Analytical Methods
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2025
·
IF 2.6
Jiaxi Deng,Yiyao Luo,Jia Zheng,Zirui Yuan,Yi Ma,Huibo Luo,Xiaogang Luo,Danqun Huo,Changjun Hou
Baijiu represents the pinnacle of traditional Chinese culinary culture. The influence of Baijiu is evident in various literary works, rituals and banquets, dishes and healthcare, and numerous other areas. The reduction of substances plays a pivotal role in the flavor, aroma, and quality control of Baijiu. Therefore, the present work focuses on Baijiu and the reducing substances in it. In this study, CDs@ZrFe-MOF and three distinct catalase nanase substrates (ABTS, OPD, and TMB) were employed to create fluorescence and colorimetric dual-mode sensor arrays. The oxidation of the enzyme substrate into the appropriate oxidation substrate is facilitated by CDs@MOF in the presence of H₂O₂. The reducing substance effectively inhibits the formation of the oxidation substrate, resulting in alterations in fluorescence and UV intensity. The dual-mode sensor array was found to be effective in detecting 15 different types of reducing chemicals. Furthermore, the colorimetric and fluorescence sensor array demonstrated exceptional detection capability in detecting 19 different types of Luzhou-flavor liquor samples, achieving a 100% accuracy rate. This study will provide an accurate and rapid method for differentiating Baijiu.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Shenghui Tu,Peng Zhou,Mingming Dong,Wenbin Wu,Lu Sun
In this study, an efficient and magnetic Co/CeO₂@GC catalyst was synthesized by calcination using Co@Ce-MOF as precursor. The effects of different catalyst dosages, tetracycline (TC) concentrations, pH values, peroxomonosulfate (PMS) concentrations, temperatures, and coexisting anions on the catalytic performance were investigated. Under the conditions of 20 mg catalyst and 20 mg PMS, the degradation rate of 100 mL of 40 mg/L tetracycline could reach 95.7%. The catalyst maintained effective PMS activation across a broad pH range (5-11), retaining 79.2% activity after four consecutive cycles. Electron paramagnetic resonance spectroscopy and radical quenching experiments confirmed the coexistence of both radical pathways and non-radical pathways in the system, with the latter identified as the dominant contributor to the degradation process. Reaction pathway analysis via liquid chromatography-mass spectrometry further elucidated TC transformation mechanisms under these oxidative conditions. This work proposed a MOF-derived materials as an efficient PMS activator for a simple method of TC degradation.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Junfei Wu,Qin Zhang,Zhuojun He,Yingli Zhang,Yangli Chen,Hai-Bo Liu,Jing Wang
Tetracycline antibiotics (TCs) are widely distributed in the environment owing to excessive usage and incomplete metabolic breakdown, posing significant risks to ecosystems and human health. Herein, a bifunctional material, Cu-TATB-PCA, was prepared for simultaneous adsorption and detection of TCs. The material was constructed using Cu-MOF as the structural scaffold, with 1-pyrenecarboxylic acid (PCA) grafted via a postsynthetic ligand exchange (PSE) approach. The incorporated PCA moiety functions as both an active site for enhanced adsorption capacity and a fluorescent reporter for sensitive detection. Cu-TATB-PCA demonstrated a remarkable adsorption performance toward TCs, with a maximum adsorption capacity of 520.8 mg/g for oxytetracycline (OTC), 473.9 mg/g for chlortetracycline, and 469.5 mg/g for tetracycline (TC). The high adsorption capacity was mainly attributed to the dominant role of π-π interactions, which worked synergistically with coordination bonds, electrostatic interactions, and hydrogen bonds to collectively contribute to the adsorption process. In addition, Cu-TATB-PCA exhibited a highly sensitive fluorescent response toward TCs due to the mechanism of inner filter effect, which achieved a detection limit of 0.586 μM for TC and 0.776 μM for OTC. The streamlined and efficient material design paradigm paves the way for the development of bifunctional adsorption-detection materials and offers a promising avenue for future research endeavors in this field.
