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Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration

Layered two-dimensional materials can potentially be utilized for organic solvent nanofiltration (OSN) membrane fabrication owing to their precise molecular sieving by the interlayer structure and excellent stability in harsh conditions. Nevertheless, the extensive tortuosity of nanochannels and bul...

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Autores principales: Kang, Junhyeok, Ko, Yeongnam, Kim, Jeong Pil, Kim, Ju Yeon, Kim, Jiwon, Kwon, Ohchan, Kim, Ki Chul, Kim, Dae Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9935848/
https://www.ncbi.nlm.nih.gov/pubmed/36797272
http://dx.doi.org/10.1038/s41467-023-36524-x
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author Kang, Junhyeok
Ko, Yeongnam
Kim, Jeong Pil
Kim, Ju Yeon
Kim, Jiwon
Kwon, Ohchan
Kim, Ki Chul
Kim, Dae Woo
author_facet Kang, Junhyeok
Ko, Yeongnam
Kim, Jeong Pil
Kim, Ju Yeon
Kim, Jiwon
Kwon, Ohchan
Kim, Ki Chul
Kim, Dae Woo
author_sort Kang, Junhyeok
collection PubMed
description Layered two-dimensional materials can potentially be utilized for organic solvent nanofiltration (OSN) membrane fabrication owing to their precise molecular sieving by the interlayer structure and excellent stability in harsh conditions. Nevertheless, the extensive tortuosity of nanochannels and bulky solvent molecules impede rapid permeability. Herein, nanoporous graphene (NG) with a high density of sp(2) carbon domain was synthesized via sequential thermal pore activation of graphene oxide (GO) and microwave-assisted reduction. Due to the smooth sp(2) carbon domain surfaces and dense nanopores, the microwave-treated nanoporous graphene membrane exhibited ultrafast organic solvent permeance (e.g., IPA: 2278 LMH/bar) with excellent stability under practical cross-flow conditions. Furthermore, the membrane molecular weight cut-off (MWCO) is switchable from 500 Da size of molecule to sub-nanometer-size molecules depending on the solvent type, and this switching occurs spontaneously with solvent change. These properties indicate feasibility of multiple (both binary and ternary) organic mixture separation using a single membrane. The nanochannel structure effect on solvent transport is also investigated using computation calculations.
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spelling pubmed-99358482023-02-18 Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration Kang, Junhyeok Ko, Yeongnam Kim, Jeong Pil Kim, Ju Yeon Kim, Jiwon Kwon, Ohchan Kim, Ki Chul Kim, Dae Woo Nat Commun Article Layered two-dimensional materials can potentially be utilized for organic solvent nanofiltration (OSN) membrane fabrication owing to their precise molecular sieving by the interlayer structure and excellent stability in harsh conditions. Nevertheless, the extensive tortuosity of nanochannels and bulky solvent molecules impede rapid permeability. Herein, nanoporous graphene (NG) with a high density of sp(2) carbon domain was synthesized via sequential thermal pore activation of graphene oxide (GO) and microwave-assisted reduction. Due to the smooth sp(2) carbon domain surfaces and dense nanopores, the microwave-treated nanoporous graphene membrane exhibited ultrafast organic solvent permeance (e.g., IPA: 2278 LMH/bar) with excellent stability under practical cross-flow conditions. Furthermore, the membrane molecular weight cut-off (MWCO) is switchable from 500 Da size of molecule to sub-nanometer-size molecules depending on the solvent type, and this switching occurs spontaneously with solvent change. These properties indicate feasibility of multiple (both binary and ternary) organic mixture separation using a single membrane. The nanochannel structure effect on solvent transport is also investigated using computation calculations. Nature Publishing Group UK 2023-02-17 /pmc/articles/PMC9935848/ /pubmed/36797272 http://dx.doi.org/10.1038/s41467-023-36524-x Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Kang, Junhyeok
Ko, Yeongnam
Kim, Jeong Pil
Kim, Ju Yeon
Kim, Jiwon
Kwon, Ohchan
Kim, Ki Chul
Kim, Dae Woo
Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title_full Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title_fullStr Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title_full_unstemmed Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title_short Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
title_sort microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9935848/
https://www.ncbi.nlm.nih.gov/pubmed/36797272
http://dx.doi.org/10.1038/s41467-023-36524-x
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