MOF Composites Research Articles

Significant Enhancement on the Proton Conduction Performance of Composite Membrane by Photoacid Molecules

AbstractMimicking biological proton pump phenomenon to achieve stimulus‐responsive proton conduction behavior has received long‐term attention. The Pa@Zn‐MOF (Pa = photoacids) composites are successfully prepared through adsorption photoacid in Zn‐MOF, then, the composites are mixed into poly(vinyl alcohol) (PVA) to fabricate hybrid membranes Pa@Zn‐MOF‐PVA. When the hybrid membrane is activated through 375 nm violet light at room temperature, the value of proton conductivity after illumination is always superior to that before light irradiation. This phenomenon is attributed to the light‐induced ring‐closing reaction of the photoacid molecules to give the spiro‐forms (SPs) along with an abundant release of protons. The released protons jump into hydrogen bond networks and conveniently accelerate proton transport, resulting in higher proton conductivity. This is a noteworthy demonstration of dynamic control over proton conduction in composite membrane materials by adsorption of photoacid molecules in metal–organic framework.

Photocatalytic reduction of CO2 to methanol using Zr(IV)-based MOF composite with g-C3N4 quantum dots under visible light irradiation

Considering the global warming due to the accumulation of excess CO2 in the atmosphere, it is vital to reduce the CO2emissions by capturing or converting it into value-added chemicals and fuels. Among the known materials, MOFs have great significance in capturing the CO2 and its conversion to energy efficient fuels due to its tuneability, high porosity, large surface area, unique structure, and semiconducting behavior. In the present study, graphitic carbon nitride quantum dots coupled Zr (IV) based MOF composite (g-CNQDs@MOF) has been reported for the photoreduction of CO2 to methanol selectively under visible light irradiation. Graphitic carbon nitride quantum dots (g-CNQDs) in the synthesized Zr-based MOF composite play an important role for photocatalytic CO2 reduction due to its rich photo properties thereby improving the electronic conductance properties of the composite. g-CNQDs in the Zr (IV)-based MOF composite acted as co-catalyst which enhanced the electron-hole separation by elongating the lifetime of photogenerated charge carriers on the surface of MOF composite. These excess electrons accelerated the generation of catalytically active sites on the composite’s surface to reduce CO2 selectively into methanol with better selectivity and efficient methanol formation rate.

ZIF67@MoO3 NSs@NF composite electrocatalysts reinforced by chemical bonds and oxygen vacancy for efficient oxygen evolution reaction and overall water-splitting

A kind of composite electrocatalysts with the structure of MoO 3 nanosheets coated by ZIF67 nanocrystals and grown on the nickel foam substrate (ZIF67@MoO 3 NSs@NF) is prepared and mainly used as the electrode for oxygen evolution reaction (OER) and overall water splitting. The excellent electrocatalytic activity of ZIF67@MoO 3 NSs@NF are demonstrated. It can use the overpotential (ƞ) of 178 mV and 386 mV respectively to drive 10 mA cm −2 and 50 mA cm −2 . It is also observed that the ZIF67@MoO 3 NSs@NF electrode has the highest initial current density (45.7 mA cm −2 ) at 1.618 V and can maintain more than 90% of the initial current density after 20,000 s. The ZIF67@MoO 3 NSs@NF electrode also shows the small HER overpotential of 135 mV at 10 mA cm −2 . Furthermore, the voltage of ZIF67@MoO 3 NSs@NF as a bifunctional overall water splitting catalysts is 1.58 V at 10 mA cm −2 , which is superior to another noble metal electric catalyst combination RuO 2 /NF(+)//Pt–C/NF(−). And the ZIF67@MoO 3 NSs@NF(+)//ZIF67@MoO 3 NSs@NF(−) combination can maintain more than 90% of the initial current density after 65,000 s at 1.58 V. The main reason is the composite interface of MoO 3 NSs and ZIF67 phases with Co–O bonds, C–O–Mo bonds and oxygen vacancies defects facilitates the increase of the active sites and efficient electron transfer rate. • The composite structure of MoO 3 nanosheets grown on NF and coated by ZIF67 are prepared. • The ZIF67@MoO 3 NSs@NF can use the overpotential(ƞ) of 178 mV to drive 10 mA cm −2 . • It can maintain 90% of the initial current density after 65,000 s for overall water-splitting. • Chemical bonds and oxygen vacancy facilitates the increase of the active sites. • Non-highly conductive oxides can also promote the electrocatalytic activity of MOF composite.

