MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Lei Zhang,Zhen Zhao,Hongming Zhang,Wanli Jiao
To detect trace hydrogen sulfide (H 2 S) safely, more sensitively and less expensively, a new synthesized ZIF-8-derived ZnO-supported Ag nanoparticle assemblies have been investigated. In the successful formation, ZIF-8 was synthesized in room temperature aqueous solution, followed by ultrasonication to produce Ag + /ZIF-8 compounds, and yielded Ag/ZnO assemblies after sintering. Various characterizations have been done to confirm the morphology, surface chemical state and electron distribution by XRD, SEM, XPS, BET and DRIFT. The sensing test results indicate that at an exciting operating temperature of 100 °C, the A-2 labeled sensor exhibits excellent H 2 S detection capabilities, including a response value of 104 for 2.5 ppm H 2 S, the minimum detection limit of 1.1 ppb, satisfied selectivity, significant resilience against humidity and long time stability. More significantly, a valuable test of 140 h real time detection of the H 2 S emission from fresh fish meat has been performed successfully, providing effective data for protein spoilage assessment. Rhombic dodecahedron structure, catalysis of Ag nanoparticles and overflow effect of H 2 S result in the distinct sensing mechanism, providing novel insights and theoretical foundations for developing highly efficient trace H 2 S gas sensors.
研究领域:
材料科学
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传感器技术
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环境监测
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产品关联
DOI
高影响因子
RSC Advances
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2020
·Vol. 10
·期 24
·13998-14006
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IF 3.119
Jun Zhang,Xiuyang Zhao,Xuefeng Liu,Chuan Dong
Two organic molecules, pyridoxal hydrazide (PAH) and salicylaldehyde based Rhodamine B hydrazone (RBS) were integrated into zeolitic imidazolate framework-8 (ZIF-8) to give composites, namely PAH/ZIF-8 and RBS/ZIF-8. The organic molecules and ZIF-8 are proposed to be assembled via hydrogen bonds and π–π stacking in the composites. The mass fraction of PAH and RBS in the composites was calculated to be 21.86% and 29.3%. The fluorescence of PAH/ZIF-8 is quenched regularly by Cu2+. The detection limit for Cu2+ was calculated to be 1.42 nM for PAH/ZIF-8, which is one order of magnitude lower than that of PAH. The detection limit for Cu2+ was determined to be 0.8 μM for RBS/ZIF-8, which is three times lower than that of RBS. The two composites both display high selectivity to Cu2+ over competing metal ions. The PAH/ZIF-8 fluorescent sensor was successfully applied to Cu2+ determination in environmental water. PAH/ZIF-8 exhibits excellent cell membrane permeability and low cytotoxicity in cellular imaging. The enhanced chemical sensor was designed by introducing small molecules into ZIF-8 for the specific recognition of Cu2+.
研究领域:
化学传感
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材料科学
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生物医学工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2016
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IF 3.299
Chuan Ding,Xinru Zhang,Chuncheng Li,Xiaogang Hao,Yonghong Wang,Guoqing Guan
In recent years, zeolitic imidazolate framework-8 (ZIF-8) has received tremendous attention due to its hydrophobic inner channels and good compatibility with the polymer as an inorganic filler for preparation of the mixed matrix membrane (MMM). In this study, ZIF-8 particles were synthesized and incorporated into Ploy (ether block amide) matrix (PEBA-2533) to fabricate a MMM for the enhancement of phenol permselective pervaporation. The structure and morphology of ZIF-8 particle and the obtained MMMs were characterized by XRD, SEM, FTIR, contact angle and BET. It is found that the hydrophobicity of the membrane was enhanced by the incorporation of hydrophobic ZIF-8, and the obtained MMM withstand the extreme operation conditions of pervaporation. The effects of particle loading amount, feed concentration and temperature on the separation performance of ZIF-8 incorporated MMMs were investigated in details. Compared with the pure PEBA-2533 membrane, the permeate flux of ZIF-8 incorporated PEBA-2533 MMM with a 10 wt% loading amount was significantly increased from 846 g m −2 h −1 to 1310 g m −2 h −1 , while the separation factor increased from 39 to 53 at 70 °C with 8000 ppm feed phenol concentration. The enhancement of the pervaporation performance could be mainly attributed to the preferential highly permeable regions of the bimodal membrane structure for phenol molecules, which was consisted of ZIF-8 particles. Finally, both of the excellent overall membrane pervaporation performance and the long-term revealed that such a ZIF-8 incorporated MMM has a great potential in separation and recovery of phenol from its aqueous solution for a practical process.
