Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution
Two-dimensional (2D) hexagonal boron nitride (h-BN) nanosheets being isostructural to graphene, manifests robust properties for water treatment. However, it exhibits lower dispersibility in polar solvents limiting its utilization for membrane application. A facile two-step processes of (1) exfoliati...
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Elsevier B.V.
2020
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| _version_ | 1796864957446356992 |
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| author | Hafeez, Asif Abdul Karim, Zulhairun Ismail, Ahmad Fauzi Samavati, Alireza Mohammad Said, Khairul Anwar Selambakkannu, Sarala |
| author_facet | Hafeez, Asif Abdul Karim, Zulhairun Ismail, Ahmad Fauzi Samavati, Alireza Mohammad Said, Khairul Anwar Selambakkannu, Sarala |
| author_sort | Hafeez, Asif |
| collection | ePrints |
| description | Two-dimensional (2D) hexagonal boron nitride (h-BN) nanosheets being isostructural to graphene, manifests robust properties for water treatment. However, it exhibits lower dispersibility in polar solvents limiting its utilization for membrane application. A facile two-step processes of (1) exfoliation of h-BN with urea followed by grafting polyethylene glycol using 3-Aminopropyl triethoxysilane to synthesize polyethylene glycol grafted boron nitride PEG-g-(NH2)BN and (2) deposition of as-fabricated nanosheets on the support membrane through vacuum filtration is carried. In the first step, the process leads to 6–14 layered amine-functionalized boron nitride BN(NH2) nanosheets of ~47 nm diameter and the later results of ~53 nm PEG-g-(NH2)BN nanosheets. In the second step, the deposition thickness was tuned through varying the concentration of the PEG-g-(NH2)BN nanosheet colloidal solution. The final functionalization imparts enhanced surface wettability through the transformation of superhydrophobic h-BN to superhydrophilic PEG-g-(NH2)BN. Improved wettability and porosity results in ultra-high water flux of 1253 L m−2 h−1 bar−1. Higher hydrodynamic resistance through the increasing thickness of deposited PEG-g-(NH2)BN nanosheets from approximately 3 μm–12 μm, results in permeance decrease from 1253 L m−2 h−1 bar−1 to 840 L m−2 h−1 bar−1 (about 33% decrement) and the MB exclusion improved to 98% removal even under different pH conditions. The exclusion properties of these membranes were tested stable with charge-neutral molecules. |
| first_indexed | 2024-03-05T20:49:42Z |
| format | Article |
| id | utm.eprints-90081 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:49:42Z |
| publishDate | 2020 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-900812021-03-31T05:04:29Z http://eprints.utm.my/90081/ Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution Hafeez, Asif Abdul Karim, Zulhairun Ismail, Ahmad Fauzi Samavati, Alireza Mohammad Said, Khairul Anwar Selambakkannu, Sarala TP Chemical technology Two-dimensional (2D) hexagonal boron nitride (h-BN) nanosheets being isostructural to graphene, manifests robust properties for water treatment. However, it exhibits lower dispersibility in polar solvents limiting its utilization for membrane application. A facile two-step processes of (1) exfoliation of h-BN with urea followed by grafting polyethylene glycol using 3-Aminopropyl triethoxysilane to synthesize polyethylene glycol grafted boron nitride PEG-g-(NH2)BN and (2) deposition of as-fabricated nanosheets on the support membrane through vacuum filtration is carried. In the first step, the process leads to 6–14 layered amine-functionalized boron nitride BN(NH2) nanosheets of ~47 nm diameter and the later results of ~53 nm PEG-g-(NH2)BN nanosheets. In the second step, the deposition thickness was tuned through varying the concentration of the PEG-g-(NH2)BN nanosheet colloidal solution. The final functionalization imparts enhanced surface wettability through the transformation of superhydrophobic h-BN to superhydrophilic PEG-g-(NH2)BN. Improved wettability and porosity results in ultra-high water flux of 1253 L m−2 h−1 bar−1. Higher hydrodynamic resistance through the increasing thickness of deposited PEG-g-(NH2)BN nanosheets from approximately 3 μm–12 μm, results in permeance decrease from 1253 L m−2 h−1 bar−1 to 840 L m−2 h−1 bar−1 (about 33% decrement) and the MB exclusion improved to 98% removal even under different pH conditions. The exclusion properties of these membranes were tested stable with charge-neutral molecules. Elsevier B.V. 2020-10 Article PeerReviewed Hafeez, Asif and Abdul Karim, Zulhairun and Ismail, Ahmad Fauzi and Samavati, Alireza and Mohammad Said, Khairul Anwar and Selambakkannu, Sarala (2020) Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution. Journal of Membrane Science, 612 . p. 118473. ISSN 0376-7388 http://dx.doi.org/10.1016/j.memsci.2020.118473 |
| spellingShingle | TP Chemical technology Hafeez, Asif Abdul Karim, Zulhairun Ismail, Ahmad Fauzi Samavati, Alireza Mohammad Said, Khairul Anwar Selambakkannu, Sarala Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title | Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title_full | Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title_fullStr | Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title_full_unstemmed | Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title_short | Functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| title_sort | functionalized boron nitride composite ultrafiltration membrane for dye removal from aqueous solution |
| topic | TP Chemical technology |
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