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.

Crystal engineering of novel MOF@iCOF composite as a multifunction platform for targeted monitoring and capturing of norfloxacin

The construction of novel multifunctional nanocomposites is of interest because of their excellent proven detection and capture performance. Herein, a new type of porous material, UiO-66-NH2@TpTGCl, is designed by combining a Zr-based metal organic framework, UiO-66-NH2, with a guanidine-based ionic covalent organic framework (iCOF), TpTGCl. The UiO-66-NH2@TpTGCl retains the high crystallinity and hierarchical pore structure of the MOF and iCOF, and has a surface rich in guanidine groups, and hence it has excellent hydrophilicity and is rich in positively charged sites; thus, the potential capacity of UiO-66-NH2@TpTGCl for the capture of antibiotics with polar functional groups, such as norfloxacin, is excellent. Tb3+ ions are then assembled onto the UiO-66-NH2@TpTGCl skeleton. With the addition of norfloxacin to the composite, strong coordination between the carboxyl group of norfloxacin and the Tb3+ ions in UiO-66-NH2@TpTGCl@Tb occurred, and the characteristic fluorescence emission of Tb3+ (5D4→7F5) is enhanced by antenna and spatial confinement effect. Consequently, ratiometric fluorescence detection and capture of norfloxacin are realized using UiO-66-NH2@TpTGCl@Tb. The linear detection range is 0.01–1 μM and the detection limit is 4 nM. Most importantly, UiO-66-NH2@TpTGCl@Tb exhibits high capture capacity (251 mg g−1) and favorable capture efficiency (80.5%). Meanwhile, the mechanism is detailed explored through XPS spectrum and DFT calculation. We believe that this work will trigger the study of new iCOF-functionalized MOF composites and that it presents a promising strategy for simultaneous ratiometric luminescence monitoring and capturing of antibiotics from water.

Self-supported metal-organic framework-based nanostructures as binder-free electrodes for supercapacitors.

Metal-organic frameworks (MOFs), an interesting class of functional inorganic materials, have recently emerged as suitable electrode materials or templates/precursors of electrode materials for supercapacitors (SCs). The key in utilizing MOF-based electrode materials is to address the low electronic conductivity and poor stability issues. Therefore, the rational design and fabrication of self-supported binder-free electrodes is considered the most promising strategy to address these challenges. In this review, we summarize the recent advances in the design and manufacture of self-supported MOF-based nanostructures and their use as binderless electrodes for SCs, especially over the last five years. The synthesis strategies for constructing pristine MOFs, MOF composites and MOF derivative arrays are overviewed. By highlighting the advantages and challenges of each class of electrode materials, we hope that this review will provide some insights into the rational design of MOF-based electrode materials to promote the future development of this highly exciting field.

A novel multi-walled carbon nanotube-coupled CoNi MOF composite enhances the oxygen evolution reaction through synergistic effects

A multi-walled carbon nanotubes (mCNTs)-coupled CoNi MOF composite was synthesized via a solvothermal method using mCNTs as a shape-directing agent and its application towards the oxygen evolution reaction (OER) was investigated in alkaline solution.

Photocatalytic reduction of low-concentration CO2 by metal-organic frameworks.

Direct conversion of diluted CO2 to value-added chemical stocks and fuels with solar energy is an energy-saving approach to relieve global warming and realize a carbon-neutral cycle. The exploration of catalysts with both efficient CO2 adsorption and reduction ability is significant to achieving this goal. Metal-organic frameworks (MOFs) are emerging in the field of low-concentration CO2 reduction due to their highly tunable structure, high porosity, abundant active sites and excellent CO2 adsorption capacity. This highlight outlines the advantages of MOFs for low-pressure CO2 adsorption and the strategies to improve the photocatalytic performance of MOF materials at low CO2 concentrations, including the functionalization of organic ligands, regulation of metal nodes and preparation of MOF composites or derivatives. This paper aims to provide possible avenues for the rational design and development of catalysts with the ability to reduce low-concentration CO2 efficiently for practical applications.

