Oxide Nanocomposite Membrane Research Articles

Sulphonated-graphene oxide nanocomposite membranes with PVA-ZnO nanostructures and mechanized agitation-enhanced pt coating for soft robotics bending actuator

Ionic Polymer-Metal Composite (IPMC) actuators have garnered significant scientific attention in robotics and artificial muscles for their ability to operate at low voltage, high strain capacity, and lightweight construction. The lack of uniform bending in IPMC actuators undermines their control precision and restricts their range of potential applications. This study utilized the unique properties of nanoscale materials and Polyvinyl alcohol (PVA) to develop a membrane for soft robotic bending actuation. Subsequently, a platinum coating was applied to the membrane to mitigate the limitations of IPMCs in soft robotics applications. Herein, mechanized agitation was employed during the solution-casting process to enhance platinum metal (Pt-metal) coating on zinc oxide (ZnO) nanostructures within a PVA- sulphonated graphene oxide nanocomposite, achieving enhanced soft robotics bending actuation capabilities. The resultant membrane composed of sulphonated-graphene oxide and polyvinyl-zinc oxide coated with pt (PsGZ-Pt) was examined by exploring advanced analytical techniques such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction spectroscopy (XRD). Furthermore, the ionic exchange capacity (IEC), proton conductivity (PC), water uptake and water loss characteristics were evaluated to be 2.1 meq. g−1, 1.95 × 10−3 Scm−1, 59.62% at 45 °C and water loss at 9 min immersion found 38%, respectively. Electromechanical studies of the PsGZ-Pt membrane (size 30 mm length, 10 mm width, 0.07 mm thickness) showed an actuation force of 0.3253 mN and a displacement of roughly 22.8 mm at ± 3 VDC. These findings highlighted the PsGZ-Pt membrane’s potential as a low-cost alternative to expensive commercial IPMC actuators based on polymers. These results presented a straightforward, low-cost approach for synthesizing PsGZ-Pt utilizing conventional technologies. The PsGZ-Pt membrane shows promise for generating low-cost, high-performance actuation materials with a wide range of industrial applications.

High performance lamellar structured graphene oxide nanocomposite membranes via Fe3O4-coordinated phytic acid control of interlayer spacing for organic solvent nanofiltration (OSN)

Graphene oxide (GO), a 2D nanomaterial known for its precise molecular sieving, holds potential for Organic Solvent Nanofiltration (OSN) and wastewater treatment. However, challenges such as thin interlayer spacing, extended diffusion pathways, and susceptibility to dehydration and negative charge-induced swelling limit its separation performance. To overcome these limitations, Herein, we have fabricated novel Fe3O4 coordinated PhA intercalated GO nanocomposite membranes. Impressively, these nanocomposite membranes exhibited remarkable separation efficiency for dyes, pesticides, and pharmaceutical ingredients, addressing the drawbacks associated with pristine GO membranes and enhancing their overall performance. The optimum G10(1)/P1.5-F100µL nanocomposite membrane displayed impressive solvent permeance of 40.43, 33.45, 20.70, 16.24, and 5.6 L/m2 h bar for acetone, methanol, water, ethanol, and IPA, respectively, while maintaining a rejection rate of ≥98.97 % for the MO dye (MW = 327.33 g/mol). Furthermore, the membrane exhibited outstanding efficiency in separating tetracycline (TC) in ethanol (≥97.97 %) and Pendimethalin (PM) in water (≥99.88 %). Additionally, it demonstrated high rejection capabilities for MB (≥98 %) and CR (≥98.78 %) in harsh DMF solvent. Importantly, the nanocomposite membrane displayed outstanding durability throughout continuous separation of Pendimethalin (PM) in a water solution over a period of 168 h. The PM separation remained nearly unchanged for the entire 168-h duration, demonstrating high mechanical strength and chemical stability. Additionally, the single nanocomposite membrane showcased high efficiency in feed change separation, successfully separating CR in ethanol and PM in water. These results, compared to the other GO-based nanocomposite membranes, demonstrate the exceptional stability and immense potential for real OSN applications.

