ZIF-67 Particles Research Articles

Stable metal–organic framework fixing within zeolite beads for effectively static and continuous flow degradation of tetracycline by peroxymonosulfate activation

Heterogeneous peroxymonosulfate (PMS) based advanced oxidation process has been proven as a promising method for tetracycline removal from water. Among the heterogeneous catalysts, Co based metal–organic framework (ZIF-67) is a good candidate to activate PMS in the aforementioned advanced oxidation system. However, their high metal ion leaching and fine powder form limit their practical application. Herein, zeolite bead-supported ZIF-67 was prepared through the Co ion-exchange and organic ligand reaction, which is simple, cost-efficient and recyclable. The obtained zeolite@ZIF-67 composites were employed for PMS activation to degrade tetracycline in the water. The uniform ZIF-67 loading could provide abundant catalytic sites and the results demonstrated that 93.7% of tetracycline (50 mg/L) could be removed in 60 min with high recycling stability. Intriguingly, due to the strong metal-support interaction, the Co ion leaching from the composite beads during the degradation reaction was much lower compared to pure ZIF-67 particles. In addition, zeolite@ZIF-67 composites with the microsphere form could be easily packed into the bed column to effectively remove tetracycline in a continuous flow process. The degradable mechanism and degradation pathway were comprehensively investigated by quenching experiments, electron paramagnetic resonance spectra, X-ray photoelectron spectroscopy and liquid chromatography-mass spectroscopy. Overall, our work provides a novel PMS heterogeneous catalyst based on macroscopic supported MOF composites for efficient tetracycline removal.

Fiber-intercepting-particle structured MOF fabrics for simultaneous solar vapor generation and organic pollutant adsorption

Solar vapor generation (SVG) has been considered as a promising approach to alleviate the water crisis. However, solar vapor generation from wastewater causes secondary pollution since the contaminants cannot be efficiently separated from the remained wastewater. Here we demonstrate a novel fiber-intercepting-particle structured MOF fabric by integrating spraying process with electrospinning technique for simultaneous solar vapor generation and organic pollutant adsorption. The fabrication strategy not only maintains the inherent pore structure of ZIF-67 particles, but also enables photothermal functionalization of the nanofiber scaffold, offering distinct advantages over the commonly used co-electrospinning and surface decoration methods. As a result, the prepared fiber-intercepting-particle structured MOF fabrics achieve a high solar absorption of 94.2%, fast evaporation rate of 1.50 kg m−2h−1 and ultrahigh malachite green (MG) adsorption capacity of 198.1 mg g−1 under one sun. Furthermore, the contaminant removal efficiency of MG is as high as 99.9% with the assistance of solar irradiation. The structure design of MOF fabrics and SVG-enhanced adsorption strategy for water purification in this work will inspire the development of superior water treatment technology.

Ag@ZIF-67 decorated cotton fabric as flexible, stable and sensitive SERS substrate for label-free detection of phenol-soluble modulin

Although strategies of compositing noble materials and Zeolitic imidazolate frameworks (ZIFs) have been used to enhance the performance of ZIF-based surface-enhanced Raman scattering (SERS) substrates, the enhancement process still remains unclear and the sampling process with powder-form substrates is challenging for practical applications. In this study, a flexible SERS substrate with silver (Ag) nanoparticle decorated ZIF-67 as the active materials and cotton fabric as the supporting framework is developed with a facile method in two steps. The proposed flexible SERS substrate not only can reduce difficulties during the sampling process, but also expands future applications for sampling towards irregular target substances. Meanwhile, the enhancement mechanism has been investigated by using Methylene Blue to probe the molecular interactions. The constructed SERS substrate shows the highest enhancement factor of 6.25 × 106 and an excellent detection sensitivity with a limitation of detection (LoD) of 10–14 M/L. Because of its excellent performance in SERS tracing, the proposed SERS substrate shows exceptional ability in detecting and identifying phenol-soluble modulins and is considered to be a label-free approach that requires no adding markers/tags or antibodies. The proposed substrate expands the potential applications of SERS technology for rapid detection of bacterial toxins during clinical diagnoses and treatment.Graphic abstractAg decorated ZIF-67 particles are anchored onto cotton fabric to fabricate flexible SERS substrates. The proposed flexible SERS substrate achieves high SERS activity with high enhancement factor, low LoD, good reproducibility and stability. The flexible SERS substrate shows great potential in detection and identification of Phenol-soluble modulin.

