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    Polyethersulfone/Graphene Oxide Ultrafiltration Membranes from Solutions in Ionic Liquid

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    polyethersulfonegraphene_oxide_ultrafiltration_membranes_from_solutions_in_ionic_liquid.pdf
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    Type
    Article
    Authors
    Mahalingam, Dinesh cc
    Kim, Dooli cc
    Nunes, Suzana. P.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Date
    2017-07-18
    Online Publication Date
    2017-07-18
    Print Publication Date
    2017
    Permanent link to this record
    http://hdl.handle.net/10754/625257
    
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    Abstract
    Novel high flux polyethersulfone (PES) ultrafiltration membranes were fabricated by incorporating different amounts of graphene oxide (GO) sheets to PES as nanofillers. The membranes were prepared from solutions in 50/50 1-ethyl-3-methylimidazolium-diethylphosphate/N,N-dimethyl formamide. It was observed that the water permeance increased from 550 to 800 L m-2h-1bar-1, with incorporation of 1 wt% GO, keeping a molecular weight cut-off (MWCO) of approximately 32-34 kg mol-1. Cross-sectional scanning electron microscopy images of GO/PES membranes showed the formation of ultrathin selective layer unlike pristine membranes. Contact angle measurements confirmed the increase of hydrophilicity, by increasing the GO concentration. The rejection of humic acid and bovine serum albumin was demonstrated. The mechanical properties were improved, compared with the pristine membranes. The performance was just above the trade-off relationship between permeance and separation factor for PES membranes reported in the literature.
    Citation
    Mahalingam DK, Kim D, Nunes SP (2017) Polyethersulfone/Graphene Oxide Ultrafiltration Membranes from Solutions in Ionic Liquid. MRS Advances: 1–7. Available: http://dx.doi.org/10.1557/adv.2017.492.
    Sponsors
    This work was sponsored by King Abdullah University of Science and Technology (KAUST). The authors thank Dr. Mahendra Kumar (KAUST) for his assistance in GO synthesis and Prof. Mainak Majumder for discussions in the early stage of this work.
    Publisher
    Cambridge University Press (CUP)
    Journal
    MRS Advances
    DOI
    10.1557/adv.2017.492
    Additional Links
    https://www.cambridge.org/core/journals/mrs-advances/article/polyethersulfonegraphene-oxide-ultrafiltration-membranes-from-solutions-in-ionic-liquid/EE9ED319050A1020F6357786B8A6C3A2
    ae974a485f413a2113503eed53cd6c53
    10.1557/adv.2017.492
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program

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