APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Xianda Han,Zhigang Yu,Yangkejia Xiang,Fengqin Li,Xiaoping Tan,Lan Xu,Guiling Zhang
An electrochemical fabrication method of Ru[bpy] 3 2+ @Cu-MOF(-SH)/Au (MOF = metal–organic framework) was developed with a photo/electrochemical information characterization and a DNA-based biosensing validation for the proposed interface. Applying an anodic synthesis method, a modification layer of Ru[bpy] 3 2+ encapsulated with MOF was formed on the Au electrode surface to fabricate an interface with photo/electrochemical dual-signal response. Combining the scanning electrochemical microscopy (SECM) imaging technology with electrochemical and electrochemiluminescence (ECL) detection, the information about the interfacial photo/electrochemical bi-functional properties was explored from three aspects of the parameter variable, intensity variable, and morphology variable. The results show that the effect of parameter variables on the interfacial response follows an “interference effect” mechanism. Under the optimized conditions, the background and the saturation ECL intensities are 610.0 and 24.0 with a quenching efficiency of 96.1% and a detection limit of 30 fM. The saturation current is 48.8 µA with a detection limit of 330.0 nM. Both ECL and electrochemical imaging methods can corroborate each other, validating the logical correlation between the interface fabrication and the response performance in the regional interfacial distribution and laying a methodological foundation for evaluating the interface fabrication quality based on imaging morphology qualitatively. The proposed interface can construct photo/electrochemical dual-signal DNA-based biosensors.
研究领域:
分析化学
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生物医学工程
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材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Hongai Zheng,Yao Zhou,Derui Wang,Meilin Zhu,Xin Sun,Shuangyan Jiang,Yankun Fan,Daquan Zhang,Lizhi Zhang
Catalytic membrane reactors (CMR) based on the sulfate-based advanced oxidation processes (SR-AOPs) have exhibited fantastic applications prospects in water treatment. We synthesized Cu-MOF-74 by an environmentally friendly and facile method, then used it as PVDF (polyvinylidene fluoride) membrane surface modification layer. The results presented that Cu-MOF-74 can significantly improve anti-fouling ability of PVDF membrane (60.9% and 64.1% anti-adsorption of dye and protein). The modified membranes exhibited relatively low flux loss. Simultaneously the modified membrane catalyzed peroxymonosulfate (PMS) to achieve 97.1% degradation efficiency of Rhodamine B (RhB) within 60 min and 90.2% dye penetration recovery within 30 min. Cu-MOF-74 exhibited greater catalytic activity than homogeneous Cu (II) and showed a wide range of pH adaptation. Finally, XPS and ESR proved that it was the redox of Cu (II)/Cu (I) in the Cu-MOF-74 structure making PMS mainly produce SO 4 - • and •OH to oxidize pollutant molecules. The modus proposed in this study may provide a more promising strategy for the preparation of high-efficiency catalytic membranes and their practical applications in wastewater treatment processes .
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 48
·5851-5858
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IF 2.896
Yan Guan,Xiao-Lan Zhao,Qiu-Xia Li,Long Huang,Jian-Mei Yang,Tong Yang,Yun-Hui Yang,Rong Hu
In this paper, a novel colorimetric strategy based on iodide ion (I−) and Cu-MOF catalysis was developed for simple, low-cost, and naked-eye detection of Fe3+. Both I− and MOFs display catalytic activity toward peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB). Adsorption and embedding of I− in Cu-MOF generates Cu-MOF/I with a three-dimensional porous structure that exhibits higher specific surface area, providing more active sites to facilitate interaction with TMB, resulting in enhanced catalytic efficiency. Reports have shown that Fe3+ can oxidize TMB in the absence of H2O2. We found that as Fe3+ concentration increases, the color of the system gradually deepens and the UV absorption peak gradually increases, thus providing a colorimetric sensor for quantitative Fe3+ detection. The detection limit (LOD) obtained in the presence of I− is 200 nM; however, in the absence of I−, the LOD is approx. 10 μM. Thus, the sensing system is ideal for signal amplified analysis of Fe3+. In the presence of various interfering metal ions, the developed sensing system displays excellent selectivity. Additionally, the practical application to Fe3+ detection in real samples is explored.
