Additivity of ionic currents in mixed electrolyte solutions and confined geometries

[EN] Electrolyte mixtures in aqueous solutions are central to biophysical chemistry and chemical engineering. In many cases, ions are confined to nanoscale volumes with surface electrical charges. Here, we analyze experimentally the additivity of ionic currents across negatively charged conical nano...

Descripción completa

Detalles Bibliográficos
Autores: Perez-Grau, Jose J., Cervera, Javier, Nasir, Saima, Ali, Mubarak, Ensinger, Wolfgang, Mafe, Salvador, Ramirez Hoyos, Patricio|||0000-0002-0067-4887
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/197354
Acceso en línea:https://riunet.upv.es/handle/10251/197354
Access Level:acceso abierto
Palabra clave:Conical nanopore
Mixed electrolytes
Lithium ion
Calcium ion
Current additivity
FISICA APLICADA
id ES_8cb6f547a2aa16c05924c04e02aeca1e
oai_identifier_str oai:riunet.upv.es:10251/197354
network_acronym_str ES
network_name_str España
repository_id_str
spelling Additivity of ionic currents in mixed electrolyte solutions and confined geometriesPerez-Grau, Jose J.Cervera, JavierNasir, SaimaAli, MubarakEnsinger, WolfgangMafe, SalvadorRamirez Hoyos, Patricio|||0000-0002-0067-4887Conical nanoporeMixed electrolytesLithium ionCalcium ionCurrent additivityFISICA APLICADA[EN] Electrolyte mixtures in aqueous solutions are central to biophysical chemistry and chemical engineering. In many cases, ions are confined to nanoscale volumes with surface electrical charges. Here, we analyze experimentally the additivity of ionic currents across negatively charged conical nanopores in mixed electrolyte solutions. These pores show an asymmetric axial distribution of carboxylic acid groups on the pore surface, which gives rectified current (I)-voltage (V) curves when a single-pore membrane is bathed by two symmetrical aqueous solutions at neutral pH values. We consider KCl, LiCl, NaCl, CsCl, CaCl2, and K2SO4 pure electrolytes as well as the mixed electrolyte systems LiCl + KCl, NaCl + KCl, CsCl + KCl, CaCl2 + KCl, and K2SO4 + KCl for concentrations ranging from 2 to 500 mM and applied voltages between -2 V and 2 V. The difference between the sum of the pure electrolyte currents and the mixed electrolyte current is studied in terms of the electrolyte concentration, the sign of the applied voltage in the current-voltage curves, and the mixed electrolyte type. (C) 2022 Elsevier B.V. All rights reserved.Financial support from the Ministerio de Economia y Competitividad, under project PID2021-126109NB-I00, the European Regional Development Funds, and the Hessen State Ministry of Higher Education, Research and the Arts, Germany, under the LOEWE project iNAPO is gratefully acknowledged. We thank Prof. Antonio Alcaraz and Dr. Maria Queralt-Martin for helpful suggestions. Spe-cial thanks to Prof. C. Trautmann and Dr. E. Toimil Molares (GSI, Material Research Department) for their support with the irradia-tion experiments. The heavy ion irradiation is based on a UMAT experiment, which was performed at the X0-beamline of the UNI-LAC at the GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt (Germany) in the frame of FAIR Phase-0.ElsevierDepartamento de Física AplicadaEscuela Técnica Superior de ArquitecturaCentro de Tecnologías Físicas: Acústica, Materiales y AstrofísicaAgencia Estatal de InvestigaciónEuropean Regional Development FundHessisches Ministerium für Wissenschaft und Kunst, AlemaniaRepositorio Institucional de la Universitat Politècnica de València Riunet20222022-08-15journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/197354reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 PID2021-126109NB-I00 Proyectos de Generación de Conocimiento 2021open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1973542026-06-13T07:49:27Z
dc.title.none.fl_str_mv Additivity of ionic currents in mixed electrolyte solutions and confined geometries
title Additivity of ionic currents in mixed electrolyte solutions and confined geometries
spellingShingle Additivity of ionic currents in mixed electrolyte solutions and confined geometries
Perez-Grau, Jose J.
Conical nanopore
Mixed electrolytes
Lithium ion
Calcium ion
Current additivity
FISICA APLICADA
title_short Additivity of ionic currents in mixed electrolyte solutions and confined geometries
title_full Additivity of ionic currents in mixed electrolyte solutions and confined geometries
title_fullStr Additivity of ionic currents in mixed electrolyte solutions and confined geometries
title_full_unstemmed Additivity of ionic currents in mixed electrolyte solutions and confined geometries
title_sort Additivity of ionic currents in mixed electrolyte solutions and confined geometries
dc.creator.none.fl_str_mv Perez-Grau, Jose J.
Cervera, Javier
Nasir, Saima
Ali, Mubarak
Ensinger, Wolfgang
Mafe, Salvador
Ramirez Hoyos, Patricio|||0000-0002-0067-4887
author Perez-Grau, Jose J.
author_facet Perez-Grau, Jose J.
Cervera, Javier
Nasir, Saima
Ali, Mubarak
Ensinger, Wolfgang
Mafe, Salvador
Ramirez Hoyos, Patricio|||0000-0002-0067-4887
author_role author
author2 Cervera, Javier
Nasir, Saima
Ali, Mubarak
Ensinger, Wolfgang
Mafe, Salvador
Ramirez Hoyos, Patricio|||0000-0002-0067-4887
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Aplicada
Escuela Técnica Superior de Arquitectura
Centro de Tecnologías Físicas: Acústica, Materiales y Astrofísica
Agencia Estatal de Investigación
European Regional Development Fund
Hessisches Ministerium für Wissenschaft und Kunst, Alemania
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Conical nanopore
Mixed electrolytes
Lithium ion
Calcium ion
Current additivity
FISICA APLICADA
topic Conical nanopore
Mixed electrolytes
Lithium ion
Calcium ion
Current additivity
FISICA APLICADA
description [EN] Electrolyte mixtures in aqueous solutions are central to biophysical chemistry and chemical engineering. In many cases, ions are confined to nanoscale volumes with surface electrical charges. Here, we analyze experimentally the additivity of ionic currents across negatively charged conical nanopores in mixed electrolyte solutions. These pores show an asymmetric axial distribution of carboxylic acid groups on the pore surface, which gives rectified current (I)-voltage (V) curves when a single-pore membrane is bathed by two symmetrical aqueous solutions at neutral pH values. We consider KCl, LiCl, NaCl, CsCl, CaCl2, and K2SO4 pure electrolytes as well as the mixed electrolyte systems LiCl + KCl, NaCl + KCl, CsCl + KCl, CaCl2 + KCl, and K2SO4 + KCl for concentrations ranging from 2 to 500 mM and applied voltages between -2 V and 2 V. The difference between the sum of the pure electrolyte currents and the mixed electrolyte current is studied in terms of the electrolyte concentration, the sign of the applied voltage in the current-voltage curves, and the mixed electrolyte type. (C) 2022 Elsevier B.V. All rights reserved.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-08-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/197354
url https://riunet.upv.es/handle/10251/197354
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 PID2021-126109NB-I00 Proyectos de Generación de Conocimiento 2021
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412955009843200
score 15,223283

Similares en LA Referencia