Silica-coated metal-organic framework-β-FeOOH hybrid for improving the flame retardant and smoke suppressive properties of epoxy resin

ABSTRACT In order to improve the flame retardancy and smoke suppression of epoxy resin (EP), ZIF-67 particles were loaded on β-FeOOH by electrostatic action and coated with SiO2 to prepare SiO2@ZIF-67-β-FeOOH (SZF). Scanning electron microscope (SEM) results showed that the SZF hybrid was successfully prepared. Different proportions of SZF were added to EP to study its combustion performance. The combustion results show that the limiting oxygen index (LOI) of the SZF composite with 5% flame retardant is increased to 31.9%, and the UL-94 flame retardant rating is increased to V-0. Peak heat release rate (pHRR), total heat release (THR), smoke release rate (SPR) and total smoke release (TSP) were reduced by 64.0%, 48.2%, 31.4% and 48.3%, respectively. According to the results of carbon analysis, the main flame retardant and smoke suppression mechanisms of SZF are analysed. In this work, a new idea is provided for improving the flame retardant and smoke suppression performance of EP.

Prussian blue-carboxylated MWCNTs/ZIF-67 composite: a new electrochemical sensing platform for paracetamol detection with high sensitivity

In this study, the composite of Prussian blue-carboxylated MWCNTs/ZIF-67 (PB-MWCNTs-COOH/ZIF-67) was synthesized and used as modified electrode material to fabricate an electrochemical sensor for the determination of paracetamol (PAR). In this sensor system, negatively charged MWCNTs-COOH as support for the immobilization of positively charged PB can effectively avoid the agglomeration of PB and enhance the stability, conductivity and catalytic activity of the composite. ZIF-67 particles coating outside PB-MWCNTs-COOH promotes the concentration of PAR. Benefiting from the synergistic effect, the PB-MWCNTs-COOH/ZIF-67 based sensor exhibits significantly improved electrochemical sensing behavior toward the oxidation of PAR. Under the optimum conditions, the PAR sensor presents wide linear ranges of 0.01–70 μM with a low limit of detection of 3.3 nM (S/N = 3). The method also possesses long-term stability, good reproducibility and selectivity, and was employed to the determination of PAR contents in PAR tablets sample.

Synthesis of graphene oxide nanosheets decorated by nanoporous zeolite-imidazole (ZIF-67) based metal-organic framework with controlled-release corrosion inhibitor performance: Experimental and detailed DFT-D theoretical explorations

For the first time, the zeolite-imidazole (ZIF-67) framework, a new subfamily of metal-organic frameworks (MOFs), is synthesized on the graphene oxide (GO) platform. Co2+ (as a central atom) and 2-methylimidazole (as organic ligands) were assembled to fabricate ZIF-67/GO NPs for providing epoxy-based anti-corrosion coatings with both active (self-healing) and passive (barrier) performance. Also, the ZIF-67/GO NPs were modified by 3-Aminopropyl triethoxysilane (APS) to improve the particles compatibility with the epoxy matrix and control their solubility in saline media. The FE-SEM, FT-IR, UV–Vis, Raman, TGA, and low-angle XRD techniques were used to prove the successful ZIF-67 particles growth onto the GO platforms. Tafel (potentiodynamic) polarization test demonstrated that the ZIF-67/GO@APS NPs could protect the surface of steel through mixed anodic/cathodic type (O2 reduction/Fe oxidation) mechanisms and the corrosion current density of the iron sample decreased to 1.41 µA·cm−2. Interestingly, the epoxy coatings containing ZIF-67/GO and ZIF-67/GO@APS particles revealed long-term corrosion protection durability and outstanding self-healing anti-corrosion performance, which were well studied via EIS, salt spray, cathodic delamination, and pull-off techniques. The impedance value at the lowest frequency for the coating containing ZIF-67/GO@APS after 50 days decreased from 10.7 Ω·cm2 to 10.2 Ω·cm2 that showed the lowest reduction among the studied samples.

