Journal of Environmental Sciences
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2021
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IF 5.565
Jiaqi Shi,Rui Han,Shuangchun Lu,Qingling Liu
A series of highly-hydrophobic MIL-53-Al (MIL = Materials of Institut Lavoisier) frameworks synthesized via decoration of the Al-OH groups by alkyl phosphonic acid were developed as adsorbents for removing acetone from humid gas streams. The newly prepared materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), N 2 adsorption-desorption and thermogravimetric analysis (TGA). Their adsorption behaviors toward acetone vapor under dry and wet conditions were studied subsequently. Results showed that alkyl phosphonic acid was successfully grafted into MIL-53-Al skeleton through coordinating interaction with Al 3+ generating MIL-53-Al@C x ( x = 12, 14, 18). The MIL-53-Al@C x exhibited similar crystal structure and thermal stability to parent MIL-53-Al. Furthermore, the modified materials showed significantly enhanced hydrophobicity . The water vapor uptake of MIL-53-Al@C 14 decreased by 72.55% at 75% relative humidity (RH). Dynamic adsorption experiments demonstrated that water vapor had almost no effect on the acetone adsorption performance of MIL-53-Al@C 14 . Under the condition of 90% RH, the acetone adsorption capacity of MIL-53-Al@C 14 was 102.98% higher than that of MIL-53-Al. Notably, MIL-53-Al@C 14 presented excellent adsorption reversibility and regeneration performance in 10 adsorption-desorption cycles. Taken together, the strategy of metal-OH group modification is an attractive way to improve the acetone adsorption performance over metal-organic frameworks (MOFs) under humid conditions. Besides, MIL-53-Al@C 14 would be deemed as a promising candidate for capturing acetone in high moisture environment.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Yingying Du,Qing Liu,Yong Zhao,Gangbing Zhu,Zongmian Zhang,Yinhui Yi
Tetracycline (TC) is an effective antibiotic that is extensively used. However, incomplete use of TC would leave residues in various environmental substrates, and excessive accumulation of TC can cause permanent damage to organisms and human health. Consequently, it is crucial to develop a fast and simple TC detection technique. In this work, a hydrothermal approach was used to create an amino functionalized bimetallic organic framework of iron and nickel (MIL(Fe 3 Ni)-88B) for homogeneous electrochemical (HEC) and colorimetric detection of TC. The synergistic effects of Ni and Fe enhance the redox capacity of MIL(Fe 3 Ni)-88B, and the amino group on its surface can bind with TC through a hydrogen-bonding interaction, which causes the electronic interactions and further enhance the peroxidase-like (POD-like) activity of MIL(Fe 3 Ni)-88B. Thus, with H 2 O 2 and o-phenylenediamine (OPD) as reaction substrate, the Fenton reaction is enhanced by the transfer of the electron between TC and MIL(Fe 3 Ni)-88B, enabling HEC detection of TC. Meanwhile, OPD could be oxidized to yellow 2,3-diaminophenylazine (DAP) under the catalysis reaction, providing feasibility for colorimetric detection of TC. The constructed dual-model analysis of TC achieves a wide linear range of 0.01 ∼ 10.0 μM for HEC detection and 0.25 ∼ 25.0 μM for colorimetric method, respectively, coupled with the low detection limits of 0.003 and 0.086 μM. Additionally, due to the unique structure of MIL(Fe 3 Ni)-88B, it can be used for highly effective detection of TC in water samples, and the detection of TC in real water samples based on the dual-model strategy has high recoveries between 97.04 % and 103.76 %.
