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Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell

This research aimed to develop a simple and cost-effective method for fabricating electropositive membranes for highly efficient water filtration. Electropositive membranes are novel functional membranes with electropositive properties and can filter electronegative viruses and bacteria using electr...

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Autores principales: Choi, Dalsu, Lee, Cheol Ho, Lee, Han Bi, Lee, Min Wook, Jo, Seong Mu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10223967/
https://www.ncbi.nlm.nih.gov/pubmed/37242846
http://dx.doi.org/10.3390/polym15102270
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author Choi, Dalsu
Lee, Cheol Ho
Lee, Han Bi
Lee, Min Wook
Jo, Seong Mu
author_facet Choi, Dalsu
Lee, Cheol Ho
Lee, Han Bi
Lee, Min Wook
Jo, Seong Mu
author_sort Choi, Dalsu
collection PubMed
description This research aimed to develop a simple and cost-effective method for fabricating electropositive membranes for highly efficient water filtration. Electropositive membranes are novel functional membranes with electropositive properties and can filter electronegative viruses and bacteria using electrostatic attraction. Because electropositive membranes do not rely on physical filtration, they exhibit high flux characteristics compared with conventional membranes. This study presents a simple dipping process for fabricating boehmite/SiO(2)/PVDF electropositive membranes by modifying an electrospun SiO(2)/PVDF host membrane using electropositive boehmite nanoparticles (NPs). The surface modification enhanced the filtration performance of the membrane, as revealed by electronegatively charged polystyrene (PS) NPs as a bacteria model. The boehmite/SiO(2)/PVDF electropositive membrane, with an average pore size of 0.30 μm, could successfully filter out 0.20 μm PS particles. The rejection rate was comparable to that of Millipore GSWP, a commercial filter with a pore size of 0.22 μm, which can filter out 0.20 μm particles via physical sieving. In addition, the water flux of the boehmite/SiO(2)/PVDF electropositive membrane was twice that of Millipore GSWP, demonstrating the potential of the electropositive membrane in water purification and disinfection.
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spelling pubmed-102239672023-05-28 Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell Choi, Dalsu Lee, Cheol Ho Lee, Han Bi Lee, Min Wook Jo, Seong Mu Polymers (Basel) Article This research aimed to develop a simple and cost-effective method for fabricating electropositive membranes for highly efficient water filtration. Electropositive membranes are novel functional membranes with electropositive properties and can filter electronegative viruses and bacteria using electrostatic attraction. Because electropositive membranes do not rely on physical filtration, they exhibit high flux characteristics compared with conventional membranes. This study presents a simple dipping process for fabricating boehmite/SiO(2)/PVDF electropositive membranes by modifying an electrospun SiO(2)/PVDF host membrane using electropositive boehmite nanoparticles (NPs). The surface modification enhanced the filtration performance of the membrane, as revealed by electronegatively charged polystyrene (PS) NPs as a bacteria model. The boehmite/SiO(2)/PVDF electropositive membrane, with an average pore size of 0.30 μm, could successfully filter out 0.20 μm PS particles. The rejection rate was comparable to that of Millipore GSWP, a commercial filter with a pore size of 0.22 μm, which can filter out 0.20 μm particles via physical sieving. In addition, the water flux of the boehmite/SiO(2)/PVDF electropositive membrane was twice that of Millipore GSWP, demonstrating the potential of the electropositive membrane in water purification and disinfection. MDPI 2023-05-11 /pmc/articles/PMC10223967/ /pubmed/37242846 http://dx.doi.org/10.3390/polym15102270 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Choi, Dalsu
Lee, Cheol Ho
Lee, Han Bi
Lee, Min Wook
Jo, Seong Mu
Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title_full Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title_fullStr Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title_full_unstemmed Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title_short Electropositive Membrane Prepared via a Simple Dipping Process: Exploiting Electrostatic Attraction Using Electrospun SiO(2)/PVDF Membranes with Electronegative SiO(2) Shell
title_sort electropositive membrane prepared via a simple dipping process: exploiting electrostatic attraction using electrospun sio(2)/pvdf membranes with electronegative sio(2) shell
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10223967/
https://www.ncbi.nlm.nih.gov/pubmed/37242846
http://dx.doi.org/10.3390/polym15102270
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