Gas separation and water desalination performance of defect-free interfacially polymerized para-linked polyamide thin-film composite membranes

Ali, Zain; Wang, Yingge; Ogieglo, Wojciech; Pacheco, Federico; Vovusha, Hakkim; Han, Yu; Pinnau, Ingo

doi:10.1016/j.memsci.2020.118572

Cited by 45 publications

(30 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The direct interfacial reaction of COF films or membranes on inorganic porous supports, like the preparation of commercially available polyamide thin film composite (TFC) membranes, is apt to form gas-leaking defects, jeopardizing the gas separation performance. [17] This is due to the difficulties in precisely mana ging the mass transfer of reacting components on the support surface. [18] A low concentration of monomers in local regions may lead to a loose membrane or even a discontinuous membrane.…”

Section: Resultsmentioning

confidence: 99%

Ultrathin Covalent Organic Framework Membranes via a Multi‐Interfacial Engineering Strategy for Gas Separation

et al. 2021

View full text Add to dashboard Cite

Covalent organic frameworks (COFs) are one family of crystalline porous polymers constructed from organic building blocks through covalent linkages. [11] They exist as 2D or 3D structures with high order and periodicity. 2D COFs, in particular, possess remarkable potential as membrane materials due to the intrinsic in-plane porosity, short transport channels, tunable functionality, as well as excellent hydrothermal stability. [12] The presence of ordered in-plane pores in 2D COFs is highly distinct from other 2D materials such as graphene oxide (GO), which rely instead on interlamellar transport or deliberate introduction of in-plane defects to generate transport pathways. [13] The inplane pores of 2D COFs provide short gas transport pathways and thus avoid the long zigzag transport pathways in nonporous 2D material membranes, affording high gas permeability in COF membranes. We have investigated COF membranes for gas separations among other research groups, revealing their highly competitive performance. [14] However, the relatively large pore size (>6 Å) of most COFs remains a major stumbling block when fabricating COF membranes for separating small gas molecules (<4 Å). [14a] One approach to overcome this limitation is to narrow the pore size by introducing functional groups onto the COF walls through an in situ synthesis or post-modification. [15] Another way is to construct multilayer MOF/COF or COF/COF membranes by forming narrowed apertures or synergistic effects at the interface between different layers. Those membranes have shown significantly enhanced separation performance compared with their corresponding single-phase membranes. [14b,16] From our developmental experience, we have made several observations: 1) the relatively large membrane thickness (greater than 1 µm) limits the separation performance, especially the gas permeance, 2) the stacking mode needs to be better optimized to maximize the separation capability, and 3) the complex, long preparation processes limit the wide application and scaling-up preparation of the membranes. Should ultrathin nature, appropriate aperture size, facile membrane preparation process, and excellent stability be realized simultaneously, the resultant membranes will be expected to show benchmark molecular sieving performance.Herein, we propose a multi-interfacial engineering strategy to prepare high-performance COF-based membranes for small-molecule gas separations. Specifically, we combined two COFs (TpPa-SO 3 H and TpTG Cl ) with different pore sizes Covalent organic frameworks (COFs) are promising membrane materials due to their high porosity, ordered arrangements, and high stability. However, the relatively large pore size and complicated membrane preparation processes of COFs limit their applications in sieving small gas molecules, even at a lab scale. Herein, a multi-interfacial engineering strategy is proposed, that is, direct layer-by-layer interfacial reaction of two COFs (TpPa-SO 3 H and TpTG Cl ) with different pore sizes to form narrowed apertures at ...

show abstract

Section: Resultsmentioning

confidence: 99%

Ultrathin Covalent Organic Framework Membranes via a Multi‐Interfacial Engineering Strategy for Gas Separation

