COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Yinchun Hu,Hui Yang,Renhu Wang,Menglan Duan
MOF-5 was prepared by hydrothermal method and Ag@MOF-5 nanoplates were obtained to improve the antibacterial activity and dispersion of Ag nanoparticles . MOF-5 and Ag@MOF-5 were characterized by scanning electron microscope (SEM), high-resolution transmission electron microscope and energy spectrum (HR-TEM&EDS), X-ray diffraction (XRD), infrared spectrum (FTIR) and thermal gravimetric analysis (TGA). MOF-5 was flaky crystals accumulated and complexed to form cube-like crystalline particles with the size of 20–50 micrometers, and it was destroyed in the process of loading nano-silver particles. Ag@MOF-5 nanoplates were nanoscale sheets, and 3–5 nm Ag nanoparticles were uniformly dispersed and loaded on nanoplates of MOF-5. The content of silver nanoparticles reached 13 wt% of Ag@MOF-5 total weight. The results of antibacterial experiment indicated that antibacterial ability of MOF-5 was limited, while Ag@MOF-5 showed good antibacterial ability to Escherichia coli and Staphylococcus aureus.
研究领域:
材料科学
·
微生物学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Shimin Sun,Qing Yulan Li,Li Cai,Jun Qi,Zhongbo Li,Zuju Shu,Lijun Zhang
The short shelf life of fresh pork, primarily caused by microbial contamination and lipid oxidation, remains a challenge for the food industry. To address this, we developed a novel active packaging composite film by coating a functionalized layer of carboxymethyl chitosan/tannic acid embedded with silver-based metal–organic frameworks (CTA) onto polyethylene (PE). The resulting PE/CTA films exhibited superior tensile strength (18.16 MPa), exceptional UV adsorption capacity (>98 %), enhanced barrier properties (against oxygen, moisture), and potent antibacterial/antioxidant activities. Notably, the optimized PE/CTA-8 film effectively extended the shelf life of fresh pork by 6 days compared to pure PE, as evidenced by significantly reduced weight loss, total viable count (TVC), pH, total volatile basic nitrogen (TVB-N), and thiobarbituric acid reactive substances (TBARS) values. This work presents a promising strategy for developing high-performance food packaging materials with significant commercial potential.
研究领域:
食品科学技术
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材料科学
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高分子化学
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活性包装
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食品保鲜
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Meng Zhang,Guohui Wang,Dong Wang,Yuqi Zheng,Yanxin Li,Wenqiao Meng,Xin Zhang,Feifan Du,Shaoxiang Lee
In this paper, Ag-Metal−organic framework loaded chitosan nanoparticles (0.1%Ag@MOF/1.5%CSNPs) and polyvinyl alcohol/sodium alginate/chitosan (PACS) were used as the upper and lower layers to successfully prepare a bilayer composite dressing for wound healing. The performance of bilayer dressing was evaluated. The lower layer (PACS) had uniform pore size distribution , good water retention, swelling, water vapor permeability, and biocompatibility while PACS had almost no antibacterial activity . The upper layer (Ag@MOF/CSNPs) possessed excellent antibacterial activity and poor biocompatibility. As the upper layer, it can avoid direct contact with the skin and inhibit microbial invasion. In addition, the bilayer can adhere to a large number of red blood cells and platelets, promoting blood coagulation and cell proliferation . Ag@MOF, CSNPs, Ag@MOF/CSNPs and bilayer showed antibacterial activity in ascending order, due to the synergistic antibacterial action of the upper and lower layer. In vivo evaluation showed that both bilayer and PACS could significantly accelerate the wound healing, and the bilayer dressing showed more complete re-epithelialization with less inflammatory cells. In summary, this new bilayer composite is an ideal dressing for accelerating wound healing.
