ACS Agricultural Science & Technology
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2025
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IF 2.9
Xiyue Zhang,Kui Sun,Zheng Zhang,Jun Yang
Plant pathogens pose significant threats to agricultural productivity and economic stability; therefore, the development of green broad-spectrum fungicides is critical to the long-term sustainability of agriculture. Here, zeolitic imidazolate framework nanoparticles (ZIF-8 NPs) with different charge properties were synthesized by a one-pot method and modified by different surfactants under the condition of a water phase at room temperature, which had an excellent bactericidal effect on model Gram-negative bacteria (Escherichia coli) and plant pathogenic bacteria (Xanthomonas axonopodis pv. citri and Pseudomonas syringae). Notably, the IC90 values of CTAB@ZIF-8 NPs for these bacterial strains were all below 50 μg/mL. In addition, ZIF-8 NPs also had antibacterial effects on fungi (Magnaporthe grisea) and oomycetes (Phytophthora infestans). ZIF-8 NPs can destroy the cell wall and cell membrane, eliminate the biofilm, produce ROS, cause DNA damage, and lead to cell death. Together, this work may provide ideas for the development of a promising, sustainable, efficient, broad-spectrum agricultural antimicrobial agent.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
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IF 3.9
Sui Xingyu,Hu Zhengwen,Peng Lin,Shu Yong,Jiang Luming,Zhao Guixiang
With the rapid progress of urbanization and industrialization, water pollution has become an increasingly serious issue, particularly due to dye wastewater, which contains numerous harmful substances and is difficult to treat effectively. Dye wastewater contains many harmful substances and is difficult to treat effectively. Traditional treatment methods are often inefficient and economically unsustainable. In contrast, membrane separation technology offers high separation efficiency and environmental benefits, making it a promising approach for water purification. Therefore, in this paper, the hydrophilic modification of PVDF membranes was carried out by adding ZIF-8 and chitosan(CS), and at the same time, the membranes were endowed with the ability of light self-cleaning. ZIF-8, a metal–organic framework (MOF) material, was synthesized using water as the solvent through the reaction of zinc nitrate with 2-methylimidazole. The PVDF membranes were modified by physical co-mingling, and ZIF-8/CS/PVDF composite membranes with different contents of ZIF-8 and CS were prepared by the submerged precipitation phase transition method. The performance test results demonstrated that the composite membranes doped with ZIF-8 and CS exhibited significant improvements in water contact angle, pure water flux, and dye wastewater treatment performance. Notably, the modified membranes showed exceptional dye removal efficiency and enhanced resistance to membrane fouling. Furthermore, the results of photocatalytic self-cleaning experiments revealed that the modified membranes effectively degraded Congo red and methylene blue dyes under Xenon lamp irradiation, highlighting their excellent photocatalytic self-cleaning capability. These findings suggest that the ZIF-8/CS/PVDF-modified membrane holds great potential for water treatment and self-cleaning applications, achieving up to 93.06% dye rejection and a pure water flux of 95.89 L m −2 h −1 , more than double that of the pristine PVDF membrane.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
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IF 9.2
Yiting Cheng,Mingming Ding,Bin He,Gaigai Duan,Chunmei Zhang,Xiaoshuai Han,Shuijian He,Shaohua Jiang
The sluggish kinetics of the anodic oxygen evolution reaction (OER) severely limits the overall efficiency of water electrolysis. To overcome this critical bottleneck, we designed a self-supporting composite electrocatalyst by growing Ni-Fe layered double hydroxide (NiFe-LDH) nanosheets on zeolitic imidazolate framework-8 (ZIF-8) derived N doped porous carbon nanofibers (NCNFs). The in-situ pyrolysis process creates a dense, highly conductive mesoporous network within the carbon framework. Meanwhile, the vertical growth of NiFe-LDH helps alleviate catalyst agglomeration, thereby increasing active site exposure and accelerating mass transportation during reactions. Consequently, the optimized electrode exhibits excellent catalytic performance, achieving a low overpotential of 216 mV at 10 mA cm −2 , a Tafel slope of 62.3 mV dec −1 , and sustained long-term stability over 50 h at 50 mA cm −2 under the tested laboratory condition. Crucially, comprehensive density functional theory calculations rationalize the enhanced electrocatalytic kinetics by revealing strong interfacial electronic coupling. This unique electronic redistribution optimally upshifts the d band center of the active metal sites and significantly lowers the energy barrier of the rate-determining step from 2.14 eV to 1.56 eV. This work provides deep mechanistic insights and a feasible structural engineering strategy for developing highly efficient bimetallic electrocatalysts for future sustainable energy conversion applications.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2023
