APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Erqing Zhao,Yudi Guo,Yaru Liu,Shanqin Liu,Guangri Xu
Composite polymer electrolyte is a promising solid electrolyte for all solid state lithium ion batteries (ASSLIBs) due to its reliable safety, high ionic conductivity and excellent flexibility. Here, the uniform rhomboid dodecahedron structured zeolitic imidazolate framework-67 (ZIF-67) with high specific surface area and abundant nano-pores have been prepared by adjusting the synthetic solvent, which are subsequently incorporated into poly(ethylene oxide) (PEO) matrixes to form solid composite electrolyte (SCE). ZIF-67 MOFs can reduce the crystallinity of PEO matrixes, coordinate with C-O-C bonds of PEO and improve the mechanical properties of solid electrolyte. Additionally, abundant pore structure of ZIF-67 can endow its ability to absorb anions. The optimized SCE shows high ionic conductivities of 1.51 × 10 −5 S/cm at 25 °C, wide electrochemical stable window of around 5.2 V and good interfacial compatibility with lithium. Furthermore, LiFePO 4 /Li ASSLIB exhibits high electrochemical performances. At current rates of 0.2 C, 0.5 C, 1 C and 2 C, the battery has specific discharging capacities of 155.13, 153.77, 148.83 and 139.90 mAh·g −1 , respectively, and it demonstrates high capacity retention of 90.17% after 100 cycles at 0.5 C. Therefore, it is concluded that ZIF-67/PEO SCE is a good solid electrolyte candidate for ASSLIB.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
Arabian Journal of Chemistry
·
2017
·
IF 4.553
Bibimaryam Mousavi,Somboon Chaemchuen,Suphot Phatanasri,Cheng Chen,Cheng Zeng,Rakesh Ganguly,Serge Zhuiykov,Francis Verpoort
Glycerol can be converted to valuable products such as epichlorohydrin which is an important intermediate applied in various industries. For example, dioxane derivatives, which are important pharmaceuticals, can be obtained from epichlorohydrin. In the present study, ZIF-8, ZIF-67, MIL-100, and UiO-66 were applied for the direct cyclodimerization of epichlorohydrin. These MOFs were selected because they were already applied as active catalysts in ring opening of epoxides. Among them, ZIF-8 showed the highest activity and selectivity in the absence of any solvent or co-catalyst. Using ZIF-8 as a catalyst, the cyclodimer product (1,4-dioxane 2,5-bis-chloromethyl) was obtained in a yield of about 70% which was significantly superior to previous homo or heterogeneous catalysts for this reaction. Due to ZIF-8 structure and the proposed mechanism, the cyclodimerization reaction catalyzed either by the defects in the structure and/or on the surface. Furthermore, acidic-basic characteristics were also in play. The NH 3 and CO 2 temperature-programed desorption technique were utilized to identify the active sites and thereby reaction mechanism. Moreover, because of similar properties of ZIF-8 to zeolites, the activity of commercial ZSM-5 for the same reaction was also investigated in this work.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2018
·Vol. 23
·期 1
·325-334
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IF 2.509
Cao Wenjie,Han Miaomiao,Qin Lin,Jiang Qikang,Xu Junhui,Lu Zhen,Wang Yazhen
In this study, a nanocube of zeolitic imidazolate framework-67 (ZIF-67) was prepared by blending cobalt nitrate hexahydrate and 2-methylimidazole together in aqueous solutions containing hexadecyltrimethylammonium bromide (CTAB). Then, grapheme oxide (GO) wrapped ZIF-67 nanocomposites (ZIF-67/GO-n) were prepared by one-pot stirring method at room temperature. The morphology and microstructure of ZIF-67 and its GO nanocomposites were investigated by Raman spectra, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) specific surface area analysis. Electrochemical capacitance properties of all samples were characterized by cyclic voltammetry and chronopotentiometry, respectively. The results demonstrated that the content of GO used during synthesis process affected the specific capacity of nanocomposites while they were constructed as supercapacitor electrode. Compared with pure GO and ZIF-67 nanocubes, ZIF-67/GO-n composites had better specific capacitance. While the concentration of GO was 2 wt% based on their initial total mass of two reactants, ZIF-67/GO-2 composite presents a specific capacitance of 100.41 F g −1 at a sweep rate of 5 mV s −1 . The good electrochemical performance of ZIF-67/GO-n composite may be credited to large BET surface area of ZIF-67 nanocubes and good conductivity of GO, and thus is expected to become a potential electrode material for supercapacitors.