研究领域:
生物材料学
·
医学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Ye Zhang,Jian Song,Fusheng Pan,Ying Li,Junyi Zhao,Siqi Wang,Yitong Huang,Yue Li,Zhongyi Jiang
Mimicking the efficient facilitated transport features of carrier proteins in cytomembranes, constructing facilitated transport pathways in synthetic membranes to achieve the desired performance for task-specific molecules has become attractive. Herein, heterostructured laminates (UGO) were created through in-situ growth of amine-functionalized zirconium-based metal-organic frameworks (UiO) on graphene oxide (GO) nanosheets, and subsequently used as supports to immobilize Ag + . The as-prepared Ag + @UGO were incorporated into poly (ether-block-amide) (Pebax) matrix to fabricate facilitated transport membranes for pervaporative desulfurization. Densely packed UiO on GO nanosheets increase the inter-particles connectivity of the molecular transport channels and reduce the mass transport resistance, intensifying the permeability. Meanwhile, the uniform immobilization of Ag + can reversibly interact with thiophene via π-complexation reaction and form continuous facilitated transport pathways, significantly enhancing the selectivity. Accordingly, the resultant membrane acquires separation performance with an optimum permeation flux of 23.40 kg/(m 2 h) and enrichment factor of 7.12, achieving 52% and 57% higher than the pristine membrane. This study extends strategies to design high-performance hybrid membranes with facilitated transport mechanism through the well-designed heterostructures as supports to immobilize carriers for molecular separations.
研究领域:
材料科学
·
化学工程
·
膜技术
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DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Asmat Ullah,Gang Dong,Yasir Javed,Anosha Anwer,Dongsheng Geng
The Cu-based catalyst used for electrochemical CO 2 reduction reaction (CO 2 RR) is a capable approach to reducing greenhouse carbon emissions and producing high value-added multi-carbon (C2 + ) products. Unfortunately, the selectivity of the (C2 + ) products is still quite low. Therefore, it is imperative to develop persuasive electrocatalysts to facilitate the conversion of carbon dioxide into valuable chemical products. Here, we design a CuO Nanosheets catalyst with the phase composition of silver (Ag) and Ag metal–organic framework (Ag-MOF) by using the hydrothermal approach. A maximum ethylene faradaic efficiency (FE) of Ag-MOF/CuO NS is achieved as 45.72 % at −1.1 V (vs RHE), while those CuO NS and Ag/CuO NS show 31 % and 14.24 % respectively. Interestingly, the restructured porous nature of Ag-MOF doped CuO NS electrocatalyst is equipped with a high surface area with strong adsorption capacity of CO 2 and increases the oxygen vacancies abundance with high active sites for selective electrocatalysis activity based on as produced Ag-MOF on CuO surface. This indicates that, in heterostructured catalysts, the coordination between CuO and free carboxyl groups considerably can enhance the dimerization of *CO intermediates and provide a strong coordination environment to the Cu valence state with MOF for the selective electrocatalytic CO 2 reduction. Thereby, the reaction pathway is shifted from two electrons to a multi-electron by constructing the oxygen vacancies for the production of multi-carbon products.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 16
·2812
·
IF 4.329
Meng Zhang,Dong Wang,Nana Ji,Shaoxiang Lee,Guohui Wang,Yuqi Zheng,Xin Zhang,Lin Yang,Zhiwei Qin,Yang Yang
Due to the spread of drug-resistant bacteria in hospitals, the development of antibacterial dressings has become a strategy to control wound infections caused by bacteria. Here, we reported a green strategy for in situ biomimetic syntheses of silver nanoparticles@organic frameworks/graphene oxide (Ag@MOF–GO) in sericin/chitosan/polyvinyl alcohol hydrogel. Ag@MOF–GO was synthesized in situ from the redox properties of tyrosine residues in silk sericin without additional chemicals, similar to a biomineralization process. The sericin/chitosan/Ag@MOF–GO dressing possessed a high porosity, good water retention, and a swelling ratio. The hemolysis rate of the composite was 3.9% and the cell viability rate was 131.2%, which indicated the hydrogel possessed good biocompatibility. The composite also showed excellent lasting antibacterial properties against drug-sensitive and drug-resistant pathogenic bacteria. The composite possessed excellent hemostatic activity. The coagulation effect of the composite may be related to its effect on the red blood cells and platelets, but it has nothing to do with the activation of coagulation factors. An in vitro cell migration assay confirmed and an in vivo evaluation of mice indicated that the composite could accelerate wound healing and re-epithelialization. In summary, the composite material is an ideal dressing for accelerating hemostasis, preventing bacterial infection, and promoting wound healing.Keywords:biomimetic synthesis;hemostasis;antibacterial activity;wound healing
