Bio-inspired deposition of polydopamine on PVDF followed by interfacial cross-linking with trimesoyl chloride as means of preparing composite membranes for isopropanol dehydration

Graphene oxide (GO) nanosheets were utilized as a selective layer on a highly porous polyvinyl alcohol (PVA) nanofiber support via a pressure-assisted self-assembly technique to synthesize composite nanofiltration membranes. The GO layer was rendered stable by cross-linking the nanosheets (GO-to-GO) and by linking them onto the support surface (GO-to-PVA) using glutaraldehyde (GA). The amounts of GO and GA deposited on the PVA substrate were varied to determine the optimum nanofiltration membrane both in terms of water flux and salt rejection performances. The successful GA cross-linking of GO interlayers and GO-PVA via acetalization was confirmed by FTIR and XPS analyses, which corroborated with other characterization results from contact angle and zeta potential measurements. Morphologies of the most effective membrane (CGOPVA-50) featured a defect-free GA cross-linked GO layer with a thickness of ~67 nm. The best solute rejections of the CGOPVA-50 membrane were 91.01% for Na2SO4 (20 mM), 98.12% for Eosin Y (10 mg/L), 76.92% for Methylene blue (10 mg/L), and 49.62% for NaCl (20 mM). These findings may provide one of the promising approaches in synthesizing mechanically stable GO-based thin-film composite membranes that are effective for solute separation via nanofiltration.

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Cross-Linking With Diamine Monomers to Prepare Graphene Oxide Composite Membranes With Varying D-Spacing for Enhanced Desalination Properties

Frontiers in Chemistry ◽

10.3389/fchem.2021.779304 ◽

2021 ◽

Vol 9 ◽

Author(s):

Hong Ju ◽

Jinzhuo Duan ◽

Haitong Lu ◽

Weihui Xu

Keyword(s):

Graphene Oxide ◽

Photoelectron Spectroscopy ◽

Water Flux ◽

Covalent Bond ◽

Composite Membranes ◽

Rejection Rate ◽

High Water ◽

Cross Linking ◽

Separation Performance ◽

X Ray

As a new type of membrane material, graphene oxide (GO) can easily form sub-nanometer interlayer channels, which can effectively screen salt ions. The composite membrane and structure with a high water flux and good ion rejection rate were compared by the cross-linking of GO with three different diamine monomers: ethylenediamine (EDA), urea (UR), and p-phenylenediamine (PPD). X-ray photoelectron spectroscopy (XPS) results showed that unmodified GO mainly comprises π-π interactions and hydrogen bonds, but after crosslinking with diamine, both GO and mixed cellulose (MCE) membranes are chemically bonded to the diamine. The GO-UR/MCE membrane achieved a water flux similar to the original GO membrane, while the water flux of GO-PPD/MCE and GO-EDA/MCE dropped. X-ray diffraction results demonstrated that the covalent bond between GO and diamine can effectively inhibit the extension of d-spacing during the transition between dry and wet states. The separation performance of the GO-UR/MCE membrane was the best. GO-PPD/MCE had the largest contact angle and the worst hydrophilicity, but its water flux was still greater than GO-EDA/MCE. This result indicated that the introduction of different functional groups during the diamine monomer cross-linking of GO caused some changes in the performance structure of the membrane.

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Polyamide interfacial composite membranes prepared from m-phenylene diamine, trimesoyl chloride and a new disulfonated diamine

Journal of Membrane Science ◽

10.1016/j.memsci.2012.02.038 ◽

2012 ◽

Vol 403-404 ◽

pp. 152-161 ◽

Cited By ~ 220

Author(s):

Wei Xie ◽

Geoffrey M. Geise ◽

Benny D. Freeman ◽

Hae-Seung Lee ◽

Gwangsu Byun ◽

...

Keyword(s):

Composite Membranes ◽

Trimesoyl Chloride ◽

Phenylene Diamine

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Cross‐Linking between Sodalite Nanoparticles and Graphene Oxide in Composite Membranes to Trigger High Gas Permeance, Selectivity, and Stability in Hydrogen Separation

Angewandte Chemie ◽

10.1002/ange.201915797 ◽

2020 ◽

Vol 132 (15) ◽

pp. 6343-6347

Author(s):

Hailing Guo ◽

Guodong Kong ◽

Ge Yang ◽

Jia Pang ◽

Zixi Kang ◽

...

Keyword(s):

Graphene Oxide ◽

Composite Membranes ◽

Hydrogen Separation ◽

Cross Linking

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Effect of Cross-Linking Agent Chemistry and Coating Conditions on Physical, Chemical, and Separation Properties of PVA-Psf Composite Membranes

Separation Science and Technology ◽

10.1080/01496395.2013.813040 ◽

2013 ◽

Vol 49 (1) ◽

pp. 22-29 ◽

Cited By ~ 10

Author(s):

Derrick S. Dlamini ◽

Jinwen Wang ◽

Ajay K. Mishra ◽

Bhekie B. Mamba ◽

Eric M. V. Hoek

Keyword(s):

Composite Membranes ◽

Cross Linking ◽

Physical Chemical

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Preparation of a novel anti-fouling β-cyclodextrin–PVDF membrane

RSC Advances ◽

10.1039/c5ra04894j ◽

2015 ◽

Vol 5 (63) ◽

pp. 51364-51370 ◽

Cited By ~ 30

Author(s):

Zongxue Yu ◽

Yang Pan ◽

Yi He ◽

Guangyong Zeng ◽

Heng Shi ◽

...

