Using XPS to determine solute solubility in room temperature ionic liquids
Journal
Analyst
Journal Volume
132
Journal Issue
3
Start Page
196
End Page
198
ISSN
00032654
Date Issued
2007
Author(s)
Silvester, Debbie S.
Broder, Tessa L.
Hardacre, Christopher
Crossley, Alison
Compton, Richard G.
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. © The Royal Society of Chemistry.
SDGs
Publisher
Royal Society of Chemistry
Type
journal article