The self-assembled films of tetradecylamine were formed on iron surface,and the inhibition ability of which for iron corrosion in 0.5 mol/L H2SO4 solutions was studied by electrochemical impedance spectroscopy technique.Results indicated that longer immersion time would result in stronger inhibition ability of the films.The maximal inhibition efficiency(IE) of the tetradecylamine films was 68.7%.When the tetradecylamine films were modified by dodecylthiol,the mixed films became denser and more stable,thus the inhibition ability increased remarkably.The η of the mixed films increased to 78.2%.


iron, self-assembled films, corrosion inhibition, electrochemical impedance spectroscopy

Publication Date


Online Available Date


Revised Date


Received Date



[1]Dong S J(董绍俊),Che G L(车广礼),Xie Y W(谢远武).Chemically modified electrodes[M].Beijing:Sci-ence Press,2003.571.
[2]Ulman A.Formation and structure of self-assembled mon-olayers[J].Chem Rev,1996,96:1533-1554.
[3]Dong J H(董俊华),Song G L(宋光铃),Cao C N(曹楚南),et al.Study of corrosion inhibition of thiourea andit`s derivatives on iron[J].Acta Phys-Chim,1996,12(3):252-258.
[4]Ma HY,Yang C,Chen S H,et al.Electrochemical in-vestigation of dynamic interfacial processes at 1-octade-canethiol-modified copper electrodes in halide-containingsolutions[J].Electrochim Acta,2003,48:4277-4289.
[5]Mccafferty E.On the determination of distributed double-layer capacitances from cole-cole plots[J].Corros Sci,1997,39:243-254.
[6]Khaled KF,Hackerman N,Investigation of the inhibitiveeffect of ortho-substituted anilines on corrosion of iron in0.5 M H2SO4solutions[J].Mater Chem Phys,2003,82:949-960.
[7]Guo W J,Chen S H,Feng Y Y,et al.Investigations oftriphenyl phosphate and bis-(2-ethylhexyl)phosphateself-assembled films on iron surface using electrochemicalmethods Fourier transform infrared spectroscopy,and mo-lecular simulations[J].J Phys Chem C,2007,111:3109-3115.
[8]Maranha~o S L A,Guedes I C,Anaissi F J,et al.Elec-trochemical and corrosion studies of poly(nickel-tet-raaminophthalocyanine)on carbon steel[J].ElectrochimActa,2006,52:519-526.
[9]Ma HY,Cheng X L,Li G,et al.The influence of hy-drogen sulfide on corrosion of iron under different condi-tions[J].Corros Sci,2000,42:1669-1683.
[10]Guo W J,Chen S H,Huang B D,et al,Protection ofself-assembled monolayers formed from triethyl phos-phate and mixed self-assembled monolayers from triethylphosphate and cetyltrimethyl ammonium bromide for cop-per against corrosion[J].Electrochimica Acta,2006,(52):108-113.
[11]Zhang H P,Romero C,Baldelli S,Preparation of al-kanethiol monolayers on mild steel surfaces studied withsum frequency generation and electrochemistry[J].JPhys Chem B,2005,109:15520-15530.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.