Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 483, Issue -, Pages 128-135Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2015.02.045
Keywords
Graphene oxide; Reverse osmosis; Anti-biofouling; Chlorine resistance
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Funding
- National Research Foundation of Korea (NRF) - Korean Government (MSIP) [NRF-2010-C1AAA001-0029061]
- Research Institute of Advanced Materials (RIAM) in Seoul National University
- National Research Foundation of Korea [21A20130011104, 2010-0029075] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We demonstrated that a thin-film composite (TFC) membrane with graphene oxide (GO) embedded in its polyamide (PA) layer exhibited high water permeability, anti-biofouling property, and chlorine resistance without loss of salt rejection. The GO fabricated by chemical exfoliation was fractionated for size control, and then the fractionated GO was dispersed in an aqueous solution of m-phenylenediamine (MPD) before interfacial polymerization. The water permeability and anti-biolouling property of the GO-embedded TFC (GO-TFC) membrane were enhanced by approximately 80% and 98% (based on the biovolume), respectively, and high salt rejection was retained even at 48,000 ppm h chlorination. Compared with the TFC membrane, the enhanced performances of the GO-TFC membrane were attributed to the change of hyclrophilicity, surface charge, surface roughness, and thickness of the PA layer through the incorporation of GO. Both the size and the concentration of GO were the key factors in improving the performance of the GO-TFC membrane. (C) 2015 Elsevier B.V. All rights reserved
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