Food Bioscience
·
2025
·
IF 5.9
Xueer Lin,Jiahui Zou,Guancheng Zhu,Linfeng Pang,Yuqi Chen,Yanyan Huang
To effectively overcome the shortcomings of traditional chromatographic and enzymatic methods for detecting organophosphorus pesticides, Cu-MOFs with inherent peroxidase (POD)-like activity were constructed for direct colorimetric detection of omethoate (OMT). Benefiting from the mesoporous and benzene ring structure, Cu-MOFs demonstrated excellent OMT enrichment capability. OMT exhibited a pronounced inhibitory effect on the POD-like activity of Cu-MOFs whereas other pesticides showed negligible interference, demonstrating the specific identification of OMT by Cu-MOFs. Experimental data and theoretical calculations indicated that OMT effectively bond to Cu-MOFs through Cu 2+ coordination and ligand binding. Owning to its enrichment, identification and catalytic abilities, OMT detection was achieved and the limit of detection (LOD) was 16 μg L −1 . Furthermore, a smartphone-assisted portable detection was established with a LOD of 79 μg L −1 . Validation experiments of cabbage samples confirmed its’ reliability for practical applications. Our system integrated the enrichment, identification, and detection of OMT within a single system, improving both sensitivity and operational convenience.
研究领域:
分析化学
·
纳米技术
·
环境科学
·
生物传感器
·
农药检测
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 5
·508
·
IF 5.4
Ya Yang,Wenhui Ji,Yutao Yin,Nanxiang Wang,Wanxia Wu,Wei Zhang,Siying Pei,Tianwei Liu,Chao Tao,Bing Zheng,Qiong Wu,Lin Li
Rapid and accurate detection of changes in glucose (Glu) and hydrogen peroxide (H2O2) concentrations is essential for the predictive diagnosis of diseases. Electrochemical biosensors exhibiting high sensitivity, reliable selectivity, and rapid response provide an advantageous and promising solution. A porous two-dimensional conductive metal–organic framework (cMOF), Ni-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene), was prepared by using a one-pot method. Subsequently, it was employed to construct enzyme-free paper-based electrochemical sensors by applying mass-producing screen-printing and inkjet-printing techniques. These sensors effectively determined Glu and H2O2concentrations, achieving low limits of detection of 1.30 μM and 2.13 μM, and high sensitivities of 5573.21 μA μM−1cm−2and 179.85 μA μM−1cm−2, respectively. More importantly, the Ni-HHTP-based electrochemical sensors showed an ability to analyze real biological samples by successfully distinguishing human serum from artificial sweat samples. This work provides a new perspective for the use of cMOFs in the field of enzyme-free electrochemical sensing, highlighting their potential for future applications in the design and development of new multifunctional and high-performance flexible electronic sensors.Keywords:Ni-MOFs;paper-based sensors;electrochemical sensor;non-enzymatic catalysis;hydrogen peroxide;glucose
研究领域:
分析化学
·
生物传感器
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Junfeng Qin,Shijie Hu,Xiaohua Zhang,Min Hong,Cuicui Du,Jinhua Chen
Although Metal-organic frameworks (MOFs) have attracted extensive attention in energy-related fields, the direct application of MOF as bifunctional electrocatalysts for overall water electrolysis still remains a challenging topic. Herein, nickel foam (NF) self-supported hydrangea shaped NiRu bimetallic MOFs (NiRu-PTA/NF) prepared by a simple one-step hydrothermal method was directly used as bifunctional electrocatalyst, and exhibited highly-efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalytic performances for alkaline freshwater/seawater overall splitting owing to the large active surface area, abundant active sites and high intrinsic activity attributed to the unique morphology, enriched oxygen vacancies and modulated electronic structure of the catalyst. Specifically, NiRu-PTA/NF needed only 16 mV overpotential to drive a HER current density of 10 mA cm −2 and 298 mV overpotential to drive a OER current density of 20 mA cm −2 in alkaline freshwater, much lower than those of Ni-PTA/NF ( η 10,HER = 162 mV, η 20,OER = 372 mV) and Ru-PTA/NF ( η 10,HER = 36 mV, η 20,OER = 335 mV). Furthermore, a two-electrode configured water electrolysis cell assembled with NiRu-PTA/NF as both cathode and anode required a very low cell voltage of 1.54 V to achieve an electrolytic current density of 10 mA cm −2 and were operated continuously for 200 h at various current densities including 10, 100 and 200 mA cm −2 . Additionally, the NiRu-PTA/NF-assembled electrolysis cell also displayed excellent seawater electrolysis performance. This study proposes an available strategy to design highly-efficient bifunctional catalysts for overall freshwater/seawater electrolysis based on electronic structure and oxygen vacancy modulation between bimetallic centers of MOFs, and extends their promising application prospects for industrially clean hydrogen production.
