Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials
Chemical imaging of corrosion processes involving copper species using scanning electrochemical microscopy has been hampered by the lack of soluble oxidation states for copper that can be achieved by amperometric conversion at the tip. Indeed, the only possibility is to reduce the corrosion products...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/12/1965 |
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| author | Brenda Hernández-Concepción Adrián Méndez-Guerra Ricardo M. Souto Javier Izquierdo |
| author_facet | Brenda Hernández-Concepción Adrián Méndez-Guerra Ricardo M. Souto Javier Izquierdo |
| author_sort | Brenda Hernández-Concepción |
| collection | DOAJ |
| description | Chemical imaging of corrosion processes involving copper species using scanning electrochemical microscopy has been hampered by the lack of soluble oxidation states for copper that can be achieved by amperometric conversion at the tip. Indeed, the only possibility is to reduce the corrosion products at the tip, thus modifying the chemical response of the electrode material and requiring subsequent redissolution of the copper deposits. Consequently, the limitations arising from the system prevented a full-scale quantification, requiring the development of new methodologies or the optimisation of those currently available, as we pursued with the present work. Therefore, the voltammetric behaviours of gold macro- and microelectrodes were evaluated with respect to the collection and redissolution of Cu<sup>2+</sup> ions, with the aim of using them as sensing probes in scanning electrochemical microscopy (SECM) to investigate the activity of copper surfaces in acidic chloride-containing environments. Cyclic and square-wave voltammetric techniques were explored for copper collection and subsequent stripping on Au microelectrode tips in SECM with the objective to capture in situ image electrochemical reactivity distributions across copper surfaces undergoing corrosion. |
| first_indexed | 2024-03-08T20:33:18Z |
| format | Article |
| id | doaj.art-fc72e56bab42400a860a7d1b3de955de |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-08T20:33:18Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-fc72e56bab42400a860a7d1b3de955de2023-12-22T14:24:41ZengMDPI AGMetals2075-47012023-12-011312196510.3390/met13121965Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based MaterialsBrenda Hernández-Concepción0Adrián Méndez-Guerra1Ricardo M. Souto2Javier Izquierdo3Department of Chemistry, Universidad de La Laguna, P.O. Box 456, Tenerife, 38200 La Laguna, SpainDepartment of Chemistry, Universidad de La Laguna, P.O. Box 456, Tenerife, 38200 La Laguna, SpainDepartment of Chemistry, Universidad de La Laguna, P.O. Box 456, Tenerife, 38200 La Laguna, SpainDepartment of Chemistry, Universidad de La Laguna, P.O. Box 456, Tenerife, 38200 La Laguna, SpainChemical imaging of corrosion processes involving copper species using scanning electrochemical microscopy has been hampered by the lack of soluble oxidation states for copper that can be achieved by amperometric conversion at the tip. Indeed, the only possibility is to reduce the corrosion products at the tip, thus modifying the chemical response of the electrode material and requiring subsequent redissolution of the copper deposits. Consequently, the limitations arising from the system prevented a full-scale quantification, requiring the development of new methodologies or the optimisation of those currently available, as we pursued with the present work. Therefore, the voltammetric behaviours of gold macro- and microelectrodes were evaluated with respect to the collection and redissolution of Cu<sup>2+</sup> ions, with the aim of using them as sensing probes in scanning electrochemical microscopy (SECM) to investigate the activity of copper surfaces in acidic chloride-containing environments. Cyclic and square-wave voltammetric techniques were explored for copper collection and subsequent stripping on Au microelectrode tips in SECM with the objective to capture in situ image electrochemical reactivity distributions across copper surfaces undergoing corrosion.https://www.mdpi.com/2075-4701/13/12/1965square-wave voltammetrycyclic voltammetrygold microelectrodeanodic strippingcopper corrosionscanning electrochemical microscopy |
| spellingShingle | Brenda Hernández-Concepción Adrián Méndez-Guerra Ricardo M. Souto Javier Izquierdo Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials Metals square-wave voltammetry cyclic voltammetry gold microelectrode anodic stripping copper corrosion scanning electrochemical microscopy |
| title | Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials |
| title_full | Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials |
| title_fullStr | Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials |
| title_full_unstemmed | Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials |
| title_short | Evaluation of the Applicability of Voltammetric Modes in Scanning Electrochemical Microscopy for In Situ Corrosion Characterisation of Copper-Based Materials |
| title_sort | evaluation of the applicability of voltammetric modes in scanning electrochemical microscopy for in situ corrosion characterisation of copper based materials |
| topic | square-wave voltammetry cyclic voltammetry gold microelectrode anodic stripping copper corrosion scanning electrochemical microscopy |
| url | https://www.mdpi.com/2075-4701/13/12/1965 |
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