The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater
The corrosion behavior of copper electrode in unpolluted and sulfide polluted synthetic seawater (SSW) was carried out. It was demonstrated that the coexistence of sulfide and dissolved dioxygen in seawater leads to an increase in the anodic and cathodic current densities. However, the addition of c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-04-01
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| Series: | Journal of King Saud University: Science |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1018364720300835 |
| _version_ | 1819016902451658752 |
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| author | Khadija EL Mouaden Lahcen Bazzi Souad EL Issami Ahmed Tara Omar Jbara Florica Simescu Lazar |
| author_facet | Khadija EL Mouaden Lahcen Bazzi Souad EL Issami Ahmed Tara Omar Jbara Florica Simescu Lazar |
| author_sort | Khadija EL Mouaden |
| collection | DOAJ |
| description | The corrosion behavior of copper electrode in unpolluted and sulfide polluted synthetic seawater (SSW) was carried out. It was demonstrated that the coexistence of sulfide and dissolved dioxygen in seawater leads to an increase in the anodic and cathodic current densities. However, the addition of chitosan polymer as corrosion inhibitor resulted in a significant decrease in the anodic as well as cathodic current densities. The immersion of copper sample in the sulfide-polluted seawater resulted in the formation of a copper sulfide layer on the metal surface. It was observed that the copper sulfide formed on copper foam immersed in sulfide-polluted seawater affects the oxygen reduction reaction (ORR) and, therefore, the entire corrosion mechanism. The copper sulfide film was also obtained on the copper electrodes following electrodeposition method (chronoamperometry). The deposited film increased the diffusion-limiting current suggesting the diffusion-controlled mechanism of the ORR. The presence of chitosan decreased the current density and the rate of oxygen reduction in the synthetic seawater solution. Keywords: Catalytic activity, Corrosion inhibition, Oxygen reduction, Cathodic reaction, Sulfide polluted synthetic seawater, Electrodeposition |
| first_indexed | 2024-12-21T02:55:00Z |
| format | Article |
| id | doaj.art-3f4215a6299246bbbeef8ab512162de3 |
| institution | Directory Open Access Journal |
| issn | 1018-3647 |
| language | English |
| last_indexed | 2024-12-21T02:55:00Z |
| publishDate | 2020-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of King Saud University: Science |
| spelling | doaj.art-3f4215a6299246bbbeef8ab512162de32022-12-21T19:18:20ZengElsevierJournal of King Saud University: Science1018-36472020-04-0132321422147The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawaterKhadija EL Mouaden0Lahcen Bazzi1Souad EL Issami2Ahmed Tara3Omar Jbara4Florica Simescu Lazar5Team of Applied Chemistry-Physic, Faculty of Sciences, University of IBN ZOHR, B.P. 8106 Cité Dakhla, Agadir, Morocco; Corresponding author.Team of Applied Chemistry-Physic, Faculty of Sciences, University of IBN ZOHR, B.P. 8106 Cité Dakhla, Agadir, Morocco; Industrial and Logistic Laboratory, Sup MTI, Rabat, MoroccoTeam of Applied Chemistry-Physic, Faculty of Sciences, University of IBN ZOHR, B.P. 8106 Cité Dakhla, Agadir, MoroccoL'institut de Thermique, Mécanique, Matériaux (ITheMM) EA 7548, Université de Reims Champagne-Ardenne, FranceL'institut de Thermique, Mécanique, Matériaux (ITheMM) EA 7548, Université de Reims Champagne-Ardenne, FranceL'institut de Thermique, Mécanique, Matériaux (ITheMM) EA 7548, Université de Reims Champagne-Ardenne, FranceThe corrosion behavior of copper electrode in unpolluted and sulfide polluted synthetic seawater (SSW) was carried out. It was demonstrated that the coexistence of sulfide and dissolved dioxygen in seawater leads to an increase in the anodic and cathodic current densities. However, the addition of chitosan polymer as corrosion inhibitor resulted in a significant decrease in the anodic as well as cathodic current densities. The immersion of copper sample in the sulfide-polluted seawater resulted in the formation of a copper sulfide layer on the metal surface. It was observed that the copper sulfide formed on copper foam immersed in sulfide-polluted seawater affects the oxygen reduction reaction (ORR) and, therefore, the entire corrosion mechanism. The copper sulfide film was also obtained on the copper electrodes following electrodeposition method (chronoamperometry). The deposited film increased the diffusion-limiting current suggesting the diffusion-controlled mechanism of the ORR. The presence of chitosan decreased the current density and the rate of oxygen reduction in the synthetic seawater solution. Keywords: Catalytic activity, Corrosion inhibition, Oxygen reduction, Cathodic reaction, Sulfide polluted synthetic seawater, Electrodepositionhttp://www.sciencedirect.com/science/article/pii/S1018364720300835 |
| spellingShingle | Khadija EL Mouaden Lahcen Bazzi Souad EL Issami Ahmed Tara Omar Jbara Florica Simescu Lazar The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater Journal of King Saud University: Science |
| title | The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| title_full | The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| title_fullStr | The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| title_full_unstemmed | The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| title_short | The effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| title_sort | effect of electrodeposited copper sulfide on the cathodic mechanism of copper immersed in synthetic seawater |
| url | http://www.sciencedirect.com/science/article/pii/S1018364720300835 |
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