COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
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IF 3.131
Ming Yang,Qianhui Bai
Water pollution has become a great problem and aroused worldwide concern. As a new class of materials, metal-organic frameworks (MOFs) exhibit significant potential for wastewater treatment due to their high surface area, porosity, stability and tunability. In this work, flower-like hierarchical Ni-Zn MOF microspheres were synthesized via a facile solvothermal method. The mole ratio of Ni to Zn had a great influence on the morphology and microstructure of the final products. With the increase mole ratio of Zn to Ni, the morphology of MOFs gradually changed from spheroidal structure to rod-like structure. Using the Congo red (CR) experiment to evaluate the adsorption performance, Ni-Zn MOF displayed superior adsorption capacity towards CR (460.90 mg g −1 ), compared with Ni MOF (276.70 mg g −1 ) and Zn MOF (132.20 mg g −1 ). Besides the tuned morphology and pore structure, electron transferring from Zn species to Ni species would also favor the physicochemical adsorption of Ni-Zn MOF towards CR.
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
Electrocatalysis
·
2021
·Vol. 12
·期 4
·456-468
·
IF 2.713
Huang Dihui,Huang Xiaozhou,Chen Jinyang,Ye Ruihong,Lin Qian,Chen Sheng
This work constructed a new-type bisphenol A (BPA) electrochemical sensor on the basis of self-assembled multi-layer strategy of Ce-Zn-metal organic framework/multiwall carbon nanotube (Ce-Zn-MOF/MWCNT)–modified glassy carbon electrodes (GCE). The novel bimetallic Ce-Zn-MOF are synthesized by 1,3,5-benzenetricarboxylic acid (H 3 BTC) as the ligand via a hydrothermal approach. Bimetallic Ce-Zn-MOF with multiple catalytic sites and ultra-high specific surface area introduces traditional electrode modification materials, which improves the conductivity and catalytic ability of MWCNTs. Field emission scanning electron microscopy, transmission electron microscope and Powder X-ray diffraction were performed to analyze the Ce-Zn-MOF/MWCNTs. The electrochemical property was researched utilize differential pulse voltammetry (DPV), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). In the optimum conditions, the proposed sensor exhibited a wider dynamic linear range of BPA determination in 0.1 to 100 μmol·L −1 with a detection limit of 7.2 nmol·L −1 ( S / N = 3). This measurement of BPA was successfully used for drinking water with desirable recovery from 96.5 to 103.4%. Graphical Abstract
研究领域:
分析化学
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环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2023
·Vol. 21
·期 1
·1-12
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IF 10.2
Qiu Lirong,Ouyang Chengcheng,Zhang Wei,Liu Jia,Yu Luting,Chen Guoguang,Ren Lili
Atopic dermatitis (AD) is a chronic and recurrent inflammation disease associated with immune dysfunction. The high level of reactive oxygen species (ROS) causes high oxidative stress and further results in the deterioration of AD. At the same time, the ROS produced by bacterial infection can further aggravate AD. Here, the prepared PVA-based hydrogel (Gel) has a high ROS scavenging ability, and the antibacterial agent Zn-MOF(ZIF-8) loaded into the hydrogel shows a lasting and effective antibacterial activity. Thus, a Zn-MOF hydrogel (Gel@ZIF-8) is prepared to regulate ROS-mediated inflammatory microenvironment. In vitro experiments show that Gel@ZIF-8 has good antibacterial effect and cell biocompatibility. In the AD-induced mouse model, Gel@ZIF-8 can significantly enhance the therapeutic effect, such as reduce the thickness of epidermis, the number of mast cells and IgE antibodies. The results indicate that the ROS-scavenging hydrogel could treat the AD by regulating the inflammatory microenvironment, providing a promising treatment for managing AD.