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
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Zhongguo Wang,Fengyue Yin,Xiong-Fei Zhang,Tianran Zheng,Jianfeng Yao
Particulate matter (PM) pullution has emerged as a global concern. Herein, delignified wood functionalized with metal–organic frameworks (MOFs) was investigated for efficient PM removal. In particular, the lignin removal was realized by a deep-eutectic-solvent assisted process. By integrating three different MOFs into the porous wood matrix, wood-based filters with hierarchical structure were fabricated. The MOF particles including ZIF-8, MOF-199 and UiO-66 were deposited on the filters through in situ growth approach, thereby leading to a uniform MOF dispersion and strong wood-MOF adhesion. The ZIF-8 functionalized wood filter exhibited the highest PM removal performance, with PM 2.5 and PM 10 removal efficiencies of 89.8% and 91.6%, respectively. The superior PM capture ability of ZIF-8@Wood is attributed to the suitable surface property and sophisticated channels/pores. The gas transport pathways and PM capture mechanisms within wood filter were discussed in detail. This cost-effective and environmentally friendly filtration device provides a novel material platform for PM removal, and it could be extended for hazardous gas capture and volatile organic compound adsorption.
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
VACUUM
·
2020
·
IF 2.906
Shaoju Jian,Xiaofan Ma,Qingming Wang,Jinglin Wu,Yifan Wang,Shaohua Jiang,Wenhui Xu,Weisen Yang
Increasing the complexity of external or internal structure of hierarchical nanomaterials is essential to improve the specific capacity and stability of anode for lithium ion batteries (LIBs). Three types of porous Co 3 O 4 nanocubes (concave-cube, yolk-shell cube and porous cube) with novel hollow structures were synthesized straightforwardly by annealing zeolitic imidazolate framework (ZIF-67) under varied temperatures of 350 °C, 450 °C and 550 °C, respectively. Consequently, the resulting concave, core-shell and porous Co 3 O 4 nanocubes exhibited superior specific capacities of 1009, 1148 and 696 mA h g −1 , respectively, at a current density of 200 mA g −1 after 200 cycles. Even at a high current density of 10 A g −1 , the core-shell Co 3 O 4 nanocube still showed a large reversible capacity of 317 mA h g −1 . The complex hierarchical texture, porous shell and core, and well-defined hollow structure of the Co 3 O 4 nanocubes were contributed greatly to the good lithiation/delithiation reversibility, ultralong cycling stability and enhanced rate capability.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
·
IF 4.084
Yating Xie,Ligang Chen,Qiu Jin,Jimmy Yun,Xin Liang
Co–Mo–S based catalysts have promising applications in both hydrogen evolution reaction (HER) and hydrodesulfurization (HDS). Herein, MoS 2 –Co 3 S 4 hollow polyhedrons have been successfully synthesized by the vulcanization of Mo doped ZIF-67. MoS 2 –Co 3 S 4 hollow polyhedrons show the superior HER and HDS catalytic activities to pure MoS 2 , Co 3 S 4 and MoS 2 –Co 3 S 4 nanoparticles prepared by the traditional coprecipitation methods, owing to the both morphology effect and synergistic effect between Co 3 S 4 and MoS 2 . DFT calculation studied the activation energies needed by MoS 2 and Co–Mo–S for HER and HDS, respectively. The required activation energies for C–S bond fracture and H 2 generation on Co–Mo–S structure are both obviously lower than that of MoS 2 structure. Our work reported a new method to synthesize Co–Mo–S catalysts with large surface area and numerous active sites, and further experimentally and theoretically proved Co–Mo–S structure had better catalytic activities for both HER and HDS.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
CATALYSIS LETTERS
·
2017
·Vol. 147
·期 9
·2410-2420
·
IF 2.799
Zanon Adriano,Chaemchuen Somboon,Verpoort Francis
Abstract Three different bimetallic zinc-cobalt zeolitic imidazolate frameworks (ZIFs) were successfully synthesized at room temperature in water through a green and simple procedure and tested as catalysts for the Knoevenagel condensation reaction between p -Br-benzaldehyde and malononitrile as model reaction. The materials were characterized with various techniques (XRD, ICP-AES, SEM, N 2 adsorption–desorption, TGA) and displayed excellent activities and selectivities. Moreover, the crystalline structure was preserved and the catalysts could be reused at least four times with negligible loss of activity. Graphical Abstract