研究领域:
材料科学
·
能源化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Mengqiu Huang,Lei Wang,Ke Pei,Bangxin Li,Wenbin You,Liting Yang,Gang Zhou,Jincang Zhang,Chongyun Liang,Renchao Che
Heterogeneous interface regulation plays an important role in tailoring the intrinsic electromagnetic (EM) properties for obtaining excellent EM wave absorption, which still faces huge challenge. In this work, bi-metal MOFs-derived ZnFe 2 O 4 –ZnO-Fe@C (ZZFC) microspheres with custom-built heterogeneous interfaces are successfully fabricated via a confined growth strategy. Bi-metal Fe–Zn–ZIF with tailored coordination structure and chemical bonding are first selected as the precursor template. After undergoing the annealing process, the metal Fe 2+ host is converted into magnetic Fe nanoparticles (NPs). The Zn 2+ host is transformed into semiconductor zinc oxide (ZnO) with increasing (101) crystal-oriented growth. At the same time, metal hosts Fe 2+ and Zn 2+ are further reacted to synthesize the zinc ferrite (ZnFe 2 O 4 ). Formed Fe nanoparticles catalyze organic ligands to constitute graphitized carbon layers, which confine the further growth of ZnFe 2 O 4 , ZnO, and Fe NPs. Combined with the well impendence and synergy absorption mechanism (magnetic loss, interface polarization, and conduction loss), optimized magnetic–dielectric ZnFe 2 O 4 –ZnO-Fe@C microspheres exhibit outstanding EM wave absorption with the minimum reflection loss −66.5 dB at only 2.0 mm thickness. Bi-metal MOF-derived magnetic–dielectric absorption materials with tailored heterogeneous interfaces provide a new sight to design an efficient EM wave absorption system.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 7
·2101-2107
·
IF 5
Jianhao Qiu,Lu Zhang,Guanglu Xia,Dingliang Dai,Yong Tang,Jianfeng Yao
Different ligand functionalized UiO-66 (UiO-66-X, X = OH, (OH)2 and NH2) were prepared and then modified by ZnIn2S4 lamellas to form ZnIn2S4/UiO-66-X heterostructures for visible-light-driven H2O2 evolution in pure water. The H2O2 yields using ZnIn2S4/UiO-66-NH2, ZnIn2S4/UiO-66-(OH)2 and ZnIn2S4/UiO-66-OH are 799, 733 and 165 μmol L−1, respectively, which are 9.5, 8.7 and 2.0 times that of ZnIn2S4/UiO-66. The high performance of ZnIn2S4/UiO-66-NH2 and ZnIn2S4/UiO-66-(OH)2 is ascribed to the benign visible-light response and Z-scheme heterostructures, and the H2O2 evolution abides by indirect O2 reduction with ˙O2− as an intermediate species. Additionally, H2O2 yields using ZnIn2S4/UiO-66-NH2 on tap water and Xuanwu Lake (Nanjing, China) water can be comparable to that on the above-deionized water. This study sheds light on the great promise of functionalized MOFs and their applications on green (photo)catalytic energy conversion.
研究领域:
材料科学
·
光化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Mingfei Pan,Xuan Liu,Jingming Sun,Dan Zhang,Yixin Wang,Xiaochun Hu,Shuo Wang
This study utilized computational simulation and surface molecular imprinting technology to develop a magnetic metal-organic framework molecularly imprinted polymer (Fe 3 O 4 @ZIF-8@SMIP) capable of selectively recognizing and detecting multiple fluoroquinolones (FQs). The Fe 3 O 4 @ZIF-8@SMIP material was synthesized using the “common” template-ofloxacin, identified by computational simulation, demonstrating notable adsorption capacity (88.61–212.93 mg g −1 ) and rapid mass-transfer features (equilibration time: 2–3 min) for all tested FQs, consistent with Langmuir adsorption model. Subsequently, this material was employed as a magnetic solid-phase-extraction adsorbent for adsorption and detection of multiple FQs by combining with high performance liquid chromatography. The developed method exhibited good linearity for various FQs within the concentration range of 0.1–500 μg L −1 , with low limit of detection (0.0605–0.1529 μg L −1 ) and limit of quantitation (0.2017–0.5097 μg L −1 ). Satisfactory recoveries (88.38–103.44%) were obtained when applied to spiked food samples, demonstrating the substantial potential of this Fe 3 O 4 @ZIF-8@SMIP material for rapid enrichment and identification for multiple FQs residues.
研究领域:
分析化学
·
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
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.
研究领域:
环境科学
·
生物分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
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.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yizhou Chen,Yuting Bai,Lijun Meng,Wenting Zhang,Jingjing Xia,Zhiming Xu,Rui Sun,Yan Lv,Tianxi Liu
Organic solvent nanofiltration (OSN), as an emerging membrane separation technology, holds great potential in pharmaceutical and chemical applications. However, the development of such a promising technology is severely retarded by the trade-off between permeability and selectivity. Herein, we report a novel thin-film nanocomposite (TFN) membrane by incorporating hollow metal-organic frameworks (MOFs) into the metal-phenolic network (MPN) selective layer for highly efficient OSN. This nanocomposite selective layer is fabricated via an aqueous deposition of tannic acid (TA) and Fe II ions with MOFs, during which the MOFs are in-situ etched to a hollow structure. Attributed to the extra transfer channels provided by hollow MOFs, the methanol permeance of the TFN membranes increases to 24.7 L·m -2 ·h -1 ·bar -1 , exhibiting an improvement of 270% compared with the membranes without MOFs (9.1 L·m -2 ·h -1 ·bar -1 ). Meanwhile, the coordination interaction between TA and metal centers in MOFs endows excellent interfacial compatibility between MPN matrix and MOF fillers, guaranteeing a defect-free selective layer and thus high rejection for small organic molecules (>99% for Alcian blue). Furthermore, various MOFs, including ZIF-67, prussian blue (PB), and MIL-53(Al), are also employed to fabricate MPN/MOF nanocomposite membranes, proving the availability and universality of this facial aqueous deposition strategy. Additionally, we also take deep insight into the mechanism of in-situ etching based on the density functional theory (DFT) calculation to pave the way for the fabrication of TFN membranes with other hollow nanofillers. This work provides a sufficient strategy for the design and construction of novel highly efficient OSN nanocomposite membranes with excellent permeability and retention performance.
