ACS Agricultural Science & Technology
·
2025
·
IF 2.9
Bin Sheng,Ying Zhang,Kexin Yang,Xiaobin Wen,Zhihao Lin,Zhijian Wu,Yaowei Zhang,Jie Zhou,Xueling Ye,Miao Wang,Ge Chen,Guangyang Liu,Xiaomin Xu,Xin Yang,Bining Jiao,Donghui Xu
Neonicotinoid insecticides face a number of challenges in improving the efficacy and mitigating resistance in Bemisia tabaci. The zeolitic imidazolate framework (ZIF) in metal–organic frameworks (MOFs) has attracted much attention in the field of nanopesticide preparation and controlled release due to its simple preparation. However, monometallic ZIFs have a simple structure and low loading capacity. To solve this problem, we doped Fe into ZIF-L and successfully synthesized a cross-stacked bimetallic ZIF nanocarrier, which can effectively load and release dinotefuran (DNF). Subsequent preparation of Zn-Fe-ZIF@DNF@MPN after encapsulation using metal–phenolic networks (MPNs) increased the DNF loading to 23.74% and achieved >99% release within 24 h. Zn-Fe-ZIF@DNF@MPN has greater resistance to UV light, retention on vegetable leaves, and resistance to rainwater washout. Dynamic residue analysis confirmed its effectiveness and persistence. In addition, it achieved 86.95% mortality against Bemisia tabaci without inhibiting cabbage seed germination. This work is of strategic importance for the development of a functional and environmentally friendly smart nanopesticide.
研究领域:
农药学
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材料科学
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昆虫毒理学
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环境科学
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产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 20
·4860
·
IF 4.2
Fuyan Zhang,Miaomiao Ma,Shuang Li,Yuting Zhou,Jian Zeng,Meiqi Huang,Qi Sun,Tao Le
In the critical domain of wastewater treatment, the development of cost-effective, durable, and recyclable adsorbents with high adsorption capacities remains a significant challenge. This study introduces a novel magnetic bimetallic Metal–Organic Framework (MOF) adsorbent, MZIF-67-Co/Cu, doped with copper ions. The MZIF-67-Co/Cu adsorbent was successfully synthesized and structurally characterized, demonstrating remarkable selectivity for removing methyl orange (MO) from water. This high selectivity is attributed to the adsorbent’s high porosity and Lewis base properties at the coordinating metal ion center. The incorporation of Cu ions significantly enhances the porous architecture and increases the number of metal adsorption sites, leading to an impressive maximum MO adsorption capacity of 39.02 mg/g under optimized conditions (0.5 g/L adsorbent concentration, pH 3.0, 250 rpm agitation speed, adsorption time > 10 min). The adsorption kinetics closely follow the pseudo-second-order model, and the isotherm data fit well with the Langmuir model. The primary adsorption mechanisms involve electrostatic attraction and mesoporous interaction. This study highlights MZIF-67-Co/Cu as a highly efficient adsorbent with magnetic recovery capabilities, positioning it as a promising candidate for addressing critical issues in wastewater treatment.
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
PubMed
高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 25
·3601-3608
·
IF 3.304
Somboon Chaemchuen,Kui Zhou,Bibimaryam Mousavi,Marzieh Ghadamyari,Philippe M. Heynderickx,Serge Zhuiykov,Mekhman S. Yusubov,Francis Verpoort
High-quality zeolite imidazole frameworks (ZIF-8, ZIF-67, and bimetallic Zn/Co-ZIF) were synthesized using the spray-drying technique and the mechanism of crystal growth during the whole process is discussed. It is also demonstrated that the crystallization mechanism for N-donor containing ditopic imidazolate (IM) ligands forming ZIF structures is divergent from MOF formation applying carboxylate ligands, and their formation using the spray dry method occurs via a unique mechanism. An intermediate amorphous phase was obtained after spray drying the feed solution, and the crystallographic ZIF structure was obtained during immersion in a solvent. Several characterization techniques, such as FTIR, XRD, SEM, porosity analysis, elemental analysis etc., were applied to examine the characteristic properties of materials, including, intermediate compounds and final products. The results proved that the spray drying procedure is a facile, continuous and effective synthetic route to produce MOFs (ZIFs) in higher quantities with high-quality properties such as high porosity, a large surface area, more active catalyst sites, etc. applying a minimum amount of time and energy which is unusual in common synthesis methods of MOFs.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhichao Li,Bin Jiang,Xiaodong Yang,Haochen Shen,Longfei Zhang,Na Yang,Xiaoming Xiao,Yongli Sun,Luhong Zhang
