Graphene oxide incorporated polysulfone substrate for the fabrication of flat-sheet thin-film composite forward osmosis membranes

Park, MJ; Phuntsho, S; He, T; Nisola, GM; Tijing, LD; Li, XM; Chen, G; Chung, WJ; Shon, HK

Graphene oxide incorporated polysulfone substrate for the fabrication of flat-sheet thin-film composite forward osmosis membranes

Park, MJ Phuntsho, S

He, T Nisola, GM Tijing, LD

Li, XM Chen, G Chung, WJ Shon, HK

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Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2015, 493 pp. 496 - 507
Issue Date:: 2015-11-01

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Field	Value	Language
dc.contributor.author	Park, MJ	en_US
dc.contributor.author	Phuntsho, S https://orcid.org/0000-0002-3917-3916	en_US
dc.contributor.author	He, T	en_US
dc.contributor.author	Nisola, GM	en_US
dc.contributor.author	Tijing, LD https://orcid.org/0000-0001-9398-6355	en_US
dc.contributor.author	Li, XM	en_US
dc.contributor.author	Chen, G	en_US
dc.contributor.author	Chung, WJ	en_US
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.date.available	2020-05-25T19:28:37Z
dc.date.issued	2015-11-01	en_US
dc.identifier.citation	Journal of Membrane Science, 2015, 493 pp. 496 - 507	en_US
dc.identifier.issn	0376-7388	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36900
dc.description.abstract	© 2015 Elsevier B.V. The preparation and performances of the newly synthesized thin film composite (TFC) forward osmosis (FO) membranes with graphene oxide (GO)-modified support layer are presented in this study. GO nanosheets were incorporated in the polysulfone (PSf) to obtain PSf/GO composite membrane support layer. Polyamide (PA) active layer was subsequently formed on the PSf/GO by interfacial polymerization to obtain the TFC-FO membranes. Results reveal that at an optimal amount of GO addition (0.25wt%), a PSf/GO composite support layer with favorable structural property measured in terms of thickness, porosity and pore size can be achieved. The optimum incorporation of GO in the PSF support layer not only significantly improved water permeability but also allowed effective PA layer formation, in comparison to that of pure PSf support layer which had much lower water permeability. Thus, a TFC-FO membrane with high water flux (19.77Lm<sup>-2</sup>h<sup>-1</sup> against 6.08Lm<sup>-2</sup>h<sup>-1</sup> for pure PSf) and reverse flux selectivity (5.75Lg<sup>-1</sup> against 3.36Lg<sup>-1</sup> for pure PSf) was obtained under the active layer facing the feed solution or AL-FS membrane orientation. Besides the improved structural properties (reduced structural parameter, S) of the support layer, enhanced support hydrophilicity also contributed to the improved water permeability of the membrane. Beyond a certain point of GO addition (≥0.5wt%), the poor dispersion of GO in dope solution and significant structure change resulted in lower water permeation and weaker mechanical properties in support as well as FO flux/selectivity of consequent TFC membrane. Overall, this study suggests that GO modification of membrane supports could be a promising technique to improve the performances of TFC-FO membranes.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP140100835
dc.relation.ispartof	Journal of Membrane Science	en_US
dc.relation.isbasedon	10.1016/j.memsci.2015.06.053	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Graphene oxide incorporated polysulfone substrate for the fabrication of flat-sheet thin-film composite forward osmosis membranes	en_US
dc.type	Journal Article
utslib.citation.volume	493	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	090409 Wastewater Treatment Processes	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	493	en_US

Abstract:

© 2015 Elsevier B.V. The preparation and performances of the newly synthesized thin film composite (TFC) forward osmosis (FO) membranes with graphene oxide (GO)-modified support layer are presented in this study. GO nanosheets were incorporated in the polysulfone (PSf) to obtain PSf/GO composite membrane support layer. Polyamide (PA) active layer was subsequently formed on the PSf/GO by interfacial polymerization to obtain the TFC-FO membranes. Results reveal that at an optimal amount of GO addition (0.25wt%), a PSf/GO composite support layer with favorable structural property measured in terms of thickness, porosity and pore size can be achieved. The optimum incorporation of GO in the PSF support layer not only significantly improved water permeability but also allowed effective PA layer formation, in comparison to that of pure PSf support layer which had much lower water permeability. Thus, a TFC-FO membrane with high water flux (19.77Lm^-2h^-1 against 6.08Lm^-2h^-1 for pure PSf) and reverse flux selectivity (5.75Lg^-1 against 3.36Lg^-1 for pure PSf) was obtained under the active layer facing the feed solution or AL-FS membrane orientation. Besides the improved structural properties (reduced structural parameter, S) of the support layer, enhanced support hydrophilicity also contributed to the improved water permeability of the membrane. Beyond a certain point of GO addition (≥0.5wt%), the poor dispersion of GO in dope solution and significant structure change resulted in lower water permeation and weaker mechanical properties in support as well as FO flux/selectivity of consequent TFC membrane. Overall, this study suggests that GO modification of membrane supports could be a promising technique to improve the performances of TFC-FO membranes.

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http://hdl.handle.net/10453/36900