| Abstract
| - Both ionic liquids and water are typical green solvents. In this work, the phase behavior of the ternarysystem consisting of ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), TX-100,and water was determined at 25.0 °C. The water-in-bmimPF6, bicontinuous, and bmimPF6-in-watermicroregions of the microemulsions were identified by cyclic voltammetry method using potassiumferrocyanide K4Fe(CN)6 as the electroactive probe. Dynamic light scattering (DLS) and the UV−vis methodwere used to characterize the microemulsions. It was demonstrated that the hydrodynamic diameter (Dh)of the bmimPF6-in-water microemulsions is nearly independent of the water content but increases withincreasing bmimPF6 content due to the swelling of the micelles by the ionic liquid. The UV−vis furtherconfirmed the existence of water domains in the water-in-bmimPF6 microemulsions, and the salt potassiumferricyanide K3Fe(CN)6 could be dissolved in the water domains.
|
