Electrical and Electrochemical Behavior of Carbon Paste Electrodes Modified with Ionic Liquids Based in <i>N</i>-Octylpyridinium Bis(Trifluoromethylsulfonyl)Imide. A Theoretical and Experimental Study

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dc.contributor.authorBaez, Carla
dc.contributor.authorNavarro, Freddy
dc.contributor.authorFuenzalida, Francesca
dc.contributor.authorAguirre, Maria J.
dc.contributor.authorCarmen Arevalo, M.
dc.contributor.authorAfonso, Maria
dc.contributor.authorGarcia, Camilo
dc.contributor.authorRamirez, Galo
dc.contributor.authorAntonio Palenzuela, J.
dc.date.accessioned2025-01-23T21:10:51Z
dc.date.available2025-01-23T21:10:51Z
dc.date.issued2019
dc.description.abstractIn this work, we studied carbon paste electrodes (CPEs) with two kinds of binders: mineral oil or ionic liquids (IL) derived from N-substituted octyl pyridinium bis(trifluoromethylsulfonyl)imide with the substituents H-, CH3-, CN- and CF3-. The work aims to study this series of IL and determine a possible effect of the substituent of the cation in the behavior of the IL as a binder of graphite for obtaining IL-CPEs. The electrochemical response and the electrical behavior were measured by cyclic voltammetry and electrochemical impedance spectroscopy, respectively. Surprisingly, the substituent does not affect the cyclic voltammetry response because in all the cases, high resistance and high capacitive currents were obtained. The best response in terms of conductivity is obtained by CPE. In the case of impedance measurements, the substituent does not cause differences, and in all the cases, the IL-CPEs show nearly the same responses. CPE shows lower capacitance and higher resistance for diffusion compared to the IL-CPEs due to his lower porosity. The high resistance showed by the IL-CPEs by cyclic voltammetry can be attributed to poorly intermolecular forces among graphite, water, electrolyte, and ILs as demonstrated by theoretical calculations.
dc.fuente.origenWOS
dc.identifier.doi10.3390/molecules24183382
dc.identifier.eissn1420-3049
dc.identifier.urihttps://doi.org/10.3390/molecules24183382
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100867
dc.identifier.wosidWOS:000488830500174
dc.issue.numero18
dc.language.isoen
dc.revistaMolecules
dc.rightsacceso restringido
dc.subjectionic-liquid carbon paste electrodes
dc.subjectN-octyl pyridinium bis(trifluoromethylsulfonyl)imide
dc.subjectintramolecular forces of ionic liquid
dc.titleElectrical and Electrochemical Behavior of Carbon Paste Electrodes Modified with Ionic Liquids Based in <i>N</i>-Octylpyridinium Bis(Trifluoromethylsulfonyl)Imide. A Theoretical and Experimental Study
dc.typeartículo
dc.volumen24
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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