The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes
Graphene oxide (GO) can be processed into carbon membranes with unique water permeability and molecular selectivity. Metal-organic frameworks (MOFs) have been proposed as filler materials to enhance water permeability of laminar GO-based carbon membranes. However, it remains unclear how the enhancem...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/151077 |
| _version_ | 1826129933300137984 |
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| author | Sui, Xiao Ding, Hongru Yuan, Ziwen Leong, Chanel F. Goh, Kunli Li, Wei Yang, Nuo D'Alessandro, Deanna M. Chen, Yuan |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Sui, Xiao Ding, Hongru Yuan, Ziwen Leong, Chanel F. Goh, Kunli Li, Wei Yang, Nuo D'Alessandro, Deanna M. Chen, Yuan |
| author_sort | Sui, Xiao |
| collection | NTU |
| description | Graphene oxide (GO) can be processed into carbon membranes with unique water permeability and molecular selectivity. Metal-organic frameworks (MOFs) have been proposed as filler materials to enhance water permeability of laminar GO-based carbon membranes. However, it remains unclear how the enhancement arises. Herein, we combined experimental and molecular simulation studies to provide critical insights into the water transport behaviors of GO/MOF composite membranes. The water permeability enhancement was found to be directly correlated to the increase in the average interlayer spacing between GO nanosheets. The simulation results indicate a slower water transport through nanochannels in MOFs than in nanochannels formed by GO nanosheets. A small amount of MOF particles only serves as a blockage in laminar GO membranes, suppressing their water permeability. In contrast, a large amount of MOF particles increases the interlayer spacing between GO nanosheets and creates very fast water transport stretches. Besides, some large gaps are formed between non-smooth MOF particles and GO nanosheets, adding supplementary water channels to deliver higher water permeability. We envision a shift in future research direction to exploit the selective adsorption capacity of MOFs other than leveraging them as fast water transport channels to realize their potential water treatment applications. |
| first_indexed | 2024-10-01T07:48:19Z |
| format | Journal Article |
| id | ntu-10356/151077 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:48:19Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1510772021-06-03T01:06:34Z The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes Sui, Xiao Ding, Hongru Yuan, Ziwen Leong, Chanel F. Goh, Kunli Li, Wei Yang, Nuo D'Alessandro, Deanna M. Chen, Yuan School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Chemical engineering Graphene Oxide Metal-organic Framework Graphene oxide (GO) can be processed into carbon membranes with unique water permeability and molecular selectivity. Metal-organic frameworks (MOFs) have been proposed as filler materials to enhance water permeability of laminar GO-based carbon membranes. However, it remains unclear how the enhancement arises. Herein, we combined experimental and molecular simulation studies to provide critical insights into the water transport behaviors of GO/MOF composite membranes. The water permeability enhancement was found to be directly correlated to the increase in the average interlayer spacing between GO nanosheets. The simulation results indicate a slower water transport through nanochannels in MOFs than in nanochannels formed by GO nanosheets. A small amount of MOF particles only serves as a blockage in laminar GO membranes, suppressing their water permeability. In contrast, a large amount of MOF particles increases the interlayer spacing between GO nanosheets and creates very fast water transport stretches. Besides, some large gaps are formed between non-smooth MOF particles and GO nanosheets, adding supplementary water channels to deliver higher water permeability. We envision a shift in future research direction to exploit the selective adsorption capacity of MOFs other than leveraging them as fast water transport channels to realize their potential water treatment applications. The authors thank funding support from Australian Research Council under the Future Fellowships scheme (FT160100107 to Y.C. and FT170100283 to D.M.D.), Discovery Programme (DP180102210 to Y.C. and DP180103874 to D.M.D.), The University of Sydney Nano Institute under the Research Collaboration Award. H. D. also acknowledges support from the Australian Endeavour Leadership Program. 2021-06-03T01:06:34Z 2021-06-03T01:06:34Z 2019 Journal Article Sui, X., Ding, H., Yuan, Z., Leong, C. F., Goh, K., Li, W., Yang, N., D'Alessandro, D. M. & Chen, Y. (2019). The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes. Carbon, 148, 277-289. https://dx.doi.org/10.1016/j.carbon.2019.03.049 0008-6223 0000-0003-1579-6825 0000-0001-5499-5187 0000-0003-0973-1718 0000-0001-9059-3839 https://hdl.handle.net/10356/151077 10.1016/j.carbon.2019.03.049 2-s2.0-85063992198 148 277 289 en Carbon © 2019 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Graphene Oxide Metal-organic Framework Sui, Xiao Ding, Hongru Yuan, Ziwen Leong, Chanel F. Goh, Kunli Li, Wei Yang, Nuo D'Alessandro, Deanna M. Chen, Yuan The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title | The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title_full | The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title_fullStr | The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title_full_unstemmed | The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title_short | The roles of metal-organic frameworks in modulating water permeability of graphene oxide-based carbon membranes |
| title_sort | roles of metal organic frameworks in modulating water permeability of graphene oxide based carbon membranes |
| topic | Engineering::Chemical engineering Graphene Oxide Metal-organic Framework |
| url | https://hdl.handle.net/10356/151077 |
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