Materials Today Nano
·
2023
·
IF 10.3
Yindian Wang,Wenxin Qi,Zhihui Mao,Jiao Wang,Robert Chunhua Zhao,Hongxia Chen
Wound healing as a fundamental health problem involves complex and dynamic biological processes. Multifunctional dressings that meet the needs of different wound stages can exert synergistic effects throughout the whole-process healing. In this work, inspired by the behavior of spider hunting, reduced polydopamine nanoparticles (rPDA) doped copper-based metal-organic frameworks (Cu-MOF)-hydrogel (GEL-MOF-rPDA) was prepared with anti-infection and promotion of whole-process wound healing. Schiff base cross-linking of dodecyl chitosan -oxidized sodium alginate was used as a biocompatible hydrogel substrate for hemostasis during wound healing and for steric fixation of bacteria during synergistic antibacterial processes. The dodecyl tail can be inserted and fixed on the lipid bilayer of the cell membrane while achieving bacterial capture, blood cell fixation, and skin cell fixation. Cu-MOF and rPDAs played in the hydrogel destroyed the outer membrane of bacteria and release 1O 2 and Cu 2+ . The composite hydrogel had shown an excellent synergistic antibacterial effect with a 99.9% antibacterial rate. Furthermore, the mechanism of promoting whole-process wound healing was analyzed using an infected rat full-thickness skin defect model. The wound closure rate of the composite hydrogel treated wound was found as 92% at ten days. The bio-inspired synergistic antibacterial hydrogel solves the limitation of single-functional hydrogel in promoting whole-process wound healing through initial hemostasis, mid-term anti-infection and anti-inflammatory, late-stage anti-oxidation and promoting angiogenesis and granulation tissue formation. This biomimetic hydrogel paves the way for the design of multifunctional hydrogels and has good potential value in clinical applications.
研究领域:
生物材料学
·
医学
·
药剂学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Peini Li,Yiqing Deng,Wangcai Zou,Zhenqiao Ma,Xiandi Yang,Qiang Zhao
As living standards improve, the demand for food freshness has gradually increased. Multifunctional packaging materials that monitor food freshness in real-time, delay spoilage, and are environmentally friendly have emerged as ideal solutions. This study synthesized an ammonia-sensitive copper-based metal-organic framework (Cu-MOF) and incorporated it into a matrix composed of chitosan (CS) and gelatin (Gel). The resulting film exhibits ammonia-sensitive color-changing properties, antibacterial activity, and excellent biodegradability. The effects of Cu-MOF incorporation on the structural, physical, and functional properties of the CS/Gel films were systematically evaluated. Results demonstrated that the Cu-MOF was uniformly distributed within the CS/Gel matrix, significantly enhancing the mechanical properties (tensile strength increased by 68.49%), oxygen/water vapor barrier properties, and UV-blocking capability of the films. Notably, the CS/Gel@Cu-MOF films exhibited excellent antibacterial performance, with sterilization rates of 94.2% against Escherichia coli and 99.6% against Staphylococcus aureus . Additionally, the films showed good biocompatibility, biodegradability, and a sensitive color response to ammonia. The films were successfully used to monitor shrimp freshness through color change, transitioning from light green to brown as spoilage occurred. These findings indicate that CS/Gel@Cu-MOF films have significant potential for real-time visual freshness monitoring in food packaging, contributing to reduced food safety risks and waste.
研究领域:
材料科学
·
食品安全
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
Green Chemical Engineering
·
2022
·
IF 0
Shao-Min Wang,Qing-Yuan Yang
Natural gas processing involves the separation of higher hydrocarbons (C2–C3) from methane, which is an important and energy-intensive operation. In this paper, we present a comprehensive study of an innovative copper-based MOF (Cu-MOF) for the separation of propane and ethane from methane. The material exhibits a high adsorption capacity and selectivity for C2–C3 hydrocarbons over methane, which is primarily due to its preferential C2–C3 hydrocarbon adsorption. The adsorption isotherms at ambient conditions showed a remarkable uptake of C 3 H 8 of 134.0 cm 3 /g, as well as excellent selectivity of 204 and 9 for C 3 H 8 /CH 4 and C 2 H 6 /CH 4 . According to the theoretical calculations, differences in van der Waals interactions and polarizability of the guest molecules were responsible for influencing separation performance. In addition, we conducted adsorption kinetic experiments, dynamic breakthrough, and cycling experiments to further examine the separation performance. Overall, this research establishes an energy-efficient adsorbent for upgrading natural gas.