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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产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2018
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IF 3.972
Pengfang Zhang,Yun Xiao,Hui Sun,Xiaoping Dai,Xin Zhang,Haixia Su,Yuchen Qin,Daowei Gao,Axiang Jin,Hai Wang,Xiubing Wang,Shigang Sun
Morphology-controlled synthesis of metal–organic frameworks (MOFs) is of tremendous importance to understand the morphology–structure–property relationships. Although great emphasis has been placed on the controllable synthesis of MOFs, the preparation of hollow and nanoframe-like MOFs, especially using the microwave irradiation method, remains a great challenge. In the present work, we report microwave-assisted synthesis of hollow butterfly and ring zeolitic imidazolate framework-8 (ZIF-8) with the stimuli of Ni ions. Interestingly, the sphere, butterfly, and fiber ZIF-8 catalysts were also fabricated when adjusting the weight ratio of Zn and Ni resources. Specifically, sphere, butterfly, hollow butterfly, and ring particles have maintained the ZIF-8 structure. On the basis of the time sequential experiments, we inferred that the formation of hollow butterfly and ring particles is driven by the change of surface energy. The Knoevenagel reaction was carried out to explore the catalytic activity of these ZIF materials. The ring particles with ZIF-8 structure showed the highest catalytic activity. The open structure, thin walls, and the amount of basicity have been extensively discussed to shed light on the superior catalytic performance of ring particles.
研究领域:
材料科学
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催化化学
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产品关联
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
Chenyang Wang,Jihui Wang,Wenbin Hu
ZnO@ZIF-8 films were prepared on Q235 steel surface through solvothermal reaction by pre-electrodepositing ZnO films and modified with stearic acid (SA). The surface morphology , elements content, crystal structure and chemical structure of films were studied by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The wettability of films was measured by water contact angle meter. The corrosion behavior of films was tested by Electrochemical tests. ZnO films show hexagonal nanotubular morphology, having the best compactness and corrosion resistance at deposition current density of 2.3 mA/cm 2 with the protection efficiency of 90.11%. After solvothermal reaction, ZIF-8 grains are formed and clad ZnO nanotubes , forming a contact film to prevent corrosive ions attacking steel efficiently. ZnO@ZIF-8 films have the best compactness and corrosion resistance at Zn 2+ concentration of 0.06 mol/L with the protection efficiency of 99.83%. But the corrosion resistance of ZnO@ZIF-8 film declines quickly for the water molecules can get inside the film and destroy the bond between ZIF-8 grains. Thus, SA was grafted to ZnO@ZIF-8 film to enhance its hydrophobicity . After SA modification, the protection efficiency reaches 99.99% and maintains at 95.29% after 14 days immersion in the solution of 3.5 wt.% NaCl .
