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dc.contributor.authorGong, Biyao
dc.contributor.authorYang, Huachao
dc.contributor.authorWu, Shenghao
dc.contributor.authorYan, Jianhua
dc.contributor.authorCen, Kefa
dc.contributor.authorBo, Zheng
dc.contributor.authorOstrikov, Kostya Ken
dc.description.abstractPhotothermal membrane distillation (MD) combining solar harvesting and heat localization is a rapidly emerging technology for water purification and desalination. However, state-of-the-art photothermal MD still suffers from several issues in membrane fouling, material instability, poor long-term performance, and complex synthesis. Herein, we demonstrate a multilevel-roughness membrane by immobilizing a nanoparticle-assembled superstructure on a nanofibrous membrane to obtain omniphobic surface wettability. The nanoparticle-assembled superstructure with abundant nano-/microchannels and low surface energy simultaneously captures solar energy, repels chemical/oil-based contaminants, and facilitates vapor flow. The unique mechanism based on the effects of the multilevel-roughness structure allows effective control of surface wettability, leading to a successful photothermal MD application, highlighted by highly efficient solar-thermal conversion, excellent antifouling behavior, and durability. A high clean water yield of 9.01 kg m–2 h–1 is obtained at a solar intensity of 10 kW m–2, corresponding to a solar-water efficiency of 66.8%. More importantly, when operating in complex feed-water conditions, including oil contaminated and high-saline solution, the speed of clean water generation still presents excellent stability over 48 h of consecutive operation, which significantly outperforms the commercial distillation membranes (typically 1 h). Multiple merits of efficient solar-thermal conversion and long-term stability, supported by techno-economic and scalability analyses, make the composite membrane promising for clean water generation from diverse contaminant mixtures in the solar-driven MD system.
dc.publisherAmerican Chemical Society
dc.relation.ispartofjournalACS Sustainable Chemistry & Engineering
dc.subject.fieldofresearchAnalytical Chemistry
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchChemical Engineering
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsChemistry, Multidisciplinary
dc.subject.keywordsGreen & Sustainable Science & Technology
dc.titleSuperstructure-Enabled Anti-Fouling Membrane for Efficient Photothermal Distillation
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGong, B; Yang, H; Wu, S; Yan, J; Cen, K; Bo, Z; Ostrikov, KK, Superstructure-Enabled Anti-Fouling Membrane for Efficient Photothermal Distillation, ACS Sustainable Chemistry & Engineering, 2019, 7 (24), pp. 20151-20158
gro.hasfulltextNo Full Text
gro.griffith.authorOstrikov, Kostya (Ken)

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