Arginine self-assembled monolayers against copper corrosion and synergistic effect of iodide ion

作者：Zhang Da Quan^*; He Xian Ming; Cai Qi Rui; Gao Li Xin; Kim Gui Soon

来源：Journal of Applied Electrochemistry, 2009, 39(8): 1193-1198.

DOI：10.1007/s10800-009-9784-7

• Copper
• Self-assembled monolayers
• Arginine
• Iodide ion
• Synergistic effect

Self-assembled monolayers (SAMs) of arginine (Arg) were formed on copper surface. The corrosion protection properties of the Arg SAMs were examined by electrochemical impedance spectroscopy and polarization techniques in 0.5 M HCl solution. The results show that Arg SAMs have limited protection effect. The protective efficiency increased with an increase of self-assembly time and reached maximum protection at 6 h. When iodide ion was added to the Arg-containing solution, the ability of the corrosion inhibition of the mixed SAMs improved significantly. The corrosion protection mechanism of Arg SAMs is discussed based on AM1 quantum-chemical calculations.

• 出版日期2009-8
• 单位上海大学; 上海电力大学