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yixin Pan,Bo Sun,Yingying Zhou,Jian Jiao,Liping Deng,Xiaowu Dong
This study reported a Ni 0 @ZIF-8 nanocomposite synthesized via co-precipitation that synergistically integrated the high adsorption capacity of ZIF-8 with the redox activity of zero-valent nickel (Ni 0 ) for efficient uranium(VI) extraction. The composite with an optimized 1:1 ZIF-8:Ni 0 molar ratio achieved an exceptional adsorption capacity of 830.5 mg/g. Kinetic and thermodynamic analyses confirmed chemisorption-dominated monolayer adsorption following pseudo-second-order kinetics (R 2 > 0.999) and spontaneous endothermic behavior. Mechanistic investigations through spectroscopy and density functional theory (DFT) calculations revealed a dual-function mechanism that ZIF-8 facilitated U(VI) capture through electrostatic/coordination interactions, while Ni 0 mediated partial reduction of U(VI) to U(IV) via electron transfer, enhancing immobilization stability. Notably, only Pb 2+ , Cu 2+ , Cr 6+ , and organic ligands inhibited adsorption through redox competition and solution complexation. Comparative studies demonstrated minimal matrix interference-deionized water versus seawater systems exhibit merely 4.7 % deviation in adsorption efficiency at trace U(VI) concentrations (0.1–0.6 mg/L). Critically, direct uranium extraction from unprocessed natural seawater (ambient U: 4.27 μg/L) with only pH adjustment (5.0) achieves 86.02 % efficiency at ultra-low adsorbent dosage (0.001 g/L), yielding residual uranium concentrations of 0.597 ± 0.04 μg/L. By harmonizing adsorption and redox pathways, Ni 0 @ZIF-8 overcome limitations of conventional materials, establishing itself as a paradigm-shifting solution for uranium remediation in complex ionic matrices and real marine environments.
研究领域:
环境科学
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材料化学
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核化学
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水体修复
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密度泛函理论
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Dan Li,Feigao Xu
ZIF-8@GO-X (X = 0, 2.48%, 4.07%, 7.83%, and 20.03%) composites were prepared using GO and ZIF-8. The composites were used to absorb Cu(Ⅱ) from aqueous solutions. With increasing GO content, the adsorption of the ZIF-8@GO-X composites first increased and then decreased. The Cu(Ⅱ) adsorption of ZIF-8@GO-7.83% reaches a maximum among ZIF-8@GO-X composites (X = 0, 2.48%, 4.07%, 7.83%, and 20.03%). The adsorption kinetics , adsorption isotherm , adsorption thermodynamics, and adsorption mechanism of Cu (II) by ZIF-8@GO-7.83% were studied in this paper. The results showed that the adsorption reached equilibrium at 120 min, and ZIF-8@GO-7.83% approached equilibrium relatively quickly. When the temperature was 45 °C and the Cu(Ⅱ) concentration was 40 mg/L, the maximum adsorption capacity of ZIF-8@GO-7.83% for Cu(Ⅱ) reached 482.29 mg/g. The equilibrium data and kinetics were well described by Langmuir and pseudo-first-order models, respectively. Final experiments with real factory wastewater (initial Cu(Ⅱ) concentration of 670 mg/L) revealed that 0.37 g/L ZIF-8@GO-7.83% can efficiently reduce the Cu(Ⅱ) concentration to below 2 mg/L.
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
Inorganic Chemistry Frontiers
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2021
·Vol. 9
·期 1
·165-178
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IF 6.569
Ning Yang,Linjie Lu,Linhua Zhu,Peiwen Wu,Duanjian Tao,Xiaowei Li,Jiahong Gong,Linlin Chen,Yanhong Chao,Wenshuai Zhu
Porous ionic liquids (PILs), with permanent porosity and fluidity, have been drawing great attention in theoretical research and application. Herein, a novel PIL (HPMo@ZIF-8-PIL) was fabricated by dispersing a phosphomolybdic acid-modified zeolitic imidazolate framework-8 (ZIF-8) into an ionic liquid for deep reactive extraction desulfurization. Size calculation results show that 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonylimide) ([Emim][NTf2]) with larger ion sizes cannot occupy pores of ZIF-8. In detail, the structure along with permanent porosity was well characterized by gas absorption and molecule displacement experiments, and it was found that HPMo@ZIF-8-PIL can not only promote the dispersion of the catalytically active sites but also retain the good liquidity and excellent extraction ability of ionic liquids. At room temperature, 100% removal of dibenzothiophene sulfur in a model oil could be achieved within 2 h using HPMo@ZIF-8-PIL and hydrogen peroxide as the catalyst and oxidant, respectively. Besides, the successful preservation of porosity increases the probability of contact between the oxidant and active sites, which is also in favor of the promotion of desulfurization performance. This work offers a new method for the modification of porous frameworks to construct PIL catalysts, which will provide a new insight into the application of PILs.
