Quantized Water Transport

Ideal Desalination through Graphyne-4 Membrane

Chongqin Zhu, Hui Li, Xiao C Zeng, E. G. Wang, Sheng Meng

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Graphyne sheet exhibits promising potential for nanoscale desalination to achieve both high water permeability and salt rejection rate. Extensive molecular dynamics simulations on pore-size effects suggest that γ-graphyne-4, with 4 acetylene bonds between two adjacent phenyl rings, has the best performance with 100% salt rejection and an unprecedented water permeability, to our knowledge, of ∼13â€...L/cm 2 /day/MPa, 3 orders of magnitude higher than prevailing commercial membranes based on reverse osmosis, and ∼10 times higher than the state-of-the-art nanoporous graphene. Strikingly, water permeability across graphyne exhibits unexpected nonlinear dependence on the pore size. This counter-intuitive behavior is attributed to the quantized nature of water flow at the nanoscale, which has wide implications in controlling nanoscale water transport and designing highly effective membranes.

Original languageEnglish (US)
Article number3163
JournalScientific Reports
Volume3
DOIs
StatePublished - Nov 7 2013

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Desalination
Membranes
Water
Pore size
Salts
Acetylene
Flow of water
Graphite
Reverse osmosis
Molecular dynamics
Computer simulation

ASJC Scopus subject areas

  • General

Cite this

Quantized Water Transport : Ideal Desalination through Graphyne-4 Membrane. / Zhu, Chongqin; Li, Hui; Zeng, Xiao C; Wang, E. G.; Meng, Sheng.

In: Scientific Reports, Vol. 3, 3163, 07.11.2013.

Research output: Contribution to journalArticle

Zhu, Chongqin ; Li, Hui ; Zeng, Xiao C ; Wang, E. G. ; Meng, Sheng. / Quantized Water Transport : Ideal Desalination through Graphyne-4 Membrane. In: Scientific Reports. 2013 ; Vol. 3.
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