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SURFACE & COATINGS TECHNOLOGY
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2025
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IF 6.1
Xiaoru Hao,Haowen Ji,Longxiang Xu,Zhihao Cheng,Chaobin Dang,Ruirui Wang,Chunxiao Yue
To enhance the resistance to corrosion of metals, a hierarchically structured superhydrophobic coating fabricated from MOF(ZIF-67) nanoparticles and polyurethane resin was created. The ZIF-67 nanoparticles were modified by dodecyltrimethoxysilane (DTMS) and lauric acid (LA), and the superhydrophobic composite coating was prepared using the spraying method. The prepared ZIF-67/DTMS/LA/PU superhydrophobic composite coatings exhibited excellent hydrophobicity (WCA = 157.5°), self-cleaning, and corrosion resistance and remained superhydrophobic after 12 days of immersion in 3.5 wt% NaCl solution. It is noteworthy that after being immersed in a 3.5 wt% NaCl solution for 168 h, the impedance modulus of the ZIF-67/DTMS/PU coating still exceeded the initial impedance modulus of the 7075aluminum alloy after immersion, indicating that the ZIF-67/DTMS/PU coating can provide long-term protection for the aluminum alloy. The coating offers a broad range of potential applications due to its exceptional corrosion resistance, anti-icing, and self-cleaning qualities.
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Catalysts
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2025
·Vol. 15
·期 9
·812
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IF 4
Xinru Gao,Han Meng,Changan Wang,Jinzhang Tao,Hongyi Gao
The development of highly efficient catalysts for the hydrogenation of dicyclopentadiene (DCPD) remains a critical challenge. In this study, we designed a series of bimetallic Ce–Ni metal–organic framework (MOF)-derived nanocatalysts by precisely tuning the Ce/Ni ratio and calcination temperatures. The optimized catalyst, Ni–CeO2(7:3)@C–400 °C, featuring highly dispersed carbon-coated Ni nanoparticles, achieved complete hydrogenation of DCPD to tetrahydrodicyclopentadiene (THDCPD) with 100% conversion and nearly 100% selectivity within 2 h under 100 °C and 2 MPa. The porous carbon framework significantly facilitated the diffusion and accessibility of DCPD molecules, combined with Ce species reconstructing the electronic structure of Ni active centers through electronic interactions, synergistically enhancing the hydrogenation efficiency. Furthermore, the catalyst demonstrated good structural stability. This work not only provides a robust strategy for the rational design of bimetallic MOF-derived catalysts but also highlights their potential for practical applications in industrial hydrogenation processes.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Kangxin Bai,Yang Liu,Zhuangzhi Li,Jiajie Shi,Zhenggong Wang,Jian Jin
The separation of C2H4/C2H6 is crucial for the efficient production of C2H4. The energy-efficient membrane technology has great potential in this separation. However, the similar physical properties of the two molecules make them extremely difficult in membrane separation. Herein, a series of nanosized MOF-808 particles were incorporated into a polyimide matrix to fabricate mixed matrix membranes (MMMs) for C2H4/C2H6 separation. The well-defined pore architecture of MOF-808 enables effective C2H4 purification through molecular sieving, while the restricted diffusion of C2H6 molecules within the MOF-808 channels facilitates remarkable kinetic separation. Importantly, the nanosized MOF-808 can be dispersed more