研究领域:
材料科学
·
能源工程
·
化学工程
✓ 已验证
DOI
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Miao Sun,Xiao Xu,Shihao Min,Jiaxin He,Kun Li,Longtian Kang
Copper-based metal-organic framework (Cu-MOF) materials with multiple active sites have attracted increasing attention to the electrocatalytic CO 2 reduction reaction (ECR), however, face the huge challenge owing to the poor stability and low C 2 selectivity. Here, the Cu 2 O/Cu-CuTCPP heterojunction (Cu 2 O/CPFs) with three Cu active sites are firstly constructed through in-situ electrodeposition method. The effect of CuSO 4 concentration and electrodeposition conditions on ECR is systematically investigated. The optimized Cu 2 O/CPFs composite achieves the ethylene Faraday efficiency (FE C2H4 ) of 61.8 % at –1.3 V vs. RHE, which is 1.9 and 3.42 times higher than those of CPFs and Cu 2 O, respectively. Meanwhile, the C 2 H 4 partial current density ( j C2H4 ) of –7.96 mA·cm −2 is 2.91 and 4.68 times higher than those of CPFs and Cu 2 O. Further experiments reveals that the formation of Cu 2+ –O–Cu + –O bond between Cu 2 O and Cu–O 4 sites in Cu 2 O/CPF heterojunction is crucial. Consequently, the hydrogen (H 2 ), formic acid (HCOOH) and methane (CH 4 ) evolution reactions are restricted, the C–C coupling reaction of *CHO and *CO intermediates is significantly enhanced, and the Cu–O 4 sites in CPFs are protected. This work provides an effective strategy to stabilize MOF structure and obtain high value-added C 2+ products.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Qin Gao,Yanfang Zhao,Lihua Lu,Lei Han,Lubin Xu
Glyphosate (Gly), a widely used potent herbicide worldwide, possess potential harm to human health and environment due to accumulation in water and soil. Hence, there is a pressing need to realize the simple and precise detection of Gly to ensure human health and environmental safety. Although various nanozyme-based detection methods have been developed for Gly, they frequently require additional enzymes and hydrogen peroxide (H 2 O 2 ). H 2 O 2 not only exhibits certain toxicity but is also prone to decomposition, resulting in poor accuracy and reproducibility. In this study, we report the synthesis of nanoscale copper-based metal-organic framework (Cu-MOF) through a facile ultrasound method, and the resulting Cu-MOF demonstrate excellent laccase-mimicking activity. Our Cu-MOF nanozyme can catalyze the conversion of substrates into chromogenic products without the need for H 2 O 2 , offering a simple and mild operational approach. The presence of Gly significantly inhibits the catalytic activity of the Cu-MOF, hindering the chromogenic reaction between 2,4-dichlorophenol (2,4-DP) and 4-aminoantipyrine (4-AP). We propose a detection method for Gly that is repeatable, reliable, highly selective, and cost-effective, eliminating the need for additional H 2 O 2 , or bioenzymes. This facile strategy paves a new path for the applications of laccase-mimicking nanozyme in environmental monitoring.
