COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yue Gao,Furong Tang,Juan Zhang
A metal-polyphenol network functionalized on surface of zeolitic imidazolate framework-8 (MPN@ZIF-8) were fabricated for efficient removal of fluoroquinolones (FQs) antibiotics. Polyphenol as one kind versatile molecular glue was employed as organic ligand as well as linkage for growth and deposition of metal-polyphenol network (MPN) on ZIF-8 supporter. The prepared MPN@ZIF-8 composite was characterized by various methods. The parameters including the dosage of adsorbents, pH value, adsorption time and salt concentration affecting the adsorption process were systematically investigated. FQs adsorption isotherms and kinetics best fitted the Langmuir isotherm (R 2 > 0.980) and pseudo-second-order model (R 2 > 0.987), respectively. Thermodynamic studies showed that adsorption process of norfloxacin (NOR), ciprofloxacin (CIP) and enrofloxacin (ENR) were all spontaneous. The adsorption capacity of MPN@ZIF-8 were 104.60, 86.23 and 66.21 mg g −1 for NOR, CIP and ENR, respectively, which were significantly higher than those of precursor ZIF-8. The potential adsorption mechanism was stated, most likely involved in π-π interaction, hydrogen-bond and electrostatic interaction between the FQs and the MPN@ZIF-8. In addition, the removal efficiency of the three FQs on MPN@ZIF-8 was still above 95 % after recycle for four times. The recoveries of the three FQs were in the range of 77.1–100.1 % with RSDs below 7.8 % in real sample analysis. Compared with the methods in preparation of MOF-based composite, the fabrication method mentioned in this study is versatile, very easy, environmental friendly and low cost, which has potential in large-scale production for application in environmental remediation.
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
DALTON TRANSACTIONS
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2017
·Vol. 46
·期 7
·2114-2121
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IF 4.029
Gen Liu,Yan Xu,Yide Han,Junbiao Wu,Junli Xu,Hao Meng,Xia Zhang
A hierarchical zeolitic imidazolate framework-8 (micro/meso-ZIF-8) was fabricated by using cetyltrimethylammonium bromide as a structure-controlling agent and L-histidine as co-templates. Compared to the conventional microporous ZIF-8 (micro-ZIF-8), the hierarchical porous structure of micro/meso-ZIF-8 contains micropores and maximum mesopores of around 35.6 nm. The as-prepared hierarchical micro/meso-ZIF-8 featured a large surface area and superior spontaneous adsorption activity than micro-ZIF-8 towards lysozyme (LZM), bovine hemoglobin (BHb) and bovine serum albumin (BSA), and the adsorption capacity increased with the decreasing of the protein size due to the molecule cutoff effects. The maximum adsorption capacity of LZM on micro/meso-ZIF-8 was higher than most of the reported results under similar adsorption conditions. The analyses of adsorption kinetics and thermodynamics implied that the adsorption mechanism mainly involved physical adsorption. Moreover, the micro/meso-ZIF-8 showed good thermal stability against temperature and excellent regeneration ability in the recycling adsorption experiments. This work proposed herein opens a broad application prospect of hierarchical MOFs in biological molecule separation, immobilization and enrichment.
研究领域:
生物化学
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材料科学
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纳米技术
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Cui Sun,Jin-hua Zhang,Xiang-fei Yuan,Jia-ning Duan,Sheng-wen Deng,Jing-min Fan,Jeng-Kuei Chang,Ming-sen Zheng,Quan-feng Dong
The quasi-solid-state electrolytes (QSSEs) with an inorganic skeleton, a solid–liquid composite material combining their respective merits, exhibit high ionic conductivity and mechanical strength. However, most quasi-solid electrolytes prepared by immobilizing ionic liquid (IL) or organic liquid electrolyte in inorganic scaffold generally have poor interface compatibility and low lithium ion migration number, which limits its application. Herein, we design and prepare a ZIF-8-based QSSE (ZIF-8 QSSE) in which the ZIF-8 has a special cage structure and interaction with the guest electrolyte to form a composite electrolyte with good ionic conductivity about 1.05 × 10–4 S cm–1 and a higher lithium-ion transference number of about 0.52. With the ZIF-8 QSSE, a protype lithium battery coupled with LiCoO2 cathode shows good electrochemical performances with an initial discharge capacity of 135 mAh g–1 at 50 mA g–1 and a remaining capacity of 119 mAh g–1 after 100 cycles, only 0.119% capacity degradation per cycle. It is worth noting that the ZIF-8-based QSSEs have good thermal stability up to 350 °C that does not show thermal runaway, which is significantly higher than that of a conventional organic liquid battery system.
