Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 22
·4555-4566
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IF 6.331
Wenhui Chen,Qiu Han,Yang Liu,Yiwen Wang,Fu Liu
Hyperphosphatemia, a common complication of chronic renal failure patients, is described as an excess amount of serum phosphate >4.5 mg dL−1. Current therapy for hyperphosphatemia is limited by low removal efficiency, secondary hyperparathyroidism, uremic bone disease, and the promotion of vascular and visceral calcifications. Metal organic frameworks (MOFs) have aroused great interest in the field of blood purification because of their strong specific adsorption. Herein, we prepared mixed matrix microspheres (MMMs) encapsulated NH2-MIL-101(Fe) with specific adsorption to blood phosphate. Simultaneously, a heparinoid copolymer poly (acrylic acid-sodium 4-vinylbenzenssulfonate) (P(AA-SSNa)) was incorporated to improve the hemocompatibility. The proposed MMMs exhibited excellent phosphate adsorption capacity both in aqueous and human plasma environments. They also showed comprehensive hemocompatibility e.g. low tendency of protein adsorption, low hemolysis rate and extended blood coagulation time. In general, we envision that the MMMs are potentially suitable as highly efficient hemoperfusion adsorbents for hyperphosphatemia treatment.
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NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 6
·3120-3127
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IF 3.591
Yixuan Huang,Liyan Xie,Kangji Zhuo,Hao Zhou,Yanhui Zhang
MIL-101(Fe)-based composite materials and their application for the generation of H2 by the catalytic reduction of nitro organics are reported in this study. NaBH4 and water contribute hydrogen for the catalytic reduction of nitro organics, but the possibility of nitro organics as a potential hydrogen source is often overlooked due to the simplicity of the reaction. However, experiments have revealed that the reaction process is accompanied by the production of H2, which is affected by the concentration of nitro organics. Moreover, the reaction is more conducive to the generation of H2 compared to NaBH4 hydrolysis under the same conditions. Unlike specially catalyzing the expensive NaBH4 hydrolysis, hydrogen is a by-product of the reduction of pollutants by inexpensive catalysts (NaBH4 acted as an electron donor for the catalyst). Accordingly, the reaction mechanism of p-nitrophenol hydride reduction was optimized. This work provides a new perspective on the application of this reaction.
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JOURNAL OF CLUSTER SCIENCE
·
2023
·Vol. 34
·期 6
·3095-3103
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IF 2.8
Liu Xiangyi,Zheng Qianye,Jia Deqi,Wang Wenwen,Zhao Hong,Tao Xiansen,Sha Jingquan
To explore novel nanozymes as colorimetric biosensors with highly activities, the ternary MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite was successfully fabricated based on the optimal matching principle, namely, Wells–Dawson-type polyoxometalates (POMs, H 6 P 2 W 18 O 62 abbreviated as P 2 W 18 ) were encapsulated in a custom MIL-101(Fe) cavity, and single-walled carbon nanotubes (SWNT) was then fixed. The peroxidase-like activities of MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite were evaluated by detecting hydrogen peroxide (H 2 O 2 ) and glucose (GLC). Compared with the MIL-101(Fe), P 2 W 18 and SWNT, the MIL-101(Fe)@P 2 W 18 @SWNT exhibits better peroxidase-like properties and stability due to the nature of all components and their optimal synergy. Based on the excellent catalytic activity of MIL-101(Fe)@P 2 W 18 @SWNT , two colorimetric biosensors for detecting H 2 O 2 and GLC with linear ranges of 0–80 μM (H 2 O 2 ) and 0–150 μM (GLC) were constructed, and the low detection limit of 0.3 μM for H 2 O 2 and 0.2 μM for GLC are superior to the most reported nanozymes. The work opens a promising route in constructing heterogeneous MOFs and POMs-based nanozymes for biosensing application.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Dongmei Jia,Yuejin Li,Huamin Cai,Yongzheng Duan,Jing Li,Chen Ling
Capture of heavy metal ions from aqueous solutions is a critical but challenging step in environmental treatment. In this work, NH2-MIL-101(Fe) nanoparticles were synthesized by simple solvothermal methods and applied to capture Cr(VI) anions from aqueous solutions. The results revealed that NH2-MIL-101(Fe) exhibited a high capture capacity (375.2 mg g–1) and an ultrafast capture rate (4 min reaching equilibrium). The competitive effects of coexisting ions such as Cl–, HCO3–, PO43–, Cd2+, Ca2+, and Cu2+ on Cr(VI) are very weak, suggesting that the adsorption selectivity significantly enhanced by loading amino groups on MIL-101(Fe). Density functional theory (DFT) calculation was performed to better understand the adsorption mechanism of Cr(VI), showing that the amino groups could increase the adsorption energy of Cr(VI) for enhancing the adsorption capacity. Based on powder X-ray diffraction, X-ray photoelectron spectroscopy, and DFT calculations, the Cr(VI) capture mechanism by NH2-MIL-101(Fe) nanoparticles was a combination of coordination between Fe and Cr(VI), electrostatic interaction between Cr2O72– and the protonated amino group, and reduction of Cr(VI) to Cr(III).