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IF 5.7
Zhike Wang,Zhihang Chen,Cunling Ye
Background The precise design or functionalization of metal organic frameworks (MOFs) based on the properties of organic dyes is a promising direction in environment remediation. Methods Herein, using methyl orange (MO) as the target dye, cetylpyridinium bromide (CPB) functionalized ZIF-8 (CPB@ZIF-8) was fabricated by the post-synthetic modification strategy. Significant findings The surface area and the pore volume of CPB@ZIF-8 are greatly reduced compared with pure ZIF-8. However, the introduction of amphiphilic CPB molecules into ZIF-8 can significantly enhance the adsorption performance of MO. This enhanced MO adsorption capacity can be attributed to the incorporation of more positively charged sites, hydrophobic sites and aromatic rings in the CPB-modified ZIF-8 frameworks, which provides the electrostatic attractions, the hydrophobic and π-π interactions that mainly govern the adsorption of MO on CPB@ZIF-8. The pseudo-second-order kinetic model and the Langmuir isotherm model can well represent the adsorption process of MO. The maximum adsorption capacity (195.54 mg/g) has been obtained at 30 °C, outperforming pristine ZIF-8 and various reported absorbents. The prepared CPB@ZIF-8 composite is a superior example of the tunable adsorption affinity of MOFs for anionic dyes.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
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IF 9.5
Qian Chen,Lan Hong,Shang-Kun Jiang,Chun-Xu Zhang,Shan Wang,Wei-Xing Li,Shi-Peng Sun,Mei-Ling Liu
Organic solvent nanofiltration (OSN), due to the characteristics of energy saving, mild operation conditions, and less waste generation, is an effective tool for purification, concentration and solvent exchange of high-value-added products. Introducing an interlayer containing ZIF-8, which features high surface areas and adjustable pore structures , can effectively regulate the interfacial polymerization process to optimize the performance of OSN membranes. However, due to the lack of nucleation sites with the substrate, it remains technologically challenging to design the ZIF-8 interlayer with structure and property persistence for interfacial polymerization under mild conditions. Inspired by the processes of birds’ nesting, the processes of mixing PEG and ZIF precursor, coating, and fast heating are working here to stimulate the in-situ growth of ZIF-8 in a facile, green and ordered way. PEG allows uniform dispersion of ZIF-8 in one step and without involving organic solvents. Furthermore, the increased binding affinity between ZIF-8 and the membrane surface endows the composite membrane with uniform morphology and significantly enhanced stability. Overall, this strategy may provide a fast, eco-friendly, and scalable approach to design composite membranes with MOF and other nanoparticulate materials as interlayers.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
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IF 5.2
Dan Yang,Meng Du,Zia-ud Din,Shikui Yang,Lei Chen,Jie Cai,Jie Pang,Xi Chen,Wenping Ding
The Gum Ghatti (GG)/Konjac Glucomannan (KGM)/zeolitic imidazolate framework-8 (ZIF-8) composite aerogels (GKZ) were synthesized by the sol-gel method and the vacuum freeze-drying method for effective removal of ciprofloxacin (CIP) from contaminated water. The results showed that the addition of different concentrations (0, 0.4, 0.6, 0.8 wt%) of GG could promote homogeneity but weakened the molecular interaction of the aerogel system without water. Remarkably, the ZIF-8 maintained the crystal structure, as well as its dispersion on the surface of aerogel, was significantly improved. Additionally, it was also found that the incorporation of moderate GG was favored regarding CIP adsorption, and GKZ with 0.6 % GG (GKZ0.6) exhibited the highest adsorption capability for CIP around 1035.4 mg/g. Besides, the effects of various ions, ionic strength , and pH on CIP adsorption were also investigated, which provided the reference for guiding the utilization of GKZ0.6. Furthermore, at fewer cycles, the adsorption efficiency of GKZ0.6 on CIP showed less loss. These features revealed that the GKZ composite aerogels might be a promising adsorbent for CIP removal from water.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