Co-based bimetallic zeolite imidazolate frameworks (ZIFs) have been shown as promising electrocatalysts for the oxygen evolution reaction, but their electronic structure’s influence on the catalytic performance for overall water splitting still needs further investigation. In this study, Co 15 V-ZIF, structured as two-dimensional (2D) nanosheet arrays, are grown on nickel foam using one-step co-precipitation strategy. Owing to the synergistic effects of vanadium (V) and cobalt (Co) reasonably regulating the electronic structure, the synthesized bimetallic ZIFs demonstrate superior catalytic performance, which required the overpotentials of only 227 and 68 mV to achieve a current density of 10 mA cm −2 in 1 M KOH for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. Furthermore, the water electrolyzer assembled with bimetallic ZIF as cathode and anode exhibits the capability to achieve 10 mA cm −2 at a low cell voltage of 1.57 V. In situ Raman spectroscopy reveals that the introduction of V facilitates the formation of V-CoOOH, the real active site for OER, at lower applied potentials. Besides, it induces a local acidic environment on V-Co(OH) 2 , the real active sites, thereby enhancing the HER performance of the sample. Density Functional Theory (DFT) calculations further show that the synergistic effects of V and Co induce electron redistribution, thereby improving electrical conductivity, reducing the energy barrier for water dissociation and hydrogen adsorption, which promotes the formation of H 3 O + and triggering H 3 O + -induced water reduction in alkaline media. This work provides new insight into tailoring electronic structures to rationally design highly efficient ZIF electrocatalysts.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
Chemistry-An Asian Journal
·
2019
·Vol. 14
·期 23
·4375-4382
·
IF 3.698
Bo Tang,Shuang Li,Wei-Chao Song,Yan Li,En-Cui Yang,Xiao-Jun Zhao,Landong Li
Graphical Sleepy Hollow : A hollow-structured Zn−Co based zeolitic imidazole framework, obtained from post-synthesis chemical etching, serves as a robust heterogeneous catalyst for the cycloaddition of CO 2 with epoxides to yield the corresponding cyclic carbonates. The efficient chemical conversion of carbon dioxide (CO 2 ) into value-added fine chemicals is an intriguing but challenging route in sustainable chemistry. Herein, a hollow-structured bimetallic zeolitic imidazole framework composed of Zn and Co as metal centers (H-ZnCo-ZIF) has been successfully prepared via a post-synthetic strategy based on controllable chemical-etching of the preformed solid ZnCo-ZIF in tannic acid. The creation of hollow cavities inside each monocrystalline ZIFs could be achieved without destroying the intrinsic frameworks, as characterized by field-emission scanning electron microscopy, transmission electron microscopy, and X-ray diffraction technologies. The as-synthesized H-ZnCo-ZIF exhibited remarkable catalytic activity in the cycloaddition of CO 2 with epoxides to the corresponding cyclic carbonates, outperforming the solid ZnCo-ZIF analogue due to the improved mass transfer originating from the hollow structure. More importantly, due to stabilization of metal centers in the ZIF framework by the tannic acid shell, H-ZnCo-ZIF exhibited good recyclability, and no activity loss could be observed in six runs. The present study provides a simple and effective strategy to enhance the catalytic performance of ZIFs by creating a hollow structure via chemical etching.
研究领域:
化学
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材料科学
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催化反应
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Xin Ding,Kexin Yang,Xin Yang,Jie Zhou,Miao Wang,Zhihao Lin,Yaowei Zhang,Donghui Xu,Bining Jiao,Ge Chen,Xiaomin Xu,Lin Qin,Guangyang Liu
At present, it is highly important to develop nanopesticide, which can improve the effect of pesticides and reduce the risks of environmental. Zeolitic imidazolate framework (ZIF) is usually used as a nanocarrier of nanopesticide, which has a porous structure and stimuli-responsive properties. However, the drug loading performance and stability of ZIF are poor. To solve these disadvantages, we successfully prepared bimetallic ZIF nanocarriers by hybridizing and structurally regulating ZIF-L with Co. Here, we propose that Zn and Co bimetallic ZIF (ZnCo-ZIF) was used for efficient loading and controlled release of thiamethoxam (THX). Notably, the specific surface area of ZnCo-ZIF with flower-cluster structure was 8.7338 m 2 /g, which could provide a large number of active sites for THX loading. Besides, it was found that the maximum THX loading rate of ZnCo-ZIF was 12.7% by optimizing the load experimental conditions, which was 1.4 times higher than that initial. After that, ZnCo-ZIF@THX was modified by the metal-phenol network (MPN), which formed through the chelation of tannic acid (TA) and iron ions. In the PBS release medium, the cumulative release rate of the ZnCo-ZIF@THX@MPN reaches 100% for 24h. In addition, the photostability of ZnCo-ZIF@THX@MPN had been greatly improved, which the photodegradation half-life of it was 4.17 times that of THX technical drug. After MPN encapsulation, the maximum retention and rainwater resistance of the nanopesticide on vegetable leaves were also improved. The bemisia tabaci was used as the model insect, and the mortality of ZnCo-ZIF@THX@MPN against was increased to 88.15%. Finally, the safety experiment shows ZnCo-ZIF@THX@MPN had no inhibitory effect on pakchoi seed germination and had good biosafety. This work provides a new idea for the development that the facile synthesis of bimetallic flower-cluster nanocarriers and load of thiamethoxam.