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Hao Wang,Renting Huang,Wei Mao,Hao Xu,Chutong Ling,Junru Zhao,Fan Yi,Yongxin Zhou,Jinghong Zhou
Iron-based metal-organic frameworks (MOFs) represent a potentially important tool for controlling organic pollutants . However, the structural stability of most iron-based MOFs in the aqueous environment is limited. Therefore, this study sought to improve the aqueous stability and photocatalytic activity of MIL-101(Fe) using an in-situ modification strategy. A novel and highly water-stable MIL-101(Fe)@IPA 4 was prepared using ligand regulation. Owing to the in-situ modification effect, MIL-101(Fe)@IPA 4 exhibited remarkable hydrophobicity with a water contact angle at 102.4° while maintaining minimal leaching of iron ions (0.46 mg/L), even after five cycles of photocatalysis . Under MIL-101(Fe)@IPA 4 /UV/H 2 O 2 conditions, the removal rates of ciprofloxacin and total organic carbon reached 100% and 49.16%, respectively, within 60 min. These researches suggest that introducing IPA improves the light absorption properties of MIL-101(Fe)@IPA 4 and facilitates electron-hole separation, thereby promoting the generation of active species. The ecotoxicity assessment of major degradation intermediates of ciprofloxacin was conducted using the ECOSAR system. Our findings provide novel insights for enhancing the water stability of iron-based MOFs through an in-situ modification strategy, which is crucial for pollution control efforts.
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JOURNAL OF NANOPARTICLE RESEARCH
·
2024
·Vol. 26
·期 9
·1-15
·
IF 2.1
Yin Yanbing,Zhang Xueli,Jiang Bei,Wang Zhou,Feng Yongming,Li Xueying
Developing efficient catalysts for visible light reactions is vital in the field of photocatalysis. This study focuses on the synthesis of novel ternary composites (α-DMACoPc/TiO 2 /MIL-101 (Fe)) by leveraging the excellent adsorption properties of MIL-101 (Fe), the photosensitizing capabilities of phthalocyanine, and the photocatalytic potential of TiO 2 . The nanocomposites’ structural and optical attributes were thoroughly analyzed. X-ray powder diffraction (XRD) was utilized to showcase the crystalline nature of the composites. Furthermore, Fourier transform infrared (FT-IR) studies confirmed the formation of ternary nanocomposites. Optical absorption investigations demonstrated the tuning of the optical band gap from the UV to the visible range. The results indicated that nearly 94% of the organic material was decomposed after 150 min of exposure to simulated sunlight from a xenon lamp. This high efficiency can be attributed to the synergistic interaction among the composites, enhancing light absorption. The composite’s robust stability was evidenced through cyclic tests. Valuable information was provided to advance the design and synthesis of photocatalysts consisting of metal–organic frameworks synergized with semiconductors. Exploring the possibility of mesoporous materials was based on MOFs for photodegradation of organic pollutants. The photocatalytic degradation of organic pollutants by MOFs mesoporous materials was also investigated. The potential of composite materials in the field of dye degradation of industrial waste is confirmed. The good recycling photocatalytic reusability indicates the promising application of this photocatalyst. Graphical Abstract
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MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Ziwei Chen,JinChang Zhao,Qing Li,Rufen Chen,HuiJiao Zhang,Hui Zhao,Kezhong Wu
The synergistic coupling of different metal species endows mixed transition metal oxides (MTMOs) as electrode materials for supercapacitors with multiple redox reaction pathways and enhances the electronic conductivity. In this study, three MoO 2 @FeMoO 4 electrode materials were derived from the precursor PMo 12 @MIL-101(Fe) by pyrolysis at 600 °C, 700 °C, and 800 °C under an O 2 atmosphere. The precursor was composed of polyoxomolybdate (H 3 PMo 12 O 40 , PMo 12 ) and Fe-based metal-organic frameworks (MOFs) MIL-101(Fe). The structural characteristics of the three obtained MoO 2 @FeMoO 4 composites were characterized by