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    Are vacuum-filtrated reduced graphene oxide membranes symmetric?

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    Just accepted Manuscript for Are vacuum-filtrated reduced graphene oxide membranes symmetric.pdf
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    Description:
    Accepted Manuscript
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    Type
    Article
    Authors
    Tang, Bo cc
    Zhang, Lianbin cc
    Li, Renyuan cc
    Wu, Jinbo
    Hedhili, Mohamed N. cc
    Wang, Peng cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Imaging and Characterization Core Lab
    Surface Science
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2016
    Permanent link to this record
    http://hdl.handle.net/10754/595300
    
    Metadata
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    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.
    Citation
    Are vacuum-filtrated reduced graphene oxide membranes symmetric? 2016, 8 (2):1108 Nanoscale
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Nanoscale
    DOI
    10.1039/C5NR06797A
    PubMed ID
    26667828
    Additional Links
    http://xlink.rsc.org/?DOI=C5NR06797A
    ae974a485f413a2113503eed53cd6c53
    10.1039/C5NR06797A
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Water Desalination and Reuse Research Center (WDRC)

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