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Water
·
2025
·Vol. 17
·期 9
·1309
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IF 3
Xiaoyan Ma,Rongbin Quan,Wenqing Cao,Weijie Zhang,Su Jiang,Jiao Feng,Jiulong Wang,Stefanos Giannakis
Electrochemical reduction is a promising strategy for the dechlorination of halogenated organic compounds, offering advantages such as enhanced electron transfer efficiency and increased hydrogen atom concentration. It has garnered significant attention for application in mitigating halogenated disinfection by-products (DBPs) in drinking water, owing to its high efficiency and simple operation. In this study, trichloroacetic acid (TCAA), a representative DBP, was selected as the target contaminant. A novel composite cathode comprising a metal–organic framework MIL-53(Fe)@C supported on an Nd magnet (MIL-53(Fe)@C-MAG) and its dechlorination performance for TCAA were systematically investigated. The innovative aspect of this study is the magnetic attachment of the MOF catalyst to the carbonized cathode surface treated through carbonization, which fundamentally differs from conventional solvent-based adhesion methods. Compared to the bare electrode, the MIL-53(Fe)@C-MAG achieved a TCAA removal efficiency exceeding 96.03% within 8 h of contact time. The structural characterization revealed that the α-Fe0crystalline phase serves as the primary active center within the MIL-53(Fe)@C catalyst, facilitating efficient electron transfer and TCAA degradation. The scavenger experiments revealed that TCAA reduction involves a dual pathway: direct electron transfer and atomic hydrogen generation. The modified MIL-53(Fe)@C-MAG electrode exhibited robust electrolytic performance over a broad pH range of 3–7, with TCAA removal efficiency showing a positive correlation with current density within the range of 10–50 mA/cm2. Furthermore, the electrode maintained exceptional stability, retaining more than 90% removal efficiency after five consecutive operational cycles. The versatility of the system was further validated by the rapid and efficient dechlorination of various chlorinated DBPs, demonstrating the broad applicability of the electrode. The innovative magnetic composite electrode demonstrates a significant advancement in electrochemical dechlorination technology, offering a reliable and efficient solution for the purification of drinking water contaminated with diverse halogenated DBPs. These results provide valuable insights into the development of electrolysis for dechlorination in water treatment applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Tianyang Zhao,Chengbo Jia,Haoran Sun,Run Li,Zezhou Zhang,Yu Wang,Jialin Guo,Feng Tian,Chunfeng Song
The mixed matrix membrane (MMM) can combine the advantages of organic matrix and inorganic fillers, but it has the problem of limited compatibility between the fillers and the matrix. In this work, we constructed a metal-organic framework material (MOF) with a functional shell. Through the induced grafting effect of surfactants, a layer of zeolite imidazolate framework structure material (ZIF-8) was formed on the chromium-based metal-organic framework material (MIL-101(Cr)). Utilizing the microporous structure of the shell ZIF-8 and the micropore-mesopore structure of the core MIL-101(Cr), a “separation-diffusion” gas mass transfer pathway was formed within the membrane, effectively enhancing the CO 2 separation and purification performance of the membrane. Then, the MIL@ZIF filler was incorporated into the cross-linked PEO polymer matrix to obtain the XLPEO/MIL@ZIF membrane. It was demonstrated that the MIL@ZIF core-shell filler has a more excellent ability to enhance the gas separation performance of the membrane compared to the single MIL-101(Cr) and ZIF fillers. Under the optimal loading condition, the XLPEO/MIL@ZIF membrane achieves a CO 2 permeability of 328 Barrer and a CO 2 /N 2 selectivity of 93.1, which are 83.2 % and 72.1 % higher than the pure membrane, surpassing the upper limit (2019). This filler preparation strategy and MMM preparation method provide a promising direction for subsequent related research.
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Molecular Catalysis
·
2025
·
IF 4.9
Xuetong Liu,Chi Zhang,Nuoyan Li,Runfeng Li,Songlin Lei,Wei Hong,Shuguang Deng,Jun Wang
Herein, a novel and flexible self-supporting gas diffusion electrode (GDE) was fabricated, which including an electrodeposited Bi nanocomposite as a catalyst layer and MIL-101 derived porous carbon in the gas diffusion layer (GDL). Compared with the conventional fabrication of GDE electrodes, the electrodeposition approach can avoid the tedious drop-casting processes of the catalyst layer (CL). The in situ growth mode by electrodeposition can also ensure the firmly interaction between CL and current collector, thus enhancing the stability of the electrode. Meanwhile, the porous carbon derived from MIL-101 which with a high specific area is conducive for the CO 2 enrichment on the electrode, thus facilitate the reaction with high current density. Owe to the special structure, the resultant catalyst showed excellent performance for electrocatalytic CO 2 reduction reaction (CO 2 RR) with enhanced formic acid generation. Notably, at -1.37 V ( vs. RHE), a large current density of 400 mA cm -2 and a high formate Faraday efficiency (FE formate ) of 96.5 % were achieved, and the yield of formic acid reached 46.5 mmol cm -2 h -1 , which is superior to most electrocatalytic catalysts for CO 2 RR. In addition, the FE formate value remained high (>90 %) over a wide voltage window of 800 mV, and the catalyst also maintained stable operation at industrial current density for 70 h. This work provides a new strategy for the design of GDEs with novel structure to achieve high activity and durability for different electrocatalysis.
