دورية أكاديمية
Rectified and Salt Concentration Dependent Wetting of Hydrophobic Nanopores.
| العنوان: | Rectified and Salt Concentration Dependent Wetting of Hydrophobic Nanopores. |
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| المؤلفون: | Polster JW; Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States., Aydin F; Quantum Simulations Group and Laboratory for Energy Applications for the Future, Lawrence Livermore National Laboratory, Livermore, California 94551, United States., de Souza JP; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States., Bazant MZ; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.; Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States., Pham TA; Quantum Simulations Group and Laboratory for Energy Applications for the Future, Lawrence Livermore National Laboratory, Livermore, California 94551, United States., Siwy ZS; Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States. |
| المصدر: | Journal of the American Chemical Society [J Am Chem Soc] 2022 Jul 06; Vol. 144 (26), pp. 11693-11705. Date of Electronic Publication: 2022 Jun 21. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 7503056 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5126 (Electronic) Linking ISSN: 00027863 NLM ISO Abbreviation: J Am Chem Soc Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Washington, DC : American Chemical Society Original Publication: Easton, Pa. [etc.] |
| مواضيع طبية MeSH: | Nanopores*, Hydrophobic and Hydrophilic Interactions ; Ions ; Sodium Chloride ; Water/chemistry ; Wettability |
| مستخلص: | Nanopores lined with hydrophobic groups function as switches for water and all dissolved species, such that transport is allowed only when applying a sufficiently high transmembrane pressure difference or voltage. Here we show a hydrophobic nanopore system whose wetting and ability to transport water and ions is rectified and can be controlled with salt concentration. The nanopore we study contains a junction between a hydrophobic zone and a positively charged hydrophilic zone. The nanopore is closed for transport at low salt concentrations and exhibits finite current only when the concentration reaches a threshold value that is dependent on the pore opening diameter, voltage polarity and magnitude, and type of electrolyte. The smallest nanopore studied here had a 4 nm diameter and did not open for transport in any concentration of KCl or KI examined. A 12 nm nanopore was closed for all KCl solutions but conducted current in KI at concentrations above 100 mM for negative voltages and opened for both voltage polarities at 500 mM KI. Nanopores with a hydrophobic/hydrophilic junction can thus function as diodes, such that one can identify a range of salt concentrations where the pores transport water and ions for only one voltage polarity. Molecular dynamics simulations together with continuum models provided a multiscale explanation of the observed phenomena and linked the salt concentration dependence of wetting with an electrowetting model. Results presented are crucial for designing next-generation chemical and ionic separation devices as well as understanding fundamental properties of hydrophobic interfaces under nanoconfinement. |
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| المشرفين على المادة: | 0 (Ions) 059QF0KO0R (Water) 451W47IQ8X (Sodium Chloride) |
| تواريخ الأحداث: | Date Created: 20220621 Date Completed: 20220707 Latest Revision: 20220801 |
| رمز التحديث: | 20240628 |
| مُعرف محوري في PubMed: | PMC9264351 |
| DOI: | 10.1021/jacs.2c03436 |
| PMID: | 35729706 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1520-5126 |
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| DOI: | 10.1021/jacs.2c03436 |