & Phys. 105 (2007) 373.

9. M. Lebrini, F. Bentiss, H. Vezin, M. Lagrenee, Corros. Sci. 48 (2006) 1279.

10. M. Bouklah, N. Benchat, B. Hammouti, A. Aouniti, S. Kertit, Mater. Lett. 60 (2006) 1901.

11. S.A. Umoren, I.B. Obot, E.E. Ebenso, E-Journal of Chemistry 5(2) (2008) 355.

12. G.K. Gomma, Asian J. Chem. 5(3) ( 1993) 761.

13. G.K. Gomma, Mater. Chem. & Phys. 54 (1998) 241.

14. S.A. Umoren, O. Ogbobe, E.E. Ebenso, U.J. Ekpe, Pigment Resin Technol. 35 (3) (2006) 284.

15. I.B. Obot, N.O. Obi-Egbedi, S.A. Umoren, Corros. Sci. 51 (2009) 276.

16. M. Abdallah, Corros. Sci. 44 (2002) 728.

17. M. Abdallah, Corros. Sci. 46 (2004) 1996.

18. M.M. El-Naggar, Corros. Sci. 49 (2007) 2226.

19. A.S. Fouda, A.A. Al-Sarawy, F. Sh-Ahmed, H.M. El-Abbasy, Corros. Sci. 51(3) (2009) 485.

20. R. Solmaz, G. Kardas, B. Yazici, M. Erbil, Protection of Metals 41(6) (2005) 581.

21. E.E. Ebenso, N.O. Eddy, A.O. Odiongeyi , Port. Electrochimica Acta 27(1) (2009) 13.        [ Links ]

22. S.A. Odoemelam, E.C. Ogoko, B.N. Ita, N.O. Eddy, Port. Electrochimica Acta 27 (2009) 57.        [ Links ]

23. T. Arslan, F. Kandemirli, E.E. Ebenso, I. Love, H. Alemu, Corros. Sci. 51 (2009) 35.

24. S.K. Shukla, A.K. Singh, I. Ahmed, M.A. Quraishi, Mater. Lett. 63 (2009) 819.

25. N.O. Eddy, U.J. Ibok, E.E. Ebenso, A. El Nemr, E.S.H. El Ashry, J. Mol. Mod. (2009) doi: 10.1007/s 00894–009–04–72–7).

26. I.B. Obot, N.O. Obi-Egbedi, Colloids & Surf. A. Physico.& Engr. Asp. 330 (2-3) (2008) 207.

27. E.E. Ebenso, T. Arslan, F. Kandemirli, N. Caner, I. Love, Int. J. Quantum Chem (2009) Quantum chemical studies of some rhodanine azosulpha drugs as corrosion inhibitors for mild steel in acidic medium ( in press).

28. N.O. Eddy, S.A. Odoemelam, J. Mat. Sci. 4 (2008) 87.

29. N.O. Eddy, S.A. Odoemelam, P. Ekwumengbo, Sci. Res. Essays 4(1) (2009) 33.

30. N.O. Eddy, S.A. Odoemelam, A.J. Mbaba, Afri. J. Pure & Appl. Chem 2(12) (2008) 132.

31. S.K. Shukla, M.A. Quraishi, J. Appl. Electrochem. (2009) doi: 10.1007/s 10800-009-9834-1.

32. M.N. Mousa, A.S. Fouda, F.I. Taha, A. Elnenna, Bull. Korean Chem. Soc. 9(4) (1988) 191.

33. S.A. Umoren, E.E. Ebenso, Mater. Chem. & Phys. 106 (2007) 387.

34. S.A. Umoren, I.B. Obot, E.E. Ebenso, N.O. Obi-Egbedi, Int. J. Electrochem. Sci. 3 (2008) 1029.

35. E.E. Oguzie, E.E. Ebenso, Pigment Resin Technol. 35 (2006) 30.

36. A.K. Dubey, G. Singh, Portugaliae Electrochimica Acta. 25(2007) 249.        [ Links ]

37. N. Hackerman, E. Snavely Jr., J.S. Payne, J. Electrochem. Soc. 113 (1966) 651.

38. E.E. Oguzie, Corros. Sci. 49 (2007) 1527.

39. E.E. Oguzie, B.N. Okolue, E.E. Ebenso, G.N. Onuoha, A.I. Onuchukwu, Mater. Chem. & Phys. 87 (2004) 394.

40. J. O’M. Bockris, D. Drazic, Electrochim. Acta 7 (1962) 293.

41. M.A. Quraishi, J. Rawat, M. Ajmal, J. Appl. Electrochem. 30 (2000) 745.

42. M. Behpour, S.M. Ghoreishi, N. Soltani, M. Salavati-Niasari, M. Hamadanian, A. Gandomi, Corros. Sci. 50 (2008) 2172.

43. M. Bouklah, B. Hammouti, M. Lagrenee, F. Bentiss, Corros. Sci. 48 (2006) 2831.

44. I. Dehri, M. Ozcan, Mater. Chem. & Phys. 98 (2006) 316.

45. A.S. Fouda, A.A. Al. Sarawy, E.E. El. Katori, Desalination 201 (2006) 1.

46. S.S. Abd El Rehim, M.A.M. Ibrahim, K.F. Khalid, Mater. Chem. Phys. 70 (2001) 270.

47. G.K. Gomma, M.H. Wahdan, Bull. Chem. Soc. Jpn. 67 (1994) 5.

48. S.A. Umoren, E.E. Ebenso, Pigment Resin Technol. 37(3) (2008) 173.

49. L. Larabi, Y. Harek, Portugaliae Electrochimica Acta 22 (2004) 227.        [ Links ]

50. L. Larabi, Y. Harek, M. Traisnel, A. Mansri, J. Appl. Electrochem. 34 (2004) 833.

51. M. Abdallah, E.A. Helal, A.S. Fouda, Corros. Sci. 48 (7) (2006) 1639.

52. G. Schmitt, K. Bedhur, Werkst. Korros. 36 (1985) 273.

53. S.A. Umoren, O. Ogbobe, E.E. Ebenso, Bull. Electrochem. 22(4) (2006) 155.

54. Y. Feng, K.S. Siow, W.K. Teo, A.K. Hsieh, Corros. Sci. 41 (1999) 829.

 

*Corresponding author. E-mail address : proffoime@yahoo.com

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons