Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system
© 2016 Elsevier B.V. Solvent resistant nanofiltration (SRNF) technology is an energy efficient and environmentally friendly alternative to purify alcohol-based mixtures, but there exists a challenge in overcoming the trade-off between membrane flux and rejection. Herein, as the representative of the...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier BV
2016
|
| Online Access: | http://hdl.handle.net/20.500.11937/70968 |
| _version_ | 1848762353684840448 |
|---|---|
| author | Wu, X. Hao, L. Zhang, J. Zhang, X. Wang, J. Liu, Jian |
| author_facet | Wu, X. Hao, L. Zhang, J. Zhang, X. Wang, J. Liu, Jian |
| author_sort | Wu, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 Elsevier B.V. Solvent resistant nanofiltration (SRNF) technology is an energy efficient and environmentally friendly alternative to purify alcohol-based mixtures, but there exists a challenge in overcoming the trade-off between membrane flux and rejection. Herein, as the representative of the emerging family of MXenes, Ti3C2Tx nanosheets with abundant -OH groups are chosen as nanofillers to prepare SRNF composite membrane after being incorporated into two typical polymer matrixes: hydrophilic polyethyleneimine (PEI) and hydrophobic polydimethylsiloxane (PDMS). Systematic characterizations and measurements suggest that the uniformly dispersed Ti3C2Tx nanosheets enhance the thermal/mechanical stabilities and solvent resistance for both polymer-based membranes through steric effects and/or interfacial interactions. Besides, the horizontally-lied Ti3C2Tx nanosheets give significant promotion on the transfer of alcohol molecules by providing additional pathways along nanosheet surface using -OH as adsorption site. Particularly, they afford improvements of alcohol flux as high as 30% to PEI-based membrane and 162% to PDMS-based membrane. Meanwhile, the rejection abilities are dramatically improved with MWCOs below 200 Da due to the blockage of solute transfer by the nanosheets. These results indicate that the trade-off between alcohol flux and solute rejection is readily overcome. The transfer properties of weak- or non-polar solvents and the long-term operation stability of membranes are also explored. |
| first_indexed | 2025-11-14T10:46:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-70968 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:46:13Z |
| publishDate | 2016 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-709682023-08-02T06:39:12Z Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system Wu, X. Hao, L. Zhang, J. Zhang, X. Wang, J. Liu, Jian © 2016 Elsevier B.V. Solvent resistant nanofiltration (SRNF) technology is an energy efficient and environmentally friendly alternative to purify alcohol-based mixtures, but there exists a challenge in overcoming the trade-off between membrane flux and rejection. Herein, as the representative of the emerging family of MXenes, Ti3C2Tx nanosheets with abundant -OH groups are chosen as nanofillers to prepare SRNF composite membrane after being incorporated into two typical polymer matrixes: hydrophilic polyethyleneimine (PEI) and hydrophobic polydimethylsiloxane (PDMS). Systematic characterizations and measurements suggest that the uniformly dispersed Ti3C2Tx nanosheets enhance the thermal/mechanical stabilities and solvent resistance for both polymer-based membranes through steric effects and/or interfacial interactions. Besides, the horizontally-lied Ti3C2Tx nanosheets give significant promotion on the transfer of alcohol molecules by providing additional pathways along nanosheet surface using -OH as adsorption site. Particularly, they afford improvements of alcohol flux as high as 30% to PEI-based membrane and 162% to PDMS-based membrane. Meanwhile, the rejection abilities are dramatically improved with MWCOs below 200 Da due to the blockage of solute transfer by the nanosheets. These results indicate that the trade-off between alcohol flux and solute rejection is readily overcome. The transfer properties of weak- or non-polar solvents and the long-term operation stability of membranes are also explored. 2016 Journal Article http://hdl.handle.net/20.500.11937/70968 10.1016/j.memsci.2016.05.048 Elsevier BV restricted |
| spellingShingle | Wu, X. Hao, L. Zhang, J. Zhang, X. Wang, J. Liu, Jian Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title | Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title_full | Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title_fullStr | Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title_full_unstemmed | Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title_short | Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| title_sort | polymer-ti3c2tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system |
| url | http://hdl.handle.net/20.500.11937/70968 |