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Table 8 and Figure compare the performance of state‐of‐the‐art RO membranes with newly developed TFC membranes containing PIM building blocks. [ 189,195,197,200–210 ] Similar to organic solvent nanofiltration performance, typical PIM‐based TFC membranes suffer from low salt rejection while allowing high permeance for water desalination applications. [ 203–205,208,210 ] For example, Lu et al prepared membranes using 5,5′,6,6′‐tetrahydroxy‐3,3,3′,3′‐tetramethylspirobisindane (TTSBI) and isophthaloyl chloride (IPC).…”

Section: Pim‐derived Membranes For Liquid Separations By Nanofiltration/romentioning

confidence: 99%

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

et al. 2021

Self Cite

View full text Add to dashboard Cite

Solution‐processable amorphous glassy polymers of intrinsic microporosity (PIMs) are promising microporous organic materials for membrane‐based gas and liquid separations due to their high surface area and internal free volume, thermal and chemical stability, and excellent separation performance. This review provides an overview of the most recent developments in the design and transport properties of novel ladder PIM materials, polyimides of intrinsic microporosity (PIM–PIs), functionalized PIMs and PIM–PIs, PIM‐derived thermally rearranged (TR), and carbon molecular sieve (CMS) membrane materials as well as PIM‐based thin film composite membranes for a wide range of energy‐intensive gas and liquid separations. In less than two decades, PIMs have significantly lifted the performance upper bounds in H2/N2, H2/CH4, O2/N2, CO2/N2, and CO2/CH4 separations. However, PIMs are still limited by their insufficient gas‐pair selectivity to be considered as promising materials for challenging industrial separations such as olefin/paraffin separations. An optimum pore size distribution is required to further improve the selectivity of a PIM for a given application. Specific attention is given to the potential use of PIM‐based CMS membranes for energy‐intensive CO2/CH4, N2/CH4, C2H4/C2H6, and C3H6/C3H8 separations, and thin film composite membranes containing PIM motifs for liquid separations.

show abstract

“…Composite membranes with asymmetric structure have received much attention due to their important applications in different fields. They are used in separation processes with applications ranging from particle removal to desalination (Eljaddi et al, 2021), and in gas separation or pervaporation and RO (Ali et al, 2021). The rupture of composite membranes affects negatively the performance of desalination by reducing its selectivity and increasing its permeability (Park et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…They are used in separation processes with applications ranging from particle removal to desalination (Eljaddi et al. , 2021), and in gas separation or pervaporation and RO (Ali et al. , 2021).…”

Section: Introductionmentioning

confidence: 99%

Breaking process of composite membranes used in desalination phenomenon

Ezaier

Hader

Achik

et al. 2022

MMMS

View full text Add to dashboard Cite

PurposeThe purpose of this paper is to present a study of the breaking process of composite membranes used in the water desalination. Temperature, fluid pressure and accumulate retained fluid are remarkable parameters, which are likely to damage these membranes.Design/methodology/approachIn this paper, the authors adopt the dynamics of a fiber bundle model to investigate the breaking process of composite membranes with fibres distributed parallel to the direction of fluid flow. The model is based on the fiber bundle model where the fibres are randomly oriented.FindingsThe obtained results show that the increase in the parameters leads to an avalanche rupture of the membrane fibre and also increases its porosity. Lifetime membranes exhibit an exponential and power law vs. the parameters.Originality/valueThe accumulation of the retained fluid has a great effect on membranes than the temperature and fluid pressure.

show abstract

Gas separation and water desalination performance of defect-free interfacially polymerized para-linked polyamide thin-film composite membranes

Cited by 45 publications

References 59 publications

Ultrathin Covalent Organic Framework Membranes via a Multi‐Interfacial Engineering Strategy for Gas Separation

Ultrathin Covalent Organic Framework Membranes via a Multi‐Interfacial Engineering Strategy for Gas Separation

Recent Progress on Polymers of Intrinsic Microporosity and Thermally Modified Analogue Materials for Membrane‐Based Fluid Separations

Breaking process of composite membranes used in desalination phenomenon

Contact Info

Product

Resources

About