The role of MOFs in Thin-Film Nanocomposite (TFN) membranes

Goethem, Cédric Van; Pfanmöller, Martin; Koschine, Tönjes; Dickmann, Marcel; Timpel-Lindner, Tanja; Egger, Werner; Bals, Sara; Vankelecom, Ivo F.J.

doi:10.1016/j.memsci.2018.06.040

Cited by 103 publications

(65 citation statements)

References 58 publications

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“…The PXRD pattern matched well with the reported graphitic C3N4 pattern [39,40]. Two apparent resonances (δ = 164 ppm and δ = 156 ppm) were detected in the 13 C cross polarization-magic angle spinning (CP-MAS) spectrum, which were owing to the sp 2 carbon atoms, as shown in Figure 1E [41]. All these results are in good agreement with the reported results [42], validating that a highly crystalline graphitic C3N4 was successfully synthesized.…”

Section: Resultssupporting

confidence: 87%

Tuning the Surface Structure of Polyamide Membranes Using Porous Carbon Nitride Nanoparticles for High-Performance Seawater Desalination

Zhou

Shinde

et al. 2020

Membranes

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Enhancing the water flux while maintaining the high salt rejection of existing reverse osmosis membranes remains a considerable challenge. Herein, we report the use of a porous carbon nitride (C3N4) nanoparticle to potentially improve both the water flux and salt rejection of the state-of-the-art polyamide (PA) thin film composite (TFC) membranes. The organic–organic covalent bonds endowed C3N4 with great compatibility with the PA layer, which positively influenced the customization of interfacial polymerization (IP). Benefitting from the positive effects of C3N4, a more hydrophilic, more crumpled thin film nanocomposite (TFN) membrane with a larger surface area, and an increased cross-linking degree of PA layer was achieved. Moreover, the uniform porous structure of the C3N4 embedded in the ”ridge” sections of the PA layer potentially provided additional water channels. All these factors combined provided unprecedented performance for seawater desalination among all the PA-TFC membranes reported thus far. The water permeance of the optimized TFN membrane is 2.1-folds higher than that of the pristine PA-TFC membrane, while the NaCl rejection increased to 99.5% from 98.0%. Our method provided a promising way to improve the performance of the state-of-art PA-TFC membranes in seawater desalination.

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Section: Resultssupporting

confidence: 87%

Tuning the Surface Structure of Polyamide Membranes Using Porous Carbon Nitride Nanoparticles for High-Performance Seawater Desalination

Zhou

Shinde

et al. 2020

Membranes

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“…[10] However, PIMs are soluble in various polar solvents, restricting their wide application in OSN. Efforts have also been made to improve the microporosity and interconnected void (i.e., cavities) by adding microporous organic materials into membranes, such as zeolites, metalorganic frameworks (MOFs), [14][15][16] covalent organic frameworks (COFs), [17,18] carbon materials, [19][20][21][22] and clay. [23,24] The compatibility between these fillers and the polymer matrix is not always satisfying, resulting in large voids or defects, decreasing the membrane selectivity.…”

mentioning

confidence: 99%

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

Huang

Puspasari

Nunes

et al. 2019

Adv Funct Materials

132

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Synthetic membranes with a high selectivity for demanding molecular separations and high permeance have a large potential for the reduction of energy consumption in separation processes. Herein, for the first time, the fabrication of an ultrathin layered macrocycle membrane for molecular separation in organic solvent nanofiltration using per-6-amino-β-cyclodextrin as a monomer for membrane manufacturing by interfacial polymerization is reported. Compared to a regular nonfunctionalized cyclodextrin, a higher reactivity is observed, enabling a very fast membrane formation under mild conditions. The formed membrane is composed of a layered structure of polymerized cyclodextrin, which shows high stability in different organic solvents. The membrane exhibits excellent separation performance for organic solvent nanofiltration, both with nonpolar and polar solvents. Most importantly, this new membrane type can discriminate between molecules with nearly identical molecular weights but different shapes. The unmatched high permeance and shape selectivity of the membranes can be attributed to the ultralow thickness, controlled microporosity, as well as the layered macrocycle structure, which makes the membranes promising for high-performance molecular separation in the chemical and biochemistry industry.

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“…Goethem et al [103] have developed a new evaporation controlled filler positioning (EFP) technique, of which main purpose is to increase the filler content in the upper layer of the film and its permeability can increase by at least 160% without affecting the salt interception rate [104]. Ameloot et al [105] used electrochemical method to gain 2~50 μm HKUST-1 modified thin films supported by copper sheet.…”

Section: Other Methodsmentioning

confidence: 99%

“…Secondary effects in the preparation process of metal organic framework films also hinder the formation of MOFs modified film, which are caused by many complex reasons and play an important role, although it may not the dominate effect [103]. Lind et al [114] showed that in the process of interfacial polymerization, some filler particles, once in contact with water, would immediately underwent hydration reaction and generated local heat, thus affecting the reaction kinetics of interfacial polymerization and the miscibility of solvents.…”

Section: Other Methodsmentioning

confidence: 99%

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

Qian

Zhu

2020

Environmental Engineering Research

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Porous metal-organic frameworks (MOFs) have received wide attention on the potential application to separation of pollutants from contaminated water to produce clear water. Recently, the report on MOFs modified membrane in pollution separation is very interesting. The main focus is that adding MOFs onto the surface of the membrane can significantly improve its separation performance and anti-fouling ability. This review took the opportunity to give readers a preliminary and detailing understanding of the basic knowledge of the MOFs modified membrane used in remediation of water pollution.

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The role of MOFs in Thin-Film Nanocomposite (TFN) membranes

Cited by 103 publications

References 58 publications

Tuning the Surface Structure of Polyamide Membranes Using Porous Carbon Nitride Nanoparticles for High-Performance Seawater Desalination

Tuning the Surface Structure of Polyamide Membranes Using Porous Carbon Nitride Nanoparticles for High-Performance Seawater Desalination

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

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

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