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 using 0.05 M NaClO, NaHPO4, and NaHPO 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 in an alkaline NaHPO solution, which is a specifically interacting anion. Moreover, the highest sensitivity of the Ag electrode toward CHCl reduction was observed in a neutral NaClO 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.
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| http://dx.doi.org/10.3390/molecules26030525 | DOI Listing |
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