Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates
We report a new configuration for enhancing the performance of scanning electrochemical microscopy (SECM) via heating of the substrate electrode. A flattened Pt microwire was employed as the substrate electrode. The substrate was heated by an alternating current (AC), resulting in an increased mass...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/5/1169 |
| _version_ | 1819113206893772800 |
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| author | Stefan Wert Alexander Fußstetter Christian Iffelsberger Frank-Michael Matysik |
| author_facet | Stefan Wert Alexander Fußstetter Christian Iffelsberger Frank-Michael Matysik |
| author_sort | Stefan Wert |
| collection | DOAJ |
| description | We report a new configuration for enhancing the performance of scanning electrochemical microscopy (SECM) via heating of the substrate electrode. A flattened Pt microwire was employed as the substrate electrode. The substrate was heated by an alternating current (AC), resulting in an increased mass transfer between the wire surface and the bulk solution. The electrochemical response of the Pt wire during heating was investigated by means of cyclic voltammetry (CV). The open circuit potential (OCP) of the wire was recorded over time, while varied heating currents were applied to investigate the time needed for establishing steady-state conditions. Diffusion layer studies were carried out by performing probe approach curves (PACs) for various measuring modes of SECM. Finally, imaging studies of a heated substrate electrode surface, applying feedback, substrate generation/tip collection (SG/TC), and the competition mode of SECM, were performed and compared with room temperature results. |
| first_indexed | 2024-12-22T04:25:44Z |
| format | Article |
| id | doaj.art-40457dde480049d98e2f3353d617c191 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-22T04:25:44Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-40457dde480049d98e2f3353d617c1912022-12-21T18:39:10ZengMDPI AGMolecules1420-30492020-03-01255116910.3390/molecules25051169molecules25051169Scanning Electrochemical Microscopy of Electrically Heated Wire SubstratesStefan Wert0Alexander Fußstetter1Christian Iffelsberger2Frank-Michael Matysik3Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, GermanyInstitute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, GermanyFuture Energy and Innovations Laboratory, CEITEC—Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech RepublicInstitute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, GermanyWe report a new configuration for enhancing the performance of scanning electrochemical microscopy (SECM) via heating of the substrate electrode. A flattened Pt microwire was employed as the substrate electrode. The substrate was heated by an alternating current (AC), resulting in an increased mass transfer between the wire surface and the bulk solution. The electrochemical response of the Pt wire during heating was investigated by means of cyclic voltammetry (CV). The open circuit potential (OCP) of the wire was recorded over time, while varied heating currents were applied to investigate the time needed for establishing steady-state conditions. Diffusion layer studies were carried out by performing probe approach curves (PACs) for various measuring modes of SECM. Finally, imaging studies of a heated substrate electrode surface, applying feedback, substrate generation/tip collection (SG/TC), and the competition mode of SECM, were performed and compared with room temperature results.https://www.mdpi.com/1420-3049/25/5/1169hot-wire electrochemistryscanning electrochemical microscopysecmheated electrodes |
| spellingShingle | Stefan Wert Alexander Fußstetter Christian Iffelsberger Frank-Michael Matysik Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates Molecules hot-wire electrochemistry scanning electrochemical microscopy secm heated electrodes |
| title | Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates |
| title_full | Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates |
| title_fullStr | Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates |
| title_full_unstemmed | Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates |
| title_short | Scanning Electrochemical Microscopy of Electrically Heated Wire Substrates |
| title_sort | scanning electrochemical microscopy of electrically heated wire substrates |
| topic | hot-wire electrochemistry scanning electrochemical microscopy secm heated electrodes |
| url | https://www.mdpi.com/1420-3049/25/5/1169 |
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