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dc.contributor.authorGong, Biyao
dc.contributor.authorYang, Huachao
dc.contributor.authorWu, Shenghao
dc.contributor.authorXiong, Guoping
dc.contributor.authorYan, Jianhua
dc.contributor.authorCen, Kefa
dc.contributor.authorBo, Zheng
dc.contributor.authorOstrikov, Kostya
dc.date.accessioned2020-01-14T01:32:46Z
dc.date.available2020-01-14T01:32:46Z
dc.date.issued2019
dc.identifier.issn2311-6706
dc.identifier.doi10.1007/s40820-019-0281-1
dc.identifier.urihttp://hdl.handle.net/10072/390207
dc.description.abstractPhotothermal membrane distillation (MD) is a promising technology for desalination and water purification. However, solar-thermal conversion suffers from low energy efficiency (a typical solar-water efficiency of ~ 50%), while complex modifications are needed to reduce membrane fouling. Here, we demonstrate a new concept of solar vapour gap membrane distillation (SVGMD) synergistically combining self-guided water transport, localized heating, and separation of membrane from feed solution. A free-standing, multifunctional light absorber based on graphene array is custom-designed to locally heat the thin water layer transporting through graphene nanochannels. The as-generated vapour passes through a gap and condenses, while salt/contaminants are rejected before reaching the membrane. The high solar-water efficiency (73.4% at 1 sun), clean water collection ratio (82.3%), excellent anti-fouling performance, and stable permeate flux in continuous operation over 72 h are simultaneously achieved. Meanwhile, SVGMD inherits the advantage of MD in microorganism removal and water collection, enabling the solar-water efficiency 3.5 times higher compared to state-of-the-art solar vapour systems. A scaled system to treat oil/seawater mixtures under natural sunlight is developed with a purified water yield of 92.8 kg m−2 day−1. Our results can be applied for diverse mixed-phase feeds, leading to the next-generation solar-driven MD technology.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherShanghai Jiao Tong University Press
dc.relation.ispartofissue1
dc.relation.ispartofjournalNano-Micro Letters
dc.relation.ispartofvolume11
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode1007
dc.subject.keywordsScience & Technology
dc.subject.keywordsTechnology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsNanoscience & Nanotechnology
dc.subject.keywordsMaterials Science, Multidisciplinary
dc.titleGraphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGong, B; Yang, H; Wu, S; Xiong, G; Yan, J; Cen, K; Bo, Z; Ostrikov, K, Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency, Nano-Micro Letters, 2019, 11 (1)
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-01-14T01:28:38Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2019 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorOstrikov, Kostya (Ken)


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