INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Zequn Li,Luogang Wu,Guangcan Huang,Xuetong Cui,Zilong Chen,Qiang Chen,Jian-Rong Li
Mixed matrix membranes (MMMs) incorporating metal–organic frameworks (MOFs) are attractive for molecular recognition and separations, but precisely engineering the MOF filler structure toward maximizing its inherent nanopore separation capability remains challenging. Here, we report a fluorination strategy to functionalize MIL-101 that synergistically optimizes its pore chemical environment and interfacial compatibility with the polymer matrix. Compared with the MIL-101/6FDA-DAM membrane, the incorporation of strong electron-withdrawing fluorinated ligands enhances both the CO2 adsorption affinity of MIL-101 and its hydrogen-bonding interaction with the 6FDA-DAM matrix. The optimized MIL-101-F/6FDA-DAM (10 wt %) membrane achieves a CO2 permeability of 2200 Barrer, a 150% enhancement over the pure 6FDA-DAM membrane, while maintaining a comparable CO2/CH4 selectivity of 21. The excellent separation performance surpasses the 2008 Robeson upper bound. This work provides a simple and effective approach to advancing the gas separation performance of MMMs.
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Food and Bioprocess Technology
·
2026
·Vol. 19
·期 6
·299
·
IF 5.6
Li Huina,Wang Guangxian,Wang Songlei,Xia Hongqiang,Lu Yuzhe,Tian Tian,Luo Yulong,Zheng Hao-Bo
This study describes the development of a biodegradable colorimetric membrane by co-pigmenting Lycium ruthenicum anthocyanins (LRA) with catechins, and loading the stabilised complex onto MIL-88B(Fe) dispersed in a chitosan/polyvinyl alcohol (PVA) matrix. Molecular docking simulations revealed favorable non-covalent interactions, primarily hydrogen bonding and π-π stacking, between the anthocyanin and the MIL-88B framework, particularly in proximity to its iron-based coordination nodes. The LRA complex exhibited the highest binding affinity and conformational stability. Density functional theory (DFT) calculations revealed interfacial electron transfer between the LRA and Fe centers, Bader charge analysis indicated electron transfer, with the Fe center losing ~ 0.927 e upon adsorption, providing a possible electronic-level explanation for the enhanced photothermal stability observed in thermogravimetric analysis (TGA) and color retention tests. The optimized film (containing LRA 3% + MIL-88B) exhibits enhanced tensile strength, increased water contact angle to 89.9°, indicating reduced surface hydrophilicity, and significant antioxidant activity, with ABTS radical scavenging rates exceeding 80%. The films exhibited rapid (< 5 min) pH responsiveness over a wide pH range (pH 2–13), demonstrating the potential to reflect the spoilage of beef, lamb, and shrimp through visible colour changes. Soil burial experiments confirmed that the film degraded by approximately 70% within 30 days. This MOF-assisted strategy significantly improved the inherent instability of anthocyanins and provides a sustainable functionalisation solution for smart food packaging systems.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Li Zhang,Minjie Liang,Chao Li,Jia Jiao,Fengbo Li,Jianjiao Xin,Jing Pan,Ruyan Xie,Haijun Pang,Shaobin Li
A novel PA-MIL-88A composite was designed for detection of phytic acid. • Structural optimization through controllable etching provides a new paradigm for the functionalization of MOF materials. • MIL-88A is water-degradable, and PA is natural plant extract. This strategy follows green analytical chemistry guidelines. • The sensor exhibits low LOD and a wide linear range. • The sensor exhibits excellent practical applicability in fruit juice. Ascorbic acid (AA) may cause adverse reactions when consumed in excess, posing conceivable wellness threats to humans. Consequently, accurate detection of AA content in food is crucial for ensuring food safety and safeguarding human health. This work successfully developed an electrochemical sensor based on phytic acid-etched modified MIL-88A (PA-MIL-88A) for detecting AA in juices. The electrochemical performance of the PA-MIL-88A composite was evaluated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Experimental results indicate that the PA-MIL-88A composite exhibits excellent linearity for AA detection, with a linear range of 10 μM–2640 μM and the limit of detection as low as 2.68 μM. Furthermore, the sensor demonstrated excellent reproducibility, repeatability, and long-term stability. When detecting juice samples, it exhibited significant advantages in recovery rates and relative standard deviation (RSD) values. This work broadens the application of MIL-88A in electrochemical sensing and provides new insights for food detection. Download: Download high-res image (89KB) Download: Download full-size image
