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Membranes
Volume 13
Issue 3
10.3390/membranes13030253
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Article

Surface Modification of UiO-66 on Hollow Fibre Membrane for Membrane Distillation

by
Noor Fadilah Yusof
1,
Amirul Afiat Raffi
1,
Nur Zhatul Shima Yahaya
1,
Khairul Hamimah Abas
2,
Mohd Hafiz Dzarfan Othman
1,
Juhana Jaafar
1 and
Mukhlis A. Rahman
1,*
1
Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
2
Department of Control & Instrumentation Engineering, School of Electrical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
*
Author to whom correspondence should be addressed.
Membranes 2023, 13(3), 253; https://doi.org/10.3390/membranes13030253
Submission received: 31 December 2022 / Revised: 13 February 2023 / Accepted: 14 February 2023 / Published: 21 February 2023
(This article belongs to the Special Issue Membrane Science towards Sustainable Development Goals (SDGs))
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Abstract

The hydrophobicity of metal–organic frameworks (MOFs) is critical in enhancing the separation process in membrane distillation. Herein, a new superhydrophobic University of Oslo 66 (UiO-66) MOFs was successfully constructed on the top of alumina hollow fibre (AHF) membrane for desalination purposes. The fabrication methodology of the membrane involved in situ growth of pure crystalline UiO-66 on top of AHF and post-synthetic modification by fluorosilane grafting. The resultant membrane was characterised to study the physicochemical properties of the pristine and modified membrane. A superhydrophobic UiO-66 with a contact angle of 163.6° and high liquid entry pressure was obtained by introducing a highly branched fluorocarbon chain while maintaining its crystallinity. As a result, the modified membrane achieved 14.95 L/m2∙h water flux and 99.9% NaCl rejection with low energy consumption in the direct contact membrane distillation process. Furthermore, the high surface energy contributed by UiO-66 is maximised to produce the maximum number of accessible sites for the grafting process. The synergistic effect of surface hydrophobicity and porous UiO-66 membrane in trapping water vapour shows great potential for desalination application.
Keywords: metal–organic frameworks; UiO-66; hydrophobicity modification; membrane distillation metal–organic frameworks; UiO-66; hydrophobicity modification; membrane distillation
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MDPI and ACS Style

Yusof, N.F.; Raffi, A.A.; Yahaya, N.Z.S.; Abas, K.H.; Othman, M.H.D.; Jaafar, J.; Rahman, M.A. Surface Modification of UiO-66 on Hollow Fibre Membrane for Membrane Distillation. Membranes 2023, 13, 253. https://doi.org/10.3390/membranes13030253

AMA Style

Yusof NF, Raffi AA, Yahaya NZS, Abas KH, Othman MHD, Jaafar J, Rahman MA. Surface Modification of UiO-66 on Hollow Fibre Membrane for Membrane Distillation. Membranes. 2023; 13(3):253. https://doi.org/10.3390/membranes13030253

Chicago/Turabian Style

Yusof, Noor Fadilah, Amirul Afiat Raffi, Nur Zhatul Shima Yahaya, Khairul Hamimah Abas, Mohd Hafiz Dzarfan Othman, Juhana Jaafar, and Mukhlis A. Rahman. 2023. "Surface Modification of UiO-66 on Hollow Fibre Membrane for Membrane Distillation" Membranes 13, no. 3: 253. https://doi.org/10.3390/membranes13030253

APA Style

Yusof, N. F., Raffi, A. A., Yahaya, N. Z. S., Abas, K. H., Othman, M. H. D., Jaafar, J., & Rahman, M. A. (2023). Surface Modification of UiO-66 on Hollow Fibre Membrane for Membrane Distillation. Membranes, 13(3), 253. https://doi.org/10.3390/membranes13030253

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