Investigating the effects of pyridine and poly(4-vinylpyridine) on CO2 reduction electrocatalysis at gold electrodes using in situ surface-enhanced Raman spectroelectrochemistry
| Autor: | James J. Walsh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
In situ
Materials science Bicarbonate General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Photochemistry 01 natural sciences Redox 0104 chemical sciences chemistry.chemical_compound symbols.namesake chemistry Desorption Electrode Pyridine symbols Physical and Theoretical Chemistry 0210 nano-technology Raman spectroscopy |
| Zdroj: | Physical Chemistry Chemical Physics. 22:12766-12771 |
| ISSN: | 1463-9084 1463-9076 |
| DOI: | 10.1039/d0cp00632g |
| Popis: | The CO2 reduction reaction (CO2RR) at metal electrodes is altered in the presence of pyridine and related species. Thick films of poly(4-vinylpyridine) on Au electrodes result in large current enhancements at low applied potentials but do not enhance CO2RR at these potentials. Surface-enhanced Raman spectroelectrochemistry can probe CO2-surface interactions and reveals that desorption of CO2 as bicarbonate is retarded in the presence of 4-PVP, with implications for ion-transport limitations in thick film CO2RR. |
| Databáze: | OpenAIRE |
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