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A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes with Enhanced Desalination and Antibacterial Characteristics.
Sci Rep 2017; 7(1):7490SR

Abstract

A practical fabrication technique is presented to tackle the trade-off between the water flux and salt rejection of thin film composite (TFC) reverse osmosis (RO) membranes through controlled creation of a thinner active selective polyamide (PA) layer. The new thin film nano-composite (TFNC) RO membranes were synthesized with multifunctional poly tannic acid-functionalized graphene oxide nanosheets (pTA-f-GO) embedded in its PA thin active layer, which is produced through interfacial polymerization. The incorporation of pTA-f-GOL into the fabricated TFNC membranes resulted in a thinner PA layer with lower roughness and higher hydrophilicity compared to pristine membrane. These properties enhanced both the membrane water flux (improved by 40%) and salt rejection (increased by 8%) of the TFNC membrane. Furthermore, the incorporation of biocidal pTA-f-GO nanosheets into the PA active layer contributed to improving the antibacterial properties by 80%, compared to pristine membrane. The fabrication of the pTA-f-GO nanosheets embedded in the PA layer presented in this study is a very practical, scalable and generic process that can potentially be applied in different types of separation membranes resulting in less energy consumption, increased cost-efficiency and improved performance.

Authors+Show Affiliations

Natural & Built Environments Research Centre, University of South Australia, Adelaide, SA, 5095, Australia. Institute of Advanced Technology and New Materials, City of Scientific Research and Technological Applications, Borg Elarab, Alexandria, Egypt.Genetic Engineering and Biotechnology Research Institute, University of Sadat City (USC), Sadat City, Egypt. School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.Centre for Pharmaceutical Innovation and Development, University of South Australia, Adelaide, SA, Australia.Future Industries Institute, University of South Australia, Adelaide, SA, 5095, Australia.Natural & Built Environments Research Centre, University of South Australia, Adelaide, SA, 5095, Australia. Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, Abu Dhabi, United Arab Emirates.School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.Natural & Built Environments Research Centre, University of South Australia, Adelaide, SA, 5095, Australia. Future Industries Institute, University of South Australia, Adelaide, SA, 5095, Australia.Future Industries Institute, University of South Australia, Adelaide, SA, 5095, Australia. milena.ginic-markovic@unisa.edu.au.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

28790419

Citation

Hegab, Hanaa M., et al. "A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes With Enhanced Desalination and Antibacterial Characteristics." Scientific Reports, vol. 7, no. 1, 2017, p. 7490.
Hegab HM, ElMekawy A, Barclay TG, et al. A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes with Enhanced Desalination and Antibacterial Characteristics. Sci Rep. 2017;7(1):7490.
Hegab, H. M., ElMekawy, A., Barclay, T. G., Michelmore, A., Zou, L., Losic, D., ... Ginic-Markovic, M. (2017). A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes with Enhanced Desalination and Antibacterial Characteristics. Scientific Reports, 7(1), p. 7490. doi:10.1038/s41598-017-07531-y.
Hegab HM, et al. A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes With Enhanced Desalination and Antibacterial Characteristics. Sci Rep. 2017 08 8;7(1):7490. PubMed PMID: 28790419.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes with Enhanced Desalination and Antibacterial Characteristics. AU - Hegab,Hanaa M, AU - ElMekawy,Ahmed, AU - Barclay,Thomas G, AU - Michelmore,Andrew, AU - Zou,Linda, AU - Losic,Dusan, AU - Saint,Christopher P, AU - Ginic-Markovic,Milena, Y1 - 2017/08/08/ PY - 2017/02/03/received PY - 2017/06/29/accepted PY - 2017/8/10/entrez PY - 2017/8/10/pubmed PY - 2017/8/10/medline SP - 7490 EP - 7490 JF - Scientific reports JO - Sci Rep VL - 7 IS - 1 N2 - A practical fabrication technique is presented to tackle the trade-off between the water flux and salt rejection of thin film composite (TFC) reverse osmosis (RO) membranes through controlled creation of a thinner active selective polyamide (PA) layer. The new thin film nano-composite (TFNC) RO membranes were synthesized with multifunctional poly tannic acid-functionalized graphene oxide nanosheets (pTA-f-GO) embedded in its PA thin active layer, which is produced through interfacial polymerization. The incorporation of pTA-f-GOL into the fabricated TFNC membranes resulted in a thinner PA layer with lower roughness and higher hydrophilicity compared to pristine membrane. These properties enhanced both the membrane water flux (improved by 40%) and salt rejection (increased by 8%) of the TFNC membrane. Furthermore, the incorporation of biocidal pTA-f-GO nanosheets into the PA active layer contributed to improving the antibacterial properties by 80%, compared to pristine membrane. The fabrication of the pTA-f-GO nanosheets embedded in the PA layer presented in this study is a very practical, scalable and generic process that can potentially be applied in different types of separation membranes resulting in less energy consumption, increased cost-efficiency and improved performance. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/28790419/A_Novel_Fabrication_Approach_for_Multifunctional_Graphene_based_Thin_Film_Nano_composite_Membranes_with_Enhanced_Desalination_and_Antibacterial_Characteristics_ L2 - http://dx.doi.org/10.1038/s41598-017-07531-y DB - PRIME DP - Unbound Medicine ER -