Voltammetric determination of Auramine O with ZIF-67/Fe2O3/g-C3N4-modified electrode

In the present work, the synthesis of ZIF-67/Fe2O3/g-C3N4 and its use for voltammetric determination of Auramine O are demonstrated. The resulting materials were characterized by means of X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption/desorption isotherm. The composite composes of polyhedron ZIF-67 particles evenly decorated with flocculent Fe2O3/g-C3N4 and has a specific surface area of 600 m2.g− 1. Cyclic voltammetry and differential pulse voltammetry were performed to investigate the electrochemical behavior of Auramine O at ZIF-67/Fe2O3/g-C3N4-modified electrode. An excellent linear relationship between the anodic peak current and Auramine O concentration was found in the range of 1.9–17 µM under the optimized experimental conditions. The proposed electrochemical method exhibits high repeatability with a low detection limit of 0.65 µM. This method was successfully employed to the determine Auramine O in pickled vegetable samples, showing excellent agreement with the results obtained from HPLC analysis.

Anchoring ZIF-67 particles on amidoximerized polyacrylonitrile fibers for radionuclide sequestration in wastewater and seawater

Capturing uranium (U(VI)) ions from wastewater and seawater is highly attractive for the environment and clean energy with the increasing deficiency of land sources. Howbeit, the massive volume of water and the ultralow concentration of U(VI) pose a substantial challenge to the industrial application. Accordingly, we have synthesized a novel organic-inorganic hybrid adsorbent through in-situ growing MOF particles on electrospun polyacrylonitrile fibers (PAN) followed by modifing with amidoxime groups to form amidoximed PAN/ZIF-67 (AOPAN/ZIF) hybrid fibers. In such fibers, the N atoms from imidazole and amidoxime can improve the adsorption performance synergistically in a wide pH range, which is favorable for capturing U(VI) under nuclear wastewater and seawater. As a result, the AOPAN/ZIF fibers exhibit high adsorption amount of 498.4 mg g−1 in U(VI) contaminated aqueous solution at pH 4. Furthermore, the adsorption amount of U(VI) reached 2.03 mg g−1 in natural seawater after 36 d, which implies that the AOPAN/ZIF fibers may promote the development of U(VI) recovery.

Triple Amplification of 3,4,9,10-Perylenetetracarboxylic Acid by Co2+-Based Metal-Organic Frameworks and Silver-Cysteine and Its Potential Application for Ultrasensitive Assay of Procalcitonin.

In this work, a triple-amplified biosensor with a bioactivity-maintained peculiarity was constructed for quantitative procalcitonin (PCT) detection. As everyone knows, a strong electrochemiluminescence (ECL) signal is the premise to ensure high sensitivity for trace target detection. Hence, a valid tactic was developed to achieve signal amplification of luminophor by using Co2+-based metal-organic frameworks (ZIF-67) and silver-cysteine (AgCys). The ZIF-67 particles, which have more atomically dispersed Co2+, could play the role of a co-reaction accelerator to catalyze S2O82- to generate abundant Co3+ and sulfate radical anions (SO4•-). Afterward, a mass of Co3+ was reduced to more hydroxyl radicals (OH•) by H2O, thus ulteriorly reducing S2O82- to generate more SO4•-. Remarkably, S2O82- was reduced to SO4•- continuously with the recycling of Co2+ and Co3+, which realized an effective signal amplification. Meanwhile, the AgCys complex with superior catalysis and biocompatibility was prepared to further improve the ECL signal and maintain the bioactivity of the biomolecule. Furthermore, HWRGWVC, a heptapeptide that was used for combining the Fc fragments of an antibody by Au-S bonding to achieve the fixed point fixation, could not only maintain bioactivity of an antibody but also improved its incubation efficiency, thus further enhancing biosensor sensitivity. Under optimum conditions, the proposed biosensor realized highly sensitive assay for PCT with a wide dynamic range from 10 fg/mL to 100 ng/mL and a detection limit as low as 3.67 fg/mL. With superior stability, selectivity, and repeatability, the prepared biosensor revealed immense potential application of ultrasensitive assay for PCT in human serum.

