Adsorption kinetics of 4-amino-5-phenyl-4H-1, 2, 4-triazole-3-thiol on mild steel surface

Anees A. Khadom, Ahmed Y. Musa, Abdul Amir H. Kadhum, Abu Bakar Mohamad, Mohd Sobri Takriff

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The adsorption of 4-amino-5-phenyl-4H-1, 2, 4-triazole-3-thiol (APTT) as a corrosion inhibitor on mild steel surface in hydrochloric acid (HCl) solution was studied using the weight loss technique. The surface coverage with the adsorbed APTT was used to calculate the free energy of adsorption, ΔG° ads, of APTT using Bockris-Swinkels isotherm. The dependence of free energy of adsorption, ΔG° ads, on the surface coverage, θ, is ascribed to the surface heterogeneity of the adsorbent. The effect of APTT was discussed from the adsorption model viewpoint. The adsorption of APTT molecules on the surface occurs without modifying the kinetic of corrosion process.

Original languageEnglish
Pages (from-to)221-230
Number of pages10
JournalPortugaliae Electrochimica Acta
Volume28
Issue number4
DOIs
Publication statusPublished - 2010

Fingerprint

Carbon steel
Adsorption
Kinetics
Free energy
Hydrochloric Acid
Corrosion inhibitors
Hydrochloric acid
Adsorbents
Isotherms
4-(amino)-5-phenyl-4H-1,2,4-triazole-3-thiol
Corrosion
Molecules

Keywords

  • Adsorption
  • Corrosion
  • Inhibitor layers
  • Mild steel

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Adsorption kinetics of 4-amino-5-phenyl-4H-1, 2, 4-triazole-3-thiol on mild steel surface. / Khadom, Anees A.; Musa, Ahmed Y.; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar; Takriff, Mohd Sobri.

In: Portugaliae Electrochimica Acta, Vol. 28, No. 4, 2010, p. 221-230.

Research output: Contribution to journalArticle

Khadom, Anees A. ; Musa, Ahmed Y. ; Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar ; Takriff, Mohd Sobri. / Adsorption kinetics of 4-amino-5-phenyl-4H-1, 2, 4-triazole-3-thiol on mild steel surface. In: Portugaliae Electrochimica Acta. 2010 ; Vol. 28, No. 4. pp. 221-230.
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