研究领域:
生物材料学
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免疫学
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皮肤病学
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DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2025
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IF 4.7
Junru Li,Hui Wang,Xuefei Wang,Jinmei Ye,Xiaodong Wang,Bingchun Xue
In this study, a bimetallic nickel-doped Zn-MOF (Ni@Zn-MOF) was successfully fabricated by the hydrothermal method for the removal of norfloxacin (NOR) in pharmaceutical wastewater. The structural and surface characteristics of Ni@Zn-MOF were systematically characterized using SEM-EDS, BET, XRD, FT-IR, XPS, and Zeta potential analyses. The experimental results demonstrated that NOR could be effectively removed within a wide pH range from 3 to 11, achieving a maximum removal efficiency of approximately 94% under optimal adsorption conditions. The adsorption behaviors of NOR were in good accordance with the pseudo-second-order kinetic model and the Freundlich isotherm model. The adsorption mechanism study revealed that the good adsorption performance originated from the synergistic effects of multiple interactions, including pore filling, metal coordination, electrostatic attraction, hydrogen bond, and π-π stacking interactions. Notably, the adsorption-saturated Ni@Zn-MOF demonstrated exceptional regeneration capability and stability, maintaining removal efficiencies above 60% for NOR after five consecutive adsorption-desorption cycles. The current study suggests that the engineered Ni@Zn-MOF nanocomposite can be as a promising functional material for sustainable removal of residual antibiotic contaminants in practical wastewater treatment applications.
研究领域:
环境科学
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材料科学
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污染治理
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DOI
高影响因子
Journal of Cleaner Production
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2024
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IF 9.7
Wanru Feng,Jingya Zhang,Jianguo Mi,Junsu Jin,Guolei Xiang,Hong Meng,Shisen Xu
The synthesis of structured CO 2 adsorbents with high separation selectivity, strong stability, and low cost to meet industrial needs is very challenging. Here, we synthesized an ultra-stable Zn-MOF (Zn 2 (3-amion-1,2,4-triazolate) 2 (oxalate), Zn 2 (Atz) 2 Ox), and adopted an efficient in-situ growth strategy to produce millimeter-sized spherical Zn 2 (Atz) 2 Ox@AFP (Amino-Functionalization Poly(acrylates), AFP) composite. Due to the heterogeneous crystallization induced by the nanoscale crystal seeds and the confined space of AFP, the three-dimensional (3D) Zn 2 (Atz) 2 Ox bulk crystals transformed into 2D nanosheets with higher CO 2 adsorption efficiency and faster kinetics. Zn 2 (Atz) 2 Ox@AFP has a high affinity for CO 2 (2.05 mmol g −1 at 0.05 bar and 313 K) while exhibiting an inhibitory effect for N 2 (only 0.051 mmol g −1 at 1.0 bar and 313 K), leading to an excellent ideal adsorbed solution theory (IAST) selectivity (2990 for CO 2 /N 2 (5/95, v/v)). Interestingly, Zn 2 (Atz) 2 Ox@AFP exhibits a unique gating effect on CH 4 adsorption, which further extends its application range to natural gas purification. Dynamic breakthrough experiments confirmed that Zn 2 (Atz) 2 Ox@AFP can selectively capture CO 2 in the simulated CO 2 /N 2 (5/95) and CO 2 /CH 4 (5/95) mixed gases.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Zhi Luo,Jing Li,Shenglan Hu,Lingling Zheng,Lixin Xu,Biyang Deng
In this study, Ru(bpy) 3 2+ and oxalate (C 2 O 4 2− ) in Ru@Zn-MOF generated self-enhanced electrochemiluminescence (ECL). The self-enhanced ECL composite exhibited a short electron transfer distance and minimal energy loss, which ensured the high and stable luminescence efficiency of Ru@Zn-MOF. A MnO 2 @AuNPs nanocomposite was introduced into Ru@Zn-MOF via antigen–antibody interactions in the presence of squamous cell carcinoma antigen (SCCA). This significantly quenched the ECL signal due to the combined effect of the dual quenchers, MnO 2 NFs and AuNPs. A highly efficient ECL-RET immunosensor was constructed for the sensitive detection of SCCA in the linear range of 1 fg/mL to 100 ng/mL, with a limit of detection of 0.26 fg/mL (S/N = 3). This immunosensor has broad clinical applications for the quantitative detection of biomarkers.
