Are vacuum-filtrated reduced graphene oxide membranes symmetric?

Handle URI:
http://hdl.handle.net/10754/595300
Title:
Are vacuum-filtrated reduced graphene oxide membranes symmetric?
Authors:
Tang, Bo ( 0000-0001-9522-627X ) ; Zhang, Lianbin ( 0000-0002-8548-1506 ) ; Li, Renyuan ( 0000-0003-1943-9403 ) ; Wu, Jinbo; Hedhili, Mohamed Neijib; Wang, Peng ( 0000-0003-0856-0865 )
Abstract:
Graphene or reduced graphene oxide (rGO) membrane-based materials are promising for many advanced applications due to their exceptional properties. One of the most widely used synthesis methods for rGO membranes is vacuum filtration of graphene oxide (GO) on a filter membrane, followed by reduction, which shows great advantages such as operational convenience and good controllability. Despite vacuum-filtrated rGO membranes being widely used in many applications, a fundamental question is overlooked: are the top and bottom surfaces of the membranes formed at the interfaces with air and with the filter membrane respectively symmetric or asymmetric? This work, for the first time, reports the asymmetry of the vacuum-filtrated rGO membranes and discloses the filter membranes’ physical imprint on the bottom surface of the rGO membrane, which takes place when the filter membrane surface pores have similar dimension to GO sheets. This result points out that the asymmetric surface properties should be cautiously taken into consideration while designing the surface-related applications for GO and rGO membranes.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division; Imaging and Characterization Core Lab
Citation:
Are vacuum-filtrated reduced graphene oxide membranes symmetric? 2016, 8 (2):1108 Nanoscale
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
2-Dec-2015
DOI:
10.1039/C5NR06797A
Type:
Article
ISSN:
2040-3364; 2040-3372
Additional Links:
http://xlink.rsc.org/?DOI=C5NR06797A
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorTang, Boen
dc.contributor.authorZhang, Lianbinen
dc.contributor.authorLi, Renyuanen
dc.contributor.authorWu, Jinboen
dc.contributor.authorHedhili, Mohamed Neijiben
dc.contributor.authorWang, Pengen
dc.date.accessioned2016-01-31T14:33:23Zen
dc.date.available2016-01-31T14:33:23Zen
dc.date.issued2015-12-02en
dc.identifier.citationAre vacuum-filtrated reduced graphene oxide membranes symmetric? 2016, 8 (2):1108 Nanoscaleen
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.doi10.1039/C5NR06797Aen
dc.identifier.urihttp://hdl.handle.net/10754/595300en
dc.description.abstractGraphene or reduced graphene oxide (rGO) membrane-based materials are promising for many advanced applications due to their exceptional properties. One of the most widely used synthesis methods for rGO membranes is vacuum filtration of graphene oxide (GO) on a filter membrane, followed by reduction, which shows great advantages such as operational convenience and good controllability. Despite vacuum-filtrated rGO membranes being widely used in many applications, a fundamental question is overlooked: are the top and bottom surfaces of the membranes formed at the interfaces with air and with the filter membrane respectively symmetric or asymmetric? This work, for the first time, reports the asymmetry of the vacuum-filtrated rGO membranes and discloses the filter membranes’ physical imprint on the bottom surface of the rGO membrane, which takes place when the filter membrane surface pores have similar dimension to GO sheets. This result points out that the asymmetric surface properties should be cautiously taken into consideration while designing the surface-related applications for GO and rGO membranes.en
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://xlink.rsc.org/?DOI=C5NR06797Aen
dc.rightsArchived with thanks to Nanoscaleen
dc.titleAre vacuum-filtrated reduced graphene oxide membranes symmetric?en
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalNanoscaleen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhang, Lianbinen
kaust.authorTang, Boen
kaust.authorLi, Renyuanen
kaust.authorWu, Jinboen
kaust.authorHedhili, Mohamed N.en
kaust.authorWang, Pengen
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