MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Yingchun Gao,Yanmei Chen,Zhiyuan Li,Qi Lu,Yunyun Chen,Yangyang Jiang,Xiaoya Fang,Lei Song,Xiaoxia Mao
Antibiotic contamination is increasing and poses a major threat to the ecosystem. The development of effective and low-cost methods for the in-situ detection of ciprofloxacin (CIP) in environmental samples has become an important research hotspot. Here, we develop a smartphone-compatible visualization kit oriented for CIP detection based on metal–organic frameworks Eu-MOFs@hydrogel composites,which exhibits efficient and specific recognition of CIP and results in a change in fluorescence color from red to light blue. Besides, the concentration of CIP can be determined by RGB analysis on a smartphone with a wide linear range (0.002–50 μM) and a low detection limit (0.00137 μM). The assay kit also possesses good environmental adaptability and stability, showing excellent selectivity and anti-interference ability for 11 common veterinary drugs. Additionally, the recoveries of the sensing probe in chicken and duck manure samples ranged from 70.66 % to 112.2 % with the relative standard deviations (RSDs) within 1.88 %-5.53 %. These results indicate that the developed hydrogel portable smart detection kit has great potential for practical field testing of CIP.
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高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Haoyu Jia,Jinyue Hu,Le Zhao,Xiaoke Zheng,Weisheng Feng
Baohuoside I, a valuable flavonoid derivative of Herba Epimedii , exhibits superior bioactivities compared to its precursor, icariin. The conversion of icariin to baohuoside I using β-glucosidase (β-G) is an efficient approach for industrial production. Herein, β-G was successfully immobilized into a porous materials metal-organic frameworks (MOFs) via a simple one-pot coprecipitation method. The β-G@MOF biocomposite exhibited high encapsulation efficiency and excellent tolerance to extreme pH, high temperature, organic solvent and glucose. Remarkably, β-G@MOF retained its full initial activity even at 200 mM glucose. The β-G@MOF has a lower K m value compared with the free β-G, indicating enhanced substrate affinity. A conversion of 99.8 % was achieved in the hydrolysis of icariin to baohuoside I within 2 h. Additionally, β-G@MOF exhibited significantly reusability, maintaining 70.5 % yield after eight cycles at 60 °C. This study provides a simple, efficient, and sustainable approach for industrial production of baohuoside I and has potential for hydrolyzing other poorly soluble flavonoids.
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RARE METALS
·
2025
·
IF 11
Li Qiu-Hao,Zhou Qi,Wang Yun-Long,Chen Rui-Jie,Chen Chong
Nuclear energy provides a competitive path for reduction of CO 2 with water, whereas the high-efficiency utilization of radiolytically produced active species for oriented transformation remains challenging. Herein, we report the assembling of yttrium-decorated bimetallic MOFs via one-step hydrothermal strategy, which can act as a sensitized nanoreactor for syngas production under γ-ray irradiation. The flower-shaped CuNi-MOF matrix with tunable metal centers exposed plentiful cooperative active sites for CO 2 binding, and its nanopetals enabled the well dispersion of Y 2 O 3 nanoparticles on the surfaces. The introduction of high- Z element Y enhanced the secondary electron scattering and promoted the water radiolysis to produce more hydrated electrons (e aq − ), thus accelerating the initial CO 2 activation to CO 2 •− . Moreover, the in situ formed coupling interlayer provided a fast charge transfer channel between Y 2 O 3 and the MOF framework, which facilitated the interfacial electron migration for intermediate generation and subsequent CO 2 conversion. By regulating the contents of Cu and Y 2 O 3 within the nanocomposites, the affinity toward CO 2 and the product compositions could be modulated. As a result, the optimal 7CN-2Y catalyst achieved a high syngas evolution rate of 311.07 μmol g −1 with a H 2 /CO ratio of 2.7:1 at an absorbed dose of 4 kGy. The present study offered a feasible route for the efficient transformation of CO 2 into valuable chemicals and the design of viable catalysts for ionizing radiation. Graphical abstract
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FOOD CHEMISTRY
·
2025
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IF 9.8
Mingsha Jie,Amei Zhu,Jiaxin He,Bingxue Liu,Xiaoyue Yue,Zeyu Xu,Yanhong Bai