研究领域:
生物医学工程
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分析化学
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肿瘤学
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2018
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IF 5.123
Yuanyuan Li,Xue Hu,Xiaodan Zhang,Haiyan Cao,Yuming Huang
Contrary to organic solvent-induced aggregation of Au nanoclusters (AuNCs), herein, we reported aggregation induced emission enhancement (AIEE) of AuNCs in an aqueous media through confinement of AuNCs by in situ formed Zn-MOF for detecting Zn 2+ . Glutathione capped AuNCs (GSH-AuNCs) was synthesized through reduction of Au 3+ by glutathione. Zn 2+ could significantly enhance the fluorescence of GSH-AuNCs upon addition of 2-methylimidazole, which was attributed to the formation of Zn-MOF. XRD and TEM were used to characterize the in situ formed Zn-MOF. Zn 2+ induced aggregation was demonstrated by dynamic light scattering and TEM. The quantum yields (QYs) of AuNCs after aggregation induced by in situ formed Zn-MOF attained to 36.6%, which was nearly 9 times that of the sole AuNCs. On this basis, a fluorogenic sensor was reported for Zn 2+ detection with a linear range from 12.3 nM to 24.6 μM and a detection limit of 6 nM (S/N = 3). The proposed sensor was successfully applied to assay the content of zinc in human serum, milk, water, and zinc sulfate syrup oral solution samples. The novel strategy proposed in this work may open a new window of interest in an unconventional application of gold nanoclusters/MOF nanoscale platform for metal ion detection and nutritional assessment of food.
研究领域:
分析化学
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材料科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Shuang Zheng,Lin Ding,Feilong Hu,Yong Zhang,Zhaofeng Ouyang,Shujuan Yang
In this work, the novel metal organic frameworks/multi-branched nanocellulose (Ni-Zn MOF@Multi CNC) fillers with different three-dimensional nanostructures are fabricated via two in-situ growing strategies, which were blended into Polyether sulfone (PES) matrix to construct composite ultrafiltration (UF) membranes. Furthermore, the effects of two structures of fillers on construction and performance of composite membranes are detailed investigated here. The results confirmed that the obtained PES composite membranes exhibited excellent permeability and selectivity because of the ultra-high hydrophilicity, abundant pores, and more negative charge of Ni-Zn MOF@Multi CNC fillers. Besides, compared with nanosphere structure of Ni-Zn MOF@Multi CNC, the nanoflower filler could provide more pores and cavities to enable higher water permeance, and more active surface charge (more -COO- groups) to increase protein rejection. The Ni-Zn MOF@Multi CNC 0.05 /PES membrane showed an 83 % higher permeance (up to 1151.00 L/m 2 h) and greatly improved BSA rejection (99 %). The Ni-Zn MOF@Multi CNC 0.05 /PES membrane has been successfully applied to different wastewater treatment, and shows expectant ultrafiltration performance.
研究领域:
材料科学
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环境工程
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2018
·
IF 3.716
Ning Zhang,Chuanhui Huang,Ping Tong,Zunmei Feng,Xiaoping Wu,Lan Zhang
Volatile polycyclic aromatic hydrocarbons (PAHs) in water and soil are associated with status in the human body. Development of simple, efficient detection method is challenging due to the coating could be attacked by the abundance of water in the direct-immersion solid-phase microextraction. The stability of coating is essential to the analysis results. In this paper, a stable Ni-Zn MOF/g-C 3 N 4 (MG NFs) nanoflowers with cavity traps structure was firstly reported and acted as solid-phase microextraction (SPME) adsorbent for PAHs. Markedly enhanced moisture and acid stability of the MG NFs was obtained through the doping the hydrophobic graphitic carbon nitride (g-C 3 N 4 ) and metal ions into metal organic frameworks (MOFs). The aperture environment and ambient environment of MG NFs were changed by the doping of the Ni and the g-C 3 N 4, respectively. The moisture and acid stability of MG NFs were prominently increased under the dual protection. Compared to commonly used commercial coatings, the MG NFs own large surface area, unique nanoflowers structure and numerous open metal sites on the nanosheets, which demonstrated significant extraction superiority for PAHs. The MG NFs coated fiber was used for the SPME preconcentration of PAHs and couped with GC–MS for detecting PAHs. It presented low detection limits (0.1–3.0 ng L −1 ), wide linearity (0.3–5000.0 ng L −1 ) and good linearity (the correlation coefficient >0.9951). The inter-day and intra-day relative standard deviation (RSD) (n = 3) for three replicate extractions using one fiber was 3.8%–9.1%, and 3.5%–9.2%, respectively. The fiber-to-fiber reproducibility (n = 3) was 4.2–11.8%. The coupling method was successfully applied in the analysis of real water and soil samples with satisfactory recoveries of 82.9–109.2%, 84.2–106.4%, and the corresponding RSDs were 2.4–11.3%, 3.6–10.8%, respectively. The results indicated the effectiveness of NG NFs coated fiber in further practical application.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 42
