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Stable superhydrophobic ceramic-based carbon nanotube composite desalination membranes

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Show simple item record Dong, Yingchao Ma, Lining Tang, Chuyang Y. Yang, Fenglin Quan, Xie Jassby, David Zaworotko, Michael J. Guiver, Michael Dominic 2020-02-28T14:41:12Z 2020-02-28T14:41:12Z 2018
dc.description peer-reviewed en_US
dc.description.abstract Membrane distillation (MD) is a promising process for the treatment of highly saline wastewaters. The central component of MD is a stable porous hydrophobic membrane with a large liquid–vapor interface for efficient water vapor transport. A key challenge for current polymeric or hydrophobically modified inorganic membranes is insufficient operating stability, resulting in some issues such as wetting, fouling, flux, and rejection decline. This study presents an overall conceptual design and application strategy for a superhydrophobic ceramic–based carbon nanotube (CNT) desalination membrane having specially designed membrane structures with unprecedented operating stability and MD performance. Superporous and superhydrophobic surface structures with CNT networks are created after quantitative regulation of in situ grown CNT. The fully covered CNT layers (FC–CNT) exhibit significantly improved thermally and superhydrophobically stable properties under an accelerated stability test. Due to the distinctive structure of the superporous surface network, providing a large liquid–vapor superhydrophobic interface and interior finger-like macrovoids, the FC–CNT membrane exhibits a stable high flux with a 99.9% rejection of Na+, outperforming existing inorganic membranes. Under simple and nondestructive electrochemically assisted direct contact MD (e-DCMD), enhanced antifouling performance is observed. The design strategy is broadly applicable to be extended toward fabrication of high performance membranes derived from other ceramic or inorganic substrates and additional applications in wastewater and gas treatment. en_US
dc.language.iso eng en_US
dc.publisher American Chemical Society en_US
dc.relation.ispartofseries Nano Letters;18 (9), pp. 5514-5521
dc.rights © 2018 ACS This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see en_US
dc.subject membrane distillation en_US
dc.subject ceramic membrane en_US
dc.subject carbon nanotube en_US
dc.subject operating stability en_US
dc.subject superhydrophobicity en_US
dc.title Stable superhydrophobic ceramic-based carbon nanotube composite desalination membranes en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1021/acs.nanolett.8b01907
dc.contributor.sponsor Fundamental Research Funds for the Central Universities en_US
dc.contributor.sponsor Nature Science Foundation en_US
dc.relation.projectid DUT16RC(3)050 en_US
dc.relation.projectid DUT18LAB02 en_US
dc.relation.projectid 2015J06013 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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