半胱氨酸表面修饰的层状双金属氢氧化物薄膜对铜的缓蚀性能  

Investigations on the Inhibition Property of Cysteine Surface Modified by Layered Double Hydroxides Films on Copper Surfaces

作　　者：张昕[1] 全贞兰[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2011年第4期356-360,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：以层状双金属氢氧化物(LDHs)为主体,半胱氨酸(Cys)为修饰剂,制备Cys表面修饰LDHs(Cys-LDHs),之后利用胶体沉积技术在铜表面制备Cys-LDHs薄膜。采用电化学阻抗谱(EIS)、极化曲线的方法研究修饰前后LDHs薄膜在质量分数3.5%NaCl溶液中对铜的缓蚀性能。结果表明,2种LDHs薄膜对铜均具有良好的缓蚀效果,且Cys-LDHs薄膜的缓蚀效果更佳,缓蚀效率可达91.4%。In this paper,LDHs were modified with cysteine（Cys） to prepare Cys-LDHs.The Cys-LDHs film was prepared on copper surfaces by a colloid deposition technique.The corrosion inhibition of the formed film was studied by electrochemical impedance spectroscopy（EIS） and polarization curves.All results demonstrate that both LDHs and Cys-LDHs films could inhibit the corrosion of copper,and the Cys-LDHs films showed significantly higher inhibition efficiency,reaching 91.4%.

关 键 词：表面修饰 LDHs薄膜 缓蚀 铜 

分 类 号：TQ13[化学工程—无机化工]