Nanocomposite Membranes Research Articles

A Review of the Current Progress of Metal-organic Framework and Covalent Organic Framework Nanocomposite Membrane in O2/N2 Gas Separation

The use of membrane technology has developed rapidly since the proposal of the Robeson upper bound. Nevertheless, the researchers proposed various methods and techniques to enhance the permeability and selectivity to achieve a breakthrough of the upper bound. Metal-organic framework (MOF) and covalent organic framework (COF) were the recently-interest- arising materials enhancing gas separation performance. In this study, recent advances in MOF and COF were comprehensively discussed in terms of the materials, properties and synthesis method. Later, the MOF and COF nanocomposite mixed matrix membrane development was discussed to evaluate the recent improvement of these membranes used in the O<sub>2</sub>/N<sub>2</sub> gas separation performance. This work intends to overview the recent progress and development of the metal-organic framework, covalent organic frameworks and the used nanocomposite membrane in O<sub>2</sub>/N<sub>2</sub> gas separation. This topic review was carried out from a thorough literature review of metal-organic frameworks, covalent organic frameworks and the used nanocomposite membrane in O<sub>2</sub>/N<sub>2</sub> gas separation. Additionally, the recent achievement of the O<sub>2</sub>/N<sub>2</sub> gas separation by nanocomposite membrane in term of permeability and selectivity are also discussed. Findings from this study suggested that MOF and COF-based nanocomposite membranes could be used in either the O<sub>2</sub>/N<sub>2</sub> and N<sub>2</sub>/O<sub>2</sub> gas separation process with the possibility of being involved in the gas production sector.

Mild synthesis of bi-carboxylated COFs nanosheets for the preparation of high-efficiency nano-wrinkled TFN membrane

Mild synthesis of bi-carboxylated COFs nanosheets for the preparation of high-efficiency nano-wrinkled TFN membrane

Thin-film nanocomposite membranes for water treatment: Evolution, applications, challenges, and advancement strategies

Thin-film nanocomposite membranes for water treatment: Evolution, applications, challenges, and advancement strategies

Tuning the optical, electrical, anti-microbial, and swelling activity of nanowires manganese dioxide-loaded chitosan matrix.

Tuning the optical, electrical, anti-microbial, and swelling activity of nanowires manganese dioxide-loaded chitosan matrix.

Recent advances on carbon-based nanocomposite membranes in water and wastewater applications

Recent advances on carbon-based nanocomposite membranes in water and wastewater applications

High-performance PVA/functionalized graphene oxide nanocomposite membranes for direct methanol fuel cells

High-performance PVA/functionalized graphene oxide nanocomposite membranes for direct methanol fuel cells

Engineering multi-channel water transport in surface-porous MXene nanosheets for high-performance thin-film nanocomposite membranes

Engineering multi-channel water transport in surface-porous MXene nanosheets for high-performance thin-film nanocomposite membranes

Fabrication of hydrophilic defective MOF-801 thin-film nanocomposite membranes via interfacial polymerization for efficient chromium removal from water.

Fabrication of hydrophilic defective MOF-801 thin-film nanocomposite membranes via interfacial polymerization for efficient chromium removal from water.

Efficient removal of hazardous dyes/heavy-metal ions by in-house fabricated poly (vinylidene fluoride) thin-film nanocomposite membranes with functionalized Zr-based metal-organic framework

Efficient removal of hazardous dyes/heavy-metal ions by in-house fabricated poly (vinylidene fluoride) thin-film nanocomposite membranes with functionalized Zr-based metal-organic framework

BiOBr@PZT Nanocomposite Membranes via Electrospinning-SILAR Technology: A Sustainable Green Material for Photocatalytic Degradation in Coloration-Related Wastewater Remediation