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ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Jiabi Xu,Yanyan Xing,Yutong Liu,Mingzhe Liu,Xiaohong Hou
In recent decades, artificial nanozymes with excellent stability, low cost and availability have been gradually explored to avoid the limits of natural enzymes such as poor stability, high cost and difficult preparation. Herein, for the first time, we investigated the capability of nanoscale Fe 3 O 4 @MIL-100(Fe) as a nanozyme, which was quickly synthesized in situ by a microwave-assisted method within 20 min using Fe 3 O 4 as the metal precursor. The obtained Fe 3 O 4 @MIL-100(Fe) showed satisfactory intrinsic dual enzyme mimetic activities, including peroxidase (POD)- and catalase (CAT)-like activities. Moreover, a simple and effective colorimetric biosensor was fabricated to detect glutathione (GSH) based on its POD-like activity. The proposed measurement had a linear range of 1–45 μM and a limit of detection (LOD) of 0.26 μM (3.3 δ/S). It was proved that the established colorimetric sensing system could be successfully applied to detect GSH in actual biological samples. Importantly, the outstanding reusability and stability made it extremely valuable as a catalyst. The present work implied that Fe 3 O 4 @MIL-100(Fe) synthesized in situ by the microwave-assisted method was a very promising candidate for biocatalyst and biosensing.
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Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Lihua Qi,Hailin Jiang,Tianni Lin,Xinyu Chang,Bolong Jiang
Background The aim of this study was to develop a class of novel MIL-53(Al) based composite with high phenolic compound adsorption capacity to treat highly toxic phenolic wastewater. Method MIL-53(Al)@AC-x composites with different AC loading ( x ) were constructed by combining MIL-53(Al) with cheap biomass AC derived from cheap rice husk. The adsorbents were characterized by various methods. Significant findings The results showed that the surface area and pore volume of all MIL-53(Al)@AC-x composites increased remarkably, which are much higher than those of pristine AC and MIL-53(Al). The p-nitrophenol adsorption rate of MIL-53(Al)@AC-10 was higher than pristine MIL-53(Al) by 36%. The adsorption performance decreased in the order of MIL-53(Al)@AC-10 > MIL-53(Al)@AC-15 > MIL-53(Al)@AC-5 > MIL-53(Al). The maximum adsorption capacity for p-nitrophenol of MIL-53(Al)@AC-10 reached 250 mg.g −1 , which are higher than the data reported in most literature. The fabrication of AC into MIL-53(Al) is a promising method to obtain a composite with high adsorption capacity and stability. The adsorption kinetics and isotherms fitted well with pseudo-second-order model and Langmiur model. The adsorption is mainly through the π-π and hydrogen bond interactions, and hydrophobic effect.
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Sustainable Materials and Technologies
·
2025
·
IF 9.2
Xianjin Qi,Guizhi Yan,Boyu Du,Mengmeng Wang,Yongkui Li
Arsenic (As) contamination is a global problem that requires innovative remediation, this study successfully synthesized a novel MnFe 2 O 4 -Zn/Co ZIFs@MIL-53(Fe) (MFZM) using a solvent method to remove As(V) from contaminated water. The MFZM exhibited a rhomboidal dodecahedron structure with a high specific surface area of 158.93 m 2 /g, which contributed to its exceptional adsorption performance under both acidic and neutral pH conditions. Notably, the adsorption capacity for As(V) reached approximately 599.90 mg/g at an equilibrium concentration of 500 mg/L, surpassing the performance of several previously reported adsorbents. The kinetic modelling results indicated that the adsorption process followed a pseudo-second-order mechanism, suggesting chemisorption as the dominant process. However, the isotherm studies demonstrate favorable single-layer adsorption, with the Langmuir model providing the best fit for the experimental data. The X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) analysis revealed that the Fe/Mn/Co on the MFZM surface can hydrolyze and generate Fe/Mn/Co-OH groups under pH conditions ranging from 3 to 7, facilitating the formation of stable coordination complexes with As(V). Furthermore, the MFZM provided abundant positively charged adsorption sites that effectively attracted HAsO 4 2− via electrostatic interactions, leading to efficient As(V) removal. These findings underscore the potential of the MFZM as a promising adsorbent for the effective remediation of As-contaminated wastewater, supporting sustainable environmental management.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 7.7
Yan Jiang,Yuying Xin,Hui Zhao,Xianfa Zhang,Ping Wang,Rui Gao,Yingming Xu,Shan Gao,Xiaoli Cheng,Lihua Huo
The reasonable design and preparation of high-performance sensing materials for detecting NO 2 is of importance to environmental conservation and public health. Herein, porous Zn-doped In 2 O 3 microtubes were fabricated by simple Zn(NO 3 ) 2 solution etching of In-MOF microrods, followed by calcination at 500 ℃ in air. The experiment has confirmed that appropriate amount of Zn introduced into In 2 O 3 can optimize electronic structure, increase the number of oxygen vacancy and efficiently improve NO 2 sensing property. In particular, compared with pristine In 2 O 3 , Zn-In 2 O 3 sensor exhibits excellent selectivity, high response, fast recovery speed (32 s) and lower limit of detection (LOD, 20 ppb) at room temperature. Meanwhile, the Zn-In 2 O 3 sensor also presents outstanding reproducibility, stability and humidity resistance. The excellent gas sensing property is traced to the construction of the hollow and porous structure and the synergistic optimization of Zn doping. This endeavor yields a simple strategy for the design of high-property gas sensing materials.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Qi Chen,Zefeng Yang,Yueling Chen,Jionghua Wu,Jimmy C. Yu,Ling Wu
