Inhibition activity of ethyleneglycol and its oligomers on tin electrode

Voltammetry and electrochemical impedance spectroscopy were applied to investigate the inhibition activity of ethyleneglycol and its oligomers on tin electrode in strong acidic sulfate solutions. Tetraethyleneglycol was found to be the most active substance among compounds HO–(CH2–CH2–O)m–H (m≤4) th...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2007-01, Vol.11 (1), p.65-70
Main Authors: Survila, Arvydas, Bražinskienė, Dalia
Format: Article
Language:English
Subjects:
Diffusion rate
Electrochemical impedance spectroscopy
Electrodes
Molecular chains
Oligomers
Polyethers
Tin
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Summary:Voltammetry and electrochemical impedance spectroscopy were applied to investigate the inhibition activity of ethyleneglycol and its oligomers on tin electrode in strong acidic sulfate solutions. Tetraethyleneglycol was found to be the most active substance among compounds HO–(CH2–CH2–O)m–H (m≤4) that retards diffusion-controlled Sn(II) reduction due to its inhibitive adsorption. This rather slow process is controlled both by diffusion and electrosorption steps. A comparison of exchange current densities obtained in the presence of different polyethers shows that the length of the hydrocarbon chain is the main factor responsible for inhibition activity of such substances on tin electrode.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-005-0070-2