Antiviral Nanomaterials for Designing Mixed Matrix Membranes

Membranes are helpful tools to prevent airborne and waterborne pathogenic microorganisms, including viruses and bacteria. A membrane filter can physically separate pathogens from air or water. Moreover, incorporating antiviral and antibacterial nanoparticles into the matrix of membrane filters can render composite structures capable of killing pathogenic viruses and bacteria. Such membranes incorporated with antiviral and antibacterial nanoparticles have a great potential for being applied in various application scenarios. Therefore, in this perspective article, we attempt to explore the fundamental mechanisms and recent progress of designing antiviral membrane filters, challenges to be addressed, and outlook.

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Emerging Materials for Mixed-Matrix Membranes

Membranes ◽

10.3390/membranes11100746 ◽

2021 ◽

Vol 11 (10) ◽

pp. 746

Author(s):

Chong Yang Chuah ◽

Kunli Goh ◽

Tae-Hyun Bae

Keyword(s):

Wastewater Treatment ◽

Potential Application ◽

Recent Progress ◽

Sea Water ◽

Water Desalination ◽

Mixed Matrix Membranes ◽

Special Issue ◽

Mixed Matrix ◽

Pathogenic Viruses ◽

Matrix Membranes

This Special Issue, entitled “Emerging Materials for Mixed-Matrix Membranes” was introduced to cover the recent progress in the development of materials for mixed-matrix membranes (MMMs) with potential application in fields such as sea water desalination, gas separation, pharmaceutical separation, wastewater treatment and the removal of pathogenic (viruses and bacteria) microorganisms as well as solvents and resource recovery [...]

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Enhanced O2/N2 Separation of Mixed-Matrix Membrane Filled with Pluronic-Compatibilized Cobalt Phthalocyanine Particles

Membranes ◽

10.3390/membranes10040075 ◽

2020 ◽

Vol 10 (4) ◽

pp. 75 ◽

Cited By ~ 4

Author(s):

S. A. S. C. Samarasinghe ◽

Chong Yang Chuah ◽

H. Enis Karahan ◽

G. S. M. D. P. Sethunga ◽

Tae-Hyun Bae

Keyword(s):

High Performance ◽

Polymeric Materials ◽

Polymeric Membranes ◽

Air Separation ◽

Industrial Processes ◽

Mixed Matrix Membranes ◽

Mixed Matrix Membrane ◽

Mixed Matrix ◽

Interfacial Defects ◽

The Matrix

Membrane-based air separation (O2/N2) is of great importance owing to its energy efficiency as compared to conventional processes. Currently, dense polymeric membranes serve as the main pillar of industrial processes used for the generation of O2- and N2-enriched gas. However, conventional polymeric membranes often fail to meet the selectivity needs owing to the similarity in the effective diameters of O2 and N2 gases. Meanwhile, mixed-matrix membranes (MMMs) are convenient to produce high-performance membranes while keeping the advantages of polymeric materials. Here, we propose a novel MMM for O2/N2 separation, which is composed of Matrimid® 5218 (Matrimid) as the matrix, cobalt(II) phthalocyanine microparticles (CoPCMPs) as the filler, and Pluronic® F-127 (Pluronic) as the compatibilizer. By the incorporation of CoPCMPs to Matrimid, without Pluronic, interfacial defects were formed. Pluronic-treated CoPCMPs, on the other hand, enhanced O2 permeability and O2/N2 selectivity by 64% and 34%, respectively. We explain the enhancement achieved with the increase of both O2 diffusivity and O2/N2 solubility selectivity.

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Magnetically Aligned and Enriched Pathways of Zeolitic Imidazolate Framework 8 in Matrimid Mixed Matrix Membranes for Enhanced CO2 Permeability

Membranes ◽

10.3390/membranes10070155 ◽

2020 ◽

Vol 10 (7) ◽

pp. 155 ◽

Cited By ~ 1

Author(s):

Machiel van Essen ◽

Esther Montrée ◽

Menno Houben ◽

Zandrie Borneman ◽

Kitty Nijmeijer

Keyword(s):