Dramatically enhanced electromagnetic wave absorption of hierarchical CNT/Co/C fiber derived from cotton and metal-organic-framework

Lightweight, low-cost electromagnetic (EM) wave absorption materials are in urgent need, as EM interference pollution is increasingly serious. Carbon material as EM absorber has attracted ever increasing attention. However, their absorption property is still limited. Herein, we propose a very simple strategy to prepare hierarchical carbon fiber coated with Co/C nano-dodecahedron particles where CNTs were anchored (HCF@CZ-CNTs), using cotton and metal-organic-framework (MOF) as raw materials. One of MOF, ZIF-67 particles were in-situ grown onto the surface of cotton fibers. Lightweight HCF@CZ-CNTs samples were obtained by direct carbonization, the apparent density of which is only 0.0198 g/cm3. The minimum reflection loss (RLmin) of hierarchical HCF@CZ-CNTs was dramatically enhanced to −53.5 dB at 7.8 GHz, compared with pure carbonized cotton fiber (RLmin = −18.9 dB at 16 GHz). Meanwhile the effectively absorption bandwidth was also remarkably enlarged to 8.02 GHz. The excellent EM wave absorption performance is attributed to the micro-to-nano hierarchical hollow fibrous structure, as well as the synergetic effect of polarization relaxation and magnetic loss. These results illuminate a low-cost and sustainable strategy to prepare ultra-lightweight microwave absorbers with excellent EM wave absorbing ability utilizing biomass precursor and MOF.

Rational design of interlaced Co9S8/carbon composites from ZIF-67/cellulose nanofibers for enhanced lithium storage

Cellulose nanofibers (CNFs) are used to string ZIF-67 particles and interlaced Co9S8/porous carbon composite (Co9S8/C-CNFs) is obtained via carbonization and sulphidation of ZIF-67/CNFs composites. The CNFs can effectively limit the growth of ZIF-67 particles and avoid the agglomeration and most importantly, serve as the conductive skeleton to “bridge” carbonized ZIF-67 particles after carbonization. Due to the unique structure and the improved conductivity, Co9S8/C-CNFs as anode of lithium-ion batteries exhibits enhanced electrochemical properties and the specific capacity is 700 mAh g−1 at current density of 500 mA g−1 after 150 cycles compared to that of 342 mAh g−1 for samples without CNFs incorporation. Such nanoscale design may boost to explore other nanocomposites for energy storage.

String of pyrolyzed ZIF-67 particles on carbon fibers for high-performance electrocatalysis

ZIF-67 comprises alternately arranged cobalt atoms and nitrogen-rich organic linkers, making it an ideal single source precursor to producing Co and N co-doped carbon (C-ZIF-67) catalyst for oxygen reduction reaction (ORR). C-ZIF-67 particle catalyst in air-cathode, however, often shows limited activity and stability because of the particle-to-particle resistances and particle detachment issues. Herein, we introduce an in-situ approach to selectively growing ZIF-67 on electrospun polyacrylonitrile (PAN) fibers, forming an interesting “gems-on-string” structured PAN@ZIF-67 hybrid. Upon pyrolysis the hybrid is converted to conductive C-PAN@ZIF-67 with well-retained hierarchical structure, showing high ORR activity with excellent durability in alkaline electrolyte. A zinc-air battery (ZnAB) using C-PAN@ZIF-67 in air-cathode delivers a stable discharge voltage of 1.24 V at a high current density of 20 mA cm−2. With the regeneration of the cell after its full-discharges by mechanically replenishing the zinc anode and the electrolyte, a continuous operation over 38 days is demonstrated with the discharge voltage above 1.0 V at a current density of 10 mA cm−2. Significantly, a freestanding C-PAN@ZIF-67 mat serves directly as the flexible cathode for thin and bendable ZnABs to deliver high discharge voltages in both flat and bent states, promising great potential for future wearable electronics.

Shape-Defined Hollow Structural Co-MOF-74 and Metal Nanoparticles@Co-MOF-74 Composite through a Transformation Strategy for Enhanced Photocatalysis Performance.

In recent years, metal-organic frameworks (MOFs) have received extensive interest because of the diversity of their composition, structure, and function. To promote the MOFs' function and performance, the construction of hollow structural metal-organic frameworks and nanoparticle-MOF composites is significantly effective but remains a considerable challenge. In this article, a transformation strategy is developed to synthesize hollow structural Co-MOF-74 by solvothermal transformation of ZIF-67. These Co-MOF-74 particles exhibit a double-layer hollow shell structure without remarkable shape change compared to original ZIF-67 particles. The formation of hollow structure stemmed from the density difference of Co between ZIF-67 and Co-MOF-74. By this strategy, hollow structural Co-MOF-74 with different sizes and shapes are obtained from corresponding ZIF-67, and metal nanoparticles@Co-MOF-74 is synthesized by corresponding nanoparticles@Co-ZIF-67. To verify the structural advantages of hollow structural Co-MOF-74 and Ag nanoparticles@Co-MOF-74, photocatalytic CO2 reduction is used as a model reaction. Conventionally synthesized Co-MOF-74 (MOF-74-C), hollow structural Co-MOF-74 synthesized by transformation method (MOF-74-T) and Ag nanoparticles@Co-MOF-74 (AgNPs@MOF-74) are used as cocatalysts in this reaction. As a result, the cocatalytic activity of MOF-74-T and AgNPs@MOF-74 is 1.8 times and 3.8 times that of MOF-74-C, respectively.

