标题：Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations
作者：Feng, Yuanyuan; Chen, Shenhao; You, Jinmao; Guo, Wenjuan
作者机构：[Feng, Yuanyuan; Chen, Shenhao; Guo, Wenjuan] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China.; [Feng, Yuanyuan; You, Jinmao] Qufu Normal Un 更多
会议名称：10th International Symposium on Polymer Electrolytes
会议日期：OCT 15-19, 2006
关键词：alkylamine; iron; electrochemical impedance spectroscopy (EIS); FT-IR;; molecular simulation
摘要：Alkylamine were used to form self-assembled films for the inhibition of the corrosion of iron in 0.5 M H2SO4 solution. The films were characterized by electrochemical impedance spectroscopy (EIS) and surface analysis techniques including SEM and FT-IR. EIS results indicate that the inhibition ability of these alkylamine self-assembled films depends on the immersion time and the alky chain length of the adsorbate. Both longer immersion time of the electrode in the solution and longer alky chain will result in stronger inhibition ability of the films. However, when the immersion time was increased over some critical point, the inhibition ability was almost invariable. Also when the chain length reached a certain degree such as 14 carbon atoms, the inhibition ability decreased on the contrary. The ability of the corrosion inhibition of the tetradecylamine and dodecylthiol mixed films improved remarkably comparing with the tetradecylamine or dodecylthiol single films. In addition, molecular simulation was used to discuss the adsorption mechanism and good agreement with electrochemical results was obtained. (c) 2007 Elsevier Ltd. All rights reserved.