scholarly journals Ultrathin 2D‐Layered Cyclodextrin Membranes for High‐ Performance Organic Solvent Nanofiltration

2019 ◽  
Vol 30 (4) ◽  
pp. 1906797 ◽  
Author(s):  
Tiefan Huang ◽  
Tiara Puspasari ◽  
Suzana P. Nunes ◽  
Klaus‐Viktor Peinemann
Keyword(s):  
Organic Solvent ◽  
High Performance ◽  
Organic Solvent Nanofiltration

Polyarylate membrane constructed from porous organic cage for high-performance organic solvent nanofiltration

2020 ◽  
Vol 595 ◽  
pp. 117505 ◽  
Author(s):  
Zhe Zhai ◽  
Chi Jiang ◽  
Na Zhao ◽  
Wenjing Dong ◽  
Peng Li ◽  
...  
Keyword(s):  
Organic Solvent ◽  
High Performance ◽  
Organic Solvent Nanofiltration

scholarly journals Realizing small-flake graphene oxide membranes for ultrafast size-dependent organic solvent nanofiltration

2020 ◽  
Vol 6 (17) ◽  
pp. eaaz9184 ◽  
Author(s):  
Lina Nie ◽  
Kunli Goh ◽  
Yu Wang ◽  
Jaewoo Lee ◽  
Yinjuan Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Organic Solvent ◽  
High Performance ◽  
Organic Dyes ◽  
Molecular Transport ◽  
Operating Conditions ◽  
Transport Pathways ◽  
Size Dependent ◽  
Organic Solvent Nanofiltration ◽  
Small Flake

Membranes for organic solvent nanofiltration (OSN) or solvent-resistant nanofiltration (SRNF) offer unprecedented opportunities for highly efficient and cost-competitive solvent recovery in the pharmaceutical industry. Here, we describe small-flake graphene oxide (SFGO) membranes for high-performance OSN applications. Our strategy exploits lateral dimension control to engineer shorter and less tortuous transport pathways for solvent molecules. By using La3+ as a cross-linker and spacer for intercalation, the SFGO membrane selective layer was stabilized, and size-dependent ultrafast selective molecular transport was achieved. The methanol permeance was up to 2.9-fold higher than its large-flake GO (LFGO) counterpart, with high selectivity toward three organic dyes. More importantly, the SFGO-La3+ membrane demonstrated robust stability for at least 24 hours under hydrodynamic stresses that are representative of realistic OSN operating conditions. These desirable attributes stem from the La3+ cross-linking, which forms uniquely strong coordination bonds with oxygen-containing functional groups of SFGO. Other cations were found to be ineffective.

scholarly journals Molecular engineering of high-performance nanofiltration membranes from intrinsically microporous poly(ether-ether-ketone)

2020 ◽  
Vol 8 (46) ◽  
pp. 24445-24454
Author(s):  
Mahmoud A. Abdulhamid ◽  
Sang-Hee Park ◽  
Hakkim Vovusha ◽  
Faheem Hassan Akhtar ◽  
Kim Choon Ng ◽  
...  
Keyword(s):  
Organic Solvent ◽  
High Performance ◽  
Molecular Engineering ◽  
Nanofiltration Membranes ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Troger's Base ◽  
Ether Ketone ◽  
Organic Solvent Nanofiltration ◽  
Intrinsic Microporosity

Poly(ether-ether-ketone) obtains intrinsic microporosity with spirobisindane, Tröger's base, and triptycene contorted structures for organic solvent nanofiltration.

scholarly journals 2D-dual-spacing channel membranes for high performance organic solvent nanofiltration

2019 ◽  
Vol 7 (19) ◽  
pp. 11673-11682 ◽  
Author(s):  
Shaofei Wang ◽  
Dinesh Mahalingam ◽  
Burhannudin Sutisna ◽  
Suzana P. Nunes
Keyword(s):  
Graphene Oxide ◽  
Organic Solvent ◽  
High Performance ◽  
Organic Solvent Nanofiltration ◽  
Oxide Membranes ◽  
High Rejection ◽  
Graphene Oxide Membranes

Dual-spacing-channel graphene oxide membranes with multiple hydrophilic domains give high permeance and high rejection in organic solvent nanofiltration.

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