XRD, XPS, SEM, and N 2 adsorption measurement. Then, the effects of the pyrolysis preparation temperature for the MoO 2 @FeMoO 4 composites on the energy storage performance of the supercapacitor electrode were evaluated by cyclic voltammetry (CV) and galvanostatic charge/discharge tests. Among three electrodes, the specific capacitance of 339.6 F g −1 of the obtained MoO 2 @FeMoO 4 (700 °C) electrode was the highest compared to 291.2 F g −1 of MoO 2 @FeMoO 4 (600 °C) and 209.7 F g −1 of MoO 2 @FeMoO 4 (800 °C) at a current density of 0.5 A g −1 in 1.0 M NaOH electrolyte. As a result, the different pyrolysis preparation temperatures can alter the atomic microelectronic state and geometric configuration of the MoO 2 @FeMoO 4 , which can construct a high-density Fe–Mo bimetallic multicatalytic active site, thus affecting the activity of the composites. The excellent pseudo-supercapacitance response of the MoO 2 @FeMoO 4 (700 °C) electrode can be ascribed to its larger S BET and greater number of voids, which can generate more Fe–Mo bimetallic active sites and facilitate the electrolyte diffusion, indicating high energy conversion efficiency for potential application in supercapacitors.
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Frontiers in Chemistry
·
2021
·
IF 5.221
Zhang Hui,Zhou Liang,Li Jing,Rong Sijia,Jiang Jianping,Liu Shengquan
Herein, we report a novel carboxymethyl cellulose (CMC)/MIL-101 (Fe)/poly(β-cyclodextrin) (β-CDP) hydrogel with high photocatalytic activity. β-CDP can significantly enhance the photoactivity of MIL-101(Fe) in the hydrogel prepared by a simple solvothermal method. The structure and property of this composite hydrogel were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Tetracycline was selected as a model pharmaceutical antibiotic to evaluate the photocatalytic activity of the composite hydrogel under visible light irradiation and darkness, respectively. This composite hydrogel shows excellent activity for degrading pharmaceutical antibiotics under visible light irradiation. The increased photocatalytic activity can be attributed to β-CDP, which acts as a promoter and affords an efficient separation of photogenerated electron-hole pairs of MIL-101(Fe). Moreover, the composite hydrogel is shown to have good water retainability. The hydrogel is inexpensive and shows high photocatalytic activity. Hence, it can be used as an efficient photocatalytic material.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 19
·1512
·
IF 3.2
Jiang Chaojin,Zhang Yuanyuan,Guan Erbu,Jiang Yuqin,Li Shuaishuai,Xin Yanmei
The development of efficient and economical photocatalysts is the focus of achieving sustainable remediation of water pollution. However, slow photogenerated carrier transfer and insufficient catalytic sites are the main reasons affecting photocatalytic applications. Herein, we developed flake-octahedral BiOBr/MIL-101(Fe) heterojunction catalysts through a facile solvothermal strategy for the degradation of pollutants under visible light irradiation. Scanning electron microscope, X-ray photoelectron spectrometer, Fourier infrared spectrometer, and X-ray diffraction analysis characterizations proved the successful synthesis of flake-octahedral BiOBr/MIL-101(Fe) heterojunction. Absorption spectra and Brunauer–Emmett–Teller analyses showed that the BiOBr/MIL-101(Fe) composites with an atomic percentage of Fe of 9.1 (denoted as BiOBr/MIL III ) had the optimal light absorption and the largest specific surface area. The BiOBr/MIL III achieved a remarkable Rhodamine B (Rh B) degradation efficiency of 94.5% within 60 min, with an apparent rate constant ( k ) of 0.03540 min −1 , demonstrating excellent visible light-driven photocatalytic activity. Photocatalytic mechanistic studies showed that the solvothermal-induced flake-octahedral BiOBr/MIL-101(Fe) III heterojunction promotes the formation of Z-scheme, which significantly enhances the carrier separation efficiency and accelerates the rapid generation of reactive radicals · O 2 − and h + . This work provides a feasible strategy for the construction of flake-octahedral inorganic-MIL photocatalysts with excellent photocatalytic performance.