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
COLLOIDS AND SURFACES B-BIOINTERFACES
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2025
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IF 5.6
Long Li,Yuyang Zhang,Yujie Liu,Zetao Wang,Luyao Cheng,Yuhan Du,Yangyi Nie,Jing Long,Cairong Li,Yuanchi Zhang,Wei Zhang,Lin Yang,Yuxiao Lai
Background Bone defects pose a significant clinical challenge due to their high morbidity and long-term disability. Simultaneous enhancement of osteogenesis and angiogenesis holds promise for accelerating bone regeneration. MicroRNAs (miRNAs), particularly miR-126, are critical regulators of angiogenesis; however, their therapeutic application requires efficient delivery systems. Designing miRNA carriers with intrinsic osteogenic activity remains a pivotal yet underexplored strategy. Methods Zeolitic imidazolate framework-8 (ZIF-8) was developed as a nanocarrier to deliver proangiogenic miR-126. The miR-126@ZIF-8 nanocomposites were synthesized via a one-pot method, and their physicochemical properties, miRNA loading efficiency, and cytotoxicity were systematically characterized. Cellular uptake, miR-126 release kinetics, and Zn 2 + dissolution was evaluated in vitro . Angiogenic and osteogenic effects were assessed through gene expression analysis, capillary-like tube formation assays, and mineralization studies. Results and discussion The miR-126@ZIF-8 nanoparticles exhibited a high miRNA loading capacity, efficient cellular internalization, and minimal cytotoxicity. Upon intracellular delivery, the nanoparticles decomposed to release miR-126 and Zn 2+ , synergistically enhancing angiogenic (e.g., VEGF, HIF-1α) and osteogenic (e.g., RUNX2, OCN) gene expression. Functional assays demonstrated significant improvements in endothelial cell tube formation and osteoblast mineralization compared to controls. Conclusion Our work presents miR-126@ZIF-8 as a novel dual-functional platform that simultaneously promotes angiogenesis and osteogenesis. By combining the proangiogenic action of miR-126 with the osteoinductive potential of Zn 2+ , our nanocomposite offers a promising strategy for vascularized bone regeneration for the repair of bone defects.
研究领域:
医学
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生物材料学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Rui Ding,Ziheng Li,Yan Dai,Xiangcun Li,Xuehua Ruan,Jiaming Gao,Wenji Zheng,Gaohong He
The amino functionalization of MOFs has been verified to be effective in improving the selective permeation of CO 2 . However, the introduction of amino groups into ZIF-8 by mixed ligands strategy is hard to achieve due to the high steric hindrance of benzene ring in 2-aminobenzimidazole ligand, resulting in insufficient content of amino groups. Therefore, in this work, polystyrene-acrylate (PSA) template is proposed to provide abundant adsorption and reaction sites for the rapid synthesis of NH 2 -ZIF-8 with high content of 2-aminobenzimidazole. Furthermore, the incomplete etching strategy is used to construct PSA modified hollow NH 2 -ZIF-8 nanospheres (PHNZ). Importantly, the thickness of PSA layer and the hollow size are adjusted by the etching time, as revealed by the SEM and TEM images. In this PHNZ, the modified PSA can provide good interface compatibility between PHNZ and Pebax matrix to enhance the CO 2 selectivity, while the hollow structure can reduce the mass transfer resistance and improve the gas permeability. Moreover, the introduced amino groups can enhance the CO 2 affinity of PHNZ and further improve the CO 2 /N 2 selectivity of the PHNZ-based mixed matrix membranes (MMMs). Benefiting from the synergy of good interface compatibility and enhanced CO 2 affinity from the amino groups, the PHNZ/Pebax MMMs present greatly improved CO 2 /N 2 selectivity in contrast with pure Pebax and NH 2 -ZIF-8 based membranes. Besides, as the etching time increases, the PHNZ-2 and PHNZ-3 