Self-assembled monolayers of stearic imidazoline on copper electrodes detected using electrochemical measurements, XPS, molecular simulation and FTIR
被引:10
作者:
Liu Xiuyu
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机构:
Shandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
Shandong Univ, Dept Chem, Jinan 250100, Peoples R ChinaShandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
Liu Xiuyu
[1
,2
]
Ma Houyi
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机构:
Shandong Univ, Dept Chem, Jinan 250100, Peoples R ChinaShandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
Ma Houyi
[2
]
Miao Shuai
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Shandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R ChinaShandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
Miao Shuai
[1
]
Zhou Min
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机构:
Shandong Univ, Dept Chem, Jinan 250100, Peoples R ChinaShandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
Zhou Min
[2
]
机构:
[1] Shandong Acad Sci, New Mat Inst, Jinan 250014, Peoples R China
[2] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China
A type of imidazoline inhibitor was synthesized using stearic acid and diethylenetriamine (DETA) as raw materials. Self-assembled monolayers (SAMs) of stearic imidazoline (IM) were prepared on copper surface. The copper electrode modified by IM was detected by electrochemical impedance spectros-copy (EIS), Tafel polarization curves, X-ray photoelectron spectroscopy (XPS) and Fourial transform reflection spectroscopy (FTIR). The biggest inhibition efficiency for copper corrosion of IM was 99% in NaCl solution according to EIS results. The XPS results provided evidence that the IM was adsorbed on copper surface. The theoretical calculations of molecular simulation supported the experimental results and showed that the IM molecules were tilted at an angle to the copper surface.