Tailoring a multifunctional magnetic cationic metal-organic framework composite for synchronous enrichment of phosphopeptides/glycopeptides.

Herein, for the first time, a multifunctional magnetic cationic MOF composite (Fe3O4@ILI-01@Ti4+) was successfully prepared for the synchronous enrichment of phosphopeptides/glycopeptides. The as-prepared Fe3O4@ILI-01@Ti4+ bears attractive properties like abundant surface positive charge and excellent hydrophilicity, ensuring that phosphopeptides/glycopeptides can be well captured based on electrostatic attraction and hydrophilic interaction. By integrating Fe3O4@ILI-01@Ti4+ and mass spectrometry (MS) determination, high sensitivity (0.5 fmol for β-casein and 0.1 fmol for HRP), excellent selectivity (1 : 5000 for β-casein : BSA and 1 : 500 for HRP : BSA, mass ratio), and high recyclability (5 cycles) were achieved. In addition, Fe3O4@ILI-01@Ti4+ exhibits superior enrichment performance on synchronous enrichment of phosphopeptides/glycopeptides from β-casein/HRP tryptic digests. Further applying it to actual samples like human serum and saliva, phosphopeptides and glycopeptides with high intensity were identified, indicating that Fe3O4@ILI-01@Ti4+ possesses great practical application value in synchronous enrichment of phosphopeptides/glycopeptides. This work offers a new channel for the application of MOFs in phosphoproteomics/glycoproteomics.

Syntheses of two copper metal-organic frameworks with tri(1,2,4-triazole) and biscarboxylate and graphene oxide composites for decomposition of dye by visible-light driven and ultrasonic assisted

Two crystalline and nano-sized new Cu(II) MOFs {[Cu(ttpa)(1,3-bdc)(H2O)]·CH3OH}n (Cu(ttpa)-1) and {[Cu(ttpa)(mip)(H2O)]•2H2O} (Cu(ttpa)-2) were prepared and characterized (ttpa ​= ​tris(4-(1,2,4-triazol-1-yl)phenyl)amine, 1,3-bdc ​= ​1,3-benzenedicarboxylate, mip ​= ​5-methyl-isophthalate) by hydrothermal method and sonochemical method. Cu(ttpa)-1 and Cu(ttpa)-2 exhibited the 2D network with point symbol {44⋅62}{44⋅62}. The effect of sonicated time, power, frequency and temperature on the morphology of nano-sized Cu(ttpa)-1 and Cu(ttpa)-2 were studied. The MOFs@10%GO composites (GO ​= ​graphite oxide) exhibited the highest activities. The catalytic decomposition of methylene blue (MB) using Cu(ttpa)-1, Cu(ttpa)-2, Cu(ttpa)-1@GO and Cu(ttpa)-2@GO composites were examined under visible light and ultrasound. Cu(ttpa)-1, Cu(ttpa)-2, Cu(ttpa)-1@GO and Cu(ttpa)-2@GO exhibited high degradation efficiency. The degradation efficiency of MB for Cu(ttpa)-1@GO was 91.2% at pH ​= ​8 after 15 ​min visible light irradiation and the photocatalytic rate constant (k) was 0.1165 ​min−1. The •OH hydroxyl radicals and •O2- superoxide were the main active matters for catalyst Cu(ttpa)-1@GO and Cu(ttpa)-2@GO in the degradation of MB. Cu(ttpa)-1@GO has the higher catalytic efficiency of degradation of MB than most of MOFs, MOFs composites and inorganic photocatalysts. Cu(ttpa)-1@GO is the good photocatalytic material.

