Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface

Ion exchange membranes are widely used for water treatment and ion separation by electrodialysis. One of the ways to increase the efficiency of industrial membranes is their modification with various dopants. To improve the membrane permselectivity, a simple strategy of the membrane surface modifica...

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Detalles Bibliográficos
Autores principales: Stenina, Irina, Yurova, Polina, Achoh, Aslan, Zabolotsky, Victor, Wu, Liang, Yaroslavtsev, Andrey
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919321/
https://www.ncbi.nlm.nih.gov/pubmed/36771946
http://dx.doi.org/10.3390/polym15030647
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author Stenina, Irina
Yurova, Polina
Achoh, Aslan
Zabolotsky, Victor
Wu, Liang
Yaroslavtsev, Andrey
author_facet Stenina, Irina
Yurova, Polina
Achoh, Aslan
Zabolotsky, Victor
Wu, Liang
Yaroslavtsev, Andrey
author_sort Stenina, Irina
collection PubMed
description Ion exchange membranes are widely used for water treatment and ion separation by electrodialysis. One of the ways to increase the efficiency of industrial membranes is their modification with various dopants. To improve the membrane permselectivity, a simple strategy of the membrane surface modification was proposed. Heterogeneous RALEX-CM membranes were surface-modified by ceria with a phosphate-functionalized surface. Despite a decrease in ionic conductivity of the prepared composite membranes, their cation transport numbers slightly increase. Moreover, the modified membranes show a threefold increase in Ca(2+)/Na(+) permselectivity (from 2.1 to 6.1) at low current densities.
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spelling pubmed-99193212023-02-12 Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface Stenina, Irina Yurova, Polina Achoh, Aslan Zabolotsky, Victor Wu, Liang Yaroslavtsev, Andrey Polymers (Basel) Article Ion exchange membranes are widely used for water treatment and ion separation by electrodialysis. One of the ways to increase the efficiency of industrial membranes is their modification with various dopants. To improve the membrane permselectivity, a simple strategy of the membrane surface modification was proposed. Heterogeneous RALEX-CM membranes were surface-modified by ceria with a phosphate-functionalized surface. Despite a decrease in ionic conductivity of the prepared composite membranes, their cation transport numbers slightly increase. Moreover, the modified membranes show a threefold increase in Ca(2+)/Na(+) permselectivity (from 2.1 to 6.1) at low current densities. MDPI 2023-01-27 /pmc/articles/PMC9919321/ /pubmed/36771946 http://dx.doi.org/10.3390/polym15030647 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
Stenina, Irina
Yurova, Polina
Achoh, Aslan
Zabolotsky, Victor
Wu, Liang
Yaroslavtsev, Andrey
Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title_full Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title_fullStr Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title_full_unstemmed Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title_short Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface
title_sort improvement of selectivity of ralex-cm membranes via modification by ceria with a functionalized surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919321/
https://www.ncbi.nlm.nih.gov/pubmed/36771946
http://dx.doi.org/10.3390/polym15030647
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