研究领域:
化学
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材料科学
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DOI
高影响因子
Annals of Translational Medicine
·
2022
·Vol. 10
·期 18
·971-971
·
IF 3.616
Shuqi Zhao,Meifeng Chen,Zhu Yu,Thi Thai Hoa Pham,Shutian Mo,Yongfei He,Tianyi Liang,Wenlong Cao,Chuangye Han
BackgroundBreast cancer (BC) is the most common type of cancer affecting females. It is also a leading cause of cancer-related death in women worldwide.MethodsSonodynamic therapy (SDT) is an emerging therapeutic strategy for cancer treatment. SDT ensures non-invasive penetration of deep tumors and results in activation of non-toxic sonosensitizers administered in deep tumor sites to become cytotoxic. It has been reported that 2-dodecyl-6-methoxycyclohexa-2,5-diene-1,4-dione (DMDD) has a significant anti-tumor effect against various cancer types including BC. However, DMDD is hydrophobic. Therefore, a one-step encapsulation method was used in the current study to construct zeolitic imidazole frameworks-8 (ZIF-8) loaded with DMDD and sonosensitizer chlorin e6 (Ce6). ZIF-8 was further modified by coating it with a biomimetic cell membrane to improve targeted delivery.ResultsIn vitro and in vivo results indicated that the nanomedicines had great biocompatibility properties and targeting ability. The nanocomposite exhibited a higher release rate under an acidic tumor microenvironment. The tumor killing effect of reactive oxygen species (ROS) generated from Ce6 and inhibition of tumor growth was enhanced after ultrasound (US) treatment, which might be caused by the increase in apoptosis rate.ConclusionsThese findings show that the combination of nanomedicine and SDT provides a potential therapeutic method for BC.Keywords: Breast cancer (BC), 2-dodecyl-6-methoxycyclohexa-2,5-diene-1,4-dione (DMDD), metal-organic framework, sonodynamic therapy, ZIF-8 nanoparticles
研究领域:
肿瘤学
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纳米技术
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药学
·
治疗学
✓ 已验证
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Mingjun Cui,Shijun Huang,Jiate Xue,Xinyu Chen,Siming Ren
2D nanocontainers are prepared with barrier, corrosion inhibition and monitoring. • BZ-P/EP coating shows higher .|Z| f = 0.01 Hz of 4.1 × 10 10 Ω cm 2 after 60 days immersion. • PH-responsive ZIF-8 enables the rapid release of Phen under acidic conditions. • Visual corrosion warning is achieved via Fe 2+ –Phen coordination. To overcome the limitations of conventional anticorrosion coatings, which typically exhibit single functionality and lack early-stage corrosion warning capability, this study presents the design and fabrication of a two-dimensional intelligent nanocontainer system. Specifically, a pH-responsive zeolitic imidazolate framework (ZIF-8) was grown in situ on hexagonal boron nitride (h-BN) nanosheets, and subsequently loaded with 1,10-phenanthroline (Phen), enabling the integration of physical barrier protection, active corrosion inhibition, and visual corrosion monitoring. UV–vis absorption spectra and electrochemical impedance spectroscopy (EIS) results demonstrate that the BZ-P nanocontainers not only provide effective corrosion inhibition but also exhibit rapid, pH-triggered release of Phen in mildly acidic conditions. After incorporation into an epoxy matrix, the resulting BZ-P/EP composite coating exhibits a high low-frequency impedance modulus (|Z| f = 0.01 Hz ) of 4.1 × 10 10 Ω cm 2 after 60 days of immersion in 3.5 wt% NaCl solution, which is approximately 2270 times higher than that of the neat epoxy coating. This improvement is accompanied by a significant reduction in oxygen content on the underlying steel surface (from 19.56 wt% to 0.62 wt%), indicating markedly suppressed corrosion. Under damaged coating conditions, the BZ-P/EP system maintains effective corrosion protection, as evidenced by a relatively high impedance modulus and low local admittance. This enhanced performance can be attributed to the synergistic effects of BN and ZIF-8, which combines structural barrier reinforcement with active corrosion inhibition. Furthermore, the released Phen molecules at damaged sites coordinate with Fe 2+ ions to form a red complex, enabling rapid and intuitive visual detection of corrosion initiation. This work provides a novel strategy for developing intelligent coating systems that integrate corrosion protection, active corrosion inhibition, and real-time monitoring, offering significant potential for applications in harsh service environments.