研究领域:
材料科学
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电化学
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能源存储
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DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE
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2024
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IF 3.2
Mibin Lin,Jia Sha,Zhonghao Zhu,Penghui Ye,Kai Zhao,Kaijun Xiao
Metal–organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn 2+ /2-methylimidazole molar ratio of 1:5. The adsorption mechanism of methanol on CS@ZIF-8 beads was systematically studied by X-ray photoelectron spectroscopy, isotherms, and kinetics. The Langmuir model calculated the maximum adsorption of methanol to 56.8 mg/g. Adsorption kinetics are consistent with pseudo-second-order models. Furthermore, CS@ZIF-8 beads presented excellent recyclability for removing methanol for five consecutive cycles. It could treat 60 bed volumes of Chinese yellow wine in column filtration experiments to make the concentration below 50 mg/L. In summary, the highly efficient CS@ZIF-8 adsorbent has great potential for methanol adsorption from fermented wines. Practical Application Methanol will exhibit adverse symptoms such as weakness and headaches after it is ingested. Therefore, methanol control is an important safety factor in the production of fermented wine. The adsorption method is recognized as a widely used technique due to its high efficiency and selectivity. The CS@ZIF-8 adsorbent synthesized in this paper provides a new idea for methanol removal.
研究领域:
食品科学
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材料科学
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DOI
PubMed
高影响因子
ADVANCED ENGINEERING MATERIALS
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2023
·Vol. 25
·期 11
·2201710
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IF 3.6
Zihan Tian,Zhaoping Hou,Xinhe Yang,Liangliang Liu,Wanggang Zhang
Due to the wider bandgap and low electron discharge capacity, the zeolitic imidazolate framework (ZIF-8) shows low photocatalytic performance compared with conventional semiconductor materials. To enhance the photocatalytic activity of ZIF-8, the ZIF-8@AgNWs composite is synthesized via the in situ growth method using silver nanowires (AgNWs) as the photo-enhanced material. The obtained ZIF-8@AgNWs exhibit the fully encapsulated shell-core structure of ZIF-8-AgNWs. The UV−vis diffuse reflectance spectroscopy (DRS) analysis shows that the addition of AgNWs leads to a significant increase in light absorption of the ZIF-8@AgNWs composite, and the bandgap of the ZIF-8@AgNWs is 2.9 eV, with a significant decrease compared to pure ZIF-8 (4.96 eV). The ZIF-8@AgNWs-2 achieves the best photocatalytic activity for methylene blue (MB) degradation. Its degradation efficiency reaches 94%, and its apparent rate constant is 0.04371 min −1 . Herein, a novel strategy for the MOF-based photocatalytic materials with higher photocatalytic activity is provided.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Jiaying Pei,Zhongsheng Chen,Youqun Wang,Bo Xiao,Zhibin Zhang,Xiaohong Cao,Yunhai Liu