研究领域:
材料科学
·
化学工程
·
分离技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Wendong Xing,Yilin Wu,Jian Lu,Chunxiang Li,Yongsheng Yan,Linli Xu
Two-dimensional (2D) materials-based membranes with artificial transfer channels have shown significant potential for selective separation. However, the challenges such as uncontrollable interlayer spacing and undesirable molecular sieving capabilities of 2D channels have impeded their further application in separation. Inspired by biological selectivity transport channels with proper steric and affinity sites, herein we have designed biomimetic 2D selective transport channels based on a ZIF-L nanosheet membrane. In this design, the UiO-66-NH 2 nanoparticles tune the appropriate interlayer confinement and compensate for laminate framework defects of 2D selectivity transport channels, the artificial imprinting recognition sites establishes the essential chemical environment for specific separation. As a result, the obtained MOFs nanosheet based membranes with imprinted recognition sites (MN-IMs) exhibited enhanced permeation flux ( J = 1.0847 × 10 −3 and 1.0423 × 10 −3 mg min −1 cm −2 ) and permselectivity ( α = 3.77 and 4.10), outperforming state-of-the-art similar technologies. Besides, the composite MOFs demonstrated good photoinduced self-recovery ability, which also enables MN-IMs to have long-lasting selective separation performance (the separation efficiency is 90.76 %) in the continuous separation process. This study introduces a novel design strategy for developing sophisticated 2D materials-based membranes and offers new insights into the precise separation of specific molecules.
研究领域:
材料科学
·
化学工程
·
分离技术
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 32
·11253-11263
·
IF 4.099
Yana Liu,Cheng Zhang,Chen Xu,Caixue Lin,Keke Sun,Jie Wang,Xueli Chen,Ling Li,Andrew K. Whittaker,Hai-Bing Xu
Using a facile one-step hydrothermal method, a series of metal–organic frameworks containing Gd/Tm (Gd/Tm-MOFs) were prepared successfully. Through the mutual activation of Gd3+ and Tm3+, Gd/Tm-MOFs showed unexpected excellent up-conversion luminescence (UCL) and a superior positive magnetic resonance image (MRI). Using doxorubicin hydrochloride (DOX) as a drug model, the feasibility of Gd/Tm-MOFs as a multifunctional drug carrier was demonstrated. Through modifying Gd/Tm-MOFs with uniform mesoporous silica (mSiO2) shells and folic acid (FA), the drug loading was improved up to 41.5 mg g−1, and pH responsive drug release increased to 64% from 12% by regulating the pH from 5.8 to 7.4. Also, the particles were tracked by MRI, and the second highest longitudinal relaxivity (r1) among the reported gadolinium complexes of 225.86 mM−1 s−1 was achieved. The cell imaging shows obvious blue and red luminescence under 980 nm laser excitation, and the up-conversion luminescence is unique because there is no autofluorescence from cells under 980 nm excitation. This indicates their promising application in the biological field. All the experiments indicate the promising application of Gd/Tm-MOFs in diagnosis and treatment.
研究领域:
材料科学
·
生物医学工程
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of CO2 Utilization
·
2022
·
IF 8.321
Chengyuan Duan,Yuming Xie,Meili Ding,Yi Feng,Jianfeng Yao
Integrating dual Lewis acid and base as well as rational hierarchical pore structure in one catalyst is favorable to significantly boost the CO 2 cycloaddition reaction at mild conditions. In this regard, carbonized melamine sponge (CMS) featuring a highly porous network, rich nitrogen doping and excellent photothermal capability is employed as the ideal host for the construction of CMS@MOFs (namely, MIL-88-NH 2 and ZIF-8-NH 2 ) composites with diverse acid-base properties. Results show that all the obtained composites exhibited a satisfactory CO 2 adsorbing capacity (33–54 cm 3 /g) and delivered a remarkable yield of target cyclic carbonate at either mild thermal conditions (0.1 MPa CO 2 and 80 o C) or under light irradiation (light intensity: ~350 mW/cm 2 ) at room temperature. Even with diluted CO 2 (15 vol. % CO 2 ), high yields of 80–82 % are achievable. Moreover, the used catalysts can be easily recycled from reaction systems, leading to a good recyclability .
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）