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    Implications of Chemical Reduction Using Hydriodic Acid on the Antimicrobial Properties of Graphene Oxide and Reduced Graphene Oxide Membranes.

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    Manuscript_accepted_Small.pdf
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    Type
    Article
    Authors
    Alayande, Abayomi Babatunde
    Park, Hee-Deung
    Vrouwenvelder, Johannes S. cc
    Kim, In S
    KAUST Department
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2019-05-30
    Embargo End Date
    2020-06-01
    Permanent link to this record
    http://hdl.handle.net/10754/656402
    
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    Abstract
    The antimicrobial properties of graphene-based membranes such as single-layer graphene oxide (GO) and modified graphene oxide (rGO) on top of cellulose ester membrane are reported in this study. rGO membranes are made from GO by hydriodic acid (HI) vapor treatment. The antibacterial properties are tested after 3 h contact time with selected model bacteria. Complete bacterial cell inactivation is found only after contact with rGO membranes, while no significant bacterial inactivation is found for the control i) GO membrane, ii) the mixed cellulose ester support, and the iii) rGO membrane after additional washing that removes the remaining HI. This indicates that the antimicrobial effect is neither caused by the graphene nor the membrane support. The antimicrobial effect is found to be conclusively linked to the HI eliminating microbial growth, at concentrations from 0.005%. These findings emphasize the importance of caution in the reporting of antimicrobial properties of graphene-based surfaces.
    Citation
    Alayande, A. B., Park, H., Vrouwenvelder, J. S., & Kim, I. S. (2019). Implications of Chemical Reduction Using Hydriodic Acid on the Antimicrobial Properties of Graphene Oxide and Reduced Graphene Oxide Membranes. Small, 1901023. doi:10.1002/smll.201901023
    Sponsors
    This work was supported by the Korea Environmental Industry & Technology Institute (KEITI) through Industrial Facilities & Infrastructure Research program, funded by the Korea Ministry of Environment (MOE) (RE201901124 and RE201901110).
    Publisher
    Wiley
    Journal
    Small (Weinheim an der Bergstrasse, Germany)
    DOI
    10.1002/smll.201901023
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201901023
    ae974a485f413a2113503eed53cd6c53
    10.1002/smll.201901023
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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