Bimetallic CoFe-MOF@Ti3C2Tx MXene derived composites for broadband microwave absorption

Microwave absorbing materials with excellent electromagnetic wave attenuation have been applied to address electromagnetic pollution. In this work, bimetallic CoFe-MOF@Ti3C2Tx MXene derived multiple-interfacial composites with controllable structures were prepared via solvothermal, electrostatic self-assembly and thermal treatment. The morphology conversion, phase compositions, defects quantity were achieved by the thermal treatment temperature. The synthesized core-shelled CoFe/C@TiO2/C composite exhibits excellent microwave absorption properties. The minimum reflection loss values at different absorber thicknesses can reach −20 dB within 1.6–5.0 mm and the effective absorption bandwidth can reach 6.1 GHz with an absorber thickness of only 2.0 mm. The corresponding electric loss, magnetic loss and impedance matching have also been studied to explore the electromagnetic wave attenuation mechanisms. This work lays a good foundation of MOF and MXene composites derivatives as microwave absorber and opens up a way for the design of the high-performance Microwave absorbing materials.

Metal-Organic Framework superstructures with long-ranged orientational order via E-field assisted liquid crystal assembly

Most MOFs are non-cubic, with functionality dependent upon crystallographic direction, and are largely prepared as microcrystalline powders. Therefore, general methods to orient and assemble free-standing MOF crystals are especially important and urgently needed. This is addressed here through the novel strategy of E-field assisted liquid crystal assembly, applied to MIL-53-NH2(Al), MIL-68(In) and NU-1000 MOF crystals, with aspect ratios ranging from 10 to 1.2, to form highly oriented MOF superstructures which were photopolymerized to fix their long-ranged order. This new strategy for controlling MOF orientation and packing side-steps the traditional requirements of particle monodispersity, shape homogeneity and high aspect ratios (>4.7) typical of colloidal and liquid crystal assembly, and is applicable even to polydispersed MOF crystals, thereby paving the way towards the development of highly oriented MOF composites with improved functionality.

Visible-light-driven and ultrasonic-assisted copper metal-organic frameworks and graphene oxide nanocomposite for decolorization of dyes

The crystalline and nano-sized {[Cu(tipe)(H2O)](2,2′-bpdc)·11H2O·DMF}n (1·11H2O·DMF or Cu-tipe) (tipe ​= ​1,1,2,2-tetrakis (imidazole-1-yl)phenyl)ethylene, 2,2′-bpdc ​= ​2,2′-biphenyldicarboxylate) were synthesized and structural analysis by X-ray diffraction, scanning electron microscopy, optical band gaps, photoluminescence and thermal stability. Cu-tipe and graphene oxide (GO) nanocomposite (Cu-tipe/GO) was synthesized with sonochemical method and characterized. Cu-tipe exhibits a (4,4)-coordinated 2D network showing the point symbol {44·62}{44·62}. The photocatalytic and sonocatalytic decolorization of methylene blue (MB), methyl violet (MV), rhodamine B (RhB) under visible light and ultrasound irradiation showed that the catalytic efficiencies of decolorization organic dyes for Cu-tipe/GO composite are higher than these of most of MOF and MOF composite. Crystalline and nano-sized Cu-tipe also showed high decolization efficiencies. The radicals trapping experiments were carried out to study the active species and the degradation mechanism was proposed.

Novel marigold-like CuO@Cu-based MOFs composite photocatalyst for high-performance removal of alkylphenol ethoxylate under visible light

Alkylphenol polyethoxylate (APEOn) is an emerging contaminant mainly referred to nonylphenol polyethoxylate (NPEOn) and octylphenol polyethoxylate (OPEOn). A novel multiscale rough composite photocatalyst (CuO@Cu-H3BTC) with marigold-flower nanosheets and sub-micron flakes was successfully constructed for photodegradation of OPEOn and NPEOn under visible light. Several technologies (such as SEM, EDS, FTIR, XRD, XPS and EPR) were utilized to characterize the structures and properties of the as-obtained sample. The effect of OPEOn and NPEOn removal by CuO@Cu-H3BTC MOF and the influence of reaction conditions on the removal efficiency were explored. It was found that 96% of OPEOn and 79% of NPEOn were removed under the action of adsorption in darkness and degradation in visible light irradiation within 120 min when treating 25 mg/L OPEOn and NPEOn solution with 1.6 g/L of CuO@Cu-H3BTC MOF composite. The corresponding OPEOn and NPEOn removal efficiency could still achieve almost 72% and 51% after the CuO@Cu-H3BTC MOF was recycled five times, respectively. The degradation mechanism of APEOn investigation revealed that the free radicals and holes generated in the CuO@Cu-H3BTC MOF degraded APEOn, and the existence of holes was confirmed to play the major role through quenching experiment. In summary, this facile and novel CuO@Cu-H3BTC MOFs composite photocatalyst boosts the application platform in wastewater treatment.