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CHEMOSPHERE
·
2022
·
IF 8.943
Sheng Fan,Xinru Lu,Haoliang Li,Xiaodong Du,Xiaoyu Huang,Yao Ma,Juan Wang,Xueqin Tao,Zhi Dang,Guining Lu
Organophosphate esters (OPEs) are a new class of flame retardants present in diverse waters. The study focused on the removal of aqueous OPEs using functionalized MIL-101(Fe), which was a representative of the metal-organic frameworks (MOFs). Adsorption kinetics of tris(2-chloroethyl) phosphate (TCEP), tributyl phosphate (TnBP), and triphenyl phosphate (TPhP) were investigated. Additionally, TCEP was selected as the model contaminant to study the adsorption isotherms, thermodynamics, and effect of solution matrix properties. Adsorption mechanisms obtained from the experiments were confirmed using density functional theory (DFT) calculations. Adsorption kinetics indicated that functionalized MOFs provided a significant enhancement to the removal of TCEP. The maximum adsorption capacities q m of MIL-101(Fe), MIL-101(Fe)–NH 2 , MIL-101(Fe)–OH, and MIL-101(Fe)–CH 3 at 298 K for TCEP were 76.040, 282.940, 119.680, and 181.274 μmol/g, respectively. By comparing the adsorption behavior of functionalized MOFs, MIL-101(Fe)–NH 2 was proved to be most efficient for TCEP removal . Based on the adsorption experiments and DFT calculations, TCEP removal was dominated by physical adsorption. The van der Waals (vdW) interactions and hydrogen bonding were assumed to be involved in the adsorption. This work proves that appropriate ligand functionalization is promising for the removal of aqueous OPEs, which also provides a new insight for the control of OPEs pollution.
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Environmental Science-Nano
·
2022
·Vol. 9
·期 8
·3081-3093
·
IF 9.473
Yuqi Wan,Huaizhi Yang,Qigao Shang,Qingrong Cheng,Hong Zhou,Zhiquan Pan
A novel metal–organic framework@covalent organic framework (MOF@COF) heterojunction was synthesized based on post-synthetic covalent modification. In the present work, aldehyde-modified MOFs (NH2–MIL-101(Fe)) were covalently bonded with covalent organic frameworks (Schiff base network-1, SNW-1) forming the NH2–MIL-101(Fe)@SNW-1 (MS-x) heterojunction by using this strategy. The MS-x heterojunction showed excellent photodegradation ability for pollutants and photocatalytic hydrogen production under simulated sunlight. The superior photocatalytic performance of the MS-x heterojunction can be attributed to the formation of –CN– bonds between NH2–MIL-101(Fe) and SNW-1, which enhances the charge separation efficiency and improves the stability of the photocatalyst. It is worth mentioning that SNW-1 on the surface of the catalyst had a hollow structure which can promote the photoelectric charge migration. Furthermore, the results verified that the matched band structure of NH2–MIL-101(Fe) and SNW-1 could induce a type II heterojunction, which could well explain the improved photocatalytic performance of the photocatalytic system. This work not only provides a new idea to construct highly efficient and stable MOF@COF heterojunctions but also broadens the applications of COF-based materials.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Zihao Hu,Huiqi Wu,Fang Zhu,Sridhar Komarneni,Jianfeng Ma
MIL-101(Fe)/Co 3 O 4 composites were synthesized using a facile solvothermal method to establish the superiority of a heterogeneous photochemical catalysis system in the presence of Na 2 S 2 O 8 with visible light irradiation. In the present system, the MIL-101(Fe)/Co 3 O 4 catalyst showed better catalytic performance than the single photocatalytic or chemical catalytic system, implying that the MIL-101(Fe)/Co 3 O 4 catalyst can combine both photocatalysis and chemical catalysis well. When tetracycline (TC) is the target pollutant, the highest degradation efficiency can be achieved within 40 min, reaching to 86 %. Crystallinity, morphology, and elemental valence of the MIL-101(Fe)/Co 3 O 4 composite were explored by using X-ray diffraction (XRD), scanning electron microscopy (SEM) as well as X-ray photoelectron spectroscopy (XPS). From the quenching experiments, it was found that 1 O 2 , SO 4 ‾, OH, and O 2 ‾ make contributions to the effective removal of tetracycline. Apart from that, the recovery and reuse characteristics of MIL-101(Fe)/Co 3 O 4 may facilitate the sustainable wastewater treatment.
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