High and Stable Ionic Conductivity in 2D Nanofluidic Ion Channels between Boron Nitride Layers - Sorbonne Université Access content directly
Journal Articles Journal of the American Chemical Society Year : 2017

High and Stable Ionic Conductivity in 2D Nanofluidic Ion Channels between Boron Nitride Layers

Abstract

Achieving a high rate of ionic transport through porous membranes and ionic channels is important in numerous applications ranging from energy storage to water desalination, but still remains a challenge. Herein we show that ions can quickly pass through interlayer spaces in hydrated boron nitride (BN) membranes. Measurements of surface-charge governed ionic currents through BN conduits in a variety of salt solutions (KCl, NaCl and CaCl 2) at low salt concentrations (<10-4 M) showed several orders of magnitude higher ionic conductivity compared to the bulk solution. Moreover , due to the outstanding chemical and thermal stability of BN, the ionic conduits remain fully functional at temperatures up to 90°C. The BN conduits can operate in acidic and basic environments, and do not degrade after immersing in solutions with extreme pH (pH~0 or 14) for one week. Those excellent properties make the BN ionic conduits attractive for applications in nanofluidic devices and membrane separation.
Fichier principal
Vignette du fichier
Qin_2017_High_and_Stable.pdf (991.46 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-01517523 , version 1 (03-05-2017)

Identifiers

Cite

Si Qin, Dan Liu, Guang Wang, David Portehault, Christopher J. Garvey, et al.. High and Stable Ionic Conductivity in 2D Nanofluidic Ion Channels between Boron Nitride Layers. Journal of the American Chemical Society, 2017, 139 (18), pp.6314-6320. ⟨10.1021/jacs.6b11100⟩. ⟨hal-01517523⟩
146 View
625 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More