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dc.contributor.authorRamanan, Sankara Narayanan
dc.date.accessioned2018-05-23T20:19:19Z
dc.date.available2018-05-23T20:19:19Z
dc.date.issued2017
dc.identifier.isbn9780355308921
dc.identifier.other1979456579
dc.identifier.urihttp://hdl.handle.net/10477/77430
dc.description.abstractStimuli-responsive membranes have been widely explored to mitigate fouling on the membrane surface to achieve stable performance of water purification. Herein, we demonstrate a facile one-step coating of photo-mobile materials on membrane surface to impart self-cleaning property upon exposure alternatively to ultraviolet (UV) and visible light. Specifically, we successfully co-deposited photo-mobile 4,4’-azodianiline (AZO) and a bio-adhesive polydopamine (PDA) on the surface of ultrafiltration (UF) membranes. The effect of the coating layer on the surface hydrophilicity and pure water permeance was systematically evaluated. The photoresponsive properties of AZO in solutions and thin films with PDA was characterized using UV-Vis absorption spectroscopy. When shed with UV light, AZO undergoes photoisomerization from trans- AZO to cis -AZO, increasing surface hydrophilicity and decreasing the volume, while the exposure to visible light enables the transition from the cis- to trans- configuration. The resulted self-cleaning behavior of the modified membranes is demonstrated in treating 1 g/L bovine serum albumin (BSA) solution. For example, the self-cleaning of UF membranes increased water flux by ~160% when the membranes were challenged with the BSA solution.
dc.languageEnglish
dc.sourceDissertations & Theses @ SUNY Buffalo,ProQuest Dissertations & Theses Global
dc.subjectApplied sciences
dc.subjectAzobenzene
dc.subjectPhotoresponsive materials
dc.subjectPolydopamine
dc.subjectSelf-cleaning membranes
dc.subjectWater purification
dc.titleSelf-Cleaning Membranes for Water Purification by Codeposition of Photo-Mobile 4,4'-Azodianiline and Bio-Adhesive Polydopamine
dc.typeDissertation/Thesis


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