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Peng Zhao,Kai Liu,Yueyan Li,Xiaofang Ban,Yuheng Wu,Jiaqi Liu,Xiaohong Wu,Ziyi Cheng,Fan Wang,Shuo Li,Feng Lin,Huifang Tang,Qingnan Zhao
The excessive activation of sympathetic nerve is closely related to cardiovascular diseases (CVDs). In this study, we developed a novel MIL-100(Fe)@Ag surface-enhanced Raman scattering (SERS) substrate for the simultaneous and effective detection of plasma norepinephrine (NE) and adenosine—two pivotal sympathetic hormones. The microscopic morphology and crystal structure of the substrate were characterized using techniques such as transmission electron microscope (TEM) and X-ray diffraction (XRD). Mechanistically, the HOMO-LUMO energy levels of the detection molecules were calculated using Gaussian. The substrate realized a dual SERS enhancement mechanism through the synergistic effect of localized surface plasmon resonance and interfacial charge transfer. Consequently, the MIL-100(Fe)@Ag platform exhibited high-sensitivity quantitative detection capabilities for NE and adenosine: the detection limit for NE is 0.596 nmol/L; the detection limit for adenosine is 0.24 nmol/L. Crucially, when applied to patients with pheochromocytoma—a neuroendocrine tumor characterized by plasma catecholamine surges, this method achieved robust and stable detection of plasma NE. It offered comparable diagnostic accuracy to conventional mass spectrometry while significantly reducing analysis complexity. Therefore, this innovative strategy may hold great promise for the long-term, decentralized monitoring of sympathetic nerve activity in populations at risk for CVDs or related clinical disorders.
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Nature Communications
·
2026
·
IF 18.1
Lv Guoliang,Zhang Linjuan,Luo Yuanyuan,Zhu Jianqiu,Wu Jilong,Qin Li,Zhang Yanlin,Zhang Zheng,Tan Pengwei,Duan Guotao
Simultaneously achieving chemiresistive gas sensors with high selectivity, sensitivity, and stability remains a significant challenge. In this study, inspired by the H 2 S-specific catalytic enzymes in biological systems, we construct an amorphous unsaturated-ligand MIL-68(Fe) 3D MOF via in situ thermal induction. Without the introduction of extrinsic catalytic or conductive components, this MOF modification strategy creates unsaturated Fe atoms within the framework itself. These atoms function dually as catalytic and conductive sites, thereby overcoming the inherent low conductivity of conventional 3D MOFs and enabling the direct construction of chemiresistive sensor for room-temperature molecular olfactory sensing. The targeted water-adsorption-coordinated catalytic mechanism bypasses the limitations of traditional oxygen adsorption processes to achieve unprecedented comprehensive performance, including fingerprint-level selectivity (against 29 interfering gases), superior sensitivity coefficient (~83/ppm), ultra-low measured lower limit (1 ppb), rapid gas sensing response/recovery characteristics (~30 s/73 s), and excellent long-term stability at room temperature.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Senda Su,Xiaoman Li,Xu Zhang,Jingting Zhu,Guodong Liu,Mengyao Tan,Yingying Wang,Min Luo
The incorporation of polyoxometalates (POMs) in metal-organic frameworks (MOFs) with host-guest structure have proven to be effective strategy to rational design of heterogeneous catalysis. In this study, the Keggin-type POM@MIL-101(Cr) composite catalysts (PMo 12 , PW 12 and SiW 12 ) are synthesized for nitrogen fixation reaction without sacrificial agents at room temperature in the first time. The SiW 12 molecules are encapsulated in smaller cavities of MIL-101(Cr) by solvothermal method and in larger cavities by impregnation method, respectively. Solvothermal synthesized catalyst has a performance of 75.56 μmol·h −1 ·g -1 cat and TOF value of 1.95 h −1 , which are about 10 and 88 times than that of Na 4 SiW 12 O 40 . The excellent performance is ascribed to the synergistic effect of SiW 12 and MIL-101(Cr). The MIL-101(Cr) adsorbs a large amount of N 2 and generates sufficiently photogenerated electrons under sunlight irradiation, and electrons quickly transfer to the SiW 12 through hydrogen bonds. Moreover, the agglomeration effect of the homogeneous catalyst SiW 12 is weakened due to encapsulation with more exposed active sites. This work provides a feasible route to design and synthesize nanocomposite materials with exceptional performance for photocatalytic nitrogen fixation.