研究领域:
分析化学
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材料科学
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纳米技术
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环境科学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2019
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IF 1.795
Tursunjan Aydan,Chao Yang,Yang Xu,Tongtong Yuan,Min Zhang,Hui Li,Xueming Liu,Xintai Su,Jide Wang
A Hybrid magnetic composite material Fe 3 O 4 @Cu x O y /C (where, x = 1–2; y = 0–1) was prepared via pyrolysis of FeOOH decorated Cu 3 (BTC) 2 (where, BTC = 1, 3, 5-benzenetricarboxylic acid) as a precursor. The obtained products was successfully applied to reduction reaction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as a catalyst. Compared with other reported materials, Fe 3 O 4 @Cu x O y /C exhibits high catalytic activity with excellent recyclability.
研究领域:
材料科学
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催化
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纳米技术
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Feiyang Cheng,Xiangfeng Zhu,Fucheng Yun,Mengting Wei,Chen Shi,Jian Han
As one of the most widely utilized polymer coating systems, polyvinyl chloride (PVC) is extensively applied in industrial protection fields due to its excellent processability and cost efficiency. To meet rising performance demands in extreme environments, developing PVC coatings with efficient flame retardancy and smoke suppression has become a key research focus. This study developed an innovative BiOCl@Cu-MOF hybrid through an in situ growth strategy. Incorporating the additive at 15 phr increased the limiting oxygen index (LOI) from 23.4 % to 29.4 %. The PVC coating also passed the UL-94 rating test, reaching the highest V-0 level. Cone calorimetry analysis showed a 55.9 % reduction in peak heat release rate, indicating superior flame retardant behavior. In terms of smoke suppression, the coating achieved a 66.7 % decrease in peak smoke production rate. More importantly, the peak carbon monoxide production, a critical lethal factor in fires, was suppressed by 46.9 %. The PVC coating further exhibited 99.9 % antibacterial efficacy against both Staphylococcus aureus and Escherichia coli . This work establishes a pioneering design paradigm for multifunctional protective coatings, offering significant potential in fire-safe building materials, electronics encapsulation, and bio-secure applications.
研究领域:
材料科学
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化学工程
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高分子材料
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防火技术
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Yan-Ping Yu,Meng-Meng Pan,Ming Jiang,Xu Yu,Li Xu
Despite the rapid development of metal-organic framework materials (MOFs), the development of multifunctional MOFs and their application in catalytic and antibacterial fields is still of great significance. In this work, a three-dimensional flower-like Cu-MOF was successfully synthesized by a simple solvothermal method and its pyrolytic derivative Cu-N-C 450 was obtained through pyrolysis of the Cu-MOF. For the first time, the Cu-MOF was preliminarily verified to have laccase-like activity and exhibited excellent antibacterial ability to Escherichia coli ( E. coli ) at a very low concentration of 10 µg/mL without the addition of other substrate. Interestingly, we found the re-assembly of the micro-sized Cu-MOF to generate larger sized flower-like structures which was not common in the self-assembled phenomenon. We found the collision and centrifugation induced external force interaction might be the main factor. In addition, the Cu-MOF was also be used as adsorbent to remove environmental pollutants, such as methylene blue , and the Cu-N-C 450 can rapidly catalyze the degradation of methylene blue with a high efficiency to 96.7%. This work offers a multifunctional MOFs material and promotes the exploration of extending application of the MOFs.