Effect of ionic liquids (ILs) on MOFs/polymer interfacial enhancement in mixed matrix membranes

Strong interfacial interactions between the filler(s) and chosen polymer in mixed matrix membranes (MMMs) is a crucial factor in obtaining high gas separation efficiency. However, it is challenging to obtain excellent filler/polymer contact simply by direct incorporation of micron-sized metal-organic frameworks (MOFs) into a polymer matrix without modification. In this study micron-sized ZIF-67 particles were coated with a thin layer of 3 different ionic liquids (ILs) and characterized for the change in adsorption properties. The coated ZIF-67 particles were then incorporated into 6FDA-durene polymer at different loadings to fabricate MMMs for gas separation. Playing the role of interfacial binder, all ILs effectively enhanced the polymer/ZIF adhesion, minimizing the formation of non-selective interfacial defects, which was evidenced by the scanning electron microscopy (SEM) as well as by the focus ion beam scanning electron microscopy (FIB-SEM), leading to an increment in CO2/N2, CO2/CH4 and C3H6/C3H8 selectivity. The successful combination of ZIF-67/IL is proposed as a potential method to overcome the interfacial issues in MMMs, particularly in the application of larger micron-sized fillers.

Synthesis and Characterization of Core-Shell Metal-Organic Framework (ZIF-67@ZIF-8) Particles

Zeolitic imidazolate frameworks (ZIFs) are a novel class of porous materials composed of metal ions and imidazole linkers. Here we focus on core-shell particles, where ZIF-67 core particles are covered with ZIF-8 shells (ZIF-67@ZIF-8). However, the synthesis of ZIF-67@ZIF-8 is generally difficult because the nucleation rate of ZIF-8 is so high that self-nucleation is unavoidable. In this study, we propose the following two approaches to overcome this challenge: (1) decreasing the nucleation rate by changing the water to methanol ratio used as solvents; and (2) intensifying the mixing during the synthesis by using a microreactor. Our experiments demonstrated that an increase in the water ratio suppresses the self-nucleation of the ZIF-8 particles, whereas surfaces of the resultant ZIF-67@ZIF-8 particles become irregular. The ZIF-67@ZIF-8 particles with uneven surfaces experienced an approximately 14% decrease in the adsorption amount as compared with that of the ZIF-67 particles. In contrast, the microreactor successfully produced ZIF-67@ZIF-8 particles with a smooth surface and high surface area. Our study revealed that intensive mixing is key to obtain uniform core-shell particles.

Preparation of a ZIF-67 Derived Thin Film Electrode via Electrophoretic Deposition for Efficient Electrocatalytic Oxidation of Vanillin.

The electrophoretic deposition method is employed to deposit uniform metal organic framework thin films. ZIF-67 particles dispersed in isopropanol move to a cathode as an electric field is applied on two conducting glass electrodes, the uniform ZIF-67 thin film can be formed on the conducting glass substrate. As the deposition time is fixed at 1 min, the prepared film thickness can be adjusted from 1.0 to 7.0 μm by applying different electric fields from 20 to 60 V·cm-1. The deposited ZIF-67 thin film is further converted into porous Co9S8 thin films by the vulcanization with S powder. The porous thin films vulcanized at different temperatures are characterized by the measurements of scanning electron microscope, X-ray photoelectron spectroscopy, X-ray powder diffraction, high resolution transmission electron microscopy, and Fourier transform infrared spectra. The prepared porous Co9S8 thin films are used as the thin film electrode to catalyze the degradation of vanillin. The Co9S8 thin film vulcanized at 500 °C shows better catalytic performance than the bare glassy carbon electrode and the electrodes vulcanized at other temperatures. The electrocatalytic degradation enhancement mechanism is analyzed by the measurements of Tafel curves and electrochemical impedance spectroscopies. It can be developed as a feasible method for the electrocatalytic detection of vanillin.

