Acetohydroxamic acid adsorbed at copper surface: electrochemical, Raman and theoretical observations

International Journal of Industrial Chemistry

دوره 8، شماره 3، آذر 2017، صفحه 285-296

نوع مقاله: research article

شناسه دیجیتال (DOI): https://doi.org/10.1007/s40090-017-0111-6

نویسندگان

Juan Du؛ Ye Ying^* ؛ Xiao-yu Guo؛ Chuan-chuan Li؛ Yiping Wu؛ Ying Wen؛ Hai-Feng Yang^*

The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, People’s Republic of China

چکیده

Corrosion inhibition effect of AHA film formed on the copper surface by self-assembled monolayers technique was estimated in 3 wt% NaCl solution by electrochemical impedance spectroscopy and polarization methods. Polarization data indicated that AHA was an anodic inhibitor. The maximum inhibition efficiency reached 93.5% in the case of assembly 3 h in 10 mM AHA solution. The adsorption of AHA on the copper surface fits Langmuir adsorption isotherm. Surface-enhanced Raman scattering together with quantum chemical studies demonstrated that N–O and C=O groups were attached to the copper surface, predicting the feasible adsorption centers and confirming the relationship between the molecular structures of AHA and its inhibition property.

کلیدواژه‌ها

Acetohydroxamic acid؛ EIS؛ Polarization؛ SERS؛ Anodic inhibitor