Experimental and Theoretical Study of Corrosion Inhibition of Mild Steel in 1.0 M HCl Medium by 2(-4( hloro phenyl-1H- benzo[d]imidazol)-1-yl)phenyl)methanone

Experimental and Theoretical Study of Corrosion Inhibition of Mild Steel in 1.0 M HCl Medium by 2(-4( hloro phenyl-1H- benzo[d]imidazol)-1-yl)phenyl)methanone

The 2(-4(chloro phenyl-1H- benzo[d]imidazol)-1-yl)phenyl)methanone (CBIPM) was synthesized and tested as a corrosion inhibitor for mild steel in 1.0 M HCl solution using electrochemical and spectroscopy measurements. Results obtained showed that this compound has a good inhibition properties for mil...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) Vol. 21; no. 6
Main Authors: Fergachi, Omar, Benhiba, Fouad, Rbaa, Mohamed, Touir, Rachid, Ouakki, Moussa, Galai, Mohsine, Lakhrissi, Brahim, Oudda, Hassan, Touhami, Mohamed Ebn
Format: Journal Article
Language:English
Published: ABM, ABC, ABPol 01-01-2018
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:
Acidic medium
CBIPM
Corrosion inhibition
DFT method
Electrochemical and spectroscopy measurements
ENGINEERING, CHEMICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
CBIPM
Corrosion inhibition
Electrochemical and spectroscopy measurements
Acidic medium
DFT method
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Summary:The 2(-4(chloro phenyl-1H- benzo[d]imidazol)-1-yl)phenyl)methanone (CBIPM) was synthesized and tested as a corrosion inhibitor for mild steel in 1.0 M HCl solution using electrochemical and spectroscopy measurements. Results obtained showed that this compound has a good inhibition properties for mild steel corrosion in acidic medium which its inhibition efficiency value reaches 98.9 % at 10-3 M. So, the potentiodynamic polarization curves showed that the CBIPM has a mixed type inhibitor. In addition, it is shown that the obtained results were confirmed by the UV-vis spectroscopic measurements. It is found that the inhibitor forms a complex with Fe2+ ion. On the other hand, the experimental results were completed by quantum chemical calculations using DFT method at the B3LYP/6-31G* level of theory. It is found that the theoretical and experimental results are in good agreement.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2017-1038