研究领域:
材料科学
·
环境科学
·
化学
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FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Yuhan Li,Lingmei Dai,Dehua Liu,Wei Du
Metal-organic frameworks (MOFs) with tunable porosity are promising carriers for enzyme immobilization, but their practical application is limited by structural instability and difficult recovery. We previously developed an oxidation-reduction (O-R) pyrolysis strategy for mesoporous MIL-88 A, yielding a magnetic carrier (O-R-Meso) with excellent lipase immobilization and recyclable catalysis. Herein, we verify the applicability of this O-R pathway for Fe-based MIL-88 A with tailored pore structures (micro-, meso-, macroporous) by extending it to microporous C-MIL-88 A and macroporous SOM-MIL-88 A. The O-R derivatives (O-R C, O-R-Meso and O-R-SOM) retained the original morphology and pore channel integrity, with improved specific surface area and sufficient magnetization (13–23 emu/g) for magnetic separation. Notably, after O-R pyrolysis, MIL-88 A with various pore sizes essentially maintained or even enhanced the specific activity of immobilized lipase ( Candida antarctica lipase B, CalB), successfully deriving into magnetic carriers with enhanced catalytic efficiency and recyclability. This superiority originates from the preserved pore structure and biocompatible γ-Fe 2 O 3 surface of the O-R derivatives, which effectively retain the native conformation of CalB. Besides, this work systematically compares the secondary structure of free and immobilized CalB on MOF-derived carriers with distinct pore architectures, providing direct structural evidence for the superior enzyme-carrier compatibility of mesoporous materials. In the transesterification synthesis of phosphatidyl EPA/DHA, CalB@O-R-Meso showed the highest EPA/DHA total incorporation, prominent sn -1 positional selectivity, and optimal reusability, outperforming CalB@O-R-C and CalB@O-R-SOM. Furthermore, kinetic studies on the CalB@O-R-Meso-catalyzed system confirmed a Ping-Pong Bi Bi mechanism and revealed competitive product inhibition by phosphatidyl EPA/DHA ( K i = 29.8 mM) with negligible internal mass transfer resistance (η ≈ 1). This work establishes a O-R pyrolysis strategy for tunable porosity Fe-MOFs, clarifies pore size-dependent enzyme -carrier compatibility, and provides a fundamental kinetic basis for phosphatidyl EPA/DHA synthesis.
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WATER SCIENCE AND TECHNOLOGY
·
2021
·Vol. 83
·期 5
·1118-1129
·
IF 1.915
Zhang Yaping,Gao Di,He Yufeng,Li Bozhen,Song Pengfei,Wang Rongmin
The attapulgite (APT), a typical nano-rod structured clay was introduced to MIL-101(Fe), a typical eco-friendly iron-based Metal-Organic Framework material (MOF), during the preparation by a one-step solvothermal method, which afforded a novel APT and MOF hybrid (APT@MIL). Based on the characterization of SEM, FT-IR and XRD, it was found that the rod-like crystals of APT determined the size of MIL-101(Fe) while maintaining its regular octahedral crystal form, and the crystal size of MIL-101(Fe) in APT@MIL enlarged 4 times. It was also discovered that the rod-like APT were evenly distributed in MIL-101(Fe) crystals. Using APT@MIL as the photocatalyst, some organic dyes were photodegraded in simulated sunlight. The analysis indicated that APT@MIL has high adsorption and photodegradation activity, the removal rate of methylene blue was up to 99.5%. Finally, the photocatalytic activity of APT@MIL was verified by UV-Vis DRS, photoluminescence spectra. The thermodynamic adsorption, kinetic characteristics adsorption, and removal mechanism of APT@MIL are also discussed. In summary, a novel hybrid material APT@MIL was successfully prepared with good adsorption and photocatalytic performance. It is expected to be used in photocatalytic degradation of dye wastewater. A new hybrid material APT@MIL was prepared by one-step solvent-thermal method. APT is not only distributed in MIL-101 (Fe) octahedral crystal, but also maintains the original structure of MIL-101 (Fe) octahedral crystal. Compared with MIL-101 (Fe), the crystal size of APT@MIL increased 4 times. The formation mechanism of APT@MIL was studied. The hybrid material has high efficiency in the removal of methylene blue wastewater.
