Bahadori, L. and Chakrabarti, M.H. and Manan, N.S.A. and Hashim, M.A. and Mjalli, F.S. and AlNashef, I.M. and Brandon, N. (2015) The Effect of Temperature on Kinetics and Diffusion Coefficients of Metallocene Derivatives in Polyol-Based Deep Eutectic Solvents. PLoS ONE, 10 (12). ISSN 1932-6203,
Full text not available from this repository.Abstract
The temperature dependence of the density, dynamic viscosity and ionic conductivity of several deep eutectic solvents (DESs) containing ammonium-based salts and hydrogen bond donvnors (polyol type) are investigated. The temperature-dependent electrolyte viscosity as a function of molar conductivity is correlated by means of Walden's rule. The oxidation of ferrocene (Fc/Fc(+)) and reduction of cobaltocenium (Cc(+)/Cc) at different temperatures are studied by cyclic voltammetry and potential-step chronoamperometry in DESs. For most DESs, chronoamperometric transients are demonstrated to fit an Arrhenius-type relation to give activation energies for the diffusion of redox couples at different temperatures. The temperature dependence of the measured conductivities of DES1 and DES2 are better correlated with the Vogel-Tamman-Fulcher equation. The kinetics of the Fc/Fc(+) and Cc(+)/Cc electrochemical systems have been investigated over a temperature range from 298 to 338 K. The heterogeneous electron transfer rate constant is then calculated at different temperatures by means of a logarithmic analysis. The glycerol-based DES (DES5) appears suitable for further testing in electrochemical energy storage devices.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Reference redox rystems; Ionic liquids; Choline-chloride; Quaternary ammonium; Cobaltocenium cation; Cyclic voltammetry; Physicochemical properties; Aqueous mixtures; Ferrocene; Electrochemistry |
| Subjects: | Q Science > Q Science (General) T Technology > T Technology (General) |
| Depositing User: | Mrs. Siti Mawarni Salim |
| Date Deposited: | 11 Aug 2016 03:06 |
| Last Modified: | 05 Jul 2017 01:22 |
| URI: | http://eprints.um.edu.my/id/eprint/16229 |
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