Ultrafast-Selective Nanofiltration of an Hybrid Membrane Comprising Laminated Reduced Graphene Oxide/Graphene Oxide Nanoribbons

Kyeong Min Cho, Hyeong Jin Lee, Yoon Tae Nam, Yong Jae Kim, Chansol Kim, Kyoung Min Kang, Claudio Adrian Ruiz Torres, Dae Woo Kim, Hee Tae Jung

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study, reduced graphene oxide (rGO) and graphene oxide nanoribbons (GONRs) are used to fabricate a composite membrane that exhibits ultrafast water permeance (312.8 L m-2 h-1 bar-1) and precise molecular separation (molecular weight cutoff: 269 Da), which surpass the upper bound of previously reported polymer and graphene-based nanofiltration membranes. As two-dimensional GONR exhibits a width on the scale of nanometers, its nanochannels can be enlarged without hindering the stacking of rGO. Moreover, abundant oxygen-containing groups on the edge and surface of GONR enhance the electrostatic interactions between the filtered molecules and the membrane nanochannel. By the synergistic effect, rejection and water flux are considerably increased. Owing to the chemically stable nature of rGO, the composite membrane is highly stable in aqueous media (from acidic to alkaline) and is recyclable during repeated filtration tests.

Original languageEnglish
Pages (from-to)27004-27010
Number of pages7
JournalACS Applied Materials and Interfaces
Volume11
Issue number30
DOIs
Publication statusPublished - 2019 Jul 31

Fingerprint

Nanoribbons
Nanofiltration
Carbon Nanotubes
Graphite
Oxides
Graphene
Membranes
Composite membranes
Nanofiltration membranes
Water
Coulomb interactions
Polymers
Molecular weight
Oxygen
Fluxes
Molecules

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Cho, Kyeong Min ; Lee, Hyeong Jin ; Nam, Yoon Tae ; Kim, Yong Jae ; Kim, Chansol ; Kang, Kyoung Min ; Ruiz Torres, Claudio Adrian ; Kim, Dae Woo ; Jung, Hee Tae. / Ultrafast-Selective Nanofiltration of an Hybrid Membrane Comprising Laminated Reduced Graphene Oxide/Graphene Oxide Nanoribbons. In: ACS Applied Materials and Interfaces. 2019 ; Vol. 11, No. 30. pp. 27004-27010.
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abstract = "In this study, reduced graphene oxide (rGO) and graphene oxide nanoribbons (GONRs) are used to fabricate a composite membrane that exhibits ultrafast water permeance (312.8 L m-2 h-1 bar-1) and precise molecular separation (molecular weight cutoff: 269 Da), which surpass the upper bound of previously reported polymer and graphene-based nanofiltration membranes. As two-dimensional GONR exhibits a width on the scale of nanometers, its nanochannels can be enlarged without hindering the stacking of rGO. Moreover, abundant oxygen-containing groups on the edge and surface of GONR enhance the electrostatic interactions between the filtered molecules and the membrane nanochannel. By the synergistic effect, rejection and water flux are considerably increased. Owing to the chemically stable nature of rGO, the composite membrane is highly stable in aqueous media (from acidic to alkaline) and is recyclable during repeated filtration tests.",
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Ultrafast-Selective Nanofiltration of an Hybrid Membrane Comprising Laminated Reduced Graphene Oxide/Graphene Oxide Nanoribbons. / Cho, Kyeong Min; Lee, Hyeong Jin; Nam, Yoon Tae; Kim, Yong Jae; Kim, Chansol; Kang, Kyoung Min; Ruiz Torres, Claudio Adrian; Kim, Dae Woo; Jung, Hee Tae.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 30, 31.07.2019, p. 27004-27010.

Research output: Contribution to journalArticle

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AU - Cho, Kyeong Min

AU - Lee, Hyeong Jin

AU - Nam, Yoon Tae

AU - Kim, Yong Jae

AU - Kim, Chansol

AU - Kang, Kyoung Min

AU - Ruiz Torres, Claudio Adrian

AU - Kim, Dae Woo

AU - Jung, Hee Tae

PY - 2019/7/31

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