JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Yeqiang Lu,Shiyang Li,Fuyou Chen,Hui Ma,Congjie Gao,Lixin Xue
Development of efficient absorbent materials for oil spillage clean-up and environmental pollution remediation is highly desired but remains a challenge. In this work, superhydrophobic/superoleophilic polysulfone based ZIF-7 composite (SPZ) foams were fabricated via chemical modification of polysulfone and integrating with hydrophobic coin-shaped ZIF-7 particles. The synergistic approaches provided the SPZ foams with high porosity, low density and superhydrophobic/superoleophilic features ( θ water =162.3°, θ oil =0°) and outstanding self-cleaning property. The as-prepared SPZ foams exhibited highly selective absorption capacity (up to 3800 wt%) for various kinds of oils and organic solvents. Furthermore, the SPZ foams still maintained 95.2% of its pristine absorption capacity and the θ water remained at 143.6° after ten absorption/distillation cycles. The SPZ foam showed outstanding separation ability towards different types of emulsions with separation efficiency all above 97%. The high oil/water separation efficiency and robust reusability made the SPZ foams promising absorbent in dealing with practical oil spills.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Xin Zhang,Li Tian,Zhuo Sun,Qian Wu,Xiangyu Shan,Yingjie Zhao,Ruizhan Chen,Juan Lu
A molecular-imprinted electrochemiluminescence sensor for procymidone (PCM) detection was reported based on Ru(bpy) 3 2+ @ZIF-7. A novel self-accelerated Ru(bpy) 3 2+ @ZIF-7 was prepared by one-step synthesis method, which exhibited high electrochemiluminescence (ECL) emission as a coreactant in the presence of tri- n -propylamine (TPrA). Concretely, ZIF-7 was not only the carrier of Ru(bpy) 3 2+ , but also the co-reaction promoter of Ru(bpy) 3 2+ /TPrA ECL system. The introduction of molecular imprint polymer (MIP) with PCM gave new characteristics of specific recognition of analyte PCM. The change value of ECL intensity (ΔI) was proportional to the logarithm of PCM concentration, with a wide linear range and a low detection limit of 1.0 × 10 −10 to 1.0 × 10 −6 mol L −1 and 2.0 × 10 −11 mol L −1 , respectively. The presented MIP-ECL sensor had high sensitivity, selectivity and stability, and had great potential in the field of food safety detection.
研究领域:
分析化学
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食品安全检测
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yang Gao,Yuyang Wang,Yanlin Jiang,Chaojie Bai,Zuoqun Zhang,Yawen Zhao,Congjie Gao,Lixin Xue
To improve interface compatibility between ZIF-7 particles (PTs) and polyamide (PA) and reverse osmosis (RO) performance of thin film nano-composite (TFN) membranes, ZIF-7-NH 2 (x) particles (PTs) with different levels of -NH 2 substitution were synthesized by reacting Zn(NO 3 ) 2 with mixed ligand under different preparation conditions. The impact of their residual surface functional groups (SFGs) on the formation of inter-phase covalent bonds (ICBs) in PA separating layers were investigated relating to the inter-phase compatibility and salt rejection performance of the formed composite RO membranes. Doping ZIF-7-NH 2 PTs with ICBs could avoid the expansion of PA in acidic condition. Surprisingly high chemical stability was observed for ZIF-7-NH 2 PTs wrapped in the PA separating layers in TN membranes in the pH range of 2–13. TN(50)-0.15 membranes with strong ICBs showed 3 times higher water flux of 76 L·m −2 ·h −1 under 5.5 MPa at a high salt rejection of 98.7 %.
研究领域:
材料科学
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化学工程
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环境工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Guangyu Zhu,Juan Su,Chunxiao Yin,Huali Li,Yong Yao,Liuqin Zhang,Xiang Yao,Xiaohu Zhang,Fa-Qian Liu
Herein, zinc gluconate was used as zinc source to synthesize ZIF-7@ZnG nanoparticles (NPs), and modified with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDS) to obtain ZIF-7@ZnG@PFDS superhydrophobic NPs. To improve the durability and wear resistance of superhydrophobic coating, epoxy resin (EP) was introduced as the connection layer to fabricate ZIF-7@ZnG@PFDS/EP superhydrophobic coating. The results show that the fabricated coating exhibits superior hydrophobicity (CA = 164°, SA = 3.7°) and manifests excellent performance in self-cleaning, anti-icing, anti-biofouling and anti-corrosion. It is worth mentioning that after 36 days of immersion in 3.5 wt% NaCl solution, the impedance modulus of the coating is three orders of magnitude higher than that of EP coating. The result of wire beam electrode (WEB) confirms that ZIF-7@ZnG@PFDS/EP coating has a self-healing property in the artificial damage area. Finally, the influence mechanism of ZIF-7@ZnG@PFDS nanoparticles on the corrosion process was discussed. We believe this work could provide a novel insight into the preparation and application of superhydrophobic coating based on MOFs material.