A novel electroactive biopolymer-graphene oxide nanocomposite membrane for high-performance electrochemical sensing of ethylene

This study focuses on formulating an electroactive composite membrane using polyvinyl alcohol (PVA), chitosan (CHT), and graphene oxide (GO), specifically emphasizing its application in electrochemical ethylene detection. Through the surface functionalization of the PVA-CHT-GO membrane via GO activation, the nanocrystallite GO-based composite, when incorporated into a microelectrode chip, exhibited a transformative enhancement in electrochemical ethylene sensing. Comprehensive characterizations of both the synthesized GO and the PVA-CHT-GO composite membranes were conducted by employing X-ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), Raman spectroscopy, Energy Dispersive X-ray spectroscopy (EDS), Field emission scanning electron microscopy (FE-SEM), and Thermal gravimetric analysis (TGA). The XRD pattern provides insights into the stacking height, interplanar spacing, and the number of layers along the (002) direction. The synthesized GO's average nano-crystallite size was determined to be 10.38 nm. The Raman spectrum revealed prominent D and G bands at 1353 and 1591 cm-1, respectively. FE-SEM images depicted the overlapping of GO nanolayers, each layer having a thickness in the range of 20–30 nm. Following surface activation, thin layers developed on the membrane surface, with numerous folds accumulating, exhibiting thickness in the range of 20–50 nm. The intricate characterization underscored the structural and morphological features of the membrane, enhancing our understanding of its surface properties. The effectiveness of ethylene detection using the GO-activated PVA-CHT-GO membrane was evaluated via cyclic voltammetry (CV) measurements. These measurements confirmed the membrane's efficiency, demonstrating ultra-sensitive ethylene detection, even upon initial exposure to ethylene.

Ion-retention properties of graphene oxide/zinc oxide nanocomposite membranes at various pH and temperature conditions

Laminar graphene oxide (GO) is a promising candidate material for next-generation highly water-permeable membranes. Despite extensive research, there is little information known concerning GO's ion-sieving properties at high acidic/basic pH and temperatures. In this study, the ion-blockage properties of the pristine GO and GO/zinc oxide (ZnO) nanocomposite membranes were tested using a non-pressure-driven filtration setup over a wide range of pH and temperatures. The ZnO nanoparticles within the composite membranes were synthesized via the room-temperature oxidation of zinc acetate and zinc acrylate precursors and were uniformly distributed across the composite membrane. It is observed that partially replacing the zinc acetate precursor with zinc acrylate improves the blockage performance of the composite membranes under extreme basic conditions by 42%. Moreover, photocatalytically-reduced composite membranes blocked copper sulfate ions 28% more than as-prepared composite membranes. Further, it was discovered that the composition of the membrane plays a vital role in its ion blockage performance at higher temperatures.

Surface decoration of polyethylene terephthalate (PET) waste bottle-derived ultrafiltration membrane for enhanced lead ion removal and antifouling properties

PET waste bottle can be potentially used to create eco-friendly ultrafiltration (UF) membranes for water and wastewater treatment. The surface modification and functionalization of PET UF membrane offer opportunities to further heighten the performance of the membrane. In this study, phase inversion technique was used to fabricate PET UF membranes and PET/graphene oxide (GO) nanocomposite membranes through a facile GO suspension coating approach. The GO nanosheets were deposited on the PET UF membrane as a wavy and wrinkly layer. Using lead (Pb) ions and bovine serum albumin (BSA) feed solutions, the filtration performances of the neat PET and GO-PET membranes were evaluated. It was observed that, the Pb ions and BSA removal efficiencies were greatly enhanced by the surface decorated GO. Compared to neat PET, the 0.5GO-PET membrane exhibited improved flux performance by 188% and 61% for the removal of Pb ions and BSA, respectively. A high Pb ion removal of 100% and a BSA rejection of 97% were achieved by 0.5GO-PET membrane. The lower fouling tendency of 0.5GO-PET membrane during long-term filtration was attributed to the increased surface hydrophilicity and smoothness upon the deposition of GO layer. This study demonstrates a sustainable solution for efficient water treatment and heavy metal removal.