研究领域:
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Huizhi Wu,Qian Geng,Yonghan Li,Yuqian Song,Jiaqi Chu,Rong Zhou,Xin Ning,Senjie Dong,Ding Yuan
Here, a multifunctional poly (lactic acid)/copper-based metal–organic framework (PLA/CuMOF) degradable composite membrane featuring superior antibacterial and self-cleaning properties was fabricated via a simple electrospinning process for high- efficiency filtration/separation. Benefiting from the decrease of fiber diameter, the improved surface roughness and the surface charge of CuMOF, PLA/CuMOF fibrous membrane achieved excellent capture ability for ultra-fine particles and superb purification capability for real PM 2.5 smoke. The differences of filtration capacity between PLA membrane and PLA/CuMOF membrane was further explored using analogue simulation with dynamic particle capture and airflow field distribution. Impressively, PLA/CuMOF fibrous membrane combines robust self-cleaning ability, effective antibacterial effect, and thermal management capability. Moreover, owing to the special selective wettability and chemical stability, PLA/CuMOF membrane possessed the stable oil–water separation performance under harsh environment (e.g., high acid, alkali, and salt). This degradable multifunctional filtration/separation fibrous membrane emerges a broad application prospect ranging from environmental governance, industrial security to personal protection.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xinrui Li,Gaoshan Xing,Qian Yang,Jianfeng Zhou,Guorui Yao,Liqiang Qi
Currently, the desulfurization agents employed in dry desulfurization technology face challenges such as slow reaction rates and low desulfurization efficiency. This study integrates phosphotungstic acid(HPW) into Cu-based Metal-organic framework(Cu-MOFs) using a hydrothermal synthesis method, enhancing the performance of the desulfurization agent through a combination of catalytic oxidation and adsorption. Experimental results indicate that optimal desulfurization effects are achieved when the ratio of Copper nitrate trihydrate (Cu(NO 3 ) 2 ) to 1, 3-phenyltrifamilic acid (H 3 BTC) is 2:1, with an HPW addition of 1.2 wt%, and a hydrothermal synthesis duration of 24 hours. In a fixed bed desulfurization system, HPW-2@Cu-MOF demonstrates the best performance at a reaction temperature of 200℃, achieving a sulfur dioxide removal efficiency nearing 100 %, a specific surface area of 612.20 m 2 /g, a pore volume of 0.2568 cm 3 /g, and a sulfur capacity of 90.464 mg/g. The incorporation of HPW facilitates the conversion of sulfur dioxide (SO 2 ) to sulfur trioxide (SO 3 ) under the influence of surface oxygen (O α , O β ), resulting in a 10.52 % increase in SO 3 content compared with Cu-MOFs. When the flue gas contains a certain concentration of carbon dioxide, HPW-2@Cu-MOF preferentially reacts with SO 2 due to the adsorption between Cu 2+ and SO 2 . X-ray photoelectron spectroscopy (XPS) characterization reveal that W 5+ serves as the active center in HPW, the content of W 5+ in HPW-2@Cu-MOF was higher than others, accounting for 90.6 %. Thermo Gravimetric Analysis clearly demonstrates that the thermal stability of Cu-MOFs loaded with HPW has been significantly enhanced.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 5
·1-14
·
IF 3.8
Zhou Rui,Zou Congyang,Wang Yong,Zhou Zhuyou,Liu Menghe,Ji Yufeng
One 3D Cu-based metal–organic frameworks (Cu-MOFs) was prepared by hydrothermal method as a catalyst for activating persulfate to degrade tetracycline. The degradation efficiency of TC was investigated under various conditions including catalyst dosage, pH, and persulfate concentration. The effects of these factors on the degradation efficiency were examined and discussed in detail. Cu-MOFs/PS catalytic systems can degrade 96% of TC under suitable conditions. The quenching experiments showed that there are both free radical and non-free radical pathways in TC degradation, with singlet-line substitution of oxygen playing a major role. The stability of the material structure was explored through cyclic experiments. The degradation pathway of TC was investigated through the analysis of intermediate products. Additionally, the toxicity of these intermediate products was evaluated using toxicity analysis software.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2015
·Vol. 182
·期 13
·2313-2320
·
IF 3.741
Xu Yan,Jin Jingjie,Li Xianliang,Han Yide,Meng Hao,Song Chaosheng,Zhang Xia
We describe a facile method for the preparation of magnetic microparticles consisting of a metal-organic framework (MOF) of Cu(II)-BTC (BTC = 1,3,5-benzenetricarboxylate) for rapid magnetic solid-phase extraction (MSPE) of the dye Congo Red (CR) from aqueous solution. Magnetization of the MOF and solid-phase extraction of CR was simultaneously accomplished by mixing, under ultrasonication, the MOF and silica-coated magnetite microparticles in the solution to be extracted. Under optimized conditions, the magnetic MOF hybrid exhibits a fast adsorption rate and a high removal efficiency (>97 %) toward CR even over 15-fold reuse, which also features high adsorption capacity of 97.7 and 92.5 % for cationinc Methylene Blue (MB) and Crystal Violet (CV), respectively. The desorption of CR from the magnetic MOF was realized by washing it with ethanol and water. The material is considered to be a promising new adsorbent for use in wastewater treatment and in analytical preconcentration.