based MMMs present a higher CO 2 permeability than that of NH 2 -ZIF-8 based MMM, revealing the significance of the hollow structure. The PHNZ-2/Pebax MMM with filler loading of 10 wt% expresses the best gas separation performance with the CO 2 permeability of 121.9 Barrer and CO 2 /N 2 selectivity of 96.6, respectively, showing an increase of 54.7 % and 98.0 % in contrast with pure Pebax membrane. Meanwhile, this CO 2 separation performance is far beyond the Robeson upper bound in 2008 and close to the McKeown upper bound in 2019, demonstrating that the proposed PHNZ displays a promising and competitive potential in MMM based CO 2 capture.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
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IF 8.025
Rongtao Liu,Yiyu Pang,Tianhua Xiao,Shiyang Zhang,Yidong Liu,Yonggang Min
Polycaprolactone (PCL) nanofibers have become an ideal material for bone tissue engineering due to a series of advantages. Considering the clinical treatment of bone defects, in addition to meeting the golden standard, PCL based nanofibers also need to be multifunctional to anti-inflammatory, antibacterial properties, and enhance the bone regeneration and repair. Herein, we successfully developed the multifunctional PCL/LIG/ZIF-8 composite nanofibers by loading ZIF-8 on electrospun PCL/lignin (PCL/LIG) nanofibers. The prepared composite nanofibers exhibit fairly good wettability and acceptable degradation rate, as well as excellent antioxidative stress and antibacterial properties originating from the incorporated LIG and loaded ZIF-8. Moreover, owing to the synergistic effect of LIG and ZIF-8, the composite nanofibers present excellent osteogenic differentiation, which can be verified in biomineralization experiments and real-time quantitative polymerase chain reaction. These results indicate that the PCL/LIG/ZIF-8 composite nanofibers, as potential healthcare candidate, have a promising applied in the treatment of bone defects.
研究领域:
生物材料学
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组织工程学
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医学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Nanqi Shi,Haiyan Li,Xin Li,Hongxin Luo,Jiaying Jin,Jiayu Wang,Shuang Li
Two-dimensional hexagonal boron nitride (h-BN) has excellent corrosion resistance and barrier ability, showing unique advantages in the field of anti-corrosion. The h-BN was assembled with Zeolite imidazolate framework material (ZIF-8) and benzimidazole (BI), and an active filler (h-BN/ZIF-8@BI) with shielding and active corrosion resistance was prepared. Zeolite imidazolate framework material was in-situ grown on h-BN surface and loaded with benzimidazole (BI), prepared an active anticorrosive filler with high shielding property (h-BN/ZIF-8@BI). The microstructure, crystal form, element composition, corrosion inhibition ability and thermal stability of h-BN/ZIF-8@BI were studied. The barrier, corrosion inhibition and anti-friction properties of EP/h-BN/ZIF-8@BI combined with F51 epoxy resin were explored. EIS test shows that the corrosion inhibition efficiency of h-BN/ZIF-8@BI is as high as 81.8 %. The impedance modulus of the steel matrix protected by the composite coating was about 2 orders of magnitude higher than that of the control sample, showing excellent barrier ability. In addition, the salt spray test proves that the composite coating has excellent corrosion inhibition characteristics. Taber testing machine shows that the wear mass loss of EP/h-BN/ZIF-8@BI coating is 34.5 % lower than that of EP coating. This work provides a novel idea for the preparation of high barrier, active anticorrosive and wear resistant anticorrosive coatings, and provides a new horizon of the composite coatings.
研究领域:
材料科学
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腐蚀防护
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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）