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Nanopore charge inversion and current-voltage curves in mixtures of asymmetric electrolytes

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Nanopore charge inversion and current-voltage curves in mixtures of asymmetric electrolytes

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dc.contributor.author Ramirez Hoyos, Patricio es_ES
dc.contributor.author Manzanares, José Antonio es_ES
dc.contributor.author Cervera Montesinos, Javier es_ES
dc.contributor.author Gómez Lozano, Vicente es_ES
dc.contributor.author Ali, Mubarak es_ES
dc.contributor.author Pause, Isabelle es_ES
dc.contributor.author Ensinger, Wolfgang es_ES
dc.contributor.author Mafé, Salvador es_ES
dc.date.accessioned 2018-12-29T21:00:53Z
dc.date.available 2018-12-29T21:00:53Z
dc.date.issued 2018 es_ES
dc.identifier.issn 0376-7388 es_ES
dc.identifier.uri http://hdl.handle.net/10251/114602
dc.description.abstract [EN] We consider the screening of the negative charges (carboxylic acid groups) fixed on the surface of a conical-shaped track-etched nanopore by divalent magnesium (Mg2+) and trivalent lanthanum (La3+). The experimental current (I)-voltage (V) curves and current rectification ratios allow discussing fundamental questions about the overcompensation of spatially-fixed charges by multivalent ions over nanoscale volumes. The effects of charge inversion or reversal on nanopore transport are discussed in mixtures of asymmetric electrolytes (LaCl3 and MgCl2 with KCl). In particular, pore charge inversion is demonstrated for La3+ as well as for mixtures of this trivalent ion at low concentrations with monovalent potassium (K+) and divalent Mg2+ ions at biologically relevant concentrations. It is found that small concentrations of multivalent ions can modulate the nanopore rectification and the transport of other majority ions in the solution. We study also the kinetics of the nanopore electrical recovery when the electrolyte solutions bathing the single-pore membrane are changed and show the hysteretic effects observed in the I-V curves. Finally, we describe the hysteresis observed in the I-V curves of CaCl2, MgCl2, and BaCl2 and mixtures. We also give a qualitative description of the effects of charge reversal on the pore rectification using the Nernst-Planck flux equations for multivalent ion mixtures. es_ES
dc.description.sponsorship P. R., J. A. M., J. C., V. G., and S. M. acknowledge the support from European Regional Development Funds and the Ministerio de Economia y Competitividad (project MAT2015-65011-P). M. A., I. P., and W. E. acknowledge the funding from the Hessen State Ministry of Higher Education, Research and the Arts, Germany, under the LOEWE project iNAPO. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/MAT2015-65011-P es_ES
dc.relation.ispartof Journal of Membrane Science es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Charged nanopore es_ES
dc.subject Current-voltage curve es_ES
dc.subject Asymmetric electrolytes es_ES
dc.subject Charge inversion es_ES
dc.subject Current rectification es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Nanopore charge inversion and current-voltage curves in mixtures of asymmetric electrolytes es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.memsci.2018.06.032 es_ES
dc.rights.accessRights Embargado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Ramirez Hoyos, P.; Manzanares, JA.; Cervera Montesinos, J.; Gómez Lozano, V.; Ali, M.; Pause, I.; Ensinger, W.... (2018). Nanopore charge inversion and current-voltage curves in mixtures of asymmetric electrolytes. Journal of Membrane Science. 563:633-642. doi:10.1016/j.memsci.2018.06.032 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.memsci.2018.06.032 es_ES
dc.description.upvformatpinicio 633 es_ES
dc.description.upvformatpfin 642 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 563 es_ES
dc.relation.pasarela 373474 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad (MINECO) es_ES


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