In-situ spectroelectrochemical characterization of the electrochemical growth and breakdown of a lead dodecanoate coating on a lead substrate

Michel De Keersmaecker; Mark Dowsett; Rosie Grayburn; Dipanjan Banerjee; Annemie Adriaens

doi:10.1016/j.talanta.2014.10.035

In-situ spectroelectrochemical characterization of the electrochemical growth and breakdown of a lead dodecanoate coating on a lead substrate

Talanta. 2015 Jan:132:760-8. doi: 10.1016/j.talanta.2014.10.035. Epub 2014 Oct 28.

Authors

Michel De Keersmaecker¹, Mark Dowsett², Rosie Grayburn³, Dipanjan Banerjee⁴, Annemie Adriaens⁵

Affiliations

¹ Department of Analytical Chemistry, Ghent University, Krijgslaan 281-S12, 9000 Ghent, Belgium.
² Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
³ Department of Analytical Chemistry, Ghent University, Krijgslaan 281-S12, 9000 Ghent, Belgium; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
⁴ DUBBLE@ESRF (BM26), BP 220, 38043 Grenoble, France.
⁵ Department of Analytical Chemistry, Ghent University, Krijgslaan 281-S12, 9000 Ghent, Belgium. Electronic address: annemie.adriaens@ugent.be.

PMID: 25476375
DOI: 10.1016/j.talanta.2014.10.035

Abstract

This paper concerns a time lapse spectroelectrochemical study of the growth of lead dodecanoate layers on a lead substrate in an aqueous solution using cyclic voltammetry. In-situ synchrotron radiation X-ray diffraction measurements were carried out on station BM26A (DUBBLE) at the European Synchrotron Radiation Facility (ESRF) in France. The diffraction pattern images were taken using a two-dimensional Mar CCD camera. After deposition of the coating, a spectroelectrochemical study of a linear sweep voltammetry experiment using an acetic acid electrolyte, simulating 'active' lead corrosion, was carried out on both a bare and lead dodecanoate coated sample. The results show that the coating inhibits the formation of new lead corrosion products.

Keywords: Acetic acid; Lead; Lead dodecanoate coating; SR-XRD; Spectroelectrochemistry; Voltammetry.