The excessive use of tetracyclines (TCs) poses a significant threat to human health, necessitating the development of convenient, rapid, and intelligent detection methods for monitoring TCs residues in food products. In this work, we present a heterogeneous-structured Eu/Ce-MOFs ratiometric fluorescence sensor. This sensor demonstrates excellent stability and high accuracy for TCs detection, with detection limits of 73.0 nmol/L for tetracycline (TC), 51.7 nmol/L for oxytetracycline (OTC), and 54.9 nmol/L for doxycycline hydrochloride (DOX). The Eu/Ce-MOFs ratiometric fluorescence sensor successfully quantified to TC, OTC, and DOX in pork and milk samples and achieved satisfactory recoveries ranging from 89.3% to 112.9%. Furthermore, a hydrogel-based visual sensing platform integrated with machine learning algorithms has been developed, significantly enhancing the detection accuracy of TC, OTC, and DOX. By combining smartphone imaging with machine learning algorithms, this visual sensing platform provides a dependable approach for TCs analysis.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Ziyang Zhang,Haoshuo Li,Jianguo Yuan,Shouwu Yu,Shujuan Xiao
The catalyst loading onto polymer films by pump-filtration can effectively solve the problem of catalyst separation and recycling, as well as expose more catalytically active sites. However, this method suffers from the disadvantage of poor catalyst attachment stability, which reduces the ability to catalyze the degradation of pollutants. In this paper, the high adhesion and film-forming properties of chitosan (CS) were utilized to modify the ZnO/NH 2 -MIL-88B (ZM) catalyst-loaded polypropylene non-woven (PP) composite membranes obtained by filtration, and CS/[ZM@PP] catalytic membranes with excellent catalyst adhesion stability and catalytic degradation performance were prepared. The results showed that the prepared CS/[ZM@PP]-X catalytic membranes significantly improved the recovery of the catalysts and possessed good catalytic performance, and the best-performed CS/[ZM@PP]-3 membrane could degrade more than 96.8 % of methylene blue (100 mL, 20 mg/L) within 60 min. In this paper, the effects of different factors on the catalyst recovery on the catalytic membrane were systematically investigated, and the prepared CS/[ZM@PP]-3 membrane can adapt to the complex aqueous environment, has excellent cycling stability, and still has more than 90 % degradation effect after 6 times of recycling, which has good potential for practical application.
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MICROCHIMICA ACTA
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2020
·Vol. 187
·期 12
·1-9
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IF 6.232
Zhao Yunfei,Chen Jun,Zhong Hangtian,Zhang Chengli,Zhou Yuan,Mao Weiran,Yu Chao
The development of a novel signal amplification system is described for sensitive determination of α2,6-sialylated glycans (α2,6-sial-Gs), an important prognostic tumor biomarker. First, Fe-based metal-organic frameworks (Fe-MOFs) with silver nanoparticles (AgNPs) decorated onto the outer surface were designed and synthesized with controlled octahedron structures. The new Ag/Fe-MOFs nanocomposite possessed strong conductivity and a large surface area to carry more nanoprobes. To connect the Ag/Fe-MOFs nanocomposite with more groups, the nanocomposite was functionalized by -COOH with SH-PEG-COOH to bind with an α2,6-sial-Gs catcher, M-APBA, via -CONH- bonds. More importantly, the Ag/Fe-MOFs also exhibited an excellent endogenous redox mediator property to produce electrons, which is the fundamental mechanism underlying amplification of an electronic signal. A gold electrode was used to accelerate electron transfer and immobilize the α2,6-sial-Gs lectin (SNA). After the sandwich-type catcher recognition (SNA/α2,6-sial-Gs/M-APBA), the current peak response was provoked in the process of oxidizing AgNPs to Ag + in the forward anodic potential sweep, while Cl − in a PBS solution was transferred into Ag + to maintain charge neutrality. Optimized particles were employed for direct fabrication of the sandwich-type affinity biosensor, which was found to show a linear detection range from 1 fg mL −1 to 1 ng mL −1 with a detection limit of 0.09 fg mL −1 . Furthermore, the biosensor exhibited excellent specificity and stability, indicating that such a novel nanobiotechnology platform can be used to initiate potential utility for monitoring biomarkers in serum. Graphical abstract
