Self-formation of protective layer on carbon steel surface in 1 M HCl solution containing Barringtonia acutangula leaf extract

Tran, Thanh-Nha; Tran, Thien Tri; Jo, Deok Su; Dong, Phan-Si-Nguyen; Nguyen, Van-Kieu; Huynh, Thanh Liem; Nguyen Dang, Nam

doi:10.1016/j.jiec.2024.01.030

Cited by 1 publication

(1 citation statement)

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“…According to AFM data, in presence of 6b inhibitor a smooth surface was obtained and surface of mild steel covered by inhibitor that is indicate formation of protective layer on the surface of metal 50 , 51 . The corrosion of mild steel in absence of inhibitor caused to increase surface roughness parameters values 1 .…”

Section: Resultsmentioning

confidence: 95%

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

Jamali,

Moradi-Alavian,

Asghari

et al. 2024

Sci Rep

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A series of 4-ferrcenylbutyl carboxylate esters with different alkyl chain length (C2-C4) of carboxylic acids were synthesized using Fe3O4@SiO2@(CH2)3-Im-bisEthylFc[I] nanoparticles as catalyst and have been characterized with FT-IR, 1H NMR, and 13C 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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Section: Resultsmentioning

confidence: 95%