Application of hybrid MOF composite in extraction of f-block elements: Experimental and computational investigation

An attempt was made to understand the sorption behaviour of UO22+, Th4+ and Eu3+ on novel hybrid metal-organic framework composites, FeBDC@CoBDC. The XRD pattern revealed the composite nature of the hybrid MOF materials, while FTIR and Raman spectroscopic analyses evidenced the presence of different functional moieties. The thermal stability of the hybrid MOF composites was investigated through thermogravimetric analysis. The sorption predominantly followed Langmuir isotherm with sorption capacity of 189 mg g−1, 224 mg g−1 and 205 mg g−1 for UO22+, Th4+ and Eu3+ respectively. The sorption proceeded through chemisorption following pseudo 2nd order rate kinetics. The processes were found to be thermodynamically favourable and endothermic in nature. However, they were entropically driven. Multiple contacts of complexing agents were necessary for quantitative elution of f-elements from loaded MOF. The MOF showed moderate stability towards radiation exposure. DFT calculation was used for the optimization of structures, estimation of bond length and estimation of binding energy. In hybrid MOF composites, the Fe atom was having six coordination with 4 O atoms of BDC moieties and 2 O atoms of –OH groups. The O atoms of BDC and –OH groups were coordinated to Eu, Th and U atoms during their sorption.

A novel granular MOF composite with dense and ordered MIL-100(Fe) nanoparticles grown on porous alumina: Green synthesis and enhanced adsorption of tetracycline hydrochloride

Powdery MOF adsorbents have great application potential in the field of water treatment, though the engineering of powdery MOF used in practical applications has so far been a major barrier. Here, a green and facile technology without the addition of surfactant or binder was developed to prepare the MOF composites in granular form. Characterizations suggest that MOF nanocrystals were densely and orderly distributed on the commercially available activated Al2O3. The pre-mixing of metal precursor of MOF with activated Al2O3 was shown to be essential, which provided abundant nucleation sites for the self-assembly growth of MOF crystals on the activated Al2O3 support. The granular composites with low MOF loading (ca. 3 wt%) displayed better adsorption efficiency (95%) for tetracycline hydrochloride within 60 min compared with the activated Al2O3 (51%) and MIL-100(Fe) (where MIL — Materials of Institute Lavoisier) powder alone (72%). Results show that the composites had wide pH applicability (4 ~ 10) and were insignificantly influenced by the presence of certain inorganic ions, except for carbonate, and fulvic acid in solution. Moreover, the composites possessed easy operability, excellent recyclability and good regenerability by photolysis. It was the synergistic interactions between the MIL-100(Fe) layer and activated Al2O3 support that led to the superior adsorptive performance of granular MOF composites. MIL-68(Al) loaded on activated Al2O3 was also successfully realized, evidencing the effectiveness of the newly developed synthesis route. This work presented an economical and valuable way for the preparation of MOF composites in granular form with unique properties, which are very promising for the industrial application.

Fabrication of new MIL-53(Fe)@TiO2 visible-light responsive adsorptive photocatalysts for efficient elimination of tetracycline