evenly in the polymer matrix, significantly improving the compatibility between the polymer matrix and filler, thereby maximizing the sieving effect of MOF-808. The resulting nanosized MOF-808-based MMM demonstrates a high C2H4 permeability of 1187 barrer and a C2H4/C2H6 selectivity of 2.8, which has exceeded most of the MMMs reported so far and surpassed the 2013 upper bound. Our MMMs also show excellent long-term stability and antiplasticization performance. Our work highlights the effectiveness of enhancing the separation performance of MMMs by using reducing nanosized MOF-808, providing valuable insights for the design of MMMs for C2H4/C2H6 separation.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Po-Chun Wu,Ho Jun Lee,Yi-Fan Lin,Kuo-Lun Tung,Jong Suk Lee,Dun-Yen Kang
Carbon capture is widely recognized as a pivotal technology for alleviating the accelerating impacts of global warming. Mixed matrix membranes (MMMs) that embed metal organic frameworks (MOFs) offer a compelling route to high-performance separations, and MOF-808 stands out among them because of its outstanding chemical stability and environmentally friendly synthesis. In this study, the defect density of MOF-808 was tuned by varying the formic acid modulator: Higher modulator loading produced MOF-808 with higher linker defect density. After synthesis, MOF-808 was washed with either water or ethanol and then incorporated into PEBAX matrix through a drying-free process that ensured uniform dispersion. Washing with ethanol altered the pore coordination environment of MOF-808, partially replacing formate with ethoxide. Introducing an appropriate amount of formic acid created additional open metal sites and increased both CO 2 permeability and CO 2 /N 2 selectivity; however, excessive formic acid produced too many defects, causing severe pore blockage and consequently lowering the CO 2 permeability. The drying-free method, by preventing MOF aggregation and ensuring homogeneous dispersion, led to a 38 % increase in CO 2 /N 2 selectivity compared with the conventional drying method. The ethoxide substitution induced by ethanol washing occupied part of the pore volume, leading to a reduction in CO 2 permeability. The optimized MOF-808/PEBAX MMM achieved a CO 2 permeability of 150 Barrer and a CO 2 /N 2 selectivity of 76.4, both markedly higher than those of the pristine polymer. These results highlight a sustainable, scalable strategy for producing high-efficiency membranes for post-combustion CO 2 capture.
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JOURNAL OF LUMINESCENCE
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2025
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IF 3.6
Bin Wu,Denggerile Ao,Jun Ai,Lu Ga
Herein, a simple wet-milling synthesis method is reported for the production of Eu/Tb-based bimetallic-organic frameworks (Eu/Tb-MOFs). The introduction of the ligand 2, 5-dibromoterephthalic acid significantly turned on the characteristic fluorescence of the Eu/Tb-MOF at 620 nm through the “antenna effect”. The material was used as a fluorescent probe to detect tetracycline. In the presence of tetracycline, the fluorescence emission of Eu/Tb-MOF was dramatically turned off, allowing ratiometric fluorescence quantification of tetracycline. In addition, the combination of Eu/Tb-MOF with hydrogel can observe the afterglow property, which lays the foundation for the application in the field of anti-counterfeiting. Finally, Eu/Tb-MOF as a multifunctional fluorescent probe can also be used for fingerprint identification.
