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Issue 8, 2017, Issue in Progress
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Membrane properties and anti-bacterial/anti-biofouling activity of polysulfone–graphene oxide composite membranes phase inversed in graphene oxide non-solvent

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Abstract

A new and facile method for the fabrication of polysulfone–graphene oxide composite membranes is reported, where after casting, phase inversion is carried out with graphene oxide flakes (GO) in a coagulation bath. The membranes were characterized and the morphology was analysed using scanning electron microscopy. A bacterial inhibition ratio of 74.5% was observed with membranes fabricated from a very low concentration of di-water–GO non-solvent (0.048% of GO). The membranes were successfully tested for permeate flux and fouling resistance using activated sludge filtration from an MBR system. The observed trend shows that GO can operate as a protective barrier for membrane pores against the bacterial community. To our knowledge this is the first time where the immersion precipitation mechanism was carried out in a coagulation bath with GO flakes under continuous stirring. Using this method, a very low concentration of GO is required to fabricate membranes with conventional GO composite membrane properties and better selectivity.

Graphical abstract: Membrane properties and anti-bacterial/anti-biofouling activity of polysulfone–graphene oxide composite membranes phase inversed in graphene oxide non-solvent

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Publication details

The article was received on 10 Oct 2016, accepted on 01 Dec 2016 and first published on 16 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA25015G
Citation: RSC Adv., 2017,7, 4378-4386
  • Open access: Creative Commons BY-NC license
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    Membrane properties and anti-bacterial/anti-biofouling activity of polysulfone–graphene oxide composite membranes phase inversed in graphene oxide non-solvent

    V. R. S. S. Mokkapati, D. Y. Koseoglu-Imer, N. Yilmaz-Deveci, I. Mijakovic and I. Koyuncu, RSC Adv., 2017, 7, 4378
    DOI: 10.1039/C6RA25015G

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