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IF 9.5
Ning Li,Chao Ma,Mao Ye,Xiangyu Guo,Zhihua Qiao,Chongli Zhong
Mixed-matrix membranes (MMMs) have arisen as an energy-saving and efficient candidate for CO 2 separation that can mitigate the greenhouse effect. However, challenges still remain in achieving good filler-polymer compatibility and high separation performance. Herein, a mechanochemistry method is proposed to synthesize an amine-functionalized ultramicroporous ZIF-62 (ZIF-UC-6) with good CO 2 affinity. Amino functional groups and open metal sites are introduced into ZIF-UC-6, which significantly improve its CO 2 adsorption capacity of ZIF-62. According to the ideal adsorption solution theory (IAST) calculation, the CO 2 /CH 4 and CO 2 /N 2 selectivity of ZIF-UC-6 is ∼80 and ∼140, respectively. Besides, when ZIF-UC-6 is incorporated into Pebax, hydrogen bonds can form between filler and polymer, which can increase the interfacial compatibility in the MMMs. The optimized membrane possesses a CO 2 permeability of ∼560 barrer, together with high CO 2 /CH 4 and CO 2 /N 2 selectivity of 41.8 and 86.2, surpassing the corresponding upper bounds. Moreover, the prepared MMMs have good pressure resistance and long-term stability. This work demonstrates an effective route for developing MMMs with good interfacial compatibility and high CO 2 separation performance for potential industrial applications.
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JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Li-hu Qian,Wei-wei Dong,Min-da Xu,Yan-Bo Cao,Xuan Wu,Xiao-jie Song,Yi Ding,Xi Wang
Developing hybrid metal sulfide electrocatalyst with excellent hydrogen evolution reaction (HER) catalytic performance and stability is vital to its commercial applications. Herein, hybrid CuCo 2 S 4 @ MoS 2 catalysts were designed with CuCo 2 S 4 synthesized by using ZIF-67 as a template and externally decorated with MoS 2 . The hybrid catalysts (denoted as C@M-0.5, C@M − 1, C@M − 2) show improved catalytic activity than those of MoS 2 and CuCo 2 S 4 due to large surface area and the interface between nanoflower-like MoS 2 and three-dimensional interconnected lamellar stacked CuCo 2 S 4 , which boost charge transport capability and improve the HER kinetic process. The influences of different ratio of CuCo 2 S 4 to MoS 2 on the electrocatalytic activity are investigated in detail. Specifically, C@M − 1 exhibit the best HER performance with an overpotential of 143 mV@ 10 mA/cm 2 , a Tafel slope of 45.2 mV/dec and satisfactory long-time stability. This work rationally designs hybrid CuCo 2 S 4 @MoS 2 catalyst to preserve the merits of using the ZIF-67 as a template and make use of the synergistic coupling effects between CuCo 2 S 4 and MoS 2 , which can be extended to synthesize other catalysts in different energy conversion fields.
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2022
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IF 4.383
Ningning Zhao,Zhong Yu,Haixia Ma,Ergang Yao,Ting An,Fengqi Zhao,Xiaojiao Yu
Fe 2 O 3 /zeolitic imidazolate framework-8 (ZIF-8) architectures were successfully prepared by a polyvinylpyrrolidone (PVP)-assisted method, which can be as an effective potential catalyst for promoting the thermal degradation of nitrocellulose (NC). Thermal behavior and degradation kinetics of catalyst-NC mixtures were studied using the TG/DTG and DSC methods, and found that the Fe 2 O 3 /ZIF-8-NC pyrolysis possessed a total degradation of 77.96%, a maximum pyrolysis rate temperature of 194.5 °C, and the lowest activation energy of 179.4 ± 16.1 kJ mol −1 , confirming a better thermocatalytic performance of Fe 2 O 3 /ZIF-8 when compared to Fe 2 O 3 and ZIF-8 for NC thermolysis. Furthermore, it can be inferred from the isoconversional analysis, which employs a modified fitting algorithm, that catalyst-NC mixtures and pure NC adhere to the reconstructed “n-order” reaction models. This work showed how a catalyst of the metal oxide/metal-organic frameworks (MOFs) type could improve the pyrolysis of NC, which could serve as a significant reference for the development of additional catalysts of the metal oxide/MOFs for use in NC-based energetic materials.
