Ion transport through single-walled carbon nanotubes: Effects of electric field and fixed surface charge
| Autor: | Michelle P. Aranha, Brian J. Edwards |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Donnan potential
Materials science General Physics and Astronomy Ion Transport Process 02 engineering and technology Carbon nanotube Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Ion symbols.namesake Chemical engineering law Electric field symbols Surface charge Physical and Theoretical Chemistry 0210 nano-technology Ion transporter |
| Zdroj: | Chemical Physics Letters. 712:95-101 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2018.09.072 |
| Popis: | We investigate the ion permeation trends for an aqueous sodium chloride solution through negatively charged carbon nanotubes under the simultaneous effects of a concentration gradient and an electric field using Molecular Dynamics simulations. A two-stage ion transport process was observed that resulted in a tunable effective ion flux toward the low concentration reservoir wherein the first stage resembled an electric-field assisted counter-ion (sodium) migration to the downstream reservoir for a short period of time followed by a second stage consisting of diffusion-driven electrolyte transport governed by the strength of the Donnan potential formed by the fixed charge on the nanotube. |
| Databáze: | OpenAIRE |
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