Insight into the corrosion inhibition mechanism and adsorption behavior of aldehyde derivatives for mild steel in 1.0 M HCl and 0.5 M H2SO4

被引：23

作者：

Lazrak, Jamila ^{[1
]}

Ech-chihbi, Elhachmia ^{[1
]}

Salim, Rajae ^{[1
]}

Saffaj, Taoufiq ^{[2
]}

Rais, Zakia ^{[1
]}

Taleb, Mustapha ^{[1
]}

机构：

[1] Sidi Mohamed Ben Abdellah Univ Fez, Fac Sci Dhar El Mahraz, Dept Chem, Lab Electrochem Modelisat & Environm Engn, Fes, Morocco

[2] Sidi Mohamed Ben Abdellah Univ, Fac Sci & Tech, Lab Appl Chem, Fes, Morocco

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 664卷

关键词：

Adsorption process; Aldehyde derivatives; Chemisorption; Surface morphology; Molecular dynamics simulations; HYDROCHLORIC-ACID SOLUTION; BENZIMIDAZOLE DERIVATIVES; ESSENTIAL OIL; PERFORMANCE; EFFICIENCY; MOLECULES; QSPR; DFT;

D O I：

10.1016/j.colsurfa.2023.131148

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The inhibition effect of dimethylaminocinnamaldehyde (DACA) on the corrosion of mild steel in 1.0 M HCl and 0.5 M H2SO4 solutions was studied by electrochemical techniques and quantum chemical calculation, polari-zation studies revealed that DACA behaves as a mixed-type inhibitor. Electrochemical impedance spectroscopy (EIS) results indicated that DACA is a good inhibitor in 1.0 M HCl and 0.5 M H2SO4 of the steel surface and inhibition efficiency follows the order: H2SO4 >HCl. The adsorption of the studied inhibitor on a mild steel surface follows Langmuir's adsorption isotherm and involved a chemisorption mode. SEM/EDX observations of the electrode surface confirm the existence of a film on the metal surface. Furthermore, DFT calculations revealed that DACA is in good correlation with the experimental results and Molecular dynamics simulations showed a strong interaction between this molecule and the mild steel surface.

引用

页数：14

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