研究领域:
材料科学
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化学工程
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表面科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Yao Zhang,Chao Wu,Huiming Zhu,Baoquan Zhang
Superhydrophobic materials for efficient separation of stabilized oil/water emulsions are in an urgent need to deal with an enormous amount of oily wastewater worldwide. The stainless steel mesh supported zeolitic imidazolate framework-7 (ZIF-7-coated SSM) was fabricated by way of secondary hydrothermal growth, it was further modified by using coordinated polysiloxane elastomer (CPE). Based on characterization by using SEM, XRD, FT-IR and contact angle measurements, the as-synthesized CPE-ZIF-7-coated SSM possessed a rough surface structure of microscale ravines with both superhydrophobicity and superoleophilicity. The stabilities of CPE-ZIF-7-coated SSM were investigated with respect to various treatments including high temperature, corrosion and ultrasonication. The self-healing ability and working mechanism of CPE-ZIF-7-coated SSM were explored by responding to continuous abrasion and O 2 plasma etching. The CPE-ZIF-7-coated SSM exhibited high water-in-oil emulsion separation efficiencies of over 99.9% with a remarkably fast self-healing ability upon damage in less than 10 min without any externally imposed input of matter/energy. The superhydrophobic CPE-ZIF-7-coated SSM with fast self-healing ability would be a promising alternative material for practical applications in separation of emulsive oil/water mixtures.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Guangyu Zhu,Fuyan Kang,Qianyun Tan,Huali Li,Gege Zhang,Min Wu,Yong Tan,Fa-Qian Liu
Marine biological pollution restricts the sustainable development of marine economy. Cu 2 O stands as a predominant antifouling agent for developing marine resources engineering. However, the problems of easy aggregation, rapid failure, and explosive release of copper ions limit the practical application of Cu 2 O. In this work, a novel copper-functionalized two-dimensional zeolitic imidazolate framework-7 nanocomposites ZIF-7@Cu 2 O was successfully fabricated by in-situ growth methodology. The emergence of ZIF-7@Cu 2 O nanocomposites solves the above problems in the use of Cu 2 O. Due to the huge specific surface area of the 2D ZIF-7 nanosheets and the electrostatic interactions, the cubic Cu 2 O, with a diameter of 250 nm, can be uniformly and firmly anchored on the surface of 2D ZIF-7 nanosheets, thus effectively avoiding the rapid dissolution of cuprous oxide and reducing the release rate of copper ions. Antibacterial experiments demonstrate that, in comparison to ZIF-7, Cu 2 O, and ZIF-7/Cu 2 O (physical mixture of ZIF-7 and Cu 2 O), ZIF-7@Cu 2 O exhibits superior antibacterial properties with 99.99 % against E. coli and the minimum inhibitory concentration (MIC) of 32 μg/mL. Furthermore, the reactive oxygen species (ROS) assay confirms ZIF-7@Cu 2 O could promote the generation of ROS. Antibiofilm formation results reveal that ZIF-7@Cu 2 O nanocomposites are effective in preventing biofilm formation of E. coli and P. aeruginosa at a low concentration (50 μg/mL). Finally, ZIF-7@Cu 2 O nanocomposites are employed as fillers to prepare ZIF-7@Cu 2 O/EP composite coating, the bactericidal kinetics and bacterial adherence on the coating surface are investigated. We believe this work could provide novel insights into the rational design of 2D ZIF-based material in the field of antifouling.
