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Title: Water Desalination Using Nanoporous Single-Layer Graphene with Tunable Pore Size

Abstract

Graphene has great potential to serve as a separation membrane due to its unique properties such as chemical and mechanical stability, flexibility and most importantly its one-atom thickness. In this study, we demonstrate first experimental evidence of the use of single-layer porous graphene as a desalination membrane. Nanometer-sized pores are introduced into single layer graphene using a convenient oxygen plasma etching process that permits tuning of the pore size. The resulting porous graphene membrane exhibited high rejection of salt ions and rapid water transport, thus functioning as an efficient water desalination membrane. Salt rejection selectivity of nearly 100% and exceptionally high water fluxes exceeding 105 g m-2 s-1 at 40 C were measured using saturated water vapor as a driving force.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1185491
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Nanotechnology
Additional Journal Information:
Journal Volume: 10; Journal Issue: 5; Journal ID: ISSN 1748-3387
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Surwade, Sumedh P., Smirnov, Sergei N., Vlassiouk, Ivan V., Unocic, Raymond R., Veith, Gabriel M., Dai, Sheng, and Mahurin, Shannon Mark. Water Desalination Using Nanoporous Single-Layer Graphene with Tunable Pore Size. United States: N. p., 2015. Web. doi:10.1038/nnano.2015.37.
Surwade, Sumedh P., Smirnov, Sergei N., Vlassiouk, Ivan V., Unocic, Raymond R., Veith, Gabriel M., Dai, Sheng, & Mahurin, Shannon Mark. Water Desalination Using Nanoporous Single-Layer Graphene with Tunable Pore Size. United States. doi:10.1038/nnano.2015.37.
Surwade, Sumedh P., Smirnov, Sergei N., Vlassiouk, Ivan V., Unocic, Raymond R., Veith, Gabriel M., Dai, Sheng, and Mahurin, Shannon Mark. Mon . "Water Desalination Using Nanoporous Single-Layer Graphene with Tunable Pore Size". United States. doi:10.1038/nnano.2015.37. https://www.osti.gov/servlets/purl/1185491.
@article{osti_1185491,
title = {Water Desalination Using Nanoporous Single-Layer Graphene with Tunable Pore Size},
author = {Surwade, Sumedh P. and Smirnov, Sergei N. and Vlassiouk, Ivan V. and Unocic, Raymond R. and Veith, Gabriel M. and Dai, Sheng and Mahurin, Shannon Mark},
abstractNote = {Graphene has great potential to serve as a separation membrane due to its unique properties such as chemical and mechanical stability, flexibility and most importantly its one-atom thickness. In this study, we demonstrate first experimental evidence of the use of single-layer porous graphene as a desalination membrane. Nanometer-sized pores are introduced into single layer graphene using a convenient oxygen plasma etching process that permits tuning of the pore size. The resulting porous graphene membrane exhibited high rejection of salt ions and rapid water transport, thus functioning as an efficient water desalination membrane. Salt rejection selectivity of nearly 100% and exceptionally high water fluxes exceeding 105 g m-2 s-1 at 40 C were measured using saturated water vapor as a driving force.},
doi = {10.1038/nnano.2015.37},
journal = {Nature Nanotechnology},
number = 5,
volume = 10,
place = {United States},
year = {Mon Mar 23 00:00:00 EDT 2015},
month = {Mon Mar 23 00:00:00 EDT 2015}
}

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Cited by: 261 works
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