·6414-6422
·
IF 3.382
Rui Zhang,Wanqing Song,Mingjing Wang,Huiming Ji
Metal–organic framework (MOF) materials with controlled microstructures have become popular in the last few decades. In this study, Zn-MOF precursors with diverse crystallinity and particle size (20–800 nm) were synthesized using an accelerating or retarding nucleation process by introducing various secondary ligands, which were employed as modulators in the coordination and ligand exchange equilibria according to their different acidity coefficients. Thus, the pore size of MOF-derived ZnO clusters was different, resulting in diverse gas sensing properties. Moreover, large precursor-derived ZnO-(2 and 3) assemblies with the micropore sizes of 1 nm and 0.75 nm showed size-selective sensing and better performance, which exhibited a higher and fast response (4 s) to butanone and n-butanol with the lengths of 0.664 nm and 0.499 nm, respectively, and a low limit of detection (0.1 ppm). This simple method of controlling the nucleation of MOFs and the pore size of ZnO assemblies paved a new way towards the design of the microstructure of MOF-based functional materials.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Biao Jia,Baoshan He,Renli Liu,Jinping Yang,Wenjie Ren,Zhiguang Suo,Yiwei Xu
The conductivity of Zn-MOF-on-Co-MOF synthesized by one-pot method is improved by searching for the optimum carbonization temperature, which overcomes the limitation of traditional MOF. In order to further enhance electron transfer, the mesoporous PtPdCo trimetal was introduced, which provided considerable load capacity for methylene blue (MB) and reverse complementary DNA (sDNA), and also showed excellent catalytic activity for MB. In this study,the conductivity of aptasensor was improved by modifying carbonized MOF as the base material. In the presence of fipronil (FIP), Apt tended to bind to FIP and was separated from the electrode surface, so that the remaining single-stranded complementary DNA (cDNA) were hybridized with signal probe (MB@PtPdCo/sDNA) and amplified the electrochemical signal. By modifying the substrate, competitive amplification strategy and signal probe material to catalyze signal molecules, the sensor performs multiple signal amplification, and the electrical signal is significantly improved. The sensor has a wide detection range 100 pg/mL to 100 μg/mL and a low detection limit of 76 pg/mL.
研究领域:
分析化学
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环境科学
·
食品安全检测
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2018
·
IF 0
Jiuhai Wang,Yadi Fan,Hang-wei Lee,Changqing Yi,Changming Cheng,Xin Zhao,Mo Yang
Here, a novel colorimetric sensing platform for highly selective detection of Fe3+ in aqueous solutions was developed based on zero-dimensional Zn-MOF-74 [Zn2(DOBDC), DOBDC = 2,5-dihydroxyterephthalic acid] nanodots. The first ultrasmall Zn-MOF-74 nanodots with the average size within 10 nm were successfully synthesized by manipulating the initial conditions with a diluted material system. It was found that the ultrasamll MOF nanodots had a highly selective interaction with Fe3+ and showed a specific blue colorimetric change in aqueous solution. The highly dispersive nature in aqueous solution and high surface-to-volume ratio help MOF-74 nanodots closely interact with the targeted Fe3+ ions with a low limit of detection of 1.04 μM and a fast response within seconds. Finally, we demonstrate that the selective Fe3+ sensing mechanism of Zn-MOF-74 nanodots is due to the selective framework disruption and the formation of Fe-DOBDC salt complex with blue color. It is the first report of nanoscale MOF based colorimetric Fe3+ sensor with low limit of detection (LOD) comparable even to fluorescent MOF based Fe3+ sensors, which could be easily observed by naked-eye without expensive fluorescence apparatuses. The good colorimetric stability in aqueous environment, low limit of detection, rapid response, and nanosize nature enable this MOF nanodot to be a good Fe3+ sensing probe for biological and environmental sensing applications.
研究领域:
材料科学
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分析化学
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环境科学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）