Explaining high flow rate of water in carbon nanotubes via solid-liquid molecular interactions

Davide Mattia, F Calabrò

Research output: Contribution to journalArticle

64 Citations (Scopus)
75 Downloads (Pure)

Abstract

Experimental and simulation measurements of water flow through carbon nanotubes have shown orders of magnitude higher flow rates than what was predicted using continuum fluid mechanics models. Different explanations have been offered, from slippage of water on the hydrophobic surface of the nanotubes to size confinement effects. In this work a model capable of explaining these observations, linking the enhanced flow rates observed to the solid-liquid molecular interactions at the nanotube wall is proposed. The model is capable of separating the effects on flow enhancement of the tube characteristic dimensions and the solid-liquid molecular interactions, accurately predicting the effect of each component for nanotubes of different sizes, wall surface chemistry and structure. Comparison with the experimental data available shows good agreement.
Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalMicrofluidics and Nanofluidics
Volume13
Issue number1
Early online date21 Feb 2012
DOIs
Publication statusPublished - 1 Jul 2012

Fingerprint

Carbon Nanotubes
Molecular interactions
molecular interactions
Nanotubes
Carbon nanotubes
nanotubes
flow velocity
carbon nanotubes
Flow rate
Water
Liquids
liquids
water
continuum mechanics
Continuum mechanics
Flow of water
fluid mechanics
water flow
Fluid mechanics
Surface chemistry

Keywords

  • carbon nanotubes
  • work of adhesion
  • slip
  • nanofluidics

Cite this

Explaining high flow rate of water in carbon nanotubes via solid-liquid molecular interactions. / Mattia, Davide; Calabrò, F.

In: Microfluidics and Nanofluidics, Vol. 13, No. 1, 01.07.2012, p. 125-130.

Research output: Contribution to journalArticle

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