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International Journal of Electrochemical Science · 2023 · IF 1.5

The Drug Domperidone as a Corrosion Inhibitor for X60 Steel in Hydrochloric Acid Solution

Yanxia Liu,Xiuquan Yao,Chunlin Liu,Xiaofang Luo,Chao Guo,Wei Du

Electrochemical and SEM methods were used to study domperidone (DPD) as an organic corrosion inhibitor for X60 carbon steel in 1 M hydrochloric acid solution. The corrosion inhibition rate decreases with increasing corrosion inhibitor concentration. The inhibition efficiency was the highest when 400 mg/L DPD inhibitor was added, showing a type of mixed inhibitor. The adsorption of DPD inhibitor on the steel surface conforms to the Langmuir isotherm as a combination of physical and chemical adsorption. In addition, the adsorption conformation of the inhibitor molecules on the steel surface was analyzed by MD calculations and the adsorption energy was calculated.

CAS / MDL: 57808-66-9

研究领域: 材料科学 · 电化学 · 表面科学

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International Journal of Electrochemical Science · 2023 · IF 1.5

Electrochemical and Theoretical Study of Corrosion Inhibition on X60 Steel in H2SO4 Solution by Omeprazole

Yanxia Liu,Wei Du,Xiuquan Yao,Chunlin Liu,Xiaofang Luo,Lei Guo,Chao Guo

The corrosion inhibition performance of Omeprazole (OMP) on X60 steel in 0.5M H 2 SO 4 solution was studied by electrochemical impedance spectroscopy and electrochemical polarization curves. These tests are complemented by theoretical calculations using molecular dynamics. The corrosion inhibition efficiency increases with the concentration of OMP, a hybrid corrosion inhibitor that adsorbs on X60 steel following the Langmuir adsorption isotherm. The adsorption configuration calculated by molecular dynamics showed that the OMP molecules were arranged in parallel on the surface of X60 steel, which ensured its excellent inhibition performance.

CAS / MDL: 73590-58-6

研究领域: 材料科学 · 电化学 · 理论计算

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Materials · 2023 ·Vol. 16 ·期 14 ·5192 · IF 3.4

Perspectives on Corrosion Inhibition Features of Novel Synthesized Gemini-Fluorinated Cationic Surfactants Bearing Varied Spacers for Acid Pickling of X60-Steel: Practical, and In Silico Calculations

Kamal Shalabi,Hany M. Abd El-Lateef,Mohamed M. Hammouda,Amany M. A. Osman,Ahmed H. Tantawy,Mohamed A. Abo-Riya

Through our present study, three novel Gemini-fluorinated cationic surfactants bearing different spacers (FSG6-2, FSG6-4, and FSG6-6) were synthesized, and their structures were explained via different spectroscopic instruments such as1H,13C, and19F NMR spectra. The surface activity of the as-prepared surfactants was examined. The inhibiting influence of FSG6 molecules on the X60 steel corrosion in the pickling solution (HCl) was examined by diverse methods comprising electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and X-ray photoelectron spectroscopy (XPS) experimentations, and computational calculations. The inhibition effectiveness of FSG6 surfactants followed the order of 93.37% (FSG6-2) < 96.74% (FSG6-4) < 98.37% (FSG6-6) at 2.0 × 10−4M. The FSG6 surfactants function as mixed-type inhibitors, according to PDP investigations. The H2O molecules that adsorbed on the steel interface were substituted with surfactant molecules, and the surfactant’s inhibitory activity is likely caused by the improvement in an adsorptive layer on the steel substrate, as specified by the EIS results. The Langmuir isotherm describes the absorption of FSG6 molecules on the metal surface. The XPS investigations validate the steel interface’s extremely protective nature. The mechanism of interaction between FSG6 molecules with an X60-steel employing the DFT calculations and MC simulations methods was also examined and discussed.Keywords:fluorinated gemini surfactants;inhibition route;adsorption process;surface analysis;computational calculations

研究领域: 材料科学 · 化学工程 · 计算化学

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The Drug Domperidone as a Corrosion Inhibitor for X60 Steel in Hydrochloric Acid Solution

Electrochemical and Theoretical Study of Corrosion Inhibition on X60 Steel in H2SO4 Solution by Omeprazole

Perspectives on Corrosion Inhibition Features of Novel Synthesized Gemini-Fluorinated Cationic Surfactants Bearing Varied Spacers for Acid Pickling of X60-Steel: Practical, and In Silico Calculations