Robust silica-graphene oxide nanocomposite membrane for separating NaCl salt from seawater under atmospheric pressure

When graphene oxide (GO) based membranes are used to filter high concentration salt ion solutions at atmosphere pressure, flow of water molecules is easily blocked by the narrow spaces of graphene oxide membrane (GM), thus causing severely reduced permeability. To solve this problem, in this study, multilayer and composite framework membranes with multiple scale porous channels of sub-nanometer to tens of nanometers was designed and synthesized to promote effective flow of water molecules. These nanocomposite membranes were fabricated by crosslinking, condensation and self-assembly of polyacrylic acid (PAA), nanosized silica (SiO2) and GO onto nylon membrane substrates using a vacuum filtration method. Their permeance obtained using 35 g·L−1 NaCl solution at a pressure of 0.98 bar was 38.6 L∙m−2∙h−1∙bar−1, about 1400 times of that using GM only, and their average retention rate was 27 %. The mechanisms of effective salt removal using these nanocomposite membranes were identified. Firstly the nanoscale SiO2 increased the permeated flux of water by increasing the spacings and defects of GO sheets. The barrier structures and nanochannels formed by adding nanoscale SiO2 effectively block the salt ions. Finally electrostatic adsorption of GO sheets and PAA provided more ion adsorption and rejection rates using the GO sheets.

Removing the trace organic compounds using graphene oxide nanocomposite membrane cross-linked by melamine

In this study graphene oxide (GO) based active layer was formed on microfiltration substrate to prepared thin file composite forward osmosis (TFC-FO) membrane with high rejection to pesticides. The ideal GO-based membrane should have high stability, durability, and selectivity. To improve the stability of GO based TFC membrane in aqueous solution the GO nanosheets were cross-linked with melamine monomer. An anchoring carbon-nitrogen covalent bond between the GO nanosheets and melamine molecules is thought to supplement to form the nanocomposite structure. As a result of the configuration of melamine molecules within the channel region, a nanocomposite structure has been formed which provides an optimal condition for resisting the flow of hydrated salt ions but creating a pathway for water molecules to flow. According to the FO tests with different draw solutions against DI water feed, the prepared GOM membranes (GO based active layer crosslinked with melamine) showed best performance with trisodium citrate (TSC) draw solution. In the FO model, a water flux of 18.1 LMH was obtained using TSC, which was 970% higher than the NaCl, while the reverse solute diffusion was reduced by 1100%. The effect of GO thickness on FO performance was also studied, by changing GO solution volume during active layer coating (10, 15 and 20 mL GO solution with concentration of 0.1 mg/mL). Result showed that by increasing the GO thickness the water flux increased from 13.7 LMH in GOM.10 to 18.1 in GOM.15. In addition, the nanocomposite membrane shows high rejection against of both diazinon (99.4%) and atrazine (97.3%). In relation to these results, it can be concluded that GO-based membranes can provide clean water in the FO process as an alternative to polymer-based TFC membranes.

Polyvinyl Alcohol/Graphene Oxide Nanocomposite Membrane for Highly Efficient Oil/Water Mixture Separation

The growing amount of oily wastewater caused by frequent oil spill accidents poses a severe threat to the ecological environment. Therefore, the development of highly efficient oil/water separation methods is highly necessary. This work reports the preparation of a nanocomposite membrane using graphene oxide (GO)/polyvinyl alcohol (PVA) coated on steel meshes for oil/water mixture separation. PVA firmly anchors GO nanosheets onto the mesh surface through strong hydrogen bonds using glutaraldehyde (GA) as a crosslinker. This nanocomposite membrane exhibited superhydrophilic and underwater superoleophobic properties, with the highest oil contact angle of 158º due to its highly rough structure. The synergistic effects of GO and PVA further improved the superhydrophilicity of the prepared membrane, due to the hydrophilic nature of both GO and PVA. The separation efficiencies and water flux for a variety of oil/water mixtures were above 97.8% and 6000.0 L m−2 h−1, respectively. The prepared membrane showed excellent chemical resistance under harsh conditions without evident change in its surface wettability. Moreover, its underwater superoleophobicity was maintained after 10 cycles of abrasion testing.

Effect of Copper Oxide Nanoparticles on the Performance of Polyvinyl Chloride Membranes

AbstractPolyvinyl chloride (PVC)/copper oxide (CuO) nanocomposite membranes were fabricated at different CuO nanoparticles loading levels using the phase inversion method. The fabricated membranes were tested through two filtration cycles in a submerged membrane system to remove bovine serum albumin (BSA) from water. Results showed that the hydrophilicity and porosity of the nanocomposite membranes were enhanced with an increase of CuO nanoparticles loading. The field emission electron microscopy images from the membrane surface demonstrated that the number and size of pores increased with addition of CuO nanoparticles. The atomic force microscopy test displayed that all nanocomposite membranes showed lower surface roughness in comparison to neat PVC membranes. The obtained results from membrane performance indicated that the irreversible fouling ratio for neat PVC membranes in the first and second cycles of filtration decreased for PVC/CuO‐1.5 membranes. Compared with the neat PVC membrane, the membrane containing CuO exhibited better capabilities such as the enhanced permeation flux, higher BSA rejection rate, and better antifouling properties.

