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Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment

Smart tuning of the membrane's porous nanostructures offers an effective strategy for creating state-of-the-art, high-performance separation membranes. In aqueous solution, polyethylene glycol (PEG) grafted boron nitride PEGX-g-(f-BN) nanosheets exhibit high permeance and excellent molecular si...

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Main Authors: Hafeez, Asif, Abdul Karim, Zulhairun, Ismail, Ahmad Fauzi, Jamil, Asif, Mohammad Said, Khairul Anwar, Ali, Abulhassan
Format: Article
Published: Elsevier Ltd 2022
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TP Chemical technology
Online Access:http://eprints.utm.my/103159/
http://dx.doi.org/10.1016/j.chemosphere.2022.135066
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spelling my.utm.1031592023-11-13T04:55:44Z http://eprints.utm.my/103159/ Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment Hafeez, Asif Abdul Karim, Zulhairun Ismail, Ahmad Fauzi Jamil, Asif Mohammad Said, Khairul Anwar Ali, Abulhassan TP Chemical technology Smart tuning of the membrane's porous nanostructures offers an effective strategy for creating state-of-the-art, high-performance separation membranes. In aqueous solution, polyethylene glycol (PEG) grafted boron nitride PEGX-g-(f-BN) nanosheets exhibit high permeance and excellent molecular sieving. The molecular selectivity of the PEGX-g-(f-BN) lamellar membrane is controlled by the nanopores, which can be tuned by modulating the interplanar spacing between the nanosheets. Herein, the interplanar spacing of h-BN nanosheets is enhanced in the range of 0.334–0.348 nm through grafting different molecular weight PEG. Moreover, the grafted PEG instigates a synergistic effect on the nanosheets in two ways. Firstly, through PEG intercalation, the interlayer spacing of the (002) plane could be adjusted without significant deterioration to the hexagonal crystallographic structure. Secondly, intercalated PEG in BN nanosheets reflects in terms of improved h-BN wettability through transformation to hydrophilic surface characteristics (small contact angle of 36–39°). The fabricated PEGX-g-(f-BN) lamellar membrane acquires stable and interconnected nanopores and nanochannels with an average pore diameter of 1.36–2.19 nm. Permeance-exclusion trade-off manipulation through methodical approaches of PEGX-g-(f-BN) decoration thickness and interplanar spacing is exploited to build a better understanding of water transport behavior. PEGX-g-(f-BN) lamellar membranes show unprecedented permeance of ~1253 L m-2 h-1 bar-1 with a steady methyl blue (MB) exclusion of 98.9% even in different pH conditions. Elsevier Ltd 2022 Article PeerReviewed Hafeez, Asif and Abdul Karim, Zulhairun and Ismail, Ahmad Fauzi and Jamil, Asif and Mohammad Said, Khairul Anwar and Ali, Abulhassan (2022) Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment. Chemosphere, 303 (NA). pp. 1-13. ISSN 0045-6535 http://dx.doi.org/10.1016/j.chemosphere.2022.135066 DOI : 10.1016/j.chemosphere.2022.135066
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Hafeez, Asif
Abdul Karim, Zulhairun
Ismail, Ahmad Fauzi
Jamil, Asif
Mohammad Said, Khairul Anwar
Ali, Abulhassan
Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
description Smart tuning of the membrane's porous nanostructures offers an effective strategy for creating state-of-the-art, high-performance separation membranes. In aqueous solution, polyethylene glycol (PEG) grafted boron nitride PEGX-g-(f-BN) nanosheets exhibit high permeance and excellent molecular sieving. The molecular selectivity of the PEGX-g-(f-BN) lamellar membrane is controlled by the nanopores, which can be tuned by modulating the interplanar spacing between the nanosheets. Herein, the interplanar spacing of h-BN nanosheets is enhanced in the range of 0.334–0.348 nm through grafting different molecular weight PEG. Moreover, the grafted PEG instigates a synergistic effect on the nanosheets in two ways. Firstly, through PEG intercalation, the interlayer spacing of the (002) plane could be adjusted without significant deterioration to the hexagonal crystallographic structure. Secondly, intercalated PEG in BN nanosheets reflects in terms of improved h-BN wettability through transformation to hydrophilic surface characteristics (small contact angle of 36–39°). The fabricated PEGX-g-(f-BN) lamellar membrane acquires stable and interconnected nanopores and nanochannels with an average pore diameter of 1.36–2.19 nm. Permeance-exclusion trade-off manipulation through methodical approaches of PEGX-g-(f-BN) decoration thickness and interplanar spacing is exploited to build a better understanding of water transport behavior. PEGX-g-(f-BN) lamellar membranes show unprecedented permeance of ~1253 L m-2 h-1 bar-1 with a steady methyl blue (MB) exclusion of 98.9% even in different pH conditions.
format Article
author Hafeez, Asif
Abdul Karim, Zulhairun
Ismail, Ahmad Fauzi
Jamil, Asif
Mohammad Said, Khairul Anwar
Ali, Abulhassan
author_facet Hafeez, Asif
Abdul Karim, Zulhairun
Ismail, Ahmad Fauzi
Jamil, Asif
Mohammad Said, Khairul Anwar
Ali, Abulhassan
author_sort Hafeez, Asif
title Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
title_short Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
title_full Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
title_fullStr Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
title_full_unstemmed Tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
title_sort tuneable molecular selective boron nitride nanosheet ultrafiltration lamellar membrane for dye exclusion to remediate the environment
publisher Elsevier Ltd
publishDate 2022
url http://eprints.utm.my/103159/
http://dx.doi.org/10.1016/j.chemosphere.2022.135066
_version_ 1783876352922877952
score 13.211869

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