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dc.contributor.authorTorrent Burgués, Juan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationTorrent-Burgués, J. Reduction of Cd(II) ions in the presence of tetraethylammonium cations: adsorption effect on the electrode process. "Electrochem", Setembre 2021, vol. 2, núm. 3, p. 415-426.
dc.description.abstractThe effect of the adsorption of tetraethylammonium (TEA) cations, which present both ionic and organic characteristics, on the reduction of Cd(II) ions have been studied from dc and ac measurements at the dropping mercury electrode. The resistance to the charge transfer (Rct) and Warburg coefficient (s) parameters have been determined through impedance measurements. Thus, the global velocity constant has been obtained. The reduction process of Cd(II) in perchloric media is reversible and is affected by the adsorption of TEA cations, especially at high TEA concentrations. Values of E1/2, half wave potential, and DO, diffusion coefficient, obtained from both dc and ac measurements agree. The velocity constants show a decrease as TEA concentration increases, with values ranging from 0.6 to 0.01 cm·s-1. The inhibitory effect of TEA adsorption on the electrode process and the relationship between electrode coverage, ¿, and velocity constants, K, using several isotherm equations, have been discussed. The best fit was obtained with the equation K = 0K(1 - ¿)a with an a value close to three, indicating a blocking effect and electrostatic repulsion due to TEA
dc.format.extent12 p.
dc.publisherMDPI AG
dc.rightsAttribution 4.0 International
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química física::Electroquímica
dc.subject.otherDropping mercury electrode (DME)
dc.subject.otherTetraethylammonium cation (TEA)
dc.subject.otherElectrochemical impedance
dc.subject.otherElectrochemical reduction of Cd(II)
dc.subject.otherRandles circuit
dc.subject.otherAdsorption of TEA
dc.subject.otherAdsorption isotherm
dc.titleReduction of Cd(II) ions in the presence of tetraethylammonium cations: adsorption effect on the electrode process
dc.contributor.groupUniversitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorTorrent-Burgués, J.

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