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Core-shell graphene...
Core-shell graphene oxide-polymer hollow fibers as water filters with enhanced performance and selectivity
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- Kovtun, Alessandro (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Bianchi, Antonio (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Zambianchi, Massimo (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Bettini, Cristian (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Corticelli, Franco (author)
- Istituto per la Microelettronica e Microsistemi (IMM-CNR),Institute for Microelectronics and Microsystems (IMM-CNR)
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- Ruani, Giampiero (author)
- Consiglio Nazionale delle Ricerche (CNR),National Research Council of Italy (CNR)
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Bocchi, Letizia (author)
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Stante, Francesco (author)
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- Gazzano, Massimo (author)
- Consiglio Nazionale delle Ricerche (CNR),National Research Council of Italy (CNR)
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- Marforio, Tainah Dorina (author)
- Universita di Bologna,University of Bologna
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- Calvaresi, Matteo (author)
- Universita di Bologna,University of Bologna
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- Minelli, Matteo (author)
- Universita di Bologna,University of Bologna
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- Navacchia, Maria Luisa (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Palermo, Vincenzo, 1972 (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR),Chalmers tekniska högskola,Chalmers University of Technology
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- Melucci, Manuela (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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(creator_code:org_t)
- 2021
- 2021
- English.
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In: Faraday Discussions. - : Royal Society of Chemistry (RSC). - 1359-6640 .- 1364-5498. ; 227, s. 274-290
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https://pubs.rsc.org...
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https://doi.org/10.1...
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Abstract
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- Commercial hollow fiber filters for micro- and ultrafiltration are based on size exclusion and do not allow the removal of small molecules such as antibiotics. Here, we demonstrate that a graphene oxide (GO) layer can be firmly immobilized either inside or outside polyethersulfone-polyvinylpyrrolidone hollow fiber (Versatile PES (R), hereafter PES) modules and that the resulting core-shell fibers inherits the microfiltration ability of the pristine PES fibers and the adsorption selectivity of GO. GO nanosheets were deposited on the fiber surface by filtration of a GO suspension through a PES cartridge (cut-off 0.1-0.2 mu m), then fixed by thermal annealing at 80 degrees C, rendering the GO coating stably fixed and unsoluble. The filtration cut-off, retention selectivity and efficiency of the resulting inner and outer modified hollow fibers (HF-GO) were tested by performing filtration on water and bovine plasma spiked with bovine serum albumin (BSA, 66 kDa, approximate to 15 nm size), monodisperse polystyrene nanoparticles (52 nm and 303 nm sizes), with two quinolonic antibiotics (ciprofloxacin and ofloxacin) and rhodamine B (RhB). These tests showed that the microfiltration capability of PES was retained by HF-GO, and in addition the GO coating can capture the molecular contaminants while letting through BSA and smaller polystyrene nanoparticles. Combined XRD, molecular modelling and adsorption experiments show that the separation mechanism does not rely only on physical size exclusion, but involves intercalation of solute molecules between the GO layers.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Kovtun, Alessand ...
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Bianchi, Antonio
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Zambianchi, Mass ...
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Bettini, Cristia ...
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Corticelli, Fran ...
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Ruani, Giampiero
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show more...
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Bocchi, Letizia
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Stante, Francesc ...
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Gazzano, Massimo
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Marforio, Tainah ...
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Calvaresi, Matte ...
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Minelli, Matteo
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Navacchia, Maria ...
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Palermo, Vincenz ...
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Melucci, Manuela
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Polymer Technolo ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
- Articles in the publication
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Faraday Discussi ...
- By the university
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Chalmers University of Technology