Title :

Citrullus colocynthis fruit extract as effective eco-friendly corrosion inhibitor in a hydrochloric acid pickling medium for carbon steel by using both experimental and theoretical studies

Author(s) :

Tabyaoui, Mohamed [Auteur]
Université Mohammed V de Rabat [Agdal] [UM5]
Tourabi, Mustapha [Auteur]
Faculty of Science - Chouaib Doukkali University
Zarrok, Hassan [Auteur]
Université Ibn Tofaïl [UIT]
Jama, Charafeddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Benhiba, Fouad [Auteur]
Université Mohammed V de Rabat [Agdal] [UM5]
Zarrouk, Abdelkader [Auteur]
Université Mohammed V de Rabat [Agdal] [UM5]
Bentiss, Fouad [Auteur]
Faculty of Science - Chouaib Doukkali University

Journal title :

Environmental Science and Pollution Research

Abbreviated title :

Environ Sci Pollut Res

Volume number :

31

Pages :

43757-43780

Publisher :

Springer Verlag

Publication date :

2024-06-22

ISSN :

0944-1344

English keyword(s) :

Organic corrosion inhibitor
C-S substrate
Acid medium
Gravimetry
Potentiodynamic polarization
AC impedance
XPS
DFT/MD

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

The present study focuses on an environmental approach based on the use of an eco-friendly corrosion inhibitor from the Citrullus colocynthis fruit extract for enhancement corrosion resistance of carbon steel (C-S) in acid ...
Show more >The present study focuses on an environmental approach based on the use of an eco-friendly corrosion inhibitor from the Citrullus colocynthis fruit extract for enhancement corrosion resistance of carbon steel (C-S) in acid medium as an alternative to various organic and non-organic chemical inhibitors. The evaluation of the inhibition properties of the fruit methanolic extract of Citrullus colocynthis (CCE) were performed in molar hydrochloric acid (1 M HCl) medium using gravimetric and electrochemical (potentiodynamic polarization and AC impedance) techniques as well as surface analyses. CCE is rich in amino acids, mainly citrulline and β-(pyrazo-1-yl)-L-analine molecules. Based on the weight loss evaluation, the results demonstrated that this plant extract acts as an effective corrosion inhibitor and a protection level of 93.6% was attained at 500 ppm of CCE after 6 h of metal exposure at 303 K. According to polarization curves, CCE functions as a mixed-type inhibitor. In addition, AC impedance analyses have shown that the incorporation of CCE into the corrosive solution leads to a decrease in load capacity, while improving the charge/discharge function at the interface. This suggests the possibility of the formation of an adsorbed layer on the C-S surface. In addition, scanning electron microscope (SEM) observation, contact angle measurements, and Fourier-transform infrared spectroscopy (FTIR) analyses supported the development of a protective film over CS substrate surface afterwards addition of CCE. Langmuir and/or Temkin isotherms can be used to characterize the adsorption of this organic inhibitor on the C-S surface. X-ray photoelectron spectroscopy (XPS) has revealed that the inhibiting effect of CCE on the corrosion of C-S in 1 M HCl solution is mainly controlled by a chemisorption process and the inhibitive layer is composed of an iron oxide/hydroxide mixture where CCE molecules are incorporated. In order to understand the relationship between the molecular structure and anti-corrosion effectiveness of these inhibitor molecules, quantum chemical studies were carried out using density functional theory (DFT) and molecular dynamics (MD) simulation.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Submission date :

2024-09-03T14:06:32Z
2024-09-04T08:20:48Z