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RSC Advances
·
2016
·Vol. 6
·期 77
·73741-73747
·
IF 3.289
Tianding Hu,Hongting Lv,Shaoyun Shan,Qingming Jia,Hongying Su,Na Tian,Shanchuan He
In this work, highly porous MIL-101 materials using hydrochloric acid (HCl) or hydrofluoric acid (HF) as a mineralizer were synthesized. The products were characterized with X-ray diffraction, scanning electron microscopy, thermal gravimetric analysis, and N2 sorption analysis. The results proved that the mineralizers had an obvious effect on the microstructures and morphologies of MIL-101, and MIL-101(HCl) showed remarkable superiority in a higher specific surface area, smaller particle size and higher crystallinity to the HF counterpart. These materials were then used to adsorb and remove the oxytetracycline (OTC) antibiotics from a water solution and an effective fast adsorption of OTC in aqueous solution was observed in the adsorptive kinetics. Compared with MIL-101(HF), a higher adsorption capacity on the MIL-101(HCl) was obtained, which was probably attributed to the higher specific surface area for the MIL-101(HCl). The adsorption mechanism might be greatly ascribed to π–π interaction, and acid–alkaline interaction between the oxytetracycline molecule and the adsorbent.
研究领域:
材料科学
·
环境化学
·
吸附技术
·
金属有机骨架材料（MOFs）
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JOURNAL OF POROUS MATERIALS
·
2022
·Vol. 30
·期 1
·311-325
·
IF 2.523
Li Zhengjie,Zhang Lu,Li Yunlong,Zhou Lilong,Han Jilong,Xu Hong,Yun Jimmy,Shen Shufeng,Liu Runjing
In the present work, functionalized MIL-101(Cr)-X (X = –Br, –CH 3 , –HSO 3 , –NO 2 ) materials with mesoporous pores were synthesized and used for tannic acid (TA) adsorption from aqueous solutions. In comparison with MIL-101(Cr), NO 2 -substituted MIL-101(Cr) was found to have positive surface charge and only slight reduction in its specific surface area, resulting in higher TA adsorption capacity than the parent MIL-101(Cr) and the others. Effect of operating parameters such as adsorption time, temperature, pH and ionic strength on the adsorption performance of MIL-101(Cr)-NO 2 was investigated. The TA adsorption capacity remarkably increases with increasing ionic strength adjusted by CaCl 2 . MIL-101(Cr)-NO 2 exhibits an adsorption capacity of 1619 mg/g, higher than that of the reported adsorbents, probably due to electrostatic interaction, π–π stacking interaction and Cr–O complexation interaction between MOF framework and TA. Adsorption isotherms and kinetic results are in accordance with Freundlich model and pseudo-second-order model, respectively. Moreover, the thermodynamics of TA adsorption on MIL-101(Cr)-NO 2 suggests an endothermic process.
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LANGMUIR
·
2022
·
IF 4.331
Zhiliang Jin,Xiaohong Li,Teng Li,Youji Li
Graphdiyne (g-CnH2n–2) is a new carbon material composed of sp and sp2 hybrid carbon atoms. Since the synthesis by Li’s team, graphdiyne has been widely studied in other fields because of its excellent properties. In this paper, graphdiyne was synthesized from copper-containing materials and the composite GDY/CuI/MIL-53(Al) S-scheme heterojunction is prepared for photocatalytic cracking of water to produce hydrogen. First, GDY/CuI was prepared by organic synthesis, and then GDY/CuI was anchored on the surface of MIL-53(Al) by in situ ultrasonic stirring. After the continuous optimization of experimental conditions, the final hydrogen evolution rate is much higher than that of MIL-53(Al). This efficient photocatalytic performance can be attributed to the S-scheme heterojunction formed by the unique energy band arrangement. At the same time, the mechanism of charge transfer was demonstrated by in situ irradiation X-ray photoelectron spectroscopy. The strong interaction among the three strongly promotes the separation and transfer of photogenerated electron–hole pairs.
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AICHE JOURNAL
·
2022
·Vol. 69
·期 4
·e17933
·
IF 4.167
Wei Xie,Yiping Guo,Jianping Li,Honglai Liu,Jun Hu
Metal organic frameworks (MOFs) have shown promising adsorptive desulfurization (ADS) capacity yet remains great challenges to maintain excellent performance in presence of water. Guided by the density function theoretical (DFT) calculations, we select bromine modified linkers with different substitution degrees to construct MIL-47-xBr to regulate the porosity and hydrophobicity. The optimized MIL-47-Br exhibits the highest saturation dibenzothiophene (DBT) capacity of 179.2 mgS g −1 from the hydrous oil, surpassing the record of all ADS adsorbents. Meanwhile, the excellent selectivity, adsorption kinetics, and recycle stability endow MIL-47-Br with superior ADS performance from the commercial hydrous gasoline. With the DBT capacity decreases by only 12.3% from the commercial gasoline, a continue flow ADS is successfully achieved on the fixed-bed of MIL-47-Br column. Therefore, this facial strategy of simple substitution can fully exploit the functions of open metal sites for enhancing the task-specific selectivity, and has a promising application prospect in industrial ADS.
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