研究领域:
材料科学
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纳米技术
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生物医学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Chaojie Bai,Yang Gao,Zuoqun Zhang,Longdou Tu,Dajian Cai,Zixuan Lv,Congjie Gao,Lixin Xue
It is an important initiative to reduce the building energy consumption using energy recovering ventilation (ERV) systems. The application of ERV systems is hindered by the low CO2 barrier performance of commercial total heat exchange membranes (THEMs) that lead to unsatisfactory indoor air refreshing rate, and there is an urgent need for THEMs that have improved CO2 barrier properties and effective energy recovery efficiencies. Here, we report the formation of novel ZIF/PA TFN THEMs based on ZIF-7-X nanoparticles (NPs) with “core–shell” structures and tunable particle sizes, formed from benzimidazole (BIM) ligands and BIM substituted by −NH2, −CH3, −C2H5, and −C3H7 functional groups. The NPs were mixed with pyr omellitic triformyl chloride (TMC) in the organic phase during the interface polymerization process to form ZIF/PA TFN membranes. The total heat exchange performance of ZIF/PA TFN membranes could be effectively modified by the type and quantity of ZIF-7-X NPs added. The CO2 barrier properties and water vapor permeability of ZIF/PA TFN membranes could be improved by the addition of optimal levels of ZIF-7-X NPs, showing low CO2 permeance of 7.76 GPU, high H2O permeance of 663.8 GPU, and excellent enthalpy exchange efficiency of 72.1%. This work provided an effective strategy for tuning not only the nanostructures of ZIF-7 fillers but also the CO2 barrier properties of the formed ZIF/PA TFN membranes.
研究领域:
材料科学
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环境工程
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2023
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IF 4.6
Xu Xu,Xiang Li,Guibin Liu,Xixi Wei,Daming Feng,Lei Zhang
In recent years, efficient oil–water separation has gradually become an indispensable part of environmental treatment. Superhydrophobic/superoleophilic materials with excellent self-cleaning performance are urgently required and remain challenging in the investigation of practical, rapid, and efficient separation of oil–water mixture and emulsion, especially those with robust surfaces that can be used in harsh conditions. In this work, a novel superhydrophobic/superoleophilic material was first fabricated by in situ constructing PDMS@ZIF-7/Cu3(PO4)2 hierarchical architectures on a copper mesh, which was adopted as a high flux and efficient separation material for gravity-driven separation of oil–water mixture as well as emulsion. The introduction of crucial Cu3(PO4)2 nanosheet interlayers created the ideal hierarchical structures and serve as partial templates for the subsequent in situ growth of hydrophobic ZIF-7 nanosheets. An improved superhydrophobicity (CA = 155°), permeation flux (102,000 L m–2 h–1), and preferred self-cleaning property were thus achieved by such manipulation of the copper mesh. The PDMS@ZIF-7/Cu3(PO4)2 mesh exhibited exceptional separation efficiency for diverse oil–water mixtures and emulsions attributed to the superhydrophobicity and the demulsification ability and considerable stability to cope with extreme environments including sunlight resistance, low temperature, and corrosion resistance, which prompted its promising applicability in cleaning emulsified wastewater.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Siyuan Liu,Jingxing Liu,Zefen Wang,Zhiqi Wu,Yiliang Wei,Pengru Liu,Xiongdiao Lan,Yexin Liao,Ping Lan
Glucose oxidase (GOx) has a great application potential in the determination of glucose concentration. However, its sensitivity to the environment and poor recyclability limited its broader application. Herein, with the assistance of DA-PEG-DA, a novel immobilized GOx based on amorphous Zn-MOFs (DA-PEG-DA/ [email protected] /PDA) was developed to impart excellent properties to the enzyme. SEM, TEM, XRD, and BET analyses confirmed that GOx was embedded in amorphous ZIF-7 with ∼5 wt% loading. Compared with free GOx, DA-PEG-DA/ [email protected] /PDA exhibited enhanced stability, excellent reusability, and promising potential for glucose detection. After 10 repetitions, the catalytic activity of DA-PEG-DA/ [email protected] /PDA can maintain 95.53 % ± 3.16 %. In understanding the in situ embedding of GOx in ZIF-7, the interaction of zinc ion and benzimidazole with GOx was studied by using molecular docking and multi-spectral methods. Results showed that zinc ions and benzimidazole had multiple binding sites on the enzyme, which induced the accelerated synthesis of ZIF-7 around the enzyme. During binding, the structure of the enzyme changes, but such changes hardly affect the activity of the enzyme. This study provides not only a preparation strategy of immobilized enzyme with high activity, high stability, and low enzyme leakage rate for glucose detection, but also a more comprehensive understanding of the formation of immobilized enzymes using the in situ embedding strategy.