研究领域:
生物材料学
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医学
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纳米生物学
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产品关联
DOI
PubMed
高影响因子
Foods
·
2026
·Vol. 15
·期 3
·479
·
IF 5.1
Baizhi Cen,Juge Liu,Mengyuan Tan,Bo Wang,Lu Gao,Zhenquan Yang,Genxi Zhang,Tao Zhang,Xuechao Xu
In this study, a silver-based metal–organic framework (Ag-MOF) nanozyme was synthesized for the synergistic eradication of drug-resistantSalmonellaenteritidisin food matrices. Ag-MOF exhibits multiple enzyme-like activities, namely oxidase (OXD)-, peroxidase (POD)-, and superoxide dismutase (SOD)-like activities. It demonstrated excellent antibacterial and antibiofilm activities against erythromycin- and chloramphenicol-resistantS. enteritidisstrains (N29 and P23). Specifically, treatment with 20 mg mL−1Ag-MOF resulted in nearly complete eradication ofS. enteritidisin in vitro suspension assays, including 1 × 107CFU mL−1N29 strain and 6 × 106CFU mL−1P23 strain. Moreover, treatment with 1 mg mL−1Ag-MOF led to 80~90% biofilm inhibition ofS. enteritidis. Mechanistic investigations revealed that Ag-MOF effectively interacted with amino-rich structures on the bacterial surface (such as membrane proteins and peptidoglycan components), generated abundant reactive oxygen species (ROS), released Ag+ions, and depleted intracellular glutathione, which collectively disrupted cell membrane integrity and induced severe leakage of intracellular proteins and nucleic acids. Importantly, Ag-MOF maintained high antibacterial efficacy in complex simulated food matrices (pork, milk, and egg shell). Overall, this study offers key insights into enzyme-mimicking antibacterial materials and a promising strategy to combat multidrug resistant foodborne pathogens.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiang Wang,Mengxi Bai,Qiufen Li,Dongze Li,Xiaoyan Lin,Siyuan Shao,Yanting Zhou,Donghui Cai,Yingxin Wu,Ziqi Wang
The increasing demand for high-energy–density batteries has driven intensive research into lithium metal batteries (LMBs) as promising alternatives to conventional lithium-ion batteries. Despite their ultrahigh theoretical capacity, lithium metal anodes (LMAs) suffer from uncontrolled dendrite growth, leading to safety hazards and irreversible capacity loss. Herein, we develop a functional separator based on a composite of Ag nanoparticles (NPs) and metal–organic frameworks (MOFs) to enhance LMA stability. The –NH 2 groups in MOFs promote Li + desolvation and transport, while Ag NPs induce the in-situ formation of a Li-Ag alloy interphase, effectively suppressing dendrite growth and improving interfacial lithiophilicity. As a result, the reversibility and Li plating/stripping kinetics of LMAs are significantly enhanced. The Li symmetric cells exhibit an ultralong lifespan of 2000 h at 0.2 mA cm −2 and 1000 h at 0.5 mA cm −2 . Moreover, the Li||LiFePO 4 full cell retains 93.3 % of its initial capacity after 2000 cycles at 1C and maintains 45 mAh g −1 even at an ultra-high rate of 15C.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 9
·1-10
·
IF 5.3
Zhai Xiurong,Li Qian,Cao Yang,Han Mengjie,Sun Hailian,Du Lelin,Yang Xiyun,Wei Yuxin,Yu Congcong
An electrochemical platform for signal amplification probing chloride ions (Cl − ) is constructed by the composite integrating core–shell structured nitrogen-doped porous carbon@Ag-based metal–organic frameworks (NC@Ag-MOF) with polypyrrole (PPy). It is based on the signal of solid-state AgCl derived from Ag-MOF, since both NC and PPy have good electrical conductivity and promote the electron transport capacity of solid-state AgCl. NC@Ag-MOF was firstly synthesized with NC as the scaffold and then, PPy was anchored on NC@Ag-MOF by chemical polymerization. The composite NC@Ag-MOF-PPy was utilized to modify the electrode, which exhibited a higher peak current and lower peak potential during Ag oxidation compared with those of Ag-MOF and NC@Ag-MOF-modified electrodes. More importantly, in the coexistence of chloride (Cl − ) ions in solution, the NC@Ag-MOF-PPy-modified electrode displayed a fairly stable and sharp peak of solid-state AgCl with the peak potentials gradually approaching zero, which might effectively overcome the background interference caused by electroactive substances. The oxidation peak currents of solid-state AgCl increased linearly with the concentration of Cl − ions in a broad range of 0.15 µM–40 mM and 40–250 mM, with detection limits of 0.10 µM and 40 mM, respectively. The practical applicability for Cl − ions determination was demonstrated using human serum and urine samples. The results suggest that NC@Ag-MOF-PPy composite could be a promising candidate for the construction of the electrochemical sensor.