In this study, a 10%Fe-ZIF-8-300-PO 4 adsorbent was synthesized and its adsorption performance for U(VI) was investigated comprehensively. It was found that after a series of operations such as Fe doping, thermal activation and phosphorylation, the adsorption performance for U(VI) can be significantly improved on the basis of maintaining the skeleton characteristics of ZIF-8. The results showed that the optimal Fe-doping amount and thermal activation temperature was 10% and 300°C, respectively. The adsorption of U(VI) on 10%Fe-ZIF-8-300-PO 4 reached equilibrium within 60 min, and conformed to pseudo-second-order kinetic equation. Furthermore, a maximum saturated adsorption capacity of 691.83 mg/g was achieved. The above results demonstrated that 10%Fe-ZIF-8-300-PO 4 may be used to efficiently remove U(VI) from uranium-containing radioactive waste water.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Shuhui Hu,Lin-Lin Yang,Chang Yan,Yanan Xiao,Zijing Jin,Xiuhai Gan,Bo Zhang,Wenneng Wu
Environmental stimulus-responsive controlled-release nanopesticides have the ability to adapt to the specific microenvironment of pathogen outbreaks, which can improve pesticide utilization efficiency. A pH and redox dual-stimuli responsively controlled release system (ZIF-8@Hex@Fe/GA) using zeolitic imidazolate framework-8 (ZIF-8) as the support and metal-phenol complex (Fe-GA) as the capping agent was constructed to deliver hexaconazole (Hex) for management of Phomopsis sp. The ZIF-8@Hex@Fe/GA composite demonstrated a high loading capacity and effectively improved the light stability of Hex. The hydroxyl groups present in the composite facilitate its diffusion on kiwifruit leaves, improving wettability. Additionally, the large specific surface area of ZIF-8@Hex@Fe/GA provides resilience against rainwater scouring. This innovative system intelligently responds to the acidic and oxidizing conditions associated with Phomopsis sp. infections, ensuring targeted and controlled release of Hex. Bioactivity assessments revealed that ZIF-8@Hex@Fe/GA exhibited protective effects of 84.16 ± 3.37 % and 80.77 ± 2.08 % on kiwifruit fruits and leaves at a concentration of 100 mg/L, outperforming Hex emulsifiable concentrate (Hex EC) by 21.34 % and 25.39 %, respectively. The acute toxicity of ZIF-8@Hex@Fe/GA to zebrafish was reduced 9-fold compared to Hex EC. Furthermore, ZIF-8@Hex@Fe/GA showed high safety for HEK293 cells, with a cell survival rate of 81.59 ± 2.11 % after 72 h of 10 mg/L treatment, whereas the cell survival rate for Hex TC, treatment was only 1.79 ± 1.32 % after 72 h. In conclusion, ZIF-8@Hex@Fe/GA demonstrates significant potential for targeted pesticide delivery and environmental protection.
研究领域:
植物病理学
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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 CO2 Utilization
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2018
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IF 5.503
Zhengfeng Huang,Peimei Dong,Yanzhao Zhang,Xiaoxiao Nie,Xiya Wang,Xiwen Zhang
A strategy of coupling a photocatalyst with a high CO 2 adsorption capacity material was proposed in order to integrate CO 2 capture and photoreduction processes into a single system. TiO 2 and ZIF-8 were selected for their high photoactivity and CO 2 adsorption capacity respectively. We employed a facile in-situ growth strategy to inlay ZIF-8 into the TiO 2 film grid. X-ray diffraction and scanning electron microscopy revealed that ZIF-8 was successfully prepared and inlaid into the TiO 2 film. X-ray photoelectron spectroscopy and photoluminescence spectra suggested that the TiO 2 and ZIF-8 were coupled by chemical bonding. The ZIF-8 decorated TiO 2 film exhibited excellent CO 2 capture capacity and showed remarkably enhanced yield for reducing CO 2 to CO and CH 4 when compared with pure TiO 2 film. The probable mechanism of the photoreduction process is also discussed.
