Nasir, Saima ; Ali, Mubarak ; Cervera, Javier ; Gomez, Vicente ; Hamza Ali Haider, M. ; Ensinger, Wolfgang ; Mafe, Salvador ; Ramirez, Patricio (2019)
Ionic transport characteristics of negatively and positively charged conical nanopores in 1:1, 2:1, 3:1, 2:2, 1:2, and 1:3 electrolytes.
In: Journal of Colloid and Interface Science, 553
doi: 10.1016/j.jcis.2019.06.061
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We study experimentally the current (I)-voltage (V) curves of 1:1, 2:1, 3:1, 2:2, 1:2, and 1:3 electrolytes in positively and negatively charged conically-shaped pores of nanoscale dimensions. The positive charges are poly(allylamine hydrochloride) chains functionalized on the pore surface by electrostatic interactions while the negative charges are carboxylic acid groups. Under physiological conditions, these fixed-charge groups are ionized and strongly interact with the different monovalent, divalent, and trivalent ions in the pore solution. The current rectification of the I-V curves and the membrane potentials provide fundamental information on the interaction of the pore charge groups with the mobile ions present at electrochemically and biologically relevant concentrations. The different pores and electrolytes studied, together with the abundant experimental data provided, can be useful to develop new theoretical simulations of transport phenomena in nanoscale solutions that are confined within charged surfaces.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Nasir, Saima ; Ali, Mubarak ; Cervera, Javier ; Gomez, Vicente ; Hamza Ali Haider, M. ; Ensinger, Wolfgang ; Mafe, Salvador ; Ramirez, Patricio |
| Art des Eintrags: | Bibliographie |
| Titel: | Ionic transport characteristics of negatively and positively charged conical nanopores in 1:1, 2:1, 3:1, 2:2, 1:2, and 1:3 electrolytes |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Oktober 2019 |
| Verlag: | Elsevier B.V. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Colloid and Interface Science |
| Jahrgang/Volume einer Zeitschrift: | 553 |
| DOI: | 10.1016/j.jcis.2019.06.061 |
| URL / URN: | https://doi.org/10.1016/j.jcis.2019.06.061 |
| Kurzbeschreibung (Abstract): | We study experimentally the current (I)-voltage (V) curves of 1:1, 2:1, 3:1, 2:2, 1:2, and 1:3 electrolytes in positively and negatively charged conically-shaped pores of nanoscale dimensions. The positive charges are poly(allylamine hydrochloride) chains functionalized on the pore surface by electrostatic interactions while the negative charges are carboxylic acid groups. Under physiological conditions, these fixed-charge groups are ionized and strongly interact with the different monovalent, divalent, and trivalent ions in the pore solution. The current rectification of the I-V curves and the membrane potentials provide fundamental information on the interaction of the pore charge groups with the mobile ions present at electrochemically and biologically relevant concentrations. The different pores and electrolytes studied, together with the abundant experimental data provided, can be useful to develop new theoretical simulations of transport phenomena in nanoscale solutions that are confined within charged surfaces. |
| Freie Schlagworte: | Charged conical nanopore, Current-voltage curve, Current rectification, Asymmetric electrolytes, Charge number effects, Membrane potential |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik |
| Hinterlegungsdatum: | 14 Feb 2020 10:05 |
| Letzte Änderung: | 13 Jan 2024 15:01 |
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