Design Parameters ◽

Mixed Matrix Membranes ◽

Co2 Uptake ◽

Mixed Matrix ◽

Zeolitic Imidazolate Framework ◽

Weight Content ◽

The Matrix ◽

Metal Organic ◽

Magnetically Aligned ◽

Matrix Membranes

Metal-organic frameworks (MOFs) as additives in mixed matrix membranes (MMMs) for gas separation have gained significant attention over the past decades. Many design parameters have been investigated for MOF based MMMs, but the spatial distribution of the MOF throughout MMMs lacks investigation. Therefore, magnetically aligned and enriched pathways of zeolitic imidazolate framework 8 (ZIF−8) in Matrimid MMMs were synthesized and investigated by means of their N2 and CO2 permeability. Magnetic ZIF−8 (m–ZIF−8) was synthesized by incorporating Fe3O4 in the ZIF−8 structure. The presence of Fe3O4 in m–ZIF−8 showed a decrease in surface area and N2 and CO2 uptake, with respect to pure ZIF−8. Alignment of m–ZIF−8 in Matrimid showed the presence of enriched pathways of m–ZIF−8 through the MMMs. At 10 wt.% m–ZIF−8 incorporation, no effect of alignment was observed for the N2 and CO2 permeability, which was ascribed anon-ideal tortuous alignment. However, alignment of 20 wt.% m–ZIF−8 in Matrimid showed to increase the CO2 diffusivity and permeability (19%) at 7 bar, while no loss in ideal selectivity was observed, with respect to homogeneously dispersed m–ZIF−8 membranes. Thus, the alignment of MOF particles throughout the matrix was shown to enhance the CO2 permeability at a certain weight content of MOF.

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Separation of DMMP/Water Vapor with PDMS/Silica Membranes for the Sample Inlet of Ion Mobility Spectrometers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1049-1050.142 ◽

2014 ◽

Vol 1049-1050 ◽

pp. 142-147

Author(s):

Mo Lin Qin ◽

Cheng Hai Guo ◽

Liu Yang ◽

Jian Jun Zhao

Keyword(s):

Water Vapor ◽

Ion Mobility ◽

Silicone Rubber ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Dimethyl Methylphosphonate ◽

Silica Membranes ◽

The Matrix ◽

Different Thickness ◽

Maximum Separation

In order to obtain an ideal sample inlet membrane for ion mobility spectrometers (IMS), fumed silica was modified using hexamethyldisilazane and was incorporated into the matrix of polydimethylsiloxane (PDMS) silicone rubber to fabricate PDMS/silica mixed matrix membranes with different thickness. Dimethyl methylphosphonate (DMMP) permeability of thin silicone rubber membranes (SRM) with the least thickness of approximate 5μm was studied. DMMP concentration interior to the SRM showed the linear correlation to that external to the SRM. Thickness and temperature of SRM were two important factors influencing the permeation proportion of DMMP. Most water vapor was prevented to transfer through the SRM. In addition, the SRM had a good selectivity of DMMP/water vapor and the maximum separation factor was 4.82 when the temperature of membranes reached 80 °C.

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Recent progress of fillers in mixed matrix membranes for CO 2 separation: A review

Separation and Purification Technology ◽

10.1016/j.seppur.2017.07.051 ◽

2017 ◽

Vol 188 ◽

pp. 431-450 ◽

Cited By ~ 140

Author(s):

Mari Vinoba ◽

Margandan Bhagiyalakshmi ◽

Yousef Alqaheem ◽

Abdulaziz A. Alomair ◽

Andrés Pérez ◽

...

Keyword(s):

Recent Progress ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Matrix Membranes

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A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Polymers ◽

10.3390/polym14010010 ◽

2021 ◽

Vol 14 (1) ◽

pp. 10

Author(s):

Gabriele Clarizia ◽

Paola Bernardo

Keyword(s):

Flue Gas ◽

Recent Progress ◽

Global Strategy ◽

Sustainable Growth ◽

Mixed Matrix Membranes ◽

Filler Materials ◽

Key Factors ◽

Mixed Matrix ◽

Separation Of Co2 ◽

Matrix Membranes

An inspiring challenge for membrane scientists is to exceed the current materials’ performance while keeping the intrinsic processability of the polymers. Nanocomposites, as mixed-matrix membranes, represent a practicable response to this strongly felt need, since they combine the superior properties of inorganic fillers with the easy handling of the polymers. In the global strategy of containing the greenhouse effect by pursuing a model of sustainable growth, separations involving CO2 are some of the most pressing topics due to their implications in flue gas emission and natural gas upgrading. For this purpose, Pebax copolymers are being actively studied by virtue of a macromolecular structure that comprises specific groups that are capable of interacting with CO2, facilitating its transport with respect to other gas species. Interestingly, these copolymers show a high versatility in the incorporation of nanofillers, as proved by the large number of papers describing nanocomposite membranes based on Pebax for the separation of CO2. Since the field is advancing fast, this review will focus on the most recent progress (from the last 5 years), in order to provide the most up-to-date overview in this area. The most recent approaches for developing Pebax-based mixed-matrix membranes will be discussed, evidencing the most promising filler materials and analyzing the key-factors and the main aspects that are relevant in terms of achieving the best effectiveness of these multifaceted membranes for the development of innovative devices.