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JOURNAL OF SOLID STATE CHEMISTRY
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2023
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IF 3.3
Yongmin Chen,Shulan Pu,Dongying Wang,Yongchao Zhang,Guojiang Wan,Qiang Zhao,Yan Sun
Zeolitic imidazolate framework-8 (ZIF-8) was coupled with AgBr using a facile deposition–precipitation method to synthesize AgBr@ZIF-8 composites. The photocatalytic activity of prepared photocatalysts was evaluated by the degradation of Rhodamine B (RhB). As expected, the photocatalytic activity of the AgBr@ZIF-8 photocatalysts was superior to that of ZIF-8 and AgBr. Among the AgBr@ZIF-8 photocatalysts, AgBr@ZIF-8 with a ZIF-8 loading of 5 wt% exhibited the highest photocatalytic efficiency of 99.5 % within 15 min. The remarkable photocatalytic activity of the AgBr@ZIF-8 composites was attributed to the heterojunction between ZIF-8 and AgBr, which reduced the recombination rate of electron-hole pairs, thereby enhancing the photocatalytic efficiency of the catalysts. According to the trapping experiment, superoxide radicals (•O 2 - ) and holes (h + ) were certified as the main species in the efficient removal of RhB.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 98
·期 5
·1166-1174
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IF 3.4
Min Yuan,Zhiqing Liu,Tiantian Lv,Jinxiang Dong,Qi Shi
BACKGROUND The separation of furfural from a low-concentration multicomponent and acid-containing aqueous solution is a highly demanding process; traditional distillation requires an excessive amount of energy. Herein, we demonstrated ZIF-8-derived microporous carbon (C) as a promising adsorbent for the separation of furfural using adsorption isotherms, dynamic column adsorption, adsorption kinetics and desorption studies. RESULTS In the competitive adsorption kinetics experiments with a furfural/acetic acid concentration of 50/20 g L −1 , the acetic acid adsorbed in the micropores of NC ZIF-8 1000C-800A gradually was replaced by furfural, whereas the amount of acetic acid in the mesopores of NC ZIF-8 800C-800A slowly increased. In addition, the micropores of NC ZIF-8 1000C-800A exhibited highly efficient and fast adsorption characteristics toward furfural over a wide furfural/acetic acid concentration range (0–50/0–20 g L −1 ) with the furfural adsorption capacity reaching an adsorption equilibrium within 10 min. The results show that the high Brunauer–Emmett–Teller surface area of NC ZIF-8 1000C-800A is responsible for the high furfural adsorption capacity (1205.3 mg g −1 ) and the confined microporous structure can strengthen the π–π interactions between porous C and furfural, thereby enhancing the selectivity of furfural/acetic acid (61.4) in the furfural/acetic acid (50/20 g L −1 ) dynamic column adsorption system. Meanwhile, the desorption ratio of furfural in the dynamic desorption system reached as high as 98.6%. CONCLUSION The unique micropore-confinement effect and excellent adsorption behavior make NC ZIF-8 1000C-800A an efficient adsorbent for furfural in the furfural–acetic acid system. © 2023 Society of Chemical Industry (SCI).
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2023
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IF 6.1
Liusha Cen,Tao Tang,Fan Yu,Han Wu,Chengcai Li,Hailin Zhu,Yuhai Guo
Semiconductor−metal–organic framework (MOF) hybrid photocatalysts become a significant material to treating dyeing wastewater recently. Zinc-based metal–organic framework (ZIF-8) stands out among numerous photocatalysts for its stability and simplicity to prepare. In this work, the gourd-shaped ZIF-8/TiO 2 nanocomposites are prepared in situ on anatase TiO 2 by precursor method, and then ZIF-8/TiO 2 nanocomposites is supported on PVDF electrospinning nanofibers by blending method to form ZIF-8/TiO 2 nanofibers (ZIF-8/TiO 2 NFs). We compare the degradation ability of Rhodamine B by ZIF-8/TiO 2 NFs with different mass ratios and load rates. When the mass ratio of ZIF-8 to TiO 2 is 2:1 and the loading rate is 10%, the photocatalytic degradation efficiency of ZIF-8/TiO 2 NFs reached 95.4%, and the degradation remained as high as 88.7% after cycling five times. The characterization results showed that ZIF-8 and TiO 2 are connected by N − Ti − O chemical bond, which narrows the band gap and rebars the recombination of the electron-hole pairs. The synergistic action of ZIF-8 and TiO 2 largely improves the photocatalytic capacity of ZIF-8/TiO 2 NFs.
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