Title :

The inhibition of mild steel corrosion in acidic solutions by 2,5-bis(4-pyridyl)-1,3,4-thiadiazole: Structure–activity correlation

Author(s) :

Lebrini, Mounim [Auteur]
Ecole Nationale Supérieure de Chimie de Lille [ENSCL]
Bentiss, Fouad [Auteur]
Université Chouaib Doukkali [UCD]
Vezin, Hervé [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Lagrenée, Michel [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Corrosion Science

Abbreviated title :

Corrosion Science

Volume number :

48

Pages :

1279-1291

Publisher :

Elsevier BV

Publication date :

2006-05

ISSN :

0010-938X

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

The effect of 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (4-PTH) on the corrosion of mild steel in acidic media (1 M HCl, 0.5 M H2SO4, 1 M HClO4) has been investigated using weight loss measurements, electrochemical impedance ...
Show more >The effect of 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (4-PTH) on the corrosion of mild steel in acidic media (1 M HCl, 0.5 M H2SO4, 1 M HClO4) has been investigated using weight loss measurements, electrochemical impedance spectroscopy and potentiodynamic polarisation. These studies have shown that 2,5-bis(4-pyridyl)-1,3,4-thiadiazole is good inhibitor for mild steel in 1 M HCl, 0.5 M H2SO4 and 1 M HClO4 solutions, the better performances are seen in the case of 1 M HCl solutions. But in 1 M HClO4, the 4-PTH stimulates corrosion at low concentrations. Polarisation curves indicate that the 4-PTH is a mixed-type inhibitor in all acidic media and E (%) is temperature-dependent. Adsorption on the mild steel surface follows the Langmuir isotherm model in all acidic media. The electronic properties obtained using the Hartree–Fock AB initio 3-21G quantum chemical approach, were correlated with the experimental efficiencies.Show less >

Audience :

Internationale

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Submission date :

2021-06-18T09:18:07Z
2021-10-13T08:33:55Z
2021-10-13T08:38:13Z