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产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2026
·
IF 3.4
Huang Zewei,Wang Yingjie,Ye Meiying,Cheng Heyong
Real-time, online and accurate detection of ferric/ferrous ions is quite important for environmental protection and healthcare, which is preferred by portable fluorescent sensors (in solid state) compared to previous sensors (dominant in liquid or turbid suspensions) associated with susceptibility to oxidation and precipitation. Considering the scarcity of the solid-state fluorescent sensors, a nitrogen-doped carbon quantum dots (NCQDs) encapsulated ZIF-8 (NCQD@ZIF-8) photonic crystal (PC) sensor for Fe 3+ and ascorbic acid detection in solid state was constructed by rapid evaporation self-assembly technique. The fluorescence intensity of NCQD was enhanced with slow light effect of ZIF-8 PC. Fe³⁺ was selectively detected based on its ability to quench the fluorescence of QDs@ZIF-8 PC through a combination of the internal filter effect and possible Fe 3+ −QDs complexation. Detection of ascorbic acid (AA) was based on the fact that AA can recover the fluorescence intensity of the NCQD@ZIF-8 PC quenched by Fe 3+ due to AA reduction of Fe 3+ to Fe 2+ . Both Fe 3+ and ascorbic acid can be quickly and selectively detected by the NCQD@ZIF-8 PC sensor in the linear range of 0. 1− 10 mmol L − 1 (R 2 = 0.996) with detection limits of 0.06 mmol·L − 1 and 100 µL sample consumption. Iron speciation analysis (Fe 3+ and Fe 2+ ) in simulated water samples was realized with good precision and accuracy. The NCQD@ZIF-8 PC sensor provided a rapid and portable way for determination of Fe 2+ /Fe 3+ in environmental samples and new possibilities for device fabrication. Graphical
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 7.1
Jinli Fu,Lingling Zhang,Jiahao Yuan,Zhenyu Li,Chunhua Luo,Hechun Lin,Hui Peng
S-scheme heterojunction nanozyme (C 3 N 4 @CDs-ZIF) in hydrogel for photo-/piezo synergy. • Tunable multienzyme-like activities (POD/OXD/CAT/SOD) to UV/Vis/NIR and ultrasound. • Built-in E-field suppresses recombination, enabling 92.5% RhB and 96.47% S. aureus kill. • Microenvironment regulation for infected diabetic wound healing achieves 85% closure by day 12. Inspired by the multienzyme-like cascade of natural antioxidative systems, we report a sustainable photoluminescent hydrogel platform (PAM:C 3 N 4 @CDs-ZIF) engineered with synergistic photo-/piezoelectric enhancement. By constructing an S-scheme heterojunction between carbon nitride (C 3 N 4 ) nanosheets and carbon dot-functionalized ZIF-8 (CDs-ZIF) within a polyacrylamide matrix, the hydrogel integrates multiple enzyme-mimicking activities, including peroxidase (POD), oxidase (OXD), catalase (CAT), and superoxide dismutase (SOD). The catalytic activities are tunable and stimulus-enhanced under multi-wavelength photoexcitation (UV/Vis/NIR) and ultrasound-induced piezoelectric stimulation. Band-structure analysis, ultraviolet photoelectron spectroscopy (UPS), electron spin resonance (ESR) spectroscopy, and transient photocurrent response collectively support an S-scheme charge-transfer pathway, in which interfacial electric-field-assisted charge separation promotes reactive oxygen species generation and conversion. As a result, the hydrogel achieves 92.5% Rhodamine B degradation within 5 min under combined UV/ultrasound stimulation and exhibits 96.47% antibacterial efficiency against Staphylococcus aureus . In addition, an infected diabetic wound model demonstrates accelerated wound closure, suggesting the potential of this adaptive catalytic hydrogel for antibacterial tissue repair. This work provides a rational strategy for designing smart, energy-stimulated hydrogel nanozymes for environmental remediation and biomedical applications. Download: Download high-res image (173KB) Download: Download full-size image
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DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 30
·e73950
·
IF 2.3
Qiuping Fu,Jialin Wang,Chunmei Zhang,Lei Zha,Jing Hu,Pan Wu
A composite aerogel of zeolitic imidazolate framework-67 (ZIF-67) and agarose (AG), denoted as ZIF-67@AG, was successfully prepared for efficient removal of malachite green (MG). Comprehensive characterization confirmed the successful formation of the composite: X-ray diffraction (XRD) patterns retained the characteristic peaks of ZIF-67, scanning electron microscopy (SEM) revealed uniform dispersion of ZIF-67 within a porous AG network, Fourier transform infrared spectroscopy (FT-IR) confirmed the characteristic functional groups of both components, and x-ray photoelectron spectroscopy (XPS) verified the presence of constituent elements. Batch adsorption experiments were conducted to investigate the effects of contact time, adsorbent dosage, solution pH, coexisting ions, and temperature on MG removal. The adsorption equilibrium data were well fitted by the Langmuir isotherm model, with a calculated maximum adsorption capacity of 1112 mg·g −1 . Kinetic analysis revealed that the pseudo-second-order model provided the best fit, suggesting a chemisorption-dominated process. Thermodynamic studies confirmed that the adsorption was spontaneous and endothermic. Furthermore, the ZIF-67@AG composite showed good reusability, maintaining a removal efficiency above 79% after six adsorption–desorption cycles. These results demonstrate that ZIF-67@AG is a promising adsorbent for the efficient removal of MG from wastewater. Graphical ZIF-67@AG aerogel was fabricated via a physical blending strategy for MG removal. ZIF-67@AG exhibited a maximum adsorption capacity of 1112 mg·g −1 . Moreover, it retained 79.69% removal efficiency after six methanol-regeneration cycles, demonstrating excellent recyclability for sustainable wastewater treatment.
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产品关联
DOI
高影响因子
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