Electroreduction of chlorine gas at platinum electrodes in several room temperature ionic liquids: Evidence of strong adsorption on the electrode surface revealed by unusual voltammetry in which currents decrease with increasing voltage scan rates

Xing Jiu Huang, Debbie S. Silvester, Ian Streeter, Leigh Aldous, Christopher Hardacre, Richard G. Compton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Voltammetry is reported for chlorine, Cl2, dissolved in various room temperature ionic liquids using platinum microdisk electrodes. A single reductive voltammetric wave is seen and attributed to the two-electron reduction of chlorine to chloride. Studies of the effect of voltage scan rate reveal uniquely unusual behavior in which the magnitude of the currents decrease with increasing scan rates. A model for this is proposed and shown to indicate the presence of strongly adsorbed species in the electrode reaction mechanism, most likely chlorine atoms, Cl·(ads).

    Original languageEnglish
    Pages (from-to)19477-19483
    Number of pages7
    JournalJournal of Physical Chemistry C
    Volume112
    Issue number49
    DOIs
    Publication statusPublished - 11 Dec 2008

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