The synergistic mechanism of phytic acid monolayers and iodide ions for inhibition of copper corrosion in acidic media

被引：43
作者：
Shen, Shu
Zhu, Cheng-di
Guo, Xiao-yu
Li, Chuan-chuan
Wen, Ying
Yang, Hai-Feng [1 ]
机构：
[1] Shanghai Normal Univ, Educ Minist, Key Lab Resource Chem, Shanghai Key Lab Rare Earth Funct Mat, Shanghai 200234, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 21期
基金：
中国国家自然科学基金;
关键词：
SELF-ASSEMBLED MONOLAYERS; ENHANCED RAMAN-SPECTROSCOPY; SURFACE SELECTION-RULES; AERATED SULFURIC-ACID; MILD-STEEL CORROSION; COLD-ROLLED STEEL; HYDROCHLORIC-ACID; H2SO4; SOLUTIONS; ADSORPTION BEHAVIOR; GEMINI-SURFACTANT;
D O I：
10.1039/c3ra47291d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The adsorption behavior of phytic acid (PA) self-assembled monolayers (SAMs) at the copper surface, and its corrosion inhibition mechanism in 0.5 M H2SO4 solution, was studied by using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and surface-enhanced Raman scattering spectroscopy (SERS). Raman studies showed that PA SAMs on the copper surface formed via P-O bonding and the cyclohexyl ring. The adsorption of PA SAMs on copper surface followed Langmuir isotherm behavior and revealed chemical adsorption on the copper surface. The presence of I- ions with PA SAMs at the copper surface showed a synergistic effect and increased the inhibition efficiency.
引用
收藏
页码：10597 / 10606
页数：10
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