An effective alkaline solid electrolyte with magnetic field-aligned Fe3O4–GO nanofillers in a polybenzimidazole membrane for methanol fuel cells

In this work, alkaline-doped polybenzimidazole/magnetite–graphene oxide (PBI/Fe3O4–GO) nanocomposite membranes are successfully synthesized for enhanced ion conduction and suppressed alcohol permeation for use in direct methanol alkaline fuel cells (DMAFCs). The structural, morphological, and magnetic properties of Fe3O4–GO nanofillers are thoroughly investigated. During the membrane drying step, the Fe3O4–GO nanofillers are aligned in a polymeric PBI matrix using an applied magnetic field (MF). Without an MF, the nanofillers are randomly distributed in the PBI matrix. The composite membrane with the MF demonstrates a 2- to 3-fold increase in hydroxide conductivity (7.6 × 10−2 S cm−1) and a one-order of magnitude reduction in fuel permeability (9.96×10−7 cm2 s−1) compared to the other samples. The potassium hydroxide (KOH)-doped PBI/Fe3O4–GO composite with MF achieves a higher maximum power density (Pmax) of 226 mW cm−2 at 80 °C than the other samples. The composite membrane with an MF demonstrates good long-term durability of 107 h with low voltage decay (6.5 × 10−4 V h−1) at high alkaline concentrations (6 M KOH). The results indicate that a small amount (0.5 wt%) of Fe3O4–GO nanofillers has an extensive effect on membrane properties in DMAFCs.

Development of PVA/GO Nanocomposites Membranes for Air-Filtration and Purification

Climate change due to the air pollution is actually one of the largest environmental challenges worldwide. Preparation and development of stable and highly efficient nanocomposite membranes remain a significant goal because of its enormous importance of controlling the environment. This study investigated a simple synthesis of poly (vinyl alcohol)/graphene oxide (PVA/GO) nanocomposite membrane for air pollutant remediation. The chemical and physical structures, morphologies, and conductivities were investigated as a function of the GO loading. The objective of the present study was to evaluate the efficiency of novel PVA/GO membranes in the removal of both formaldehyde (FA) as a pollutant VOCs model and SO2 as a model of greenhouse gases. Furthermore, the purpose of this study is to identify good predictors for selecting the appropriate optimal GO content in GO/PVA nanocomposites that exhibit higher air pollutant removal performance as well as design an economical GO/PVA nanocomposite air purification system for removal of the air pollutants in the field. To our knowledge, field application of GO/PVA nanocomposite volatile organic compound (VOCS) filters and control of SO2 gas pollutants from indoor air has not yet been realized. The nanocomposite membranes with an optimum GO content exhibited higher removal performance for the FA gas pollutant, this enhancement reached 90% in the laboratory scale. However, during the application in the field, it showed 75% FA removed from the indoor air. These new nano-membranes reveal also wide efficiencies of SO2 removal (80%) when applied in the field. Therefore, this filter system proved an excellent efficacy in the removal of air pollutants and could be more promising in various industrial applications.

Efficiency evaluation of titanium oxide nanocomposite membrane in adsorption of chromium from oil effluents.

Reverse osmosis and nanofiltration (NF) are the essential physical separation technologies used to remove contaminants from liquid streams. A hybrid of nanofiltration and forward osmosis (FO) was used to increase the removal efficiency of heavy metals in synthesized oil effluents. Thin-film nanocomposite (TFN) membranes were synthesized by applying surface polymerization on a polysulfone substrate to use in the forward osmosis process. The impact of different membrane fabrication conditions such as time, temperature, and pressure on effluent flux, the effect of different concentrations of the heavy metal solution on adsorption rate and sedimentation rate, the impact of TiO2 nanoparticles on the performance and structure of forward osmosis membranes were investigated. The morphology, composition, and properties of TiO2 nanocomposites made by the infrared spectrometer and X-ray diffraction (XRD) were studied. Kinetic modeling and Langmuir, Freundlich, and Tamkin relationships were used to draw adsorption isotherms and evaluate adsorption equilibrium data. The results indicated that pressure and temperature directly affect water outlet flux, and time affects it indirectly. Evaluating the isothermal relationships revealed that chromium adsorption from the TFN 0.05ppm membrane and thin-film composite (TFC) membrane follows the Langmuir model with correlation coefficients of 0.996 and 0.995, respectively. The significant removal of heavy metals and the acceptable amount of water flux demonstrated the appropriate potential of the titanium oxide nanocomposite membrane, which can be used as an effective adsorbent to remove chromium from aqueous solutions.

