PEST MANAGEMENT SCIENCE
·
2023
·Vol. 79
·期 7
·2603-2610
·
IF 4.1
Yue Ma,Kefei Zhao,Yi Ding,Shuai Wu,Xun Liao,Xianhui Yin,Zilu Li,Rongyu Li,Youhua Long,Fengpei Du
BACKGROUND Neonicotinoids are among the most essential chemical insecticides worldwide because of their high activity against many important pests and wide application. However, their application is limited by their toxicity to honeybees. Therefore, the development of a facile route to fabricate efficient and eco-friendly pesticide formulations is of great significance. RESULTS In this study, clothianidin-loaded zeolitic imidazolate framework-8 (CLO@ZIF-8) nanoparticles were fabricated by a facile one-pot route using zinc nitrate as a Zn 2+ source and characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, energy-dispersive spectrometry and Fourier transform infrared spectroscopy. Based on the pH response of ZIF-8, a ‘burst release effect’ was observed for CLO@ZIF-8 at pH 3 and 5 within 12 h, in contrast to the slow and sustainable release at pH 8. CLO@ZIF-8 improved the retention ability of the pesticide liquid and remained 70% control efficacy on Nilaparvata lugens after water rinsed of sprayed CLO@ZIF-8. The pH response of CLO@ZIF-8 allowed it to maintain 43% control efficacy against N. lugens after 10 days of application, which was twice the efficacy of clothianidin solution (SCA). Moreover, CLO@ZIF-8 reduced the acute toxicity to honeybees ( Apis mellifera ) by ≥120-fold compared with SCA. CONCLUSION This study provides new insights into the application of ZIF-8 to neonicotinoids and suggests the need for the development of a biocompatible and eco-friendly pesticide formulation. © 2023 Society of Chemical Industry.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Mengge Shang,Xiaoqian Peng,Jing Zhang,Xiaochan Liu,Zhipeng Yuan,Xinfu Zhao,Sijia Liu,Shimo Yu,Xibin Yi,Serguei Filatov
Adsorption natural gas (ANG) is a technology in which natural gas is stored on the surface of porous materials at relatively low pressures, which are promising candidates for adsorption of natural gas. Adsorbent materials with a large surface area and porous structure plays a significant role in the ANG technology, which holds promise in increasing the storage density for natural gas while decreasing the operating pressure. Here, we demonstrate a facile synthetic method for rational construction of a sodium alginate (SA)/ZIF-8 composite carbon aerogel (AZSCA) by incorporating ZIF-8 particles into SA aerogel through a directional freeze-drying method followed by the carbonization process. The structure characterization shows that AZSCA has a hierarchical porous structure, in which the micropores originated from MOF while the mesopores are derived from the three-dimensional network of the aerogel. The experimental results show that AZSCA achieved high methane adsorption of 181 cm3·g–1 at 65 bar and 298 K, along with higher isosteric heat of adsorption (Qst) throughout the adsorption range. Thus, the combination of MOF powders with aerogel can find potential applications in other gas adsorption.
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ACS Nano
·
2023
·
IF 17.1
Mingxuan Song,Juanxia Xing,Huan Cai,Xin Gao,Chunyang Li,Changjin Liu,Xinmin Li,Xuhuai Fu,Shijia Ding,Wei Cheng,Rui Chen
Nanoparticle-natural enzyme complexes are receiving increasing attention as the promising signal reporters for colorimetric lateral flow immunoassay (LFIA). Nonetheless, it remains a challenge to develop the nanocomplexes with high loading efficiency, catalytic efficiency, and colorimetric signal brightness. Herein, inspired by pomegranate structure, we reported the synthesis of a colorimetric catalytic nanocomplex ((HRP@ZIF-8)3@PDA@HRP), using dopamine flexible scaffold-coated multishell porous zeolitic imidazolate framework-8 (ZIF-8) as a hierarchical scaffold to encapsulate horseradish peroxidase (HRP), and described its potential to promote an ultrasensitive colorimetric LFIA of cardiac troponin I (cTnI). (HRP@ZIF-8)3@PDA@HRP exhibited ultrahigh HRP loading efficiency and catalytic activity due to the epitaxial shell-by-shell overgrowth of porous ZIF-8 scaffold, which provided more cavities for enzyme immobilization and a diffusion path for the catalytic substrate. Furthermore, the polydopamine (PDA) layer on the (HRP@ZIF-8)3 surface both enhanced the colorimetric signal brightness and acted as a flexible scaffold to immobilize HRP, further increasing the amount of enzyme. Following integration with LFIA, the developed platform achieved an ultrasensitive colorimetric test strip assay for cTnI with pre- and postcatalytic naked-eye detection sensitivities of 0.5 ng mL–1 and 0.01 ng mL–1, respectively, which were 4/2- and 200/100-fold higher than gold nanoparticles (AuNPs)/PDA-based LFIA and comparable to chemiluminescence immunoassay. Further, the quantitative testing results of the developed colorimetric LFIA on 57 clinical serum samples agreed well with the clinical data. This work provides ideas for the design of natural enzymes-based colorimetric catalytic nanocomplex to encourage applications for the development of ultrasensitive LFIA for early diseases diagnosis.
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AICHE JOURNAL
·
2023
·Vol. 69
·期 9
·e18120
·
IF 3.7
Wei-Min Liu,Heng Mao,Yu-Jie Wang,Shen-Hui Li,Ying-Nan Feng,Li-Hao Xu,Sen Wang,Chan Pei,Zhi-Ping Zhao
The construction of high-performance MOF-based hollow fiber composite membrane (HFCM) modules is a significant, yet challenging task for the biofuel production industry. In this study, a novel approach was taken to fabricate PDMS@ZIF-8/PVDF HFCMs in modules through a facile ZIF-8 self-crystallization synthesis followed by pressure-assisted PDMS infusion for pervaporation ethanol-water separation. The as-prepared HFCMs exhibited an ultrathin separation layer (thickness, 370 ± 35 nm), which was achieved through precise regulation of the ZIF-8 membrane and defect repair by PDMS infusion. Moreover, the strategy utilized in this study resolved the defect issues arising from MOF agglomeration in conventional composite membranes. Impressively, at the optimal packing density, the prepared membrane demonstrated a remarkable ethanol flux (1.11 kg m −2 h −1 ) with an PSI value (26.59 kg m −2 h −1 ) and showed promising long-term stability for the pervaporation of 5 wt% ethanol aqueous solution at 40°C.
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Biointerphases
·
2023
·Vol. 18
·期 2
·
IF 2.1
Chen Huaxiang,Zhou Hao,Chen Mingchao,Quan Yan,Wang Chenglong,Gao Yujie,Wu Jindan
Oily wastewater discharged by industrial development is an important factor causing water pollution. Membrane separation technology has the advantages of low cost, simple operation, and high efficiency in the treatment of oily wastewater. However, membrane materials are easily eroded by microorganisms during long-term storage or use, thereby resulting in reduced separation efficiency. Herein, a zeolite imidazole skeleton-8@silver nanocluster composite polyacrylonitrile (ZIF-8@AgNCs/PAN) nanofibrous membrane was fabricated by electrospinning and in situ growth technology. The surface chemistry, morphology, and wettability of the composite membranes were characterized. The carboxyl groups on the surface of hydrolyzed PAN nanofibers, which can be complexed with zinc ions (Zn2+), are utilized as growth sites for porous metal organic frameworks (ZIF-8). Meanwhile, AgNCs are loaded into ZIF-8 to achieve stable hybridization of ZIF-8@AgNCs and nanofibers. The loading quantity of ZIF-8@AgNCs, which can dominantly affect the surface roughness and the porosity of the membranes, is regulated by the feeding amount of AgNCs. The ZIF-8@AgNCs/PAN membrane achieves effective oil-water separation with high separation efficiency toward petroleum ether-in-water emulsion (98.6%) and permeability (62 456 ± 1343 Lm−2 h−1 bar−1). Furthermore, the ZIF-8@AgNCs/PAN membrane possesses high antibacterial activity against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus), which is beneficial for the long-term storage and use of the membrane.
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DESALINATION
·
2023
·
IF 9.9
Yuchen Du,Biplob Kumar Pramanik,Yang Zhang,Veeriah Jegatheesan
β-cyclodextrin (β-CD) and tannic acid (TA) together as an organic phase and zeolitic imidazolate framework-8 (ZIF-8) as an additive can be used along with trimesoyl chloride (TMC) as a monomer to synthesize nanofiltration (NF) membranes. Those membranes have better separation performance and provide higher flux. In this study, a new NF membrane was synthesized using them to investigate the effects of monomer concentration, substrate morphology, and reaction temperature on membrane performance . The results showed that when the concentrations of both β-CD and TA were 1 wt%, the membranes had the highest selectivity (2.99) for monovalent and divalent salts. A 10-fold increase in TMC concentration (0.05 to 0.5 wt%) optimized membrane selectivity and flux. When both spongy and cavernous structures were present in the substrate, the membranes could achieve >85 % removal of monovalent and divalent salts. After the introduction of ZIF-8, the roughness of the membrane increased, and the removal rate of monovalent salts decreased significantly, resulting in a salt selectivity of 7.97 and a flux up to 27.81 ± 1.17 L/(m 2 h). The growth of ZIF-8 on the membrane surface was assisted by an increase in the reaction temperature.
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CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Chunhua Li,Fuli Wang,Xiao Xu,Yubo Shi,Jinshuo Liang,Ruoshan Yang,Jue Liu,Zhilei Zhao
The misuse of ciprofloxacin (CIP) poses significant risks to our ecosystems by causing serious environmental pollution and the development of antibiotic-resistant bacteria, which requires effective remediation technologies. Herein, we developed a composite material (CMC/CoNiFe-LDH/ZIF-8, abbreviated as CLZ) of loading layered double hydroxide (CoNiFe-LDH) decorating zeolitic imidazolate framework (ZIF-8) on the carboxymethylcellulose sodium (CMC) aerogel as an adsorbent for CIP removal. The CMC aerogel in the composite provided a porous structure as the growth template of CoNiFe-LDH, while CoNiFe-LDH provided growing points for ZIF-8, and ZIF-8 could be used as a carrier for loading CIP, resulting in a high adsorption property of CLZ with optimized mass ratios of CMC/CoNiFe-LDH aerogels and ZIF-8 at 5:1 (denoted as CLZ-1). The adsorption process of CLZ-1 followed the pseudo-second-order kinetic model and Langmuir isotherm model, and the maximum capacity of CLZ-1 to adsorb CIP was 1397.5 mg·g −1 . The results of characterization, data fitting and parameter revealed that strong hydrogen bonding, complexation of unsaturated metals, electrostatic interaction, and π–π stacking between CLZ-1 and CIP were the main mechanisms for CIP adsorption. In addition, the CLZ-1 was successfully used as a solid phase extraction material combined with high performance liquid chromatography (HPLC) for the detection of CIP. Meanwhile, the CLZ-1 adsorbed CIP showed excellent antibacterial activity. Hence, CLZ-1 demonstrated great potential and promising practicability in separation and removal of antibiotic contaminants.
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JOURNAL OF CATALYSIS
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2022
·
IF 8.047
Jun-Fei Gu,Cheng Chen,Zhong-Hui Zheng,Jing Hang,Wei Sang,Ji-Chao Wang,Ye Yuan,Somboon Chaemchuen,Francis Verpoort
Zeolitic imidazolate framework-8 (ZIF-8) is a representative Zn-based metal–organic framework (MOF) featuring high porosity, good stability, and large surface area. Owing to these fascinating properties, ZIF-8 exhibits promising potential in catalysis. With our continuous interest in catalyst development of alcohol-involving green transformations, we intended to exploit the capability of ZIF-8 in catalyzing the acceptorless dehydrogenation of alcohols to carboxylates. The preparation of ZIF-8 at room temperature possesses advantages such as environmental friendliness and easy operation. Subsequently, various techniques were adopted to characterize the structures, morphology, and chemical states of both fresh and reused catalysts. Notably, the catalyst displayed good reusability since it could be reused at least 5 times without considerable loss of catalytic activity. It was also perceived that KOH was an indispensable component of this catalytic process. More specifically, KOH not only worked as one of the starting materials but also provided the basic environment to promote this catalysis. Furthermore, the aldehyde was confirmed as a key intermediate for this catalytic process. Based on additional experiments and literature reports, we proposed [Zn–N] as the active sites and presented a plausible catalytic cycle.
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ACS Applied Polymer Materials
·
2023
·
IF 5
Jizhen Huang,Zhaoqing Lu,Jiaoyang Li,Fengfeng Jia,Yafang Wang,Li Hua
The public health and water ecosystems are affected by industrial wastewater, resulting in water pollution including heavy metal ions and organic matter, so that adsorbents with multiple adsorption effects are developed to achieve efficient adsorption. In this work, the porous zeolitic imidazolate framework-8 (ZIF-8) was assembled onto cellulose nanofiber (CNF)/poly(vinyl alcohol) (PVA)/aramid nanofiber (ANF) composites and the ZIF-8@CNF/PVA/ANF (ZIF-8@CPA) composite aerogel was designed and fabricated. The composite aerogel has good physical properties and optimal adsorption performance assembled with 20% ZIF-8 content. The ZIF8-20@CPA composite aerogel has high porosity of about 99.62%; the specific surface area is 120.53 m2/g, and pore size is as low as 11.82 μm with a lower volume shrinkage of 1.31%. The adsorption capacity of Cr6+ and rhodamine B about lightweight ZIF8-20@CPA composite aerogels reached 231 mg/g and 201 mg/g, respectively. Due to the 3D porous structure, electrostatic interaction, and ion synergism generated by its assembly with ZIF-8, the composite aerogels have good adsorption performance for heavy metal ions and conform to the relationship of a pseudo-second-order kinetic model. Thus, this study suggests a route to fulfill the multiple adsorbents.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jia Wang,Xuan Zhao,Hongqiang Qu,Jianzhong Xu,Jing Ma
The property of the substrate takes a critical role in the separation performance of the thin-film composite (TFC) membrane. While, regulating the properties of the substrate by introducing metal–organic framework with tunable shapes for optimal TFC membrane has not been studied in-depth. In this work, a rationally regulated polyethersulfone substrate was designed by embedding ZIF-8 with three different shapes (spherical, hollow tube and flowerlike). Then, the TFC membranes were obtained by synthesising polyamide layer on the modified substrates. The results show that the modified substrates have positive effect on the water treatment performance, which was highly related to the addition amount and shapes of ZIF-8. Specifically, the hollow tube ZIF-8 modified TFC membrane exhibits the best water permeance of 2.22 L m -2 h −1 bar −1 (LMH bar −1 ) and excellent rejections (94.2 %, 99.7 %, 99.8 %, 99.9 % for NaCl, AO, MO and DR, respectively), which mainly derived from the increased channels and surface roughness. The findings provide a comprehensive insight of the shape-controlled substrate in the separation performance of the TFC membranes.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Junyuan Zhang,Ziwei Deng,Shuli Bai,Changyu Liu,Mengchen Zhang,Chao Peng,Xiaolong Xu,Jianbo Jia,Tiangang Luan
In this work, potassium acetate (KAc) was added during the synthesis of a Zn-Fe based metal-organic framework (Fe-ZIF-8) to increase the fixed amount of Fe while simultaneously enhancing the number of pores. Electrospinning was utilized to embed KAc-modified Fe-ZIF-8 (Fe-ZIF-8-Ac) into the polyacrylonitrile nanofiber mesh, to obtain a network composite (Fe@NC-Ac) with hierarchical porous structure. Fe@NC-Ac was co-pyrolyzed with thiourea , resulting in Fe, N, S co-doped carbon electrocatalyst . The electrochemical tests indicated that the prepared catalyst displayed relatively remarkable oxygen reduction reaction (ORR) catalytic activity, with an onset potential (E onset ) of 1.08 V (vs. reversible hydrogen electrode, RHE) and a half-wave potential (E 1/2 ) of 0.94 V, both higher than those of the commercial Pt/C (E onset = 0.95 V and E 1/2 = 0.84 V), respectively. Assembled into Zn-air batteries, the optimized catalyst exhibited higher open circuit voltage (1.698 V) and peak power density (90 mW cm −2 ) than those of the commercial 20 wt% Pt/C (1.402 V and 80 mW cm −2 ), respectively. This work provided a straightforward manufacturing strategy for the design of hierarchical porous carbon-based ORR catalysts with desirable performance.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Liang Zhang,Junhui Xu,Jing Qian,Yazhen Wang
Neohesperidin dihydrochalcone (NHDC), as a high-intensity sweetener, has been widely used to be a new food additive . In this study, zeolitic imidazolate framework (ZIF)− 8/electrochemical reduced graphene oxide (ErGO) composite materials were favorably constructed onto the glassy carbon electrode (GCE) by two simple steps without any dispersant , and an electrochemical sensing of NHDC was developed. The morphology and its structure of the composite materials were characterized by SEM and Raman. The two-electron two-step redox mechanism was investigated by cyclic voltammetry (CV). The first anodic peak current of NHDC at ZIF-8/ErGO electrode is about 3.8 times as much as that of ErGO GCE and 42 times of ZIF-8 GCE under the optimized conditions. The linear relationship between oxidation peak current of NHDC and its concentration is ranged from 0.08 to 80 μM by linear sweep voltammetry (LSV), with the detection limit of 31.5 nM (based on S/N = 3). Finally, the modified electrode was used to detect NHDC in milk samples with a recovery rate of 98.3∼106.3%, which implied its feasibility for the determination of NHDC in actual samples.
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危险品化学品经营许可证（带存储）