研究领域:
材料科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Zhao Ziyu,Shan Xueling,Wu Yuqi,Jiang Ding,Wang Wenchang,Du Xiaojiao,Chen Zhidong
The residue of chloramphenicol (CAP) in animal-derived foods and the environment poses a serious threat to human health, highlighting the urgent need for sensitive, selective, and rapid detection methods. In this study, a novel electrochemiluminescence resonance energy transfer (ECL-RET)-based sensing platform was developed for the ultrasensitive detection of CAP, employing a Tb-PTC/Ag MOF composite as the energy donor and hollow ZIF-8@polydopamine (ZIF-8@PDA) as the energy acceptor. Coordination of Tb 3+ with PTCA ligands within the MOF framework effectively suppressed aggregation-induced quenching, while the incorporation of Ag MOF further enhanced and stabilized the ECL intensity through synergistic effects. Efficient ECL-RET was achieved owing to the spectral overlap between the UV-vis absorption of the acceptor and the ECL emission of the donor, with a high energy transfer efficiency of 75.1%, significantly improving the sensitivity of the sensor. The proposed platform exhibited a wide linear range from 10 −5 to 10 −15 mol L −1 for CAP detection, with an exceptionally low detection limit of 1.57 × 10 −15 mol L −1 . By integrating the structural advantages of MOFs with the high sensitivity of the ECL-RET strategy, this work establishes a robust and promising platform for trace-level CAP monitoring in environmental and food samples. Graphical abstract
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DOI
PubMed
高影响因子
npj Science of Food
·
2025
·Vol. 9
·期 1
·1-8
·
IF 7.8
Pan Hui,Zhang Wei,Jin Meng,Zhang Fang,Chen Xuelei,Meng Xiao,Shao Hua,Song Liqun,Zhang Zhihu,Wang Cuijuan
Concerns over health risks associated with mixed pesticide residues have led to a demand for rapid analytical methods. We present a portable surface-enhanced Raman spectroscopy (SERS) device specifically designed for real-time monitoring of indoxacarb (INDX) and chlorfenapyr (CFP) in vegetable juice. This point-of-use sensor integrates silver nanoparticles with a metal-organic framework (Ag/MOF-808(Zr)) and employs a 19-well quartz plate alongside a portable Raman spectroscopy instrument, facilitating simultaneous adsorption, separation, and detection. Detection limits for INDX and CFP in ginger and spinach juices were 0.26–0.76 ppb. Notably, results closely matched those from liquid chromatography, and in-situ detection was achieved within 2 min without pre-treatment, significantly enhancing efficiency over conventional chromatographic methods. This innovative approach demonstrates substantial potential for detecting pesticide mixtures in non-laboratory settings, presenting a valuable option for point-of-use applications.
研究领域:
分析化学
·
食品安全
·
环境监测
·
纳米技术
·
光谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 34
·16022-16029
·
IF 3.3
Xingguo Deng,Jingchao Li,Bo Zhao,Zhihua Li
In this study, a silver metal–organic framework (Ag-MOF) was immobilized on graphene oxide (GO) sheets via an ultrasonication process. The Ag-MOF@GO composite showed enhanced physicochemical properties, including an improved surface area and lower agglomeration, as confirmed using characterization techniques such as X-ray diffraction (XRD), the Brunauer–Emmett–Teller (BET) method, and scanning electron microscopy (SEM). Malachite green (MG) is a typical cationic dye, which can be toxic, cause environmental damage and threaten human health. Therefore, the adsorption capacities of Ag-MOF and Ag-MOF@GO for the MG dye were also evaluated at room temperature. Kinetic analysis revealed a significant increase in the adsorption capacity and rate of adsorption of Ag-MOF@GO compared with Ag-MOF. The addition of GO increases the surface area of Ag-MOF@GO and reduces the agglomeration effect, resulting in an improved adsorption capacity. Ag-MOF@GO showed a greater than 90% regenerability after three cycles.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）