Cyclic voltammetry of ion transfer across the polarized interface between the organic molten salt and the aqueous solution

Autor: Norihiro Tsujioka, Takashi Kakiuchi
Jazyk: angličtina
Rok vydání: 2003
Předmět:
Zdroj: Electrochemistry Communications, Vol 5, Iss 3, Pp 253-256 (2003)
ISSN: 1388-2481
Popis: A molten salt, or ionic liquid, composed of tetrahexylammonium bis(perfluoroethylsulfonyl)imide forms with an aqueous solution a polarized interface where the phase-boundary potential can be controlled externally. The available potential window of about 300 mV at 40 °C enables us to apply various electrochemical techniques for studying the structure and charge transfer reactions at the molten salt–water interface. Cyclic voltammetry of the transfer of moderately hydrophobic ions, such as 1-octyl-3-methylimidazolium and hexafluorophosphate ions, across the interface exemplifies the potentiality of this new electrochemical interface. This new type of polarized interface would facilitates electrochemical studies of molten salt–water two-phase systems that have been studied as an environmentally benign alternative of organic solvent–water two-phase systems for liquid–liquid extraction and two-phase organic synthesis. Keywords: Molten salt, Ionic liquid, Polarized interface, Cyclic voltammetry, Ion transfer
Databáze: OpenAIRE