Novel semiconductor–MOFs composites based on TiO2 and MIL-53(Fe) were constructed using a facile one-pot solvothermal process and acted as effective visible-light responsive adsorptive photocatalysts for the removal of tetracycline (TC). The resultant MIL-53(Fe)@TiO2 composites were characterized by comprehensive analyses, ESR, and photoelectrochemical measurements. Experimental results showed that the synthesized MIL-53(Fe)@TiO2 composites possessed enhanced adsorption and excellent photocatalytic activity for TC solution under visible light irradiation. Among all the composites, the MIL-53(Fe)@TiO2 = 1:2 exhibited optimal removal performance compared with pristine MIL-53(Fe) and TiO2. The results of UV–vis DRS verified the visible light absorption range of the prepared composite was improved, and the results of the Nyquist plot illustrated that the transfer ability of photo-generated charge carriers was boosted. More importantly, the ESR results showed that the •O2− and •OH active species played a crucial role in photocatalytic reactions. The enhanced photocatalytic ability was due to not only the fabrication of the n-n type heterojunction photocatalysts, which could provide more active species, but also the synergy between MIL-53(Fe) and TiO2 in the composites. A possible reaction mechanism was proposed to elucidate the reason for the photocatalytic performance enhancement. Our findings may open up a new field for Fe-MOF and semiconductor composite materials in removing TC in visible light.

Research status and prospect of MOF composites in the field of electrochemical sensing

There are approximately 18 million cancer cases have been observed per year worldwide according to Global cancer therapy (GLOBOCAN). Chemotherapy, radiotherapy and surgery have been mostly used for cancer therapy.

Enhanced adsorption removal of methyl orange from water by porous bimetallic Ni/Co MOF composite: a systematic study of adsorption kinetics

ABSTRACT Zeolitic imidazole frameworks (ZIFs) and their derivatives, being an emergent category of adsorbents, are anticipated to adsorb organic dyes from aqueous mediums. Herein, ZIF-67 and Ni-doped ZIF-67 were designated due to their high stability in aqueous mediums, porosity and straightforward synthesis. Porous Ni-doped ZIF-67 nanocomposite was produced by doping secondary metal (Ni) to ZIF-67. The fabricated Ni@ZIF-67 showed excellent adsorption efficiency to adsorb methyl orange from water. The performance of Ni-doped ZIF-67 was analysed by varying pH, contact time with adsorbent and concentration of dye. Results exposed that the Ni@ZIF-67 nanocomposite adsorbs more dye in mild acidic condition (qe = 24.24 mg. g−1 pH = 6) as compared to acidic (qe = 17.69 mg. g−1 pH = 2) and basic medium (qe = 15.74 mg. g−1 pH = 10). Langmuir, Freundlich and Dubinin-Radushkevich adsorption isotherm models were applied and results showed that Langmuir model proved to be best fitted, suggesting adsorption process as monolayer. The maximum adsorption capacity attained was 151.74 mg. g−1 with excellent recycling performance up to fifth cycle. Also with 180 min contact time, 68.5 and 82.9% of MO were adsorbed by ZIF-67 and Ni-doped ZIF-67 nanocomposite, respectively. Consequently, the as-synthesised Ni@ZIF-67 could be a prospective adsorbent material for methyl orange elimination from polluted water.

Boron nitride nanosheets decorated MIL-53(Fe) for efficient synergistic ibuprofen photocatalytic degradation by persulfate activation

In this study, based on one-step hydrothermal method, boron nitride nanosheets (BNNs) and MIL-53(Fe) composites (BNFe-X) were successfully prepared and the catalytic performance of BNFe-X on persulfate (PS) activation for ibuprofen (IBP) photodegradation was investigated. The introduction of BNNs changed the morphology of MIL-53(Fe) to be a unique prism-like structure and enhanced the degradation efficiency of IBP, which followed the pseudo-first-order rate kinetics. Among the prepared composites, BNFe-3 (3% BNNs) exhibited the highest IBP degradation activity and possessed strong stability after four cycles. Over 99% IBP removal was achieved at the irradiation time of 60 min. The promoted decomposition rate of IBP could be ascribed to be the activation of PS and the enhanced electrons transfer efficiency between BNNs and MIL-53(Fe). The scavenger studies and electron spin-resonance spectroscopy (ESR) demonstrated the generation of SO2-, OH and O2-, and all these radicals had the different contributions in IBP degradation. Based on the LC-MS-MS and TOC results, the possible decomposition pathways of IBP in BNFe-3/PS system were proposed. This work suggested that the BNNs/Fe-based MOFs composites and PS system had great potential in organic pollutants degradation in aqueous solution.