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Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide
Graphene-based membranes demonstrating ultrafast water transport, precise molecular sieving of gas and solvated molecules shows great promise as novel separation platforms; however, scale-up of these membranes to large-areas remains an unresolved problem. Here we demonstrate that the discotic nemati...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786680/ https://www.ncbi.nlm.nih.gov/pubmed/26947916 http://dx.doi.org/10.1038/ncomms10891 |
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author | Akbari, Abozar Sheath, Phillip Martin, Samuel T. Shinde, Dhanraj B. Shaibani, Mahdokht Banerjee, Parama Chakraborty Tkacz, Rachel Bhattacharyya, Dibakar Majumder, Mainak |
author_facet | Akbari, Abozar Sheath, Phillip Martin, Samuel T. Shinde, Dhanraj B. Shaibani, Mahdokht Banerjee, Parama Chakraborty Tkacz, Rachel Bhattacharyya, Dibakar Majumder, Mainak |
author_sort | Akbari, Abozar |
collection | PubMed |
description | Graphene-based membranes demonstrating ultrafast water transport, precise molecular sieving of gas and solvated molecules shows great promise as novel separation platforms; however, scale-up of these membranes to large-areas remains an unresolved problem. Here we demonstrate that the discotic nematic phase of graphene oxide (GO) can be shear aligned to form highly ordered, continuous, thin films of multi-layered GO on a support membrane by an industrially adaptable method to produce large-area membranes (13 × 14 cm(2)) in <5 s. Pressure driven transport data demonstrate high retention (>90%) for charged and uncharged organic probe molecules with a hydrated radius above 5 Å as well as modest (30–40%) retention of monovalent and divalent salts. The highly ordered graphene sheets in the plane of the membrane make organized channels and enhance the permeability (71±5 l m(−2) hr(−1) bar(−1) for 150±15 nm thick membranes). |
format | Online Article Text |
id | pubmed-4786680 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47866802016-03-16 Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide Akbari, Abozar Sheath, Phillip Martin, Samuel T. Shinde, Dhanraj B. Shaibani, Mahdokht Banerjee, Parama Chakraborty Tkacz, Rachel Bhattacharyya, Dibakar Majumder, Mainak Nat Commun Article Graphene-based membranes demonstrating ultrafast water transport, precise molecular sieving of gas and solvated molecules shows great promise as novel separation platforms; however, scale-up of these membranes to large-areas remains an unresolved problem. Here we demonstrate that the discotic nematic phase of graphene oxide (GO) can be shear aligned to form highly ordered, continuous, thin films of multi-layered GO on a support membrane by an industrially adaptable method to produce large-area membranes (13 × 14 cm(2)) in <5 s. Pressure driven transport data demonstrate high retention (>90%) for charged and uncharged organic probe molecules with a hydrated radius above 5 Å as well as modest (30–40%) retention of monovalent and divalent salts. The highly ordered graphene sheets in the plane of the membrane make organized channels and enhance the permeability (71±5 l m(−2) hr(−1) bar(−1) for 150±15 nm thick membranes). Nature Publishing Group 2016-03-07 /pmc/articles/PMC4786680/ /pubmed/26947916 http://dx.doi.org/10.1038/ncomms10891 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Akbari, Abozar Sheath, Phillip Martin, Samuel T. Shinde, Dhanraj B. Shaibani, Mahdokht Banerjee, Parama Chakraborty Tkacz, Rachel Bhattacharyya, Dibakar Majumder, Mainak Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title | Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title_full | Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title_fullStr | Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title_full_unstemmed | Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title_short | Large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
title_sort | large-area graphene-based nanofiltration membranes by shear alignment of discotic nematic liquid crystals of graphene oxide |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786680/ https://www.ncbi.nlm.nih.gov/pubmed/26947916 http://dx.doi.org/10.1038/ncomms10891 |
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