Optical investigation of the effect of laser radiation on lignosulfonate–polyvinyl alcohol/nickel oxide nanocomposite membrane

In the present work, we used the solgel and ex situ casting techniques to synthesize a nanocomposite membrane (NCM) composed of lignosulfonate (LGS), polyvinyl alcohol (PVA), and nickel oxide (NiO) nanoparticles. Samples from the synthesized NCM were exposed to different laser fluences in the range 2–22 J/cm2. UV–vis spectroscopy and the CIE methodology were used to study the resultant effect of laser on the optical and color characteristics of the NCM. The increase of fluence up to 22 J/cm2 causes a drop in the optical bandgap (Eg) values from 5.88 to 5.56 eV when n = 1/2, associated with a rise in the refractive index. We attribute these changes to cross-linking that destroys the ordered regions and thus increases the amorphous phase. This cross-linking can lead to a more compacted structure of the LGS–PVA/NiO NCM. Additionally, the values of optical dielectric loss were calculated and plotted versus energy. The values of Eg attained from ɛ″ versus energy are nearby to those values attained by means of Tauc's relation when n = 1/2, indicating that the LGS–PVA/NiO NCM exhibited direct allowed transition. Furthermore, the CIE method was used to evaluate the color differences between the exposed NCMs and the pristine ones. We found that the value of color intensity is more than 5, suggesting permanent color changes.

Synergistic effect of silica-covered graphene oxide (in-situ) hybrid nanocomposites for use as a polymer electrolyte membrane for fuel cell applications

Herein, an efficient nanocomposite polymer electrolyte membrane has been designed by the synergistic combination of graphene oxide and SiO2 by following a facile and cost-effective in-situ synthesis method. The successful formation and covalent attachment of the SiO2 nanoparticles over the G surface have been validated from FTIR, XRD, Raman and TGA studies. The surface morphologies with even dispersion capacity and particle size of the synthesized nanoparticles were also studied from FESEM-EDS, TEM, and particle size analyser, respectively. Then the GS/PVDF-co-HFP nanocomposite membranes were prepared via solution casting followed by functionalization with chlorosulfonic acid. These new sulfonated PVDF-co-HFP-based SiO2-covered graphene oxide nanocomposite membranes (SPCGS) had improved properties attributing to increased water absorption, ion exchange capacities, and increased proton conductivities. Further, the barrier effect rendered by the GS nanoparticles assists in decreased methanol permeability of the SPCGS membranes due to the tortuosity of the methanol flow channels. The potentiality of the membrane was further assessed from chemical structure analysis, and morphological, thermal, and mechanical analyses like FTIR, NMR, XRD, FESEM-EDS, TGA and UTM, etc. Interestingly, the membrane selectivity has been enhanced up to 3.58 × 105 S.scm−3 thereby depicting the potentiality of SPCGS membranes in DMFC.

Synthesis of heterogeneous metal organic Framework-Graphene oxide nanocomposite membranes for water treatment

Textile wastewater is one of the most challenging streams for wastewater treatment as it is heavily contaminated with solid pollutants such as dyes. Nanofiltration (NF) membranes are a promising method to protect water resources by removing dyes and other organic contaminants from wastewater. In this study, novel NF membranes composed of a thin layer of graphene oxide (GO) and Zn-based metal–organic framework (ZIF-7) nanocomposites deposited on chitosan (CTS)-coated polyethersulfone (PES) substrate were fabricated to remove DIRECT RED 16 (DR16) dyes and humic acid from synthetic wastewater. The membrane structure was characterized using a variety of characterization methods such as SEM, XPS, FTIR, AFM, EDX, and water contact angle measurements. Introducing the GO-ZIF-7 nanocomposite layer improved the surface hydrophilicity of membranes by decreasing the contact angle from 84.9 % to 64.5 % for CTS-coated and 5GO-ZIF-7 modified membranes, respectively. This resulted in a greater dye removal rate for the modified membrane (∼94 %) compared to the original CTS-coated membrane (∼84 %). However, the pure water flux was reduced by 11.4 % due to the introduction of additional resistance layers. Furthermore, the addition of GO-ZIF-7 enhanced the antifouling and anti-biofouling characteristics of modified membranes against various organic and biological foulants, such as sodium alginate and Escherichia coli (E.coli). Overall, the fabricated membrane showed great dye filtration, antifouling, and anti-biofouling performances, by introducing high hydrophilicity, biocidal activities, and a negative surface charge to the membrane surface.

Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment

Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment

Wound healing treatment of local insulin injection with topical chitosan/ Zinc oxide nanocomposite membrane in diabetic rats model

Wound healing treatment of local insulin injection with topical chitosan/ Zinc oxide nanocomposite membrane in diabetic rats model

Wounds healing activities of topical chitosan/ Zinc oxide nanocomposite membrane and local insulin injection in diabetic rats through activation of growth factors and suppression of matrix metalloproteinase expressions

Wounds healing activities of topical chitosan/ Zinc oxide nanocomposite membrane and local insulin injection in diabetic rats through activation of growth factors and suppression of matrix metalloproteinase expressions

The Design of Ternary Composite Polyurethane Membranes with an Enhanced Photocatalytic Degradation Potential for the Removal of Anionic Dyes

Photocatalysis is an efficient and an eco-friendly way to eliminate organic pollutants from wastewater and filtration media. The major dilemma coupled with conventional membrane technology in wastewater remediation is fouling. In this study, the photocatalytic degradation potential of novel thermoplastic polyurethane (TPU) based NiO on aminated graphene oxide (NH2-GO) nanocomposite membranes was explored. The fabrication of TPU-NiO/NH2-GO membranes was achieved by the phase inversion method and analyzed for their performances. The membranes were effectively characterized in terms of surface morphology, functional group, and crystalline phase identification, using scanning electron microscopy, Fourier transformed infrared spectroscopy, and X-ray diffraction analysis, respectively. The prepared materials were investigated in terms of photocatalytic degradation potential against selected pollutants. Approximately 94% dye removal efficiency was observed under optimized conditions (i.e., reaction time = 180 min, pH 3–4, photocatalyst dose = 80 mg/100 mL, and oxidant dose = 10 mM). The optimized membranes possessed effective pure water flux and excellent dye rejection (approximately 94%) under 4 bar pressure. The nickel leaching in the treated wastewater sample was determined using inductively coupled plasma-optical emission spectrometry (ICP-OES). The obtained data was kinetically analyzed using first- and second-order reaction kinetic models. A first-order kinetic study was suited for the present study. Besides, the proposed membranes provided excellent photocatalytic ability up to six reusability cycles. The combination of TPU and NH2-GO provided effective strength to membranes and the immobilization of NiO nanoparticles improved the photocatalytic behavior.

Removal of Hexavalent Chromium(VI) from Wastewater Using Chitosan-Coated Iron Oxide Nanocomposite Membranes.

Chromium is a toxic and carcinogenic heavy metal that originates from various human activities. Therefore, the effective removal of chromium from aqueous solutions is an extremely important global challenge. Herein, we report a chitosan-coated iron oxide nanoparticle immobilized hydrophilic poly(vinylidene) fluoride membrane (Chi@Fe2O3–PVDF) which can potentially be used for efficient removal of hexavalent chromium(VI) by a simple filtration process. Membrane filtration is an easy and efficient method for treating large volumes of water in a short duration. The adsorption experiments were conducted by batch and continuous in-flow systems. The experimental data showed rapid capture of hexavalent chromium (Cr(VI)) which can be explained by the pseudo-second-order kinetic and Langmuir isotherm model. The nanocomposite membrane exhibited high adsorption capacity for Cr(VI) (14.451 mg/g in batch system, 14.104 mg/g in continuous in-flow system). Moreover, its removal efficiency was not changed significantly in the presence of several competing ions, i.e., Cl−, NO3−, SO42−, and PO43−. Consequently, the Chi@Fe2O3-PVDF-based filtration process is expected to show a promising direction and be developed as a practical method for wastewater treatment.