Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry
Abstract A growing number of reports have demonstrated plasmon-assisted electrochemical reactions, though debate exists around the mechanisms underlying the enhanced activity. Here we address the impact of plasmonic photothermal heating with cyclic voltammetry measurements and finite-element simulat...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | Communications Chemistry |
| Online Access: | https://doi.org/10.1038/s42004-024-01157-8 |
| _version_ | 1797219959074455552 |
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| author | Md. Al-Amin Johann V. Hemmer Padmanabh B. Joshi Kimber Fogelman Andrew J. Wilson |
| author_facet | Md. Al-Amin Johann V. Hemmer Padmanabh B. Joshi Kimber Fogelman Andrew J. Wilson |
| author_sort | Md. Al-Amin |
| collection | DOAJ |
| description | Abstract A growing number of reports have demonstrated plasmon-assisted electrochemical reactions, though debate exists around the mechanisms underlying the enhanced activity. Here we address the impact of plasmonic photothermal heating with cyclic voltammetry measurements and finite-element simulations. We find that plasmonic photothermal heating causes a reduction in the hysteresis of the anodic and cathodic waves of the voltammograms along with an increase in mass-transport limiting current density due to convection induced by a temperature gradient. At slow scan rates, a temperature difference as low as 1 K between the electrode surface and bulk electrolytic solution enhances the current density greater than 100%. Direct interband excitation of Au exclusively enhances current density by photothermal heating, while plasmon excitation leads to photothermal and nonthermal enhancements. Our study reveals the role of temperature gradients in plasmon-assisted electrochemistry and details a simple control experiment to account for photothermal heating. |
| first_indexed | 2024-04-24T12:41:55Z |
| format | Article |
| id | doaj.art-c9fd900bfbc349e79500a83317e73526 |
| institution | Directory Open Access Journal |
| issn | 2399-3669 |
| language | English |
| last_indexed | 2024-04-24T12:41:55Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Chemistry |
| spelling | doaj.art-c9fd900bfbc349e79500a83317e735262024-04-07T11:11:09ZengNature PortfolioCommunications Chemistry2399-36692024-04-017111010.1038/s42004-024-01157-8Quantification and description of photothermal heating effects in plasmon-assisted electrochemistryMd. Al-Amin0Johann V. Hemmer1Padmanabh B. Joshi2Kimber Fogelman3Andrew J. Wilson4Department of Chemistry, University of LouisvilleDepartment of Chemistry, University of LouisvilleDepartment of Chemistry, University of LouisvilleDepartment of Chemistry, University of LouisvilleDepartment of Chemistry, University of LouisvilleAbstract A growing number of reports have demonstrated plasmon-assisted electrochemical reactions, though debate exists around the mechanisms underlying the enhanced activity. Here we address the impact of plasmonic photothermal heating with cyclic voltammetry measurements and finite-element simulations. We find that plasmonic photothermal heating causes a reduction in the hysteresis of the anodic and cathodic waves of the voltammograms along with an increase in mass-transport limiting current density due to convection induced by a temperature gradient. At slow scan rates, a temperature difference as low as 1 K between the electrode surface and bulk electrolytic solution enhances the current density greater than 100%. Direct interband excitation of Au exclusively enhances current density by photothermal heating, while plasmon excitation leads to photothermal and nonthermal enhancements. Our study reveals the role of temperature gradients in plasmon-assisted electrochemistry and details a simple control experiment to account for photothermal heating.https://doi.org/10.1038/s42004-024-01157-8 |
| spellingShingle | Md. Al-Amin Johann V. Hemmer Padmanabh B. Joshi Kimber Fogelman Andrew J. Wilson Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry Communications Chemistry |
| title | Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry |
| title_full | Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry |
| title_fullStr | Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry |
| title_full_unstemmed | Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry |
| title_short | Quantification and description of photothermal heating effects in plasmon-assisted electrochemistry |
| title_sort | quantification and description of photothermal heating effects in plasmon assisted electrochemistry |
| url | https://doi.org/10.1038/s42004-024-01157-8 |
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