We report on a method for magnetization of a Cu-BTC metal-organic framework for use in rapid magnetic solid phase extraction of Congo Red from aqueous solutions. The material maintains its high removal efficiency (of >97 %) over 15 recyclable experiments.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jihan Lu,Xuanting He,Boyu Li,Shuang Meng,Zhuo Li
Developing multifunctional and super-wetting separation materials is of great significance for treating complex oily wastewater in real environment. Herein, the superhydrophilic Cu-HHTP@Cu foam with hierarchical structure was fabricated by chemical oxidation and in situ growth strategies, which showed an outstanding separation efficiency (>99.4 %) and flux (>92.1 kL∙m −2 ∙h −1 ) for various oil/water mixtures. The electrostatic attraction, π − π interactions and hydrogen bonding between Cu-HHTP@Cu foam and dyes facilitate the adsorption process, with a removal efficiency > 94.7 %. To absorb high-viscosity crude oil, the Cu-HHTP@Cu foam was further modified with polydimethylsiloxane (PDMS) to finally obtain superhydrophobic PDMS@Cu-HHTP@Cu foam, which demonstrates high separation efficiency (>99.8 %) and flux (>90.3 kL∙m −2 ∙h −1 ). Both Cu-HHTP@Cu foam and PDMS@Cu-HHTP@Cu foam also showed stable durability after 20-cycle tests. More importantly, due to the introduction of Cu-HHTP, PDMS@Cu-HHTP@Cu foam presented excellent photothermal conversion behavior with the surface temperature reaching up to 72.0℃ under simulated sunlight, which remarkably facilitate the cleaning of crude oil. This work shows that modified Cu foam is a promising candidate for absorbing dyes and treating crude oil spills and is expected to provide a convenient method for oil/water separation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2018
·Vol. 65
·期 6
·743-749
·
IF 0.862
Jun Li,Jianfei Xia,Feifei Zhang,Zonghua Wang,Qingyun Liu
A glassy carbon electrode (GCE) modified with a copper-based metal-organic framework (MOF) [HKUST-1, HKUST-1 = Cu 3 (BTC) 2 (BTC = 1,3,5-benzenetricarboxylicacid)] was developed as a highly sensitive and simple electrochemical sensor for the determination of dopamine (DA). The MOF was prepared by a hydrothermal process, and the morphology and crystal phase of the MOF were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. Meanwhile, the electrochemical performance was investigated using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Under optimized conditions, the modified electrode showed excellent electrocatalytic activity and high selectivity toward DA. The linear response range was from 5.0 × 10 −7 to 1.0 × 10 −4 M and the detection limit was as low as 1.5 × 10 −7 M. Moreover, the electrochemical sensor was used to detect DA in real samples with excellent results. MOF-based sensors hold great promise for routine sensing applications in the field of electrochemical sensing.
研究领域:
分析化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2019
·Vol. 11
·期 34
·4382-4389
·
IF 2.378
Fanglin Ming,Jingzhou Hou,Danqun Huo,Jun Zhou,Mei Yang,Caihong Shen,Suyi Zhang,Changjun Hou
A luminescent amino-functionalized metal–organic framework (Cu–MOFs) was synthesized from 2-aminoterephthalic acid and Cu(II) ions by a solvothermal method. Cu–MOFs displayed blue fluorescence with a peak at 430 nm under 330 nm excitation. Its structure was characterized by FTIR, TEM, XRD, and XPS. The fluorescence of the Cu–MOFs was quenched by Fe3+ in aqueous solutions. The limit of detection was 0.5 μM, and the linear working range extended from 2 μM to 35 μM. Additionally, a good logarithmic relationship between relative fluorescence intensity (F/F0) and Fe3+ concentrations ranging from 2 to 180 μM was obtained with a detection limit of 1.56 μM (R2 = 0.9975). No clear interference was observed when challenged with a wide variety of cations and anions. The recoveries from spiked real water samples were in the range of 91.7–107.7%, and the detection results were consistent with inductively coupled plasma mass spectrometry (ICP-MS) results. Therefore, the fluorescent sensor has great potential in environmental monitoring.
研究领域:
材料科学
·
分析化学
·
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）