The textile industry encounters serious environmental challenges from wastewater with persistent organic pollutants, demanding sustainable solutions for remediation. Herein, we report a novel green synthesis of flexible BiOBr@PZT nanocomposite membranes via electrospinning and successive ionic layer adsorption and reaction (SILAR) for visible-light-driven photocatalytic degradation. The hierarchical structure integrates leaf-like BiOBr nanosheets with PAN/ZnO/TiO2 (PZT) nanofibers, forming a Z-scheme heterojunction. This enhances the separation of photogenerated carriers while preserving mechanical integrity. SILAR-enabled low temperature deposition ensures eco-friendly fabrication by avoiding toxic precursors and cutting energy use. Optimized BiOBr@PZT-5 shows exceptional photocatalytic performance, achieving 97.6% tetracycline hydrochloride (TCH) degradation under visible light in 120 min. It also has strong tensile strength (4.29 MPa) and cycling stability. Mechanistic studies show efficient generation of O2− and OH radicals through synergistic light absorption, charge transfer, and turbulence-enhanced mass diffusion. The material’s flexibility allows reusable turbulent flow applications, overcoming rigid catalyst limitations. Aligning with green chemistry and UN SDGs, this work advances multifunctional photocatalytic systems for scalable, energy-efficient wastewater treatment, offering a paradigm that integrates environmental remediation with industrial adaptability.

Porous Poly(vinylidene fluoride-co-hexafluoropropylene)/copper oxide nanocomposite membranes for piezoelectric strain sensing

The emerging field of porous piezoelectric strain sensors attracted a wide range of applications in healthcare monitoring, wearable electronics, and other dynamic applications due to their durability, high sensitivity, and real-time monitoring. This study presents the development of porous poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/copper oxide (CuO) nanocomposite membranes for piezoelectric strain sensing. The morphology and the dispersion of CuO nanoparticles and nanofibers in PVDF piezoelectric films with different nano-CuO contents are studied by X-ray diffraction, Fourier transform infrared spectrum, scanning electron microscopy and dielectric studies. The PVDF-HFP acts as a scaffold, allowing ions to flow within the porous percolated channels, resulting in a highly robust membrane with desired dielectric properties. The DMA studies enhanced the strain sensing performance of the 3.5 and 7 wt.% CuO nanofibers loaded with PVDF-HFP membranes compared with the 3.5 and 7 wt.% CuO nanoparticles and pristine membranes. The dielectric properties of the composites also showed high storage values for the CuO/PVDF-HFP samples compared to the pristine polymer. Moreover, the surface water contact angles of the membranes have slightly increased after loading the nanomaterial into the PVDF-HFP matrix, which strongly influenced the surface energies, indicating hydrophobicity. The current study, thus, demonstrates the piezoelectric strain sensing devices made from PVDF-HFP/CuO nanofibers for humid atmospheres.Graphical

Embedding Porous MXene into the Selective Layer of Pebax-Based Thin-Film Nanocomposite Membranes for Enhanced CO2 Removal Performance

Embedding Porous MXene into the Selective Layer of Pebax-Based Thin-Film Nanocomposite Membranes for Enhanced CO₂ Removal Performance

Preparation and characterization of PLA/TiO2 composites for photodegradation of methylene blue dyes

Fresh drinking water in the environment is scarce due to the contamination of water bodies by contaminants such as dyes, drugs, heavy metals and other aliquots from the industries. Among them, dyes have been a major concern in the manufacturing and production industries; therefore, developing appropriate techniques to remove dyes is still one of the industries' major challenges. In this project, the phase inversion method was used to prepare PLA and PLA/TiO2 nanocomposite membranes. The morphology, thermal properties, structure and crystallinity of the prepared membrane were studied, along with the photocatalysis degradation of the methylene blue. The composite membranes prepared were characterized by Fourier transform infrared spectroscopy (FTIR) to determine the functional groups that are present in the membrane. Scanning electron microscopy (SEM) was used to study the morphology of the porous membranes, and XRD and DSC to study the crystallinity of the membranes. Adsorption of methylene blue and photodegradation of the dyes were carried out at room temperature for 80 min at 10 min intervals. Composites containing 10 wt.% of TiO2 showed the highest photodegradation of the dye.