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MOLECULES
·
2025
·Vol. 30
·期 16
·3388
·
IF 4.6
Shefeng Li,Pengyi Zhao,Ziyang Liu,Chang Wang,Linling Wang,Siyu Ding
Microwave-assisted processing has shown tremendous promise in accelerating chemical reactions and reducing energy consumption through targeted dielectric heating. This study develops MOF-derived Mn-Co and Ce-Co oxide catalysts for energy-efficient benzene oxidation via microwave catalysis. The MnCo spinel oxides (particularly MnCo11-400) exhibit superior microwave absorption and catalytic activity due to enhanced oxygen mobility and tailored dielectric properties. Microwave irradiation enables rapid benzene mineralization over the MnCo11-400 catalyst, achieving 78% conversion at 30 W and complete conversion at 50 W, demonstrating exceptional energy efficiency at low power inputs. Microwaves significantly lower the reaction temperature compared to conventional thermal catalysis (ΔT = 100–250 °C). Stability tests confirm robustness over repeated power cycling (80% conversion retained after 3 × 1 h on/off cycles). Furthermore, an adsorption–microwave oxidation synergistic strategy is demonstrated: pre-adsorbed low-concentration benzene (1.15 mmol) at ambient temperature undergoes complete mineralization within 20 min under 30 W microwave irradiation. The intermittent microwave operation achieves equivalent benzene removal to continuous thermal processing while significantly reducing energy demand. This work establishes MOF-derived spinel oxides as high-performance microwave catalysts for low-temperature VOC abatement.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Linfeng Liang,Jianan Cui,Xinrong Han,Yinkang Ding,Jing Yang,Sanhu Zhao,Huan Li
Previously, we reported a 1,3,5-triazine-based metal–organic framework (MOF) constructed via the in situ hydrolysis of melamine. However, the use of template molecules within the pores posed significant challenges for material activation and resulted in pronounced fluorescence quenching. In this work, we introduce a more sustainable and template-free synthetic strategy by directly employing ammeline as the organic ligand to construct a triazine-based MOF, SXU-120(ammeline). This approach simplifies the activation process, enhances solid-state fluorescence, and improves stability. The resulting MOF demonstrates high sensitivity and selectivity for aqueous Cr2O72– ions, achieving a Stern–Volmer quenching constant (KSV) of 5.13 × 104 M–1. Furthermore, a scalable reflux-based synthesis route was developed, reinforcing the material’s potential for practical and eco-friendly environmental sensing applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Lei Zhu,Hongye Lu,Tianci Huo,Dongxiao Liu,Zechen Yan,Jianqiang Zhang
The frequent oil leakage accidents cause huge loss of natural resources and serious damage to the ecosystem. Although all kinds of modified sponges have been invented to deal with the offshore oil spills, it is difficult to separate high viscosity crude oil and water-in-oil emulsions. To address these challenges, a modified polyurethane (PU) sponge (PDMS/MOF-74@PU) coated by polydimethylsiloxane (PDMS) with ultra-low surface energy after growing spindle-shaped metal–organic framework structure (MOF-74) on the PU sponge surface was prepared. With the advantages of super-hydrophobic and high porosity, the prepared sponge can selectively and effectively absorb various oils from oil/water mixtures and it has good oil adsorption capacity (18–55 g/g). Meanwhile, the black MOF-74 endows the PDMS/MOF-74@PU photothermal properties for the separation of high viscosity crude oil under the light conditions. As well as, the prepared sponge shows excellent separation performance for the water-in-oil emulsions, the amount of water in the oil could reduce to less than 20 ppm and the separation efficiency could reach as high as 99.9 % after separation. In addition, we used molecular dynamics to verify the mechanism by which PDMS coatings change the surface wettability of materials. With the excellent mechanical property, chemical stability, and thermal stability in various harsh environments, the PDMS/MOF-74@PU have a broad application prospect in the treatment of offshore oil spills.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Han Dong,Pu Zhou,Fan Yang,Enhao Zhang,Yifan Liu,Yefei Tian,Hongye Yuan
The development of metal–organic framework (MOF)-based adsorbents with high uptake capacity and mild regeneration conditions represents a promising avenue for addressing environment-based issues. In this study, we present the successful synthesis of temperature-responsive composite aerogels comprising MOF-808 and poly(N-isopropylacrylamide) (PNIPAM), which forms interpenetrated networks with acrylamide (AM). The resulting thermally responsive PNIPAM/MOF-808 composite aerogels achieved an impressive maximum water capture exceeding 2267 wt % at room temperature, with reversible release observed above 32 °C due to the hydrophilicity–hydrophobicity transition of PNIPAM. Interestingly, the aerogels also exhibit an iodine (I2) capacity of 234 wt % based on the charge transfer mechanism. This study provides a novel strategy for the preparation of efficient and reusable porous adsorbent materials, and it also demonstrates broad application prospects in areas such as water resource management and waste reduction.
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