(A)Schematic presentation of synthesis and surface modification of Ag/Fe-MOFs. The new Ag/Fe-MOFs nanocomposite possessed commendable conductivity and large surface area to carry more nanoprobe; after functionalizing the Ag/MOFs with SH-PEG-COOH, the functionalized endogenous redox mediator (c-Ag/MOFs) realized the possibility that can connect with the biological catcher. (B) Schematic diagram of electrode construction for detecting α2,6-sialylated glycans (α2,6-sial-Gs). By using the c-Ag/Fe-MOFs functional endogenous redox mediator, we successfully implemented the electrochemical detection of α2,6-sial-Gs.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
·
IF 8.1
Guiming Xie,Xingyang Bai,Yanrui Niu,Zhangjun Bai,Qingyuan Yang,Jian Liu,Zhou-jun Wang
ZIF-8 was employed as partial Zn source to prepare high-performance Cu/ZnO/Al 2 O 3 catalysts for methanol synthesis via carbon dioxide (CO 2 ) hydrogenation. Among the CuZnAl-x catalysts (x = 1, 0.75, 0.5, 0.25 and 0, denoting molar ratio of ZIF-8/(ZIF-8 + Zn(NO 3 ) 2 ·6H 2 O), the CuZnAl-0.5 catalyst possessed the highest space time yield of methanol ( STY MeOH ), which recorded 416.4 g MeOH kg cat −1 h −1 at 250 °C and 3.0 MPa. Using ZIF-8 as partial Zn source was found to increase the specific surface area, induce oxygen vacancies, intensify metal-oxide interactions and enrich medium basic sites, which may rationalize the excellent methanol synthesis activity of the CuZnAl-0.5 catalyst. Besides, the CuZnAl-0.5 catalyst showed good stability for 30 h of reaction. This work offers a unique route to fabricate catalysts with the aid of MOFs precursors and highlights the significance of oxygen vacancies in methanol synthesis catalysts.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Qishuo Chang,Hongke Li,Jing Ma,Yanwu Zhang,Guanying Dong,Dongyang Li,Jing Wang,Yatao Zhang
Membrane materials with high gas permeation and satisfied selectivity are crucial for achieving efficient C 3 H 6 /C 3 H 8 separation. Although PIM-1 membranes have drawn tremendous attention in gas separation, their broader application is hampered by intrinsic aging phenomenon and relatively low C 3 H 6 /C 3 H 8 selectivity. In this work, the Ni(AIP)(BPY) 0.5 (defined as Ni-MOF) with thermodynamic and kinetic synergistic separation effect on C 3 H 6 /C 3 H 8 was introduced to PIM-1/Matrimid 5218 blend matrix for preparing mixed matrix membranes (MMMs) to overcome the drawbacks of PIM-1. Benefiting from the rapid C 3 H 6 transport channel of Ni-MOF, the PIM-Matrimid/Ni-MOF-7 MMMs exhibit exceptional separation properties, achieving C 3 H 6 permeability of 1762.5 Barrer and C 3 H 6 /C 3 H 8 selectivity of 8.5 (increased by 107% over PIM-1 membranes). Moreover, the C 3 H 6 permeability of PIM-Matrimid/Ni-MOF-7 MMMs showed only a 14% decline after 60 days. This work not only offers a new perspective for developing next-generation C 3 H 6 /C 3 H 8 separation membranes but also emphasizes the importance of rational design in maximizing the mixed-matrix effect.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Feixiang Zhou,Linfeng Fu,Qingping Wu,Chao Ding,Le Yu,Weidong Zhou,Fahai Cao,Hui Liu,Jun Xu
Composite solid polymer electrolytes (SPEs) with metal organic frameworks (MOFs) fillers offer a promising route to improve lithium (Li)-ion transport and mechanical stability, but challenges such as poor filler/polymer compatibility and uncontrolled anion mobility. Herein, we present a molecularly engineered approach by covalently grafting a single-ion conductor (LiSTFSI) onto UIO-66-OH via an organosilane coupling agent (KH570), yielding a functional filler denoted as Li@UIO. When integrated into a PEO/LiTFSI matrix, Li@UIO constructs tripartite Li + conduction pathways through polymer segmental motion, intrinsic MOF ion-conducting sites, and MOF/polymer interfacial transport routes, while simultaneously immobilizing TFSI − anions and weakening Li + solvation structure. This synergistic design significantly enhances ion transport dynamics, achieving high ionic conductivity (2.57 × 10 −4 S/cm at 30 °C), enabling stable Li plating/stripping for over 3000 h with a low overpotential of 19 mV. In LiFePO 4 ‖Li@UIO/PL‖Li full cells, it delivers 85.1 % capacity retention after 600 cycles at 1C (60 °C). This study provides a new paradigm for designing multi-channel, single-ion-enhanced SPEs, offering a viable route toward safe, dendrite-free, high-energy-density lithium metal batteries.
