Please use this identifier to cite or link to this item: http://hdl.handle.net/10216/96838
Author(s): Renata Costa
Marta Figueiredo
Carlos M Pereira
Fernando Silva
Title: Electrochemical double layer at the interfaces of Hg/choline chloride based solvents
Issue Date: 2010
Abstract: The electrochemical Interfaces of several deep eutectic solvents based on choline chloride mixtures with 1 2-ethanediol 1 2-propanediol 1,3-propanediol urea or thiourea and mixtures of acetylcholine chloride with urea were studied at a Hg electrode The cyclic voltammetric results identified the potential domains of electrochemical stability and illustrated their dependence on the deep eutectic solvents composition The differential capacitance-potentials C(E) curves for the electrical double layers were obtained from electrochemical impedance data by adjusting the appropriate equivalent circuits The structure of the interfaces is proposed to be dominated by adsorption of choline cations at large negative polarizations while at less negative or positive polarizations the structure is dominated by the adsorption of the anion The temperature coefficients of capacitance were found to be nearly zero for Hg
Subject: Química
Chemical sciences
Call Number: 48310
URI: http://hdl.handle.net/10216/96838
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Revista Científica Internacional

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