Enhanced oily wastewater treatment: silver nanoparticles-coated graphene oxide/MXene nanocomposite membranes

There's growing interest in using membrane technology to treat oily wastewater in industries. Nevertheless, membrane fouling is still a major challenge for removing oil particles from the wastewater. As reducing the membrane fouling requires material and surface science insights, in this work, a nanocomposite membrane was investigated for oily wastewater treatment using synthesized silver nanoparticles (AgNPs) coated graphene oxide (GO)/MXene nanocomposite. The synthesized nanocomposite underwent characterization through FT-IR, XRD, FE-SEM, EDX, and Raman spectroscopy; and in order to characterize the fabricated membranes, SEM, and AFM analysis were applied and the membrane properties such as Hardness, Young’s modulus, thickness, swelling ratio, and Water Contact Angle were studied. The efficiency of the produced membranes was assessed by computing the membrane's oil rejection and permeate flow; the results showed that the rejection was upper than 99.0% and the permeate flux was obtained as high as 160 L/m2 h. The study of the membrane surface charge by zeta potential analysis showed that the membrane performance could be optimized in terms of antibacterial and anti-fouling using synthesized nanocomposite membranes; that fully align with the findings of the efficiency of killing the bacteria (EKB) of different membranes using S. aureus as a Gram-positive and E. coli as a Gram-negative bacterium. The results of membrane fouling analysis showed that the modified membranes with FRR of 96.9% have higher sustainability compared to the PA6 neat membrane (FRR = 65.6%). Moreover, the classic Hermia fouling model revealed that the fouling mechanism of intermediate blocking best explains how fouling affects the membrane's performance.

Large-area, robust, transparent, and conductive ultrathin polymer nanocomposite membranes for flexible electronics.

Large-area, robust, transparent, and conductive ultrathin polymer nanocomposite membranes for flexible electronics.

Synthesis of Polyvinylidene Fluoride/Polyvinyl Chloride/Silver Oxide‐Based Nanocomposite Membranes and Evaluation for Its Application in Dialysis

ABSTRACTThis study explored the synthesis and characterization of polyvinylidene fluoride/polyvinyl chloride/silver oxide‐based nanocomposite membranes for improved mechanical and antibacterial properties for dialysis application. The morphological analysis using SEM revealed the well‐dispersed incorporation of Ag2O nanoparticles within the PVDF/PVC blend, confirming uniform nanostructures. Structural analysis through FTIR Spectroscopy showed characteristic peaks at 515 cm−1, indicating the presence of Ag2O in the PVDF/PVC matrix. XRD confirmed the face‐centered cubic structure of Ag2O nanoparticles with peaks at 32.56° and 46.17°, aligning with JCPDS No. 84–1108. Mechanical analysis demonstrated a significant increase in Young's modulus for PVDF/PVC/Ag2O membranes of 2052.6 MPa compared to PVDF(128.1 MPa) and PVDF/PVC(1131.5 MPa), highlighting enhanced stiffness. Antibacterial testing against Escherichia coli, Klebsiella pneumoniae, and Staphylococcus aureus showed that PVDF/PVC/Ag2O(10%) membranes exhibited enhanced inhibition zones of 16, 20, and 9 mm, respectively, compared to PVDF and PVDF/PVC membranes. Performance tests demonstrated enhanced water uptake (165.22%) and pure water permeation flux (93.69 Lm−2 h−1) for PVDF/PVC/Ag2O(5%) membranes, while maintaining high porosity (0.205). Dialysis performance showed superior urea clearance of 92% for PVDF/PVC/Ag2O(5%), compared to PVDF and PVDF/PVC membranes. This study underscored the potential of membranes in applications requiring superior mechanical strength and antibacterial efficacy for use in biomedical devices and filtration technologies.

Enhanced performance of thin film nanocomposite (TFN) membranes by incorporating hydrophilic MOF-808 into the organic phase: Towards eliminating non-steroidal anti-inflammatory drugs (NSAIDs) from aqueous solutions

Enhanced performance of thin film nanocomposite (TFN) membranes by incorporating hydrophilic MOF-808 into the organic phase: Towards eliminating non-steroidal anti-inflammatory drugs (NSAIDs) from aqueous solutions

A comparative investigation on the performances of different nanocomposite ultrafiltration membranes for wastewater reuse

A comparative investigation on the performances of different nanocomposite ultrafiltration membranes for wastewater reuse

Sodium alginate-based nanocomposite hydrogel membrane for removal of heavy metal ions and dyes in water.

Sodium alginate-based nanocomposite hydrogel membrane for removal of heavy metal ions and dyes in water.

Ion exchange membranes in environmental applications: Comprehensive review.

Ion exchange membranes in environmental applications: Comprehensive review.