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Gas Permeation Models in Mixed Matrix Membranes for Gas Separation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.917.317 ◽

2014 ◽

Vol 917 ◽

pp. 317-324 ◽

Cited By ~ 4

Author(s):

Sikander Rafiq ◽

Adulhalim Shah Maulud ◽

Zakaria Man ◽

Nawshad Muhammad

Keyword(s):

Maxwell Model ◽

Theoretical Models ◽

Gas Permeation ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Cross Sectional ◽

Feed Pressure ◽

Bruggeman Model ◽

The Matrix ◽

Matrix Membranes

Various theoretical models on CO2 permeation were discussed that included Maxwell model, Bruggeman model, Lewis-Nielson model and Pal model. These models were used for comparing the relative permeance of CO2 with the previously published experimental data on silica nanoparticles filled polysulfone/polyimide (PSF/PI) mixed matrix membranes (MMMs). The results showed that the deviation was in the increasing order: Lewis-Nielsen model< Maxwell model< Pal model< Bruggeman model. All these models assumed that the fillers are spherical in shape. A scanning electron microscope (SEM) cross-sectional image indicated that the silica particles were prolate ellipsoids that were dispersed in the matrix. To investigate the prolate effect, the Maxwell-Wagner-Sillar (MWS) model was employed. The evaluation from cross-sectional image of the membrane structure indicated that the shape factor along z-direction gave a minimum deviation of 17.52%-20.10% at 2-10 bar feed pressure respectively.

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Recent Progress in Mixed-Matrix Membranes

Advanced Membrane Technology and Applications ◽

10.1002/9780470276280.ch30 ◽

2008 ◽

pp. 787-819 ◽

Cited By ~ 5

Author(s):

Chunqing Liu ◽

Santi Kulprathipanja ◽

Alexis M. W. Hillock ◽

Shabbir Husain ◽

William J. Koros

Keyword(s):

Recent Progress ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Matrix Membranes

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Effect of Graphene Oxide Synthesis Method on Properties and Performance of Polysulfone-Graphene Oxide Mixed Matrix Membranes

Nanomaterials ◽

10.3390/nano9050769 ◽

2019 ◽

Vol 9 (5) ◽

pp. 769 ◽

Cited By ~ 10

Author(s):

Safae Sali ◽

Hamish R. Mackey ◽

Ahmed A. Abdala

Keyword(s):

Graphene Oxide ◽

Water Flux ◽

Synthesis Method ◽

Composite Membranes ◽

Mixed Matrix Membranes ◽

Great Promise ◽

Mixed Matrix ◽

Water Emulsion ◽

The Matrix ◽

And Performance

Graphene oxide (GO) has shown great promise as a nanofiller to enhance the performance of mixed matrix composite membranes (MMMs) for water treatment applications. However, GO can be prepared by various synthesis routes, leading to different concentrations of the attached oxygen functional groups. In this research, GO produced by the Hummers’, Tour, and Staudenmaier methods were characterized and embedded at various fractions into the matrix of polysulfone (PSf) and used to prepare microfiltration membranes via the phase inversion process. The effects of the GO preparation method and loading on the membrane characteristics, as well as performance for oil removal from an oil-water emulsion, are analyzed. Our results reveal that GO prepared by the Staudenmaier method has a higher concentration of the more polar carbonyl group, increasing the membrane hydrophilicity and porosity compared to GO prepared by the Hummers’ and Tour methods. On the other hand, the Hummers’ and Tour methods produce GO with larger sheet size, and are more effective in enhancing the mechanical properties of the PSf membrane. Finally, all MMMs exhibited improved water flux (up to 2.7 times) and oil rejection, than those for the control PSf sample, with the optimum GO loading ranged between 0.1–0.2 wt%.

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