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Exacerbation of the mild steel corrosion process by direct electron transfer between [Fe-Fe]-hydrogenase and material surface

Rouvre, Ingrid and Basséguy, Régine Exacerbation of the mild steel corrosion process by direct electron transfer between [Fe-Fe]-hydrogenase and material surface. (2016) Corrosion Science, 111. 199-211. ISSN 0010-938X

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Official URL: https://doi.org/10.1016/j.corsci.2016.05.005

Abstract

The influence of [Fe-Fe]-hydrogenase from Clostridium acetobutylicum on the anaerobic corrosion of mild steel was studied and the use of a dialysis bag to contain the enzyme in the close vicinity of the electrode surface led to conclusive tests. Electrochemical measurements (open-circuit potential monitoring, corrosion rate evolution, impedance), and surface and medium analysis, all confirmed the strong effect of hydrogenase to exacerbate the corrosion process. Electrolysis performed at a cathodic potential proved that hydrogenase catalysed the electrochemical reduction of protons or water into dihydrogen by direct electron transfer, demonstrating the involvement of hydrogenase in cathodic depolarisation.

Item Type:Article
HAL Id:hal-01907316
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Loetitia MOYA
Deposited On:22 Oct 2018 11:56

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