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Layer-by-layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications.
ACS Appl Mater Interfaces 2013; 5(23):12510-9AA

Abstract

Improving membrane durability associated with fouling and chlorine resistance remains one of the major challenges in desalination membrane technology. Here, we demonstrate that attractive features of graphene oxide (GO) nanosheets such as high hydrophilicity, chemical robustness, and ultrafast water permeation can be harnessed for a dual-action barrier coating layer that enhances resistance to both fouling and chlorine-induced degradation of polyamide (PA) thin-film composite (TFC) membranes while preserving their separation performance. GO multilayers were coated on the PA-TFC membrane surfaces via layer-by-layer (LbL) deposition of oppositely charged GO nanosheets. Consequently, it was shown that the conformal GO coating layer can increase the surface hydrophilicity and reduce the surface roughness, leading to the significantly improved antifouling performance against a protein foulant. It was also demonstrated that the chemically inert nature of GO nanosheets enables the GO coating layer to act as a chlorine barrier for the underlying PA membrane, resulting in a profound suppression of the membrane degradation in salt rejection upon chlorine exposure.

Authors+Show Affiliations

Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24219033

Citation

Choi, Wansuk, et al. "Layer-by-layer Assembly of Graphene Oxide Nanosheets On Polyamide Membranes for Durable Reverse-osmosis Applications." ACS Applied Materials & Interfaces, vol. 5, no. 23, 2013, pp. 12510-9.
Choi W, Choi J, Bang J, et al. Layer-by-layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications. ACS Appl Mater Interfaces. 2013;5(23):12510-9.
Choi, W., Choi, J., Bang, J., & Lee, J. H. (2013). Layer-by-layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications. ACS Applied Materials & Interfaces, 5(23), pp. 12510-9. doi:10.1021/am403790s.
Choi W, et al. Layer-by-layer Assembly of Graphene Oxide Nanosheets On Polyamide Membranes for Durable Reverse-osmosis Applications. ACS Appl Mater Interfaces. 2013 Dec 11;5(23):12510-9. PubMed PMID: 24219033.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Layer-by-layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications. AU - Choi,Wansuk, AU - Choi,Jungkyu, AU - Bang,Joona, AU - Lee,Jung-Hyun, Y1 - 2013/11/21/ PY - 2013/11/14/entrez PY - 2013/11/14/pubmed PY - 2013/11/14/medline SP - 12510 EP - 9 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 5 IS - 23 N2 - Improving membrane durability associated with fouling and chlorine resistance remains one of the major challenges in desalination membrane technology. Here, we demonstrate that attractive features of graphene oxide (GO) nanosheets such as high hydrophilicity, chemical robustness, and ultrafast water permeation can be harnessed for a dual-action barrier coating layer that enhances resistance to both fouling and chlorine-induced degradation of polyamide (PA) thin-film composite (TFC) membranes while preserving their separation performance. GO multilayers were coated on the PA-TFC membrane surfaces via layer-by-layer (LbL) deposition of oppositely charged GO nanosheets. Consequently, it was shown that the conformal GO coating layer can increase the surface hydrophilicity and reduce the surface roughness, leading to the significantly improved antifouling performance against a protein foulant. It was also demonstrated that the chemically inert nature of GO nanosheets enables the GO coating layer to act as a chlorine barrier for the underlying PA membrane, resulting in a profound suppression of the membrane degradation in salt rejection upon chlorine exposure. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/24219033/Layer_by_layer_assembly_of_graphene_oxide_nanosheets_on_polyamide_membranes_for_durable_reverse_osmosis_applications_ L2 - https://dx.doi.org/10.1021/am403790s DB - PRIME DP - Unbound Medicine ER -