Using XPS to determine solute solubility in room temperature ionic liquids

Debbie S. Silvester, Tessa L. Broder, Leigh Aldous, Christopher Hardacre, Alison Crossley, Richard G. Compton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    X-Ray Photoelectron Spectroscopy (XPS) was used to quantify the amount of bromide ions present in two samples of [C4mpyrr]Br dissolved in the room temperature ionic liquid (RTIL) [C4mpyrr][N(Tf)2]. One sample was of a known concentration (0.436 Br atom%); the other was a saturated solution. The results obtained from quantitative XPS analysis indicated that the saturated sample had a concentration, or solubility, of 0.90 Br atom% (746 mM) at 298 K, which was then independently confirmed by potential-step chronoamperometry of the same solution.

    Original languageEnglish
    Pages (from-to)196-198
    Number of pages3
    JournalAnalyst
    Volume132
    Issue number3
    DOIs
    Publication statusPublished - 2007

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