研究领域:
材料科学
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催化化学
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微生物学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Caiqin Su,Defeng Hu,Hongtian Yang,Yide Han,Yufeng Liu,Ying Zhang,Xia Zhang
In this study, bi-functions of surface adsorption and laccase like catalysis were integrated by the hybrid membranes of Cu-MOF (Cu-2MI) uniformly incorporated polyvinylidene fluoride (PVDF) for the first time, which endow an unexpected utility in surface physical adsorption and chemical catalytic engineering. In which, the loading of Cu-2MI was varied to optimize the surface performance of the membranes. The adsorption conditions were optimized based on batch adsorption experiments, and the adsorption kinetics, isotherms, and thermodynamics were discussed by using theoretical models to elucidate the adsorption mechanism. In addition, the laccase-mimicking catalytic performance of these Cu-2MI/PVDF hybrid membranes was explored based on the colorimetric reaction of 2,4-dichlorophenol (2,4-DP). The laccase-like catalytic kinetics, including K m and V max , were determined, and their catalytic stability under varying pH, temperature, organic solvents, and storage time was systematically tested and compared to that of free laccase. The maximum adsorption capacity of the obtained Cu-2MI/PVDF hybrid membrane for acid fuchsin (AF) is 4789.5 μg cm −2 . Moreover, the hybrid membrane exhibits a good linear relationship in the range of 5.0–750 μM in adrenaline detection, with a detection limit of 3.60 μM. This work highlights the exceptional surface activity and stability of the Cu-MOF/PVDF hybrid membranes, which ensure promising applicability in surface physical and chemical engineering.
研究领域:
材料科学
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环境工程
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生物催化
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yun Li,Jiaqi Bu,Yirui Sun,Zihan Huang,Xiuhao Zhu,Shang Li,Ping Chen,Yalan Tang,Guowen He,Shian Zhong
In this work, Cu-based metal-organic framework material (Cu-MOF) was combined with an electric field to construct a three-dimensional electrocatalytic synergistic activation of peroxymonosulfate sulfate (PMS) system (3D/Cu-MOF/EC/PMS) for the degradation of norfloxacin (NOR). The results show that the synergistic degradation efficiency of the Cu-MOF material with the electric field is enhanced by nearly 64 % relative to the degradation efficiency of the two alone. The quenching experimental and EPR characterization indicates that ROS plays an important role in the degradation process, with O 2 – playing a dominant role. Finally, the degradation pathway of NOR was explored by DFT study and LC-MS tests, and the toxicity evaluation software (TEST) and CCK-8 cytotoxicity experimental studies demonstrated that the sewage after the degradation of NOR by this system would have little or no effect on human liver cells (L02). This study not only shows that the 3D/Cu-MOF/EC/PMS system can treat the water containing higher concentrations of NOR into a state that is not harmful to the human body but also provides a new idea for the improvement of catalysts that do not have obvious catalytic degradation effects.
研究领域:
环境科学
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催化化学
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毒理学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Xiao Liang,Qiu-Lan Li,Wen-Bo Zhao,De-Zhi Yang,Ya-Ling Yang,Zi-Tao Zhong
Given the potential risks posed by the toxic heavy metal ion Cr 3+ to environmental and human health, the development of fast, simple, and visible detection methods for Cr 3+ is critical to control its detrimental effects. This study presents a sensitive and selective colorimetric method for Cr 3+ analysis, leveraging the laccase-like activity of Co,Zn@Cu-MOF(V B3 ), which was synthesized via a microwave digestion approach. The usage and proportion of precursors (vitamin B3 and CuCl 2 ) were examined to obtain the material exhibiting the optimal catalytic activity and response to Cr 3+ . The well-designed Co,Zn@Cu-MOF(V B3 ) exhibited remarkable laccase-like activity at pH of 5.8, and can oxidize the colorless substrate (2,4-dichlorophenol) to red product with 4-aminoantipyrine as the chromogenic agent. The findings indicate that Cr 3+ induces a decrease in absorbance at 505 nm. Under optimal conditions, the absorbance was linearly proportional to the Cr 3+ concentration in the range of 0.68–679.25 ng/mL, achieving a detection limit of 0.124 ng/mL. The method also displays robust anti-interference performance against other metal ions, and was successfully applied in the determination of Cr 3+ in water samples, yielding recoveries ranging from 90.2 % to 108.8 %.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
LANGMUIR
·
2023
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IF 3.9
Pingtao Ming,Yuanyuan Niu,Yongxin Liu,Jinhao Wang,Haohong Lai,Qing Zhou,Haiyun Zhai
In this study, the synthesis of Cu-MOF-199@multiwalled carbon nanotubes (Cu-MOF-199@MWCNTs) composites was achieved and utilized to create an advanced electrochemical sensor for creatinine (Cre) detection. The composites were modified on a glassy carbon electrode surface through direct drip coating, followed by the deposition of copper nanoparticles (CuNPs) via constant potential deposition. Characterized by various techniques and electrochemical analyses, the Cu-MOF-199@MWCNTs composite increased the CuNPs load, improving the detection sensitivity for Cre. Under optimal conditions, the modified electrode exhibited good linearity across a broad range of Cre concentrations (0.05–40.0 μM) with a low detection limit of 11.3 nM. The developed sensor demonstrated remarkable stability, reproducibility, and selectivity, showing promise in sensitive and accurate Cre detection in serum samples.
