Journal article
Ultrathin poly (vinyl alcohol)/MXene nanofilm composite membrane with facile intrusion-free construction for pervaporative separations
Journal of Membrane Science, Vol.614, 118490
15/11/2020
Metrics
3 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
Molecular separations using synthetic membranes have been widely recognized as energy-efficient processes relative to conventional separation technologies. Rational design of the membrane structures for attainment of exceptionally permselective materials is highly beneficial in this respect. Herein, an ultrathin organic-inorganic hybrid nanofilm is formed on a hydrophobic polytetrafluoroethylene porous substrate through a facile and scalable solution casting process, thereby realizing an intrusion-free composite structure. Nanosizing Ti3C2Tx MXene and sulfosuccinic acid are incorporated as nanofiller and crosslinker to manipulate the structural rigidity and free-volume property by polymer-nanofiller interaction and polymer chain crosslinking while simultaneously rendering outstanding membrane transport property, selectivity and stability. The synthesized nanofilm composite membrane with thickness down to ≈230 nm, comparable with the lateral dimension of small-sized MXene (≈142 nm), exhibits outstanding pervaporative separation of water from various aqueous-ion or -alcohol mixtures with high throughput that is around 5–70 times of other reported polymer-based membranes. Transport modelling of this hybrid nanofilm suggests that ultralow-resistance permeation behavior induced by MXene nanosheets dominates as the nanofilm thickness approaches the filler size.
Details
- Title
- Ultrathin poly (vinyl alcohol)/MXene nanofilm composite membrane with facile intrusion-free construction for pervaporative separations
- Creators
- Guang Yang - Commonwealth Scientific and Industrial Research OrganisationZongli Xie - Commonwealth Scientific and Industrial Research OrganisationAaron W Thornton - Commonwealth Scientific and Industrial Research OrganisationCara M Doherty - Commonwealth Scientific and Industrial Research OrganisationMingmei Ding - Hohai UniversityHang Xu - Hohai UniversityMarlene Cran - Victoria UniversityDerrick Ng - Commonwealth Scientific and Industrial Research OrganisationStephen Gray - Victoria University
- Publication Details
- Journal of Membrane Science, Vol.614, 118490
- Publisher
- Elsevier B.V
- Identifiers
- 991013035777102368
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article