Thermally-induced pore size tuning of multilayer nanoporous graphene for organic solvent nanofiltration

Junhyeok Kang; Yunkyu Choi; Jeong Pil Kim; Ji Hoon Kim; Ju Yeon Kim; Ohchan Kwon; David Inhyuk Kim; Dae Woo Kim

doi:10.1016/j.memsci.2021.119620

Thermally-induced pore size tuning of multilayer nanoporous graphene for organic solvent nanofiltration

Junhyeok Kang, Yunkyu Choi, Jeong Pil Kim, Ji Hoon Kim, Ju Yeon Kim, Ohchan Kwon, David Inhyuk Kim, Dae Woo Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Graphene-based materials have been used for fabricating organic solvent nanofiltration membranes due to their excellent mechanical properties and chemical stability in organic solvents. However, graphene membranes exhibit low organic solvent permeation properties due to the large molecular size of the organic solvent molecules and their strong interactions with the graphene surface. Herein, a nanoporous graphene membrane was fabricated to enhance organic solvent permeation. Nanopores were generated on the basal plane of graphene by rapid thermal annealing of graphene oxide. The size of the nanopores was also tuned from micropores to nanopores by adjusting the activation temperatures. The optimized nanoporous graphene membrane showed ultrafast isopropyl alcohol permeance up to 295 Lm⁻²h⁻¹bar⁻¹ and a sharp molecular weight cut-off of 616 Da. The membrane showed excellent stability and diafiltration performance under cross-flow filtration with a separation factor of around 1000 for dye molecules mixed in isopropyl alcohol.

Original language	English
Article number	119620
Journal	Journal of Membrane Science
Volume	637
DOIs	https://doi.org/10.1016/j.memsci.2021.119620
Publication status	Published - 2021 Nov 1

Bibliographical note

Funding Information:
This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) ( NRF-2020R1C1C1003289 ), the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education ( NRF-2019R1A6A1A11055660 ), and also in part by Samsung Electronics. This research was supported by an internal grant (code: 20200543 ) form the Korea Institute of Civil Engineering and Building Technology (KICT) .

Publisher Copyright:
© 2021 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Biochemistry
Materials Science(all)
Physical and Theoretical Chemistry
Filtration and Separation

Access to Document

10.1016/j.memsci.2021.119620

Cite this

@article{4dac1771840746d9941a7b3d9b84db69,

title = "Thermally-induced pore size tuning of multilayer nanoporous graphene for organic solvent nanofiltration",

abstract = "Graphene-based materials have been used for fabricating organic solvent nanofiltration membranes due to their excellent mechanical properties and chemical stability in organic solvents. However, graphene membranes exhibit low organic solvent permeation properties due to the large molecular size of the organic solvent molecules and their strong interactions with the graphene surface. Herein, a nanoporous graphene membrane was fabricated to enhance organic solvent permeation. Nanopores were generated on the basal plane of graphene by rapid thermal annealing of graphene oxide. The size of the nanopores was also tuned from micropores to nanopores by adjusting the activation temperatures. The optimized nanoporous graphene membrane showed ultrafast isopropyl alcohol permeance up to 295 Lm−2h−1bar−1 and a sharp molecular weight cut-off of 616 Da. The membrane showed excellent stability and diafiltration performance under cross-flow filtration with a separation factor of around 1000 for dye molecules mixed in isopropyl alcohol.",

author = "Junhyeok Kang and Yunkyu Choi and Kim, {Jeong Pil} and Kim, {Ji Hoon} and Kim, {Ju Yeon} and Ohchan Kwon and Kim, {David Inhyuk} and Kim, {Dae Woo}",

note = "Funding Information: This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) ( NRF-2020R1C1C1003289 ), the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education ( NRF-2019R1A6A1A11055660 ), and also in part by Samsung Electronics. This research was supported by an internal grant (code: 20200543 ) form the Korea Institute of Civil Engineering and Building Technology (KICT) . Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = nov,

day = "1",

doi = "10.1016/j.memsci.2021.119620",

language = "English",

volume = "637",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier",

}

TY - JOUR

T1 - Thermally-induced pore size tuning of multilayer nanoporous graphene for organic solvent nanofiltration

AU - Kang, Junhyeok

AU - Choi, Yunkyu

AU - Kim, Jeong Pil

AU - Kim, Ji Hoon

AU - Kim, Ju Yeon

AU - Kwon, Ohchan

AU - Kim, David Inhyuk

AU - Kim, Dae Woo

N1 - Funding Information: This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) ( NRF-2020R1C1C1003289 ), the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education ( NRF-2019R1A6A1A11055660 ), and also in part by Samsung Electronics. This research was supported by an internal grant (code: 20200543 ) form the Korea Institute of Civil Engineering and Building Technology (KICT) . Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - Graphene-based materials have been used for fabricating organic solvent nanofiltration membranes due to their excellent mechanical properties and chemical stability in organic solvents. However, graphene membranes exhibit low organic solvent permeation properties due to the large molecular size of the organic solvent molecules and their strong interactions with the graphene surface. Herein, a nanoporous graphene membrane was fabricated to enhance organic solvent permeation. Nanopores were generated on the basal plane of graphene by rapid thermal annealing of graphene oxide. The size of the nanopores was also tuned from micropores to nanopores by adjusting the activation temperatures. The optimized nanoporous graphene membrane showed ultrafast isopropyl alcohol permeance up to 295 Lm−2h−1bar−1 and a sharp molecular weight cut-off of 616 Da. The membrane showed excellent stability and diafiltration performance under cross-flow filtration with a separation factor of around 1000 for dye molecules mixed in isopropyl alcohol.

AB - Graphene-based materials have been used for fabricating organic solvent nanofiltration membranes due to their excellent mechanical properties and chemical stability in organic solvents. However, graphene membranes exhibit low organic solvent permeation properties due to the large molecular size of the organic solvent molecules and their strong interactions with the graphene surface. Herein, a nanoporous graphene membrane was fabricated to enhance organic solvent permeation. Nanopores were generated on the basal plane of graphene by rapid thermal annealing of graphene oxide. The size of the nanopores was also tuned from micropores to nanopores by adjusting the activation temperatures. The optimized nanoporous graphene membrane showed ultrafast isopropyl alcohol permeance up to 295 Lm−2h−1bar−1 and a sharp molecular weight cut-off of 616 Da. The membrane showed excellent stability and diafiltration performance under cross-flow filtration with a separation factor of around 1000 for dye molecules mixed in isopropyl alcohol.

UR - http://www.scopus.com/inward/record.url?scp=85110516830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85110516830&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2021.119620

DO - 10.1016/j.memsci.2021.119620

M3 - Article

AN - SCOPUS:85110516830

SN - 0376-7388

VL - 637

JO - Journal of Membrane Science

JF - Journal of Membrane Science

M1 - 119620

ER -

Thermally-induced pore size tuning of multilayer nanoporous graphene for organic solvent nanofiltration

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this