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高影响因子
IONICS
·
2025
·
IF 2.6
Yin Ning,Li Qiaoxia,Wang Fuming,Min Yulin,Xu Qunjie
Composite solid electrolytes (CSEs) combine the advantages of solid polymer electrolytes and inorganic solid electrolytes, making them promising candidates for all-solid-state lithium metal batteries. However, current CSEs exhibit deficiencies such as low ionic conductivity, lithium dendrite growth, and susceptibility to damage of the electrolyte membrane, which hinder their practical applications. Therefore, designing composite solid electrolytes with novel structures is crucial for enhancing the overall performance of batteries. In this study, PVDF-HFP was chosen as the polymer electrolyte matrix, while a network structure filled with two-dimensional MOF (UMCM-309a) served as the skeleton. The composite solid electrolyte (CSE) was prepared using a simple solution casting method, incorporating PVDF-HFP, lithium bis (trifluoromethanesulfonyl) imide (LiTFSI), and two-dimensional MOF (UMCM-309a). The developed PVDF-HFP/LiTFSI/MOF (PLM) electrolyte demonstrates remarkable ionic conductivity of 5.7 × 10 −4 S cm −1 at 60 °C, along with an extensive electrochemical stability window of 4.8 V. The Li|10% PLM CSE|LiFePO 4 cell exhibits exceptional cycling performance and longevity, maintaining 95% capacity retention after 1000 cycles of stable operation at 60 °C and a rate of 1 C. Furthermore, the Li | Li symmetric cell illustrates strong interfacial compatibility, achieving stable cycling for 1100 h at a current density of 0.1 mA cm −2 . Therefore, the PLM CSE composite provides a straightforward and effective approach for achieving high-performance lithium batteries, facilitating ultra-stable operation in solid-state lithium metal batteries. Graphical
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jian Feng,Shao-hua Luo,Peng-wei Li,Yi-cheng Lin,Lin Zhang,Qing Wang,Ya-hui Zhang
Hybrid hierarchical nanostructures have a significant impact on engineering novel anode materials for boosting the performance of sodium-ion batteries (SIBs). Here, a hierarchical porous structure constituted by CoSe nanocrystals embedded in nitrogen-doped carbon polyhedron with the embellishment of 2H-MoSe 2 nanosheets (CoSe@NC/MoSe 2 ) is fabricated by a metal-organic frameworks (MOFs)-engaged strategy and subsequent selenization reaction. The presence of N-doped carbon matrix and bimetallic selenides significantly enhance electronic and ionic diffusion kinetics. In addition, the porous structure provides short Na + diffusion distance and guarantees outstanding structural stability upon cycling. Due to these distinctive features, the CoSe@NC/MoSe 2 composite displays superior cyclability of 305.9 mAh g −1 up to 1500 loops at 5.0 A g −1 and exceptional rate property of 286.1 mAh g −1 at 10.0 A g −1 for sodium storage. When matched with Na 3 V 2 (PO 4 ) 3 @C cathode, a SIB full cell can maintain a high invertible capacity of 78.9 mAh g −1 total over 100 loops at 0.5 A g −1 . Moreover, the multistep conversion reactions mechanism is further identified by kinetics analysis, and ex situ and in situ characterization.
研究领域:
材料科学
·
电化学
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Li Ma,Xiong Zhao,Zijuan Luo,Zhenzhen Chen,Jinjia Wei,Nanjing Hao
Porphyrin-based metal–organic frameworks are widely utilized in the photocatalytic field owing to their unique photosensitive properties. Whereas controllable substrate morphology and uniform distribution of the noble metal nanoparticles still remain challenging in traditional synthesis. Herein, Cu-TCPP@MOFs and PtNPs/Cu-TCPP@MOFs with flower-like architecture were produced via continuous flow strategy and double spiral microreactor efficiently and controllably. The results revealed that 5.2 wt% Pt nanoparticles with 2.68 nm were embedded evenly on the Cu-TCPP@MOFs within 5 min. Compared to the Cu-TCPP@MOFs, the PtNPs/Cu-TCPP@MOFs exhibited much superior catalytic performance for rhodamine B (RhB) degradation under visible-light-driven, the reaction rate constant and catalytic activity parameter increased from 0.010 to 0.027 min −1 , and 0.03 to 11.25 s·g −1 , respectively. The free radical capture experiments revealed that h + , ·OH, and ·O 2 − played a synergistic role in the RhB degradation, whereas ·OH plays the most prominent effect. The reasonable degradation pathways of RhB were proposed by combining the density functional theory (DFT) with liquid chromatography mass spectrometry (LC-MS) investigation. This work not only provided insights into the design and controllable preparation of high-performance photocatalysts but also provided an effective strategy for degrading organic pollutants in the water environment, which poses significant environmental and economic benefits.
研究领域:
材料化学
·
环境科学
·
光催化
·
纳米技术
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分析化学
·
理论计算化学
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危险品化学品经营许可证（带存储）