The fabrication of single atoms on MIL-125(Ti) for photocatalytic ammonia synthesis. • SAs modulate the local electronic structure for charge mobility and separated active site. • The favorable N 2 activation and protons supply optimizes the reduction kinetics. • Magnetic field-induced spin flipping to charge utilization further boost the activity. Photocatalytic nitrogen fixation is an attractive alternative to the energy-intensive traditional ammonia synthesis. However, the major challenge is that most photocatalysts are limited by their low charge mobility, insufficient molecules activation and sluggish reaction kinetics. Herein, we integrated single atoms (Co, Fe, Ni) on MIL-125(Ti) functionalized with sulfhydryl (MIL-125(SH) 2 , MTS) to afford Co-MTS, Fe-MTS and Ni-MTS for photocatalytic nitrogen reduction. Through uniformly dispersed SAs (single atoms) coordinated with O and S atom, such intimate interaction and charge redistribution can efficiently regulate the unsaturated Ti sites for N 2 adsorption and activation. Moreover, the introduced SAs species also serve as separated active center for water oxidation to promote H 2 O adsorption and protons release, kinetically optimizing protons supply and energy barrier of rate rate-determining step for N 2 hydrogeneration. Benefited from the spatially separated metal node-SAs dual sites and favorable reaction energy barrier, the optimized Ni-MTS sample shows an ammonia yield rate of 72.6 μmol·g −1 ·h −1 with an apparent quantum efficiency of 0.49% at 400 nm. This can be further enhanced by magnetic field-induced spin flipping contributed to charge utilization. This work would inspire the development of other high-efficiency single atom/MOFs that combining molecular activation and protons supply for photocatalysis.
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ACS Materials Au
·
2026
·
IF 9.1
Yuhan Li,Zhuoyang Du,Yongheng Shi,Zeqing Liu,Lingmei Dai,Dehua Liu,Wei Du
Enzyme immobilization on solid supports enhances stability and reusability, yet nanoscale carriers such as metal–organic frameworks (MOFs) still face challenges in efficient recovery. While pyrolysis can magnetize Fe-MOFs, conventional methods often compromise either enzyme activity or structural integrity. This study presents a rational two-step oxidation–reduction (O–R) pyrolysis strategy to convert Meso-MIL-88A into a magnetically recyclable, mesoporous biocatalyst support (O-R500). Unlike one-step carbonization, which generates enzyme-incompatible Fe3O4, or carbonization-oxidation routes that collapse the framework, our approach first transforms the MOF into a robust α-Fe2O3 template while preserving its morphology. Citric acid then acts as a mild, slow-releasing reductant, selectively producing a γ-Fe2O3-rich phase without damaging the mesostructure. The resulting O-R500 exhibits well-defined mesopores (∼13 nm), sufficient magnetization (16 emu/g) for rapid separation, and a biocompatible surface that maintains the native conformation of immobilized Candida antarctica lipase B (CalB). In the synthesis of phosphatidyl EPA/DHA, CalB@O-R500 achieved 84.5% incorporation and retained 90.3% activity over five cycles, outperforming nonmagnetic counterparts. This work not only provides a high-performance magnetic biocatalyst but also establishes a generalizable design principle for converting Fe-MOFs into structured, biocompatible, and functionally integrated carriers.
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PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Xueyun Wei,Lanrui Yang,Zhuomin Zhang,Gongke Li
Trace disinfection by-products (DBPs) in aquatic products may have serious impact on human health via direct or indirect consumption. However, the accurate and sensitive quantification of trace chlorophenol DBPs in complex aquatic products still remains a great challenge. In this work, the defective MIL-101(Fe)-NH 2 enrichment medium was prepared for developing a selective membrane solid phase extraction (M-SPE) technology for quantifying trace chlorophenol DBPs in fish, coupled with high performance liquid chromatography-ultraviolet-visible spectroscopy (HPLC-UV). The established analytical method showed good selectivity, sensitivity and accuracy, achieving the limits of detection from 0.03 to 0.15 ng/mL and the recovery from 80.0% to 117%, achieving sensitivity comparable to that of HPLC-mass spectrometry (MS)-based methods. The validated method was successfully applied to quantify chlorophenol DBPs in grass carp and crucian carp, offering a selective and sensitive alternative for monitoring chlorophenol DBPs in fish, with practical advantages for routine analysis via compatibility with widely available HPLC-UV.
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PubMed
高影响因子
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