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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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2023
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IF 5.4
Runjia Liu,Yan Liu,Qiwen Yong,Zhi-Hui Xie,Liang Wu,Chuan-Jian Zhong
The long-term corrosion resistance of conventional micro-arc oxidation (MAO) coatings on magnesium alloy is limited by the inherent micro-scale pores. To address this issue, zeolitic imidazolate framework-8 (ZIF-8) and zinc gluconate (ZnG) loaded ZIF-8 (ZnG@ZIF-8) were synthesized and incorporated into the MAO coating. The electrochemical and immersion tests showed that the MAO composite coating doped with ZIF-8 and ZnG@ZIF-8 ((ZIF-8 + ZnG@ZIF-8)/MAO) displayed optimal corrosion resistance. The corrosion current density ( j corr ) of the pristine (ZIF-8 + ZnG@ZIF-8)/MAO composite coating (3.38 nA cm −2 ) is 63.3 times lower than that of the blank MAO coating (214 nA cm −2 ), indicating the significant enhancement in corrosion protection of the nanoparticle to the coatings. Even after 32 days of immersion in a 3.5 wt.% NaCl solution, the j corr of the former was as low as 87.3 nA cm −2 , much lower than that of the blank MAO coating (1710 nA cm −2 ). These findings provide new insights into the design of corrosion-resistant MAO composite on magnesium alloy surfaces via the incorporation of inhibitor-loaded ZIF-8 nanocontainers.
研究领域:
材料科学
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表面工程
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腐蚀防护
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纳米技术
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DOI
高影响因子
Materials
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2018
·Vol. 11
·期 1
·159
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IF 2.467
Liqing Li,Xiancheng Ma,Ruofei Chen,Chunhao Wang,Mingming Lu
Nitrogen-doped porous carbon (ZC) is prepared by modification with ammonia for increasing the specific surface area and surface polarity after carbonization of zeolite imidazole framework-8 (ZIF-8). The structure and properties of these ZCs were characterized by Transmission electron microscopy, X-ray diffraction, N2sorption, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Through static adsorption tests of these carbons, the sample obtained at 600 °C was selected as an excellent adsorbent, which exhibited an excellent acetone capacity of 417.2 mg g−1(25 °C) with a very large surface area and high-level nitrogen doping (13.55%). The microporosity, surface area and N-containing groups of the materials, pyrrolic-N, pyridinic-N, and oxidized-N groups in particular, were found to be the determining factors for acetone adsorption by means of molecular simulation with density functional theory. These findings indicate that N-doped microporous carbon materials are potential promising adsorbents for acetone.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Wei Li,Linghao Wang,Menghao Lin,Li Chen,Xinjuan Zeng,Lichun Dong,Cailong Zhou
Mixed matrix membranes (MMMs) have emerged as a promising solution for the treatment of dye wastewater. A key challenge in advancing MMMs is how to effectively integrate two nanofillers with distinct advantages to mitigate the limitations of single-nanofiller systems. In this study, we present a binary nanofiller strategy, utilizing metal–organic frameworks (MOFs) and covalent organic frameworks (COFs), to fabricate polyvinylidene fluoride (PVDF) based MMMs. By systematically adjusting the mass ratio of ZIF-8 MOF and TFB-BD(Me) 2 COF, the separation efficiency of membranes for dyes with different charges, capitalizing on the molecular sieving properties of MOFs and the superior compatibility of COFs was evaluated. The optimized membrane demonstrated a rejection of 91.66% for Congo red (CR), along with a water permeance of 641.9 L m −2 h −1 bar −1 . This work represents a novel attempt in the design of binary-nanofiller MMMs, offering new insights into the synergistic effects of hybrid nanofillers in membrane technology.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2020
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IF 5.065
Jiaojiao Cao,Chengbin Guo,Xingpeng Guo,Zhenyu Chen
A zeolitic imidazole framework-8 (ZIF-8) derivative was synthesized and developed as the corrosion inhibitor of copper in 0.5 mol/L NaCl solution, and its inhibition performance was investigated by electrochemical measurement and surface analysis . Results show that the ZIF-8 derivative could effectively inhibit copper from corrosion, and the inhibition efficiency was 87.2% at an optimal ZIF-8 derivative concentration of 45 mg/L. The corrosion inhibition mechanism of the ZIF-8 derivative could be explained as follows: the amino functional groups and the π-system formed by aromatic rings of the ZIF-8 derivative were tightly adsorbed on the copper substrates, which systematically formed a hydrophobic film, thereby effectively inhibiting the corrosion caused by aggressive ions.
研究领域:
材料科学
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电化学
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表面分析
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DOI
高影响因子
危险品化学品经营许可证（带存储）