Yıl 2021, Cilt 8 , Sayı 1, Sayfalar 343 - 362 2021-02-28

Corrosion Inhibitive Potentials Of (E)-5-((4-Benzoylphenyl)Diazenyl)-2-Hydroxybenzoic Acid On Mild Steel Surface In 0.5 M HCl- Experimental And DFT Calculations

Justinah AMOKO [1] , Olawale AKİNYELE [2] , Oluwatoba OYENEYİN [3] , Dare OLAYANJU [4]

One of the ways of reducing metal corrosion and its devastating effects is by using organic corrosion inhibitors. This is because of the π-conjugation in their moieties, their ability to donate electrons to the metal’s vacant d-orbitals, and their low lying LUMO orbitals for accepting electrons as well from the metal, all these improve their adsorption on the metal surface. (E)-5-((4-benzoylphenyl)diazenyl)-2-hydroxybenzoic acid (AD4) was synthesized via the coupling reaction of p-aminobenzonephenone and Salicylic acid, characterized via FTIR, UV/Vis, 1H-NMR, and 13C-NMR spectroscopy. The melting point of AD4 is 103oC–106oC indicating that it is thermally stable and pure. Gravimetric and potentiodynamic polarization techniques were employed to obtain the corrosion rates (Cr) and percentage inhibition efficiency (%IE) at different concentrations of the inhibitor and at different temperatures. The thermodynamic parameters like Enthalpy, ∆Hoads, Entropy, ∆Soads and free energy of adsorption (∆Gads) of Adsorption were calculated. The Langmuir adsorption isotherm was used to describe the adsorption of AD4 molecules on mild steel. Quantum mechanical calculations were employed to calculate the electronic properties and global reactivity descriptors of AD4. The theoretical results are broadly consistent with experimental results. From the results obtained AD4 could be used as a corrosion inhibition agent in the oil and gas industries.
Corrosion, Corrosion inhibitors, Adsorption isotherm, Density functional theory, (E)-5-((4-benzoylphenyl)diazenyl)-2-hydroxybenzoic acid
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Birincil Dil en
Konular Fizikokimya
Bölüm Makaleler

Orcid: 0000-0001-6641-7747
Yazar: Justinah AMOKO
Kurum: Adeyemi College of Education, Ondo, Ondo State, Nigeria
Ülke: Nigeria

Orcid: 0000-0002-6705-7656
Yazar: Olawale AKİNYELE
Kurum: Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
Ülke: Nigeria

Orcid: 0000-0001-5709-0244
Yazar: Oluwatoba OYENEYİN (Sorumlu Yazar)
Kurum: Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.
Ülke: Nigeria

Orcid: 0000-0001-8938-807X
Yazar: Dare OLAYANJU
Kurum: Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
Ülke: Nigeria

Teşekkür We would like to thank Adeyemi College of Education and Adekunle Ajasin University for creating enabling environments for this research work.

Başvuru Tarihi : 5 Kasım 2020
Kabul Tarihi : 2 Ocak 2021
Yayımlanma Tarihi : 28 Şubat 2021

Vancouver Amoko J , Akinyele O , Oyeneyin O , Olayanju D . Corrosion Inhibitive Potentials Of (E)-5-((4-Benzoylphenyl)Diazenyl)-2-Hydroxybenzoic Acid On Mild Steel Surface In 0.5 M HCl- Experimental And DFT Calculations. Journal of the Turkish Chemical Society Section A: Chemistry. 2021; 8(1): 343-362.