Thin-film composite forward osmosis membranes functionalized with graphene oxide–silver nanocomposites for biofouling control

Faria, AF; Liu, C; Xie, M; Perreault, F; Nghiem, LD; Ma, J; Elimelech, M

Thin-film composite forward osmosis membranes functionalized with graphene oxide–silver nanocomposites for biofouling control

Faria, AF Liu, C Xie, M Perreault, F Nghiem, LD

Ma, J Elimelech, M

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Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2017, 525 pp. 146 - 156
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Faria, AF	en_US
dc.contributor.author	Liu, C	en_US
dc.contributor.author	Xie, M	en_US
dc.contributor.author	Perreault, F	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.contributor.author	Ma, J	en_US
dc.contributor.author	Elimelech, M	en_US
dc.date.available	2020-05-25T19:01:21Z
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Journal of Membrane Science, 2017, 525 pp. 146 - 156	en_US
dc.identifier.issn	0376-7388	en_US
dc.identifier.uri	http://hdl.handle.net/10453/124916
dc.description.abstract	© 2016 Elsevier B.V. Innovative approaches to prevent bacterial attachment and biofilm growth on membranes are critically needed to avoid decreasing membrane performance due to biofouling. In this study, we propose the fabrication of anti-biofouling thin-film composite membranes functionalized with graphene oxide–silver nanocomposites. In our membrane modification strategy, carboxyl groups on the graphene oxide–silver nanosheets are covalently bonded to carboxyl groups on the surface of thin-film composite membranes via a crosslinking reaction. Further characterization, such as scanning electron microscopy and Raman spectroscopy, revealed the immobilization of graphene oxide–silver nanocomposites on the membrane surface. Graphene oxide–silver modified membranes exhibited an 80% inactivation rate against attached Pseudomonas aeruginosa cells. In addition to a static antimicrobial assay, our study also provided insights on the anti-biofouling property of forward osmosis membranes during dynamic operation in a cross-flow test cell. Functionalization with graphene oxide–silver nanocomposites resulted in a promising anti-biofouling property without sacrificing the membrane intrinsic transport properties. Our results demonstrated that the use of graphene oxide–silver nanocomposites is a feasible and attractive approach for the development of anti-biofouling thin-film composite membranes.	en_US
dc.relation.ispartof	Journal of Membrane Science	en_US
dc.relation.isbasedon	10.1016/j.memsci.2016.10.040	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Thin-film composite forward osmosis membranes functionalized with graphene oxide–silver nanocomposites for biofouling control	en_US
dc.type	Journal Article
utslib.citation.volume	525	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0904 Chemical Engineering	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	525	en_US

Abstract:

© 2016 Elsevier B.V. Innovative approaches to prevent bacterial attachment and biofilm growth on membranes are critically needed to avoid decreasing membrane performance due to biofouling. In this study, we propose the fabrication of anti-biofouling thin-film composite membranes functionalized with graphene oxide–silver nanocomposites. In our membrane modification strategy, carboxyl groups on the graphene oxide–silver nanosheets are covalently bonded to carboxyl groups on the surface of thin-film composite membranes via a crosslinking reaction. Further characterization, such as scanning electron microscopy and Raman spectroscopy, revealed the immobilization of graphene oxide–silver nanocomposites on the membrane surface. Graphene oxide–silver modified membranes exhibited an 80% inactivation rate against attached Pseudomonas aeruginosa cells. In addition to a static antimicrobial assay, our study also provided insights on the anti-biofouling property of forward osmosis membranes during dynamic operation in a cross-flow test cell. Functionalization with graphene oxide–silver nanocomposites resulted in a promising anti-biofouling property without sacrificing the membrane intrinsic transport properties. Our results demonstrated that the use of graphene oxide–silver nanocomposites is a feasible and attractive approach for the development of anti-biofouling thin-film composite membranes.

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http://hdl.handle.net/10453/124916