|
|||||
|
|
pH and iodide ion effect on corrosion inhibition of histidine self-assembled monolayer on copper |
|
| Authors: | Da-Quan Zhang Xian-Ming He Li-Xin Gao |
| Affiliation: | a Department of Environment Engineering, Shanghai University of Electric Power, Shanghai 200090, PR China b College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China c Department of Environmental Horticulture, The University of Seoul, Seoul 130-743, South Korea |
| Abstract: | Self-assembled monolayer (SAM) of histidine (His) was prepared on copper surface at various pH values. The effect of KI additives on corrosion protection efficiency of His SAM was also studied. The protection abilities of these films against copper corrosion in 0.5 M HCl aqueous solution were investigated using electrochemical impedance spectroscopy and polarization techniques. The results show that the film formed on the electrode is more stable at pH = 10 than that at other pH values. When the iodide ions were added into the His self-assembly solution (pH = 10), protection efficiency was further improved. The inhibition mechanism has been discussed by quantum chemical calculations. |
| Keywords: | Copper Electrochemical impedance spectroscopy Polarization Acid inhibition Self-assembled monolayers Histidine Corrosion |
| 本文献已被 ScienceDirect 等数据库收录！ | |