研究领域:
生物化学
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材料科学
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催化
·
酶工程
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DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Chunying Liu,Li Lv,Kun Liu,Junsu Jin,Jianguo Mi,Yongqiang Ren,Shisen Xu
By coupling CALF-20 on ZIF-7 via in situ crystallization in the confined micrometer-sized pores of poly(acrylates), a novel composite, namely, CALF-20-on-ZIF-7@poly(acrylates), has been synthesized for the simultaneous removal of CO2 and H2S from IGCC feed gas. Within this coupled crystal, CALF-20, known for its strong adsorption capacity and excellent stability toward CO2 and H2S, serves as the outer layer crystal to shift the adsorption/desorption hysteresis loop of inner ZIF-7 to beyond atmosphere pressure. Under high pressure, CO2 and H2S are automatically adsorbed. Upon reducing the pressure to the atmospheric level, CO2 is automatically released, while H2S remains temporarily due to its high adsorption energy. After about 150 cycles of CO2 adsorption/desorption of the kilogram-scale composite, H2S approaches saturation and is then removed by vacuuming. Since the content of H2S in IGCC feed gas is trivial, the total energy consumption for the composite regeneration is 0.16 MJ/kg (CO2). After 600 consecutive cycles, the CO2 adsorption capability of the composite decreases by 0.41%, demonstrating excellent cyclic stability.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 24
·12779-12789
·
IF 6.895
Yi Cao,Zhenqi Jiang,Yanying Li,Yinjie Wang,Yong Yang,Ozioma Udochukwu Akakuru,Juan Li,Aiguo Wu
Zeolitic imidazolate frameworks (ZIFs) as emerging porous materials have attracted remarkable attention for their unprecedented porosity and acidic sensitive degradation that enables high drug loading and microenvironment responsive fast payload release. However, the limited functions and disadvantages of ZIFs such as early drug release, potential cytotoxicity inducing damage to major organs, and even death of animals, impede their further biomedical application. In this work, we report the first tandem post-synthetic modification of ZIF-7 with both metal ions and organic ligands. Inspired by the benzimidazole-like inhibitors that are similar to the organic ligand of ZIF-7, a chemokine (C-X-C motif) receptor 4 (CXCR4) inhibitor AMD-070 (AMD) and magnesium ions (Mn2+) were successfully tandem exchanged to the ZIF-7 framework, forming an active-targeting framework AMD-ZIF-7(Mn) for CXCR4-overexpressed esophageal squamous cell cancer. The obtained AMD-ZIF-7(Mn) showed good biocompatibility in vitro and in vivo. Meanwhile, it exhibited an excellent T1-weighted magnetic resonance imaging performance and CXCR4 targeting ability. With 5-Fu loading, AMD-ZIF-7(Mn)/5-Fu showed a synergistic therapeutic effect in DNA damage and CXCR4 inhibition of esophageal squamous cell cancer. Therefore, we propose a structural reconstruction method to effectively explore and improve the biomedical application of ZIFs in esophageal squamous cell cancer theranostics.
研究领域:
生物材料学
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癌症治疗学
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医学影像学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Ritong Wang,Zuozhu Yin,Xiangyu Han,Yining Zhang,Suhang Zhang,Xiangyu Lan,Yuhua Chen,Zhen Hong,Chan Xie,Jilin Xu,Mingshan Xue
The aviation industry's rapid development highlights aircraft metal corrosion, especially for parts like nacelle lips exposed to varying environments, greatly impacting flight safety. In this paper, we propose a “sandwich” superhydrophobic anticorrosive coating containing ZIF-7, which utilizes nanocontainer technology to achieve rapid environmental response. ZIF-7-encapsulated corrosion inhibitor releases during corrosion, preventing leakage and coating damage. In addition, a superhydrophobic coating has been added on top of the anticorrosive coating, which has been imparted with a surface water contact angle of up to 154 ± 3° and a water sliding angle of about 3°. It also has excellent physical/chemical stability, and it remains superhydrophobic even after repeated mechanical abrasion and acid/alkali immersion. The double-layer structure not only further enhances the ‘labyrinth effect’ and extends the path for corrosive media to reach the metal surface, but also successfully isolates water and oxygen from the surface of the coating, which significantly improves the coating's functionality and anticorrosion performance. The highest impedance modulus of 1.3931 × 10 11 Ω·cm 2 is 10 7 fold higher than that of the bare Al alloy sheet. After 30 days of salt spray experiments to accelerate the corrosion rate, the bare Al alloy sheet corroded significantly smaller on the fifth day, while the ZB/ZnO did not undergo significant changes, and healing occurred at the scratches. Our study introduces ZIF-7 to the field of corrosion protection by superhydrophobic coating, providing insights into practical applications and the field of aircraft lip corrosion protection.
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高影响因子
危险品化学品经营许可证（带存储）