研究领域:
生物医学工程
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2023
·Vol. 29
·期 12
·5491-5503
·
IF 2.8
Ren Shufang,Cao Li,Liu Xiaohang,Cui Wangyong,Lv Rui,Guo Tong,Wang Qingtao,Zheng Zhixiang
The detection of norfloxacin (NOR) is crucial because the overdoes and accumulation may result in residues in environment in animal-derived foods, which can destroy ecology and cause disease for people. A molecularly imprinted electrochemical sensor based on g-C 3 N 4 /Cu-MOF was constructed for the selective detection of norfloxacin in this paper. The g-C 3 N 4 /Cu-MOF was synthesized by melamine pyrolysis and solvothermal method followed by ultrasonic mixing. After drop casting g-C 3 N 4 /Cu-MOF on glassy carbon electrode, the molecularly imprinted film was synthesized by electropolymerization. The composite was analyzed by powder X-ray diffractometer, field emission scanning and transmission electron microscope, and Fourier transform infrared spectroscopy. The electrochemical properties of the sensor were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, and pulse voltammetry. The results show that the composite of g-C 3 N 4 /Cu-MOF efficiently decreased the charge transfer resistance of electrode and improved the electron transfer kinetic between analyte and electrode with the improved current response and increased active area. After optimizing conditions of the ratio of functional monomers to template molecules, the number of polymerization cycles, accumulation time, electrolyte pH, and the sensor exhibits excellent response toward NOR with the linearity range of 0.02–0.1 μmol/L and 1–120 μmol/L and the limit of detection of 6.67 nmol/L. Moreover, it shows good selectivity, anti-interference, and reproducibility properties. In the real sample detection of pharmaceutical formulations, serum and milk, the sensor shows an acceptable recovery rate and standard deviation.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
高影响因子
Catalysts
·
2024
·Vol. 14
·期 12
·929
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IF 3.8
Jingxin Tan,Mengqi Li,Lingtao Liu,Lijian Wang,Haocun Wang,Junjie Bian,Chunhu Li
Biomass platform compound 5-Hydroxymethylfurfural (HMF), with its low price and abundant source, can be used as a renewable resource to replace traditional petrochemicals. MOF-808(Zr) has tunable active sites and excellent stability under high temperatures and acidic as well as basic environments, and the unsaturated coordination of metal ions within its framework structure can exhibit Lewis acidity, facilitating catalytic transfer hydrogenation from HMF to 2, 5-Furandimethanol (BHMF). The hydrothermal–impregnation–reduction method was used to prepare Cu/MOF-808 catalysts with high catalytic performance. Formic acid was chosen as the hydrogen donor solvent. The selectivity and yield of BHMF were 75.65% and 71%, respectively, at 150 °C for 4 h. A reaction pathway for the catalytic hydrogen transfer of HMF to BHMF was proposed. The high activity and stability of the Cu/MOF-808 catalyst with dual active sites provide a viable method for feasible hydrogenation of HMF to high value-added compounds.
研究领域:
化学工程
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催化科学
·
可再生资源转化
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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）