Keyword(s):

Interfacial Reaction ◽

Dip Coating ◽

Cross Linking ◽

Pvdf Membrane ◽

Coating Method ◽

Dip Coating Method ◽

Trimesoyl Chloride

A novel β-cyclodextrin (β-CD)–PVDF membrane was preparedviaan interfacial reaction, using Trimesoyl Chloride (TMC) and β-CD as cross-linking and modification agents, respectively. The membranes were modified by a simple dip-coating method.

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Enhanced flux performance of polyamide composite membranes prepared via interfacial polymerization assisted with ethyl formate

Water Science & Technology ◽

10.2166/wst.2017.349 ◽

2017 ◽

Vol 76 (7) ◽

pp. 1884-1894 ◽

Cited By ~ 2

Author(s):

Zhaofeng Liu ◽

Guiru Zhu ◽

Yulin Wei ◽

Dapeng Zhang ◽

Lei Jiang ◽

...

Keyword(s):

Reaction Zone ◽

Organic Phase ◽

Interfacial Polymerization ◽

Water Flux ◽

Composite Membranes ◽

Ethyl Formate ◽

Water Contact ◽

Tfc Membrane ◽

High Level ◽

Trimesoyl Chloride

A novel thin film composite (TFC) polyamide reverse osmosis membrane was prepared via the interfacial polymerization of m-phenylene diamine (MPD) in aqueous phase and 1,3,5-trimesoyl chloride (TMC) in organic phase on a polysulfone ultrafiltration support by assisting with ethyl formate as a co-solvent added in the organic phase. The ethyl formate added in the organic phase is intended to form a narrow miscibility zone, which leads to the thicker reaction zone. The multi-layered loose polyamide structure with larger pore size was formed due to the thicker reaction zone and lower content of MPD. The enhanced hydrophilicity of the membrane was proved by the decreased water contact angle. Water flux was measured at 1.6 MPa with 2,000 ppm NaCl aqueous solution. Compared to the TFC membrane prepared without ethyl formate, the water flux across the TFC membrane with ethyl formate in the organic phase increased with the increased ethyl formate content (from 23 to 45 L/(m2 h)) and the salt rejection remained at a high level (>90%). The ethyl formate can be used as a co-solvent to effectively enhance the performance of the TFC membrane.

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Supported MXene/GO Composite Membranes with Suppressed Swelling for Metal Ion Sieving

Membranes ◽

10.3390/membranes11080621 ◽

2021 ◽

Vol 11 (8) ◽

pp. 621

Author(s):

Zongjie Yin ◽

Zong Lu ◽

Yanyan Xu ◽

Yonghong Zhang ◽

Liliang He ◽

...

Keyword(s):

Composite Membrane ◽

Water Purification ◽

Metal Ion ◽

High Performance ◽

Composite Membranes ◽

Transition Metal Carbide ◽

Cross Linking ◽

Metal Carbide ◽

Ion Exclusion ◽

The Cross

Novel two-dimensional (2D) membranes have been utilized in water purification or seawater desalination due to their highly designable structure. However, they usually suffer from swelling problems when immersed in solution, which limits their further applications. In this study, 2D cross-linked MXene/GO composite membranes supported on porous polyamide substrates are proposed to improve the antiswelling property and enhance the ion-sieving performance. Transition-metal carbide (MXene) nanosheets were intercalated into GO nanosheets, where the carboxyl groups of GO combined the neighboring hydroxyl terminal groups of MXene with the formation of -COO- bonds between GO and MXene nanosheets via the cross-linking reaction (−OH + −COOH = −COO− + H2O) after heat treatment. The permeation rates of the metal ions (Li+, Na+, K+, Al3+) through the cross-linked MXene/GO composite membrane were 7–40 times lower than those through the pristine MXene/GO membrane. In addition, the cross-linked MXene/GO composite membrane showed excellent Na+ rejection performance (99.3%), which was significantly higher than that through pristine MXene/GO composite membranes (80.8%), showing improved ion exclusion performance. Such a strategy represents a new avenue to develop 2D material-derived high-performance membranes for water purification.

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Cross-Linked PIM-1 Membranes with Improved Stability to Aromatics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.869.431 ◽

2020 ◽

Vol 869 ◽

pp. 431-436

Author(s):

Alexey A. Yushkin ◽

Alexey V. Balynin ◽

Danila S. Bakhtin ◽

Richard Kirk ◽

Peter M. Budd ◽

...

Keyword(s):

Aromatic Hydrocarbons ◽

Solubility Parameter ◽

Composite Membranes ◽

Cross Linking ◽

Selective Layer ◽

Aromatic Solvents ◽

Improved Stability ◽

The Stability ◽

Distance Parameter ◽

Hansen Solubility

Composite membranes were prepared for nanofiltration of aromatic solvents. Cross-linking with AlCl3 was used to improve the stability of the PIM-1 selective layer in aromatic solvents like toluene, benzene and xylene. Nanofiltration performances of obtained membranes were tested with 4 different aromatic hydrocarbons and with 3 solvents from other classes of solvents. Obtained permeability for aromatic hydrocarbons was above 8,5 kg/m2·h·bar and retention of Remazol brilliant blue R dye with molecular mass 626 was up to 96 %. It was shown that permeability results correlated with Hansen solubility parameter and distance parameter between polymer and solvent. PIM-1 has higher permeability for non-polar hydrocarbons due to higher affinity between polymer and solvent.

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