Barriers to Superfast Water Transport in Carbon Nanotube Membranes

Jens Honore Walther, Konstantinos Ritos, Eduardo R. Cruz-Chu, Constantine M. Megaridis, Petros Koumoutsakos

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Carbon nanotube (CNT) membranes hold the promise of extraordinary fast water transport for applications such as energy efficient filtration and molecular level drug delivery. However, experiments and computations have reported flow rate enhancements over continuum hydrodynamics that contradict each other by orders of magnitude. We perform large scale molecular dynamics simulations emulating for the first time the micrometer thick CNTs membranes used in experiments. We find transport enhancement rates that are length dependent due to entrance and exit losses but asymptote to 2 orders of magnitude over the continuum predictions. These rates are far below those reported experimentally. The results suggest that the reported superfast water transport rates cannot be attributed to interactions of water with pristine CNTs alone.
Original languageEnglish
JournalNano Letters
Volume13
Pages (from-to)1910-1914
ISSN1530-6984
DOIs
Publication statusPublished - 2013

Keywords

  • Carbon nanotubes
  • Super fast water transport
  • Molecular dynamics

Fingerprint

Dive into the research topics of 'Barriers to Superfast Water Transport in Carbon Nanotube Membranes'. Together they form a unique fingerprint.

Cite this