摘要
用电化学极化和电化学阻抗方法研究3%NaCl溶液中苯丙氨酸和色氨酸复合自组装膜对铜的保护作用,通过荧光分析法讨论了复合自组装膜中苯丙氨酸与色氨酸之间的相互作用。结果表明,两种氨基酸对铜均有一定的保护效果,但复合自组装膜相互之间存在拮抗作用,影响了氨基酸自组装膜的保护效率。
The mixed self-assembled films of phenylalanine（Phe） and tryptophan（Trp） were prepared on the copper surface.Their inhibition effect for copper corrosion in 3%NaCl solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy.Interaction between phenylalanine and tryptophan was studied using fluorescence analysis.The results showed both Phe-SAMs and Trp-SAMs have protection effect for copper.They rendered the corrosion potential to a positive shift.There was an antagonism between phenylalanine and tryptophan in the mixed SAMs.Photoinduced electron transfer in the mixed SAMs was verified by fluorescence emission.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2012年第2期163-167,共5页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金项目(20776083
20911140272)
教育部新世纪优秀人才项目(NCET-08-0895)资助
关键词
氨基酸
自组装
荧光分析
极化
阻抗
amino acid
self-assembled
fluorescence analysis
polarization
impedance