研究领域:
农业科学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2025
·
IF 4.3
Yixin Chen,Zexi Chen,Sheng Chu
Metal–organic frameworks (MOFs) hold significant potential for applications in gas adsorption and separation, catalysis, chemical sensing, and drug delivery. Zeolitic imidazolate frameworks (ZIFs) are a type of MOF composed of metal ions and imidazolate ligands, structurally similar to zeolite structures. ZIF-8, a widely studied ZIF material, is composed of zinc ions (Zn2+) and 2-methylimidazole as fundamental building blocks featuring unique porous structures, a high specific surface area, and excellent thermal and chemical stability. This study introduces a rapid room-temperature synthesis method for bimetallic ZIF-8 through the hydroxide double salt (HDS) precursor. Various characterization techniques confirmed that the synthesized bimetallic ZIF-8 exhibits uniform particle size and high crystallinity. Experimental results indicate that the HDS precursor provides numerous active sites, facilitating rapid nucleation and resulting in uniformly sized bimetallic ZIF-8 particles. By optimizing the ultrasonic time of HDS, the concentration of 2-methylimidazole, and the reaction time, the synthesis conditions were refined, producing bimetallic ZIF-8 particles with an average size of 135.0 nm and a minimum polydispersity index (PDI) of 0.024. Additionally, the copper ion adsorption performance was evaluated, with the synthesized bimetallic ZIF-8 showing the highest adsorption capacity of 1196.82 mg/g at pH 6, demonstrating its effectiveness in heavy metal removal.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Cai Haopeng,Chen Yangdie,Feng Chaochao,Lin Zhenqin
Aimed to address the poor impedance matching of pure tetra-needle ZnO (T-ZnO) as well as to optimise the structure of the wave-absorbing material, this research focused on constructing a bimetallic Zn/Co-ZIF-coated T-ZnO core–shell structure with T-ZnO as a self-sacrificial template. In this work, T-ZnO@Zn/Co-ZIF composites were synthesized by optimizing shell uniformity via modulating DMF/H 2 O solvent ratios (3:1 to 1:1 v/v) and reaction durations (6/24 h). By further pyrolysis, the formation of hollow structures of the derivatives was investigated and the electromagnetic wave absorption performance of the derived materials were evaluated. Optimal core–shell uniformity was achieved at DMF/H 2 O = 3:1 with 24 h reaction time (DH31-24). Pyrolysis at 800 °C (PDH31-24-800) produced hollow Co/C derivatives with complete ZnO volatilization. This material exhibited superior microwave absorption: minimum RL of − 16.40 dB at 14.00 GHz (3.00 mm thickness) and an effective bandwidth (RL ≤ − 10 dB) of 4.48 GHz (11.12–15.60 GHz).
研究领域:
材料科学
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纳米复合材料
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电磁功能材料
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无机非金属材料
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能源材料
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 12
·6629-6639
·
IF 4.682
Lin Jiaxin,Lu Huan,Duan Yingchun,Yu Chenhong,Li Li,Ding Ya-ping
The detection method with potential ability to diagnose drugs in human serum rapidly, highly sensitivity and selectivity is of vital importance for clinical diagnosis. In this paper, an electrochemical sensor on the basis of composite material modified by zeolitic imidazolate framework (ZIF) on carbon nanofiber (CNF) surface is constructed, which is used for ultra-sensitive determination of adrenaline (AD). CoMnZIF-CNF combines the good conductivity of carbon nanofibers and the high electrocatalysis of CoMnZIF, which can improve the reaction activity and the sensing effect of adrenaline. The proposed sensor shows a good linear relationship between AD concentration from 5 to 1000 μM, and the detection limit is 0.22 μM. Meanwhile, CoMnZIF-CNF demonstrated the remarkable selectivity, significant repeatability and stability, as well as excellent reproducibility. Besides, through the analysis of AD in serum electrolyte, the practicability of the sensor was evaluated and the recovery rate was between 97.51 and 102.53%. On the basis of the results, the prepared sensor has a vital application prospect in detecting AD in actual sample analysis.
研究领域:
材料科学
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医学诊断
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电化学分析
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
M. Usman Tahir,Hina Arshad,Heng Zhang,Zhiyan Hou,Jide Wang,Chao Yang,Xintai Su
Single imidazolate framework-67 (ZIF-67) is commonly used as a template to prepare layered double hydroxides (LDHs) with specific morphology to improve the performance of materials. Herein, the Co 2+ ion in ZIF-67 is partially substituted by Ni 2+ to obtain the dodecahedron bimetallic imidazolate framework (CoNi-ZIF). Subsequently, using bimetallic CoNi-ZIF as the sacrificial template, CoNi-LDH hierarchical hollow cage structures with wrinkled nanosheet arrays are synthesized at room temperature and in aqueous solution by an inexpensive and environment friendly surfactant-free approach. The optimized etched CoNi-LDH4 has a maximum specific capacitance of 1877 F g −1 at a current density of 1 A g −1 , and cycling stability of 99.89% after 5000 cycles, which is significantly better than that of ZIF-67 derived CoNi-LDH67 (1357 F g −1 at 1 A g −1 , cycling stability of 73.35%). The asymmetric supercapacitor with CoNi-LDH4 as a cathode and activated carbon (AC) as anode has an energy density of 49.3 Wh kg −1 at 750 W kg −1 power output and stable cycling performance (capacity retention of 92.13% after 5000 cycles). This study shows the prospect of bimetallic CoNi-ZIF derived LDHs nanostructures prepared at room temperature and in aqueous solution to improve the performance and stability of supercapacitors.
研究领域:
材料科学
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电化学
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纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Caiyu Ge,Yuefan Wang,Yilin Wang,Zhifang Liu,Chao Chen,Yixi Xie,Pengcheng Zhao,Junjie Fei
As a natural flavonoid compound found in fruits, vegetables and herbs, luteolin (LU) has potent pharmacological activities and beneficial biological properties. Here, a Fe/Zn bimetallic ZIF pyrolysis-derived Fe-Fe 3 O 4 N-doped mesoporous carbon was in-situ grown on carbon nanofibers (Fe-Fe 3 O 4 -NPC@CNFs), and it was used as an ultrasensitive electrochemical sensing platform for the efficient detection of LU in natural samples. Multiple characterization results show that Fe-Fe 3 O 4 -NPC@CNFs is a dodecahedral particle uniformly grown on CNFs with good crystal structure and uniform elemental distribution. Its rough surface with good mesoporous structure and high specific surface area of 823.19 m 2 /g is beneficial for LU adsorption. The density of states (DOS) and adsorption energies of NPC and Fe-Fe 3 O 4 -NPC further demonstrate that Fe-Fe 3 O 4 -NPC has better electrochemical performance and adsorption effect on LU. Under optimized conditions (carbonization: 800℃, pH: 5.0, enrichment: −0.2 V for 400 s), the Fe-Fe 3 O 4 -NPC@CNFs/GCE sensor showed satisfactory detection performance for LU in the range of 0.001–1.5 μM with the limit of detection (LOD) of 0.47 nM. Furthermore, this sensor exhibits excellent anti-interference capability, reproducibility, and stability, and it was also possible to effectively detect LU in food samples. This work provides a new strategy for the quantitative analysis of LU in food.
研究领域:
分析化学
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材料科学
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电化学
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纳米技术
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食品科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Rashida Shahbaz,Tianyou Li,Yongchao Sun,Samrina Sharif,Gaohong He,Canghai Ma
Mixed matrix membranes (MMMs) have emerged as promising materials for hydrogen separation, combining the processability of polymers with enhanced permeability and selectivity offered by inorganic fillers. However, challenges such as filler aggregation and poor polymer-filler interfacial compatibility limit their performance. In this study, amino-modified bimetallic ZIF (Zn/Co-ZIF-NH 2 ) was synthesized and employed as a novel nanofiller to fabricate 6FDA-DAM-based MMMs, aiming to improve interfacial compatibility between the filler and the polymer matrix. The incorporation of Co 2+ ions into ZIF-8-NH 2 introduced a synergistic effect, optimizing the balance between the rigidity and flexibility of metal-to-ligand bond linkage, while amino groups promoted robust interfacial interactions with the polymer matrix. Compared to the pure polymeric membrane, the MMMs incorporating 40 wt% MOF exhibited a significant enhancement in gas permeability, with H 2 permeability rising from 750 to 3273 Barrer and CO 2 permeability increasing from 840 to 2733 Barrer, corresponding to improvements of 336.4 % and 225 %, respectively. Simultaneously, H 2 /CH 4 and CO 2 /CH 4 selectivities increased to 33.7 and 28.1, representing improvements of 88.3 % and 41 % over the pristine polymer. These performance metrics exceed the 2008 Robeson upper bounds, demonstrating the effectiveness of Zn/Co-ZIF-NH 2 nanofillers in overcoming the permeability–selectivity trade-off. This study underscores the effectiveness of amino-modified bimetallic MOFs as advanced fillers for high-performance MMMs, particularly suited for hydrogen purification and CO 2 separation applications.
研究领域:
材料科学
·
化学工程
·
膜技术
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气体分离
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）