Graphene-based materials for photocatalysis and membrane filtration

Usuma Naknikham, Elena Marino (Editor), Vittorio Boffa, Yuanzheng Yue

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Abstract

Over the past years, membrane filtration has emerged as highly efficient water purification technology . However, the problems related to the fouling and the disposal of the toxic concentrate are still limiting factors for membrane application. Graphene oxide (GO) membranes show superior water permeability and good selectivity towards organic pollutants. Moreover, they can be easily fabricated in the nanometer thickness. In addition, the coupling of GO with titanium dioxide allows to fabricate photocatalysts which can adsorb visible light and that have outstanding photodegradation activity. In this study, we prepared GO photocatalytic membranes by vacuum filtration technique. GO and GO-titanium dioxide membranes were prepare by filtered GO suspension in different concentration though the 0.22 μm pore size of mixed cellulose ester (MCE) filter and dry at room temperature. In addition, the layer by layer technique for membrane fabrication was used to compare with single step filtration membrane preparation. We characterized structure, filtration ability and photocatalytic performances of these new materials. Hence, we optimized their fabrication procedure.
Original languageEnglish
Title of host publicationThe Center for membrane technology at Aalborg university on behalf of the Nordic Filtration Society
Number of pages1
Publication date2018
Publication statusPublished - 2018
EventTHE 17TH NORDIC FILTRATION SYMPOSIUM -
Duration: 29 Aug 201830 Sept 2018
https://www.nofs17.aau.dk/

Conference

ConferenceTHE 17TH NORDIC FILTRATION SYMPOSIUM
Period29/08/201830/09/2018
Internet address

Keywords

  • membrane
  • photocatalysts
  • filtration
  • graphene

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