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In situ SERS study of the adsorption of inhibitors of carbon dioxide corrosion
Author(s) -
Durnie William H.,
De Marco Roland,
Jefferson Alan,
Kinsella Brian J.
Publication year - 2003
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1567
Subject(s) - adsorption , corrosion , electrochemistry , polarization (electrochemistry) , in situ , electrode , raman spectroscopy , carbon steel , chemistry , surface enhanced raman spectroscopy , corrosion inhibitor , carbon dioxide , chemical engineering , inorganic chemistry , materials science , raman scattering , organic chemistry , optics , physics , engineering
A specially designed electrochemical cell incorporating a rotating disc electrode has been used for in situ surface‐enhanced Raman spectroscopy (SERS) studies of the adsorption of inhibitors of carbon dioxide corrosion onto silver‐coated mild steel electrodes. It is shown that SERS‐active inhibitors comprising aromatic moieties may be detected using the SERS technique. Furthermore, the efficacy of adsorption of corrosion inhibitors employed in the present study is optimal near the open cell or corrosion potential, demonstrating that electrode polarization induces electrostatic forces of repulsion that retard the adsorption of the inhibitor to the corroding steel surface. Copyright © 2003 John Wiley & Sons, Ltd.