Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions
Herein, we report, for the first time, a comparative study on the electrocatalytic reduction of chloroform on silver in different aqueous supporting electrolytes. Cyclic voltammetry measurements were performed at a wide range of scan rates and concentrations of CHCl<sub>3</sub> using 0.0...
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MDPI AG
2021-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/3/525 |
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| author | Anna M. Brudzisz Agnieszka Brzózka Grzegorz D. Sulka |
| author_facet | Anna M. Brudzisz Agnieszka Brzózka Grzegorz D. Sulka |
| author_sort | Anna M. Brudzisz |
| collection | DOAJ |
| description | Herein, we report, for the first time, a comparative study on the electrocatalytic reduction of chloroform on silver in different aqueous supporting electrolytes. Cyclic voltammetry measurements were performed at a wide range of scan rates and concentrations of CHCl<sub>3</sub> using 0.05 M NaClO<sub>4</sub>, NaH<sub>2</sub>PO4, and Na<sub>2</sub>HPO<sub>4</sub> as supporting electrolytes. We observed that a type of supporting electrolyte anion strongly influences both the potential as well as the current density of the chloroform reduction peak, mainly due to the presence of OH<sup>−</sup> in an alkaline Na<sub>2</sub>HPO<sub>4</sub> solution, which is a specifically interacting anion. Moreover, the highest sensitivity of the Ag electrode toward CHCl<sub>3</sub> reduction was observed in a neutral NaClO<sub>4</sub> aqueous solution. It was found that the electroreduction of chloroform at the silver surface occurs via a concerted mechanism regardless of the type of the studied supporting electrolyte. |
| first_indexed | 2024-03-09T04:12:24Z |
| format | Article |
| id | doaj.art-16e09e8d6c07400cb2558bfa58e0ca83 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T04:12:24Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-16e09e8d6c07400cb2558bfa58e0ca832023-12-03T13:57:59ZengMDPI AGMolecules1420-30492021-01-0126352510.3390/molecules26030525Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous SolutionsAnna M. Brudzisz0Agnieszka Brzózka1Grzegorz D. Sulka2Faculty of Advanced Technology and Chemistry, Institute of Materials Science and Engineering, Military University of Technology, Kaliskiego 2, 00908 Warszawa, PolandDepartment of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30387 Krakow, PolandDepartment of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30387 Krakow, PolandHerein, we report, for the first time, a comparative study on the electrocatalytic reduction of chloroform on silver in different aqueous supporting electrolytes. Cyclic voltammetry measurements were performed at a wide range of scan rates and concentrations of CHCl<sub>3</sub> using 0.05 M NaClO<sub>4</sub>, NaH<sub>2</sub>PO4, and Na<sub>2</sub>HPO<sub>4</sub> as supporting electrolytes. We observed that a type of supporting electrolyte anion strongly influences both the potential as well as the current density of the chloroform reduction peak, mainly due to the presence of OH<sup>−</sup> in an alkaline Na<sub>2</sub>HPO<sub>4</sub> solution, which is a specifically interacting anion. Moreover, the highest sensitivity of the Ag electrode toward CHCl<sub>3</sub> reduction was observed in a neutral NaClO<sub>4</sub> aqueous solution. It was found that the electroreduction of chloroform at the silver surface occurs via a concerted mechanism regardless of the type of the studied supporting electrolyte.https://www.mdpi.com/1420-3049/26/3/525silver electrodesupporting electrolyteelectrocatalytic reductiontrichloromethane |
| spellingShingle | Anna M. Brudzisz Agnieszka Brzózka Grzegorz D. Sulka Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions Molecules silver electrode supporting electrolyte electrocatalytic reduction trichloromethane |
| title | Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions |
| title_full | Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions |
| title_fullStr | Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions |
| title_full_unstemmed | Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions |
| title_short | Effect of the Supporting Electrolyte on Chloroform Reduction at a Silver Electrode in Aqueous Solutions |
| title_sort | effect of the supporting electrolyte on chloroform reduction at a silver electrode in aqueous solutions |
| topic | silver electrode supporting electrolyte electrocatalytic reduction trichloromethane |
| url | https://www.mdpi.com/1420-3049/26/3/525 |
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