Morphological and structure dual modulation of cobalt-based layer double hydroxides by Ni doping and 2-methylimidazole inducting as bifunctional electrocatalysts for overall water splitting

Developing bifunctional electrocatalysts of high-efficiency and new structures for overall water splitting are highly desirable and ongoing challenge. Herein, CoxNi10-x layer double hydroxide salts with controllable structure and morphology induced by 2-methylimidazole to derive ZIF-67 on Ni/Fe foam is reported. The as-prepared 3D CoxNi10-x layer double hydroxide microspheres are constructed by self-assembly of 2D nanoflake and 1D nanorod with ZIF-67 particles due to the double influence of Ni and 2-methylimidazole. It is discovered that the Ni and 2-methylimidazole can simultaneously modulate morphology and structure of CoxNi10-x layer double hydroxide to distinctly increase the electrochemical active surface area for exposing more accessible active sites. Notably, the 3D microsphere heterogeneous catalysis of the self-assembly combines the merits of low dimensions (1D and 2D) materials, providing high structural void porosity and fast charge transport channels. Particularly, the Co7Ni3 layer double hydroxide salts@ZIF-67/Ni/Fe foam exhibits the highest electrocatalytic activity with the lower overpotentials of 260 and 165 mV toward oxygen evolution reaction and hydrogen evolution reaction at current density of 10 mA cm−2, respectively. The outstanding activity originates from the strong electronic coupling between the 3D microsphere and ZIF-67. This work can bring a new prospect for fabricating highly-active and new structure electrocatalysts.

ZIF-67 filled PDMS mixed matrix membranes for recovery of ethanol via pervaporation

Abstract Zeolitic imidazole frameworks (ZIFs), a subclass of metal organic frameworks (MOFs), are composed of metal ions linked by organic ligands which offer an exceptionally high surface area and appealing separation potential. In this study, mixed matrix membranes (MMMs) were prepared using polydimethylsiloxane (PDMS) as a hydrophobic polymer and ZIF-67 as inorganic filler particle. ZIF-67 particles and MMMs were characterized by XRD, SEM, FTIR, BET and contact angle measurements. The prepared membranes were tested for the separation of ethanol/water mixtures via pervaporation. Compared to unfilled PDMS membranes, MMMs loaded with 20 wt% ZIF-67 showed an increase in flux and a doubled separation factor. The easy synthesis of ZIF-67 and its enhanced separation performance make ZIF-67 an attractive candidate to prepare MMMs for a variety of membrane applications.

Maintaining Stable Zeolitic Imidazolate Framework (ZIF) Templates during Polyelectrolyte Multilayer Coating

Equipping ZIF particles with a polyelectrolyte membrane provides functional groups at their interface, enabling further conjugations necessary for applications such as targeted drug delivery. Previous approaches to coat ZIF particles with polyelectrolytes led to surface corrosion of the template material. This work overcomes previous limitations by performing a Layer-by-Layer (LbL) polyelectrolyte coating onto ZIF-8 and ZIF-67 particles in non-aqueous environment. Using the 2-methylimidazolium salt of polystyrensulfonic acid instead of the acid itself and polyethyleneimine in methanol led to intact ZIF particles after polyelectrolyte coating. This was verified by electron microscopy. Further, zetapotential and atomic force microscopy measurements confirmed a continuous polyelectrolyte multilayer built up. The here reported adaption to the well-studied (LbL) polyelectrolyte self-assembly process provides a facile method to equip ZIF particles with a nanometer thin polyelectrolyte multilayer membrane.

Controlled deposition of MOFs by dip-coating in thin film nanocomposite membranes for organic solvent nanofiltration

ZIF-8 and ZIF-67 particles, with sizes of 70±10nm and 240±40nm, respectively, were deposited by dip-coating on top of polyimide P84® asymmetric supports. In the best conditions, this gives rise to a MOF (metal-organic framework) monolayer which remains on the polyimide support during the interfacial polymerization of polyamide carried out to produce a thin film nanocomposite membrane for organic solvent nanofiltration (OSN). This method is simple, shorter and is environmentally friendly, since no excess MOF is lost during the interfacial polymerization, exhibiting good OSN results: dye rejection of 90% together with a high methanol permeance of 8.7Lm−2h−1bar−1.