Fast Permeation of Small Ions in Carbon Nanotubes.

Autor: Buchsbaum SF; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Jue ML; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Sawvel AM; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Chen C; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Meshot ER; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Park SJ; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Wood M; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Wu KJ; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Bilodeau CL; Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute Troy NY 12180 USA., Aydin F; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Pham TA; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Lau EY; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA., Fornasiero F; Physical and Life Sciences Lawrence Livermore National Laboratory Livermore CA 94550 USA.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2020 Dec 20; Vol. 8 (3), pp. 2001802. Date of Electronic Publication: 2020 Dec 20 (Print Publication: 2021).
DOI: 10.1002/advs.202001802
Abstrakt: Simulations and experiments have revealed enormous transport rates through carbon nanotube (CNT) channels when a pressure gradient drives fluid flow, but comparatively little attention has been given to concentration-driven transport despite its importance in many fields. Here, membranes are fabricated with a known number of single-walled CNTs as fluid transport pathways to precisely quantify the diffusive flow through CNTs. Contrary to early experimental studies that assumed bulk or hindered diffusion, measurements in this work indicate that the permeability of small ions through single-walled CNT channels is more than an order of magnitude higher than through the bulk. This flow enhancement scales with the ion free energy of transfer from bulk solutions to a nanoconfined, lower-dielectric environment. Reported results suggest that CNT membranes can unlock dialysis processes with unprecedented efficiency.
Competing Interests: The authors declare no conflict of interest.
(© 2020 The Authors. Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje