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Facile Preparation of a Laponite/PVA Mixed Matrix Membrane for Efficient and Sustainable Pervaporative Dehydration of C1–C3 Alcohols
[Image: see text] The exfoliation method was applied for the preparation of high-water selective mixed matrix membranes (MMMs), especially for the dehydration of C1–C3 alcohol–water solutions. Herein, a facile and easy method was employed to fabricate physically cross-linked Laponite nanosilicate cl...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7758899/ https://www.ncbi.nlm.nih.gov/pubmed/33376874 http://dx.doi.org/10.1021/acsomega.0c04380 |
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author | Selim, Asmaa Toth, András Jozsef Fozer, Daniel Süvegh, Karoly Mizsey, Péter |
author_facet | Selim, Asmaa Toth, András Jozsef Fozer, Daniel Süvegh, Karoly Mizsey, Péter |
author_sort | Selim, Asmaa |
collection | PubMed |
description | [Image: see text] The exfoliation method was applied for the preparation of high-water selective mixed matrix membranes (MMMs), especially for the dehydration of C1–C3 alcohol–water solutions. Herein, a facile and easy method was employed to fabricate physically cross-linked Laponite nanosilicate clay–PVA MMMs without additional cross-linking by a one-step synthesis route for water dehydration from methanol, ethanol, and isopropanol aqueous solutions. The morphologies, chemical structures, thermal stabilities, and surface hydrophilicity of Laponite–PVA MMMs were investigated properly by different characterization techniques. The Laponite concentration has affected the fractional free volume of the membranes, as proven by positron annihilation lifetime spectroscopy analysis. The MMMs displayed both a significant improvement in the separation factor and remarkable enhancement in the permeation fluxes for the three alcohol systems. The influence of the operating temperature on the MMM performance was investigated for the methanol/water solution. The methanol permeability was 100-fold lower than that of the water, indicating that the membranes are more water selective. Particularly, the Laponite–PVA membrane with 5 mg/mL Laponite loading exhibits excellent separation efficiency for C1–C3 dehydration having water permeabilities higher than most other polymeric membranes from the other literature studies of 2.82, 2.08, and 1.56 mg m(–1) h(–1) kPa(–1) for methanol, ethanol, and isopropanol/water systems, respectively. This membrane development allows a more efficient and sustainable separation of aqueous alcoholic mixtures. |
format | Online Article Text |
id | pubmed-7758899 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-77588992020-12-28 Facile Preparation of a Laponite/PVA Mixed Matrix Membrane for Efficient and Sustainable Pervaporative Dehydration of C1–C3 Alcohols Selim, Asmaa Toth, András Jozsef Fozer, Daniel Süvegh, Karoly Mizsey, Péter ACS Omega [Image: see text] The exfoliation method was applied for the preparation of high-water selective mixed matrix membranes (MMMs), especially for the dehydration of C1–C3 alcohol–water solutions. Herein, a facile and easy method was employed to fabricate physically cross-linked Laponite nanosilicate clay–PVA MMMs without additional cross-linking by a one-step synthesis route for water dehydration from methanol, ethanol, and isopropanol aqueous solutions. The morphologies, chemical structures, thermal stabilities, and surface hydrophilicity of Laponite–PVA MMMs were investigated properly by different characterization techniques. The Laponite concentration has affected the fractional free volume of the membranes, as proven by positron annihilation lifetime spectroscopy analysis. The MMMs displayed both a significant improvement in the separation factor and remarkable enhancement in the permeation fluxes for the three alcohol systems. The influence of the operating temperature on the MMM performance was investigated for the methanol/water solution. The methanol permeability was 100-fold lower than that of the water, indicating that the membranes are more water selective. Particularly, the Laponite–PVA membrane with 5 mg/mL Laponite loading exhibits excellent separation efficiency for C1–C3 dehydration having water permeabilities higher than most other polymeric membranes from the other literature studies of 2.82, 2.08, and 1.56 mg m(–1) h(–1) kPa(–1) for methanol, ethanol, and isopropanol/water systems, respectively. This membrane development allows a more efficient and sustainable separation of aqueous alcoholic mixtures. American Chemical Society 2020-12-07 /pmc/articles/PMC7758899/ /pubmed/33376874 http://dx.doi.org/10.1021/acsomega.0c04380 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Selim, Asmaa Toth, András Jozsef Fozer, Daniel Süvegh, Karoly Mizsey, Péter Facile Preparation of a Laponite/PVA Mixed Matrix Membrane for Efficient and Sustainable Pervaporative Dehydration of C1–C3 Alcohols |
title | Facile Preparation of a Laponite/PVA
Mixed Matrix
Membrane for Efficient and Sustainable Pervaporative Dehydration of
C1–C3 Alcohols |
title_full | Facile Preparation of a Laponite/PVA
Mixed Matrix
Membrane for Efficient and Sustainable Pervaporative Dehydration of
C1–C3 Alcohols |
title_fullStr | Facile Preparation of a Laponite/PVA
Mixed Matrix
Membrane for Efficient and Sustainable Pervaporative Dehydration of
C1–C3 Alcohols |
title_full_unstemmed | Facile Preparation of a Laponite/PVA
Mixed Matrix
Membrane for Efficient and Sustainable Pervaporative Dehydration of
C1–C3 Alcohols |
title_short | Facile Preparation of a Laponite/PVA
Mixed Matrix
Membrane for Efficient and Sustainable Pervaporative Dehydration of
C1–C3 Alcohols |
title_sort | facile preparation of a laponite/pva
mixed matrix
membrane for efficient and sustainable pervaporative dehydration of
c1–c3 alcohols |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7758899/ https://www.ncbi.nlm.nih.gov/pubmed/33376874 http://dx.doi.org/10.1021/acsomega.0c04380 |
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