Статья

Prolonged corrosion protection via application of 4-ferrocenylbutyl saturated carboxylate ester derivatives with superior inhibition performance for mild steel

Hajar JamaliOrganic Synthesis Research Laboratory, Department of Organic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, IranSaleh Moradi‐AlavianElectrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, IranElnaz AsghariElectrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. [email protected]Mehdi D. EsrafiliLaboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, IranElmira PayamiOrganic Synthesis Research Laboratory, Department of Organic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, IranReza Teimuri‐MofradOrganic Synthesis Research Laboratory, Department of Organic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. [email protected]

2024en

ABI

Аннотация

Abstract A series of 4-ferrcenylbutyl carboxylate esters with different alkyl chain length (C 2 -C 4 ) of carboxylic acids were synthesized using Fe 3 O 4 @SiO 2 @(CH 2 ) 3 -Im-bisEthylFc[I] nanoparticles as catalyst and have been characterized with FT-IR, 1 H NMR, and 13 C NMR. Ferrocenyl-based esters were used as corrosion inhibitors of mild steel in the 1M HCl solution as corrosive media. The corrosion inhibition efficiency of the synthesized ferrocenyl-based esters has been assessed by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), atomic force microscopy (AFM), and scanning electron microscopy (SEM). The 4-ferrocenylbutyl propionate showed a more effective corrosion inhibition behavior among the studied esters with 96% efficiency after immersion in the corrosive media for 2 weeks. The corrosion inhibition mechanism is dominated by formation of passive layer of inhibitor on the surface of the mild steel by adsorption. Moreover, the adsorption characteristics of 4-butylferrcenyl carboxylate esters on mild steel were thoroughly explored using density functional theory calculations. It was found that the Fe atoms located around the C impurity in the mild steel are the most efficient and active sites to adsorb 4-butylferrcenyl carboxylate esters.

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Идентификаторы

DOI: 10.1038/s41598-024-64471-0

Цитирования и источники

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