Nanomaterials
·
2026
·Vol. 16
·期 7
·398
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IF 4.8
Weiao Li,Litiao Ren,Yuqi Zhao,Xinping Cong,Mingjin Zhang,Yan Liu,Qihui Shen,Xiaoyang Liu
Herein, an electrochemical sensor is reported for the first time based on an ordered macro–microporous composite derived from metal–organic frameworks (MOFs) for the highly sensitive detection of auramine O (AO), a Group 2B carcinogen. The hierarchical pore architecture, integrating an ordered macroporous network with a microporous ZIF-8 framework, enables the uniform dispersion of a high density of catalytically active sites. The interconnected macroporous channels facilitate efficient mass transport and rapid removal of reaction byproducts, effectively preventing pore blockage and ensuring stable sensing performance during repeated measurements. Owing to these structural advantages, the proposed sensor exhibits outstanding analytical performance toward AO detection, with a sensitivity of 0.4843 μA μM−1, a detection limit of 0.168 μM (S/N = 3), and a wide linear range from 0.5 to 50 μM. Moreover, the sensor demonstrates excellent selectivity and reproducibility, maintaining reliable responses even in the presence of 100-fold excess common food constituents such as tartrazine and glucose. Real sample analysis further confirms its high accuracy and operational stability. Overall, the electrochemical sensor based on silver nanoparticle-decorated ordered macro–microporous ZIF-8 synthesized via in situ reduction shows great potential as a portable and on-site tool for rapid AO detection in food. More broadly, ordered macro–microporous MOF-derived materials represent a promising platform for advanced electrochemical sensor applications.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Xin Yan,Pengtao Guo,Youbin Zhou,Ting Wang,Xianren Zhang,Yunpan Ying,Qingyuan Yang,Dahuan Liu
As the CO2 concentration in the atmosphere is relatively low, directly capturing CO2 from the air remains a challenge. Herein, a dual-functionalized strategy is developed to construct a series of IL@ZIF-8 composite materials by regulating the spatial distribution of nitrogen sites of the anion and the amine content of the cation in the ionic liquid (IL). The introduction of functional sites significantly enhances the capture capability of composite materials toward low-concentration CO2. The IL composed of pyrazole (Py) with adjacent nitrogen sites exhibits stronger interaction with CO2 due to its lower viscosity and higher electron cloud density. The IL@ZIF-8 constructed with tetraethylenepentamine (TEPA) as the cation and Py demonstrates optimal CO2 capture capability, which is attributed to TEPA’s balance of abundant amine groups and moderate viscosity. [TEPA][Py]@ZIF-8 exhibits a remarkable dynamic CO2 capture capacity under simulated air conditions, and in situ FT-IR analysis reveals its reversible adsorption mechanism. This study provides a new strategy for the development of novel adsorbents for low-concentration CO2 capture.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lijie Wang,Zixuan Wang,Jiarong Chang,Zhiyue Zhou,Xihan Wang,Zhaoming Li,Dawei Li,Fang Wang,Wen Zhang,Kannapathirage Dilini Maheshika Gunarathne,Xin Meng
Infected skin wound healing involves a series of dynamic and complex physiological processes. In this study, we reported a dissolvable microneedle (MN) with pullulan as the matrix material. The antimicrobial peptide LL37 was immobilized in situ within ZIF-8 to form hybrid nanoparticle LL37@ZIF-8 (LZ). This nanoparticle was then loaded onto the tip of the microneedle along with Prussian Blue (PB) nanozymes to obtain PB+LZ@MN, which exhibits both antimicrobial and antioxidative activities, for the healing of infected skin wounds. The MN, with good mechanical properties, could rapidly dissolve its tip upon insertion into the skin, releasing LZ and PB into the wound within 3 min. The MN had good physicochemical properties and biocompatibility and was shown to reduce inflammation and stimulate angiogenesis by enhancing collagen deposition and re-epithelialization in the Sprague-Dawley (SD) rat skin defect infection model. On the 10th day of wound healing, the healing rate of the PB+LZ@MN group was as high as 99%, which was significantly higher than that of the control at 84%, significantly accelerating the healing of the infected wound. This multifunctional MN is expected to provide a competitive biomaterial for accelerated infected wound healing.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Shaohui Huang,Jin Li
In order to solve the problems of insufficiently rapid response and recovery and poor moisture resistance when zinc oxide is used as a gas sensitive material, a flexible frame material with hydrophobicity, ZIF-8, was introduced to modify the surface of ZnO, and then doped Ag nanoparticles, which can be electron sensitized with ammonia, to obtain Ag modified ZnO@ZIF-8 nanoparticles. At room temperature (RT, ∼25 °C), the response time of ZnO, ZnO@ZIF-8, and Ag modified ZnO@ZIF-8 nanoparticles to 500 ppm ammonia is 74.3 s, 20.2 s, and 8.0 s, and the recovery time is 36.0 s, 23.1 s, and 16.8 s, respectively. The fitting detection limit of Ag modified ZnO@ZIF-8 nanoparticles for ammonia was 83 ppm. Compared with pure ZnO, the moisture resistance of ZnO@ZIF-8 and Ag modified ZnO@ZIF-8 was significantly improved after coating with ZIF-8.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Weidong Li,Weifeng Luo,Yueping Wei,Rongai Huang,Wei Shang,Jiqiong Jiang,Yuqing Wen
Superhydrophobic coatings have emerged as a primary strategy for protecting magnesium alloys. However, their application is often hindered by reliance on harmful fluorinated materials. In this study, a fluorine-free ZnO/ZIF-8 composite coating was fabricated on magnesium alloy surfaces via electrodeposition. By leveraging synergistic effects between ZnO nanostructure roughness and ZIF-8's intrinsic hydrophobicity, superhydrophobicity was achieved without fluorinated surface modifications. Results demonstrate excellent hydrophobic stability, with superhydrophobicity maintained under low-temperature conditions. The water contact angle remained unchanged in sodium chloride solutions of varying concentrations, indicating exceptional salt-induced corrosion resistance. Furthermore, the coating exhibited hydrophilic-hydrophobic transition properties. Electrochemical tests confirmed superior corrosion resistance, showing a corrosion current density of 3.964 × 10 −9 A∙cm −2 and a four-order-of-magnitude increase in charge transfer resistance versus the AZ91D substrate. Molecular dynamics (MD) simulations and density functional theory (DFT) calculations elucidated the corrosion protection mechanism, providing theoretical support for experimental findings. This study integrates experimental and theoretical approaches, offering new insights and technical references for fluorine-free superhydrophobic coatings in magnesium alloy corrosion protection.
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Materials Today Sustainability
·
2025
·
IF 7.9
Bing Liu,Qiushi Sun,Meng Sun,Shuang Liu,Hao Wu
As the need for enhanced energy efficiency and the use of renewable energy increases, polyethylene glycol (PEG), a crucial element in phase change materials (PCMs), has gained considerable focus in the areas of temperature control and energy storage. Nevertheless, PEG faces leakage and undesired light absorption problems in practical applications. In this study, melamine foam (MF) is utilized as an encapsulation material in an attempt to tackle the leakage problem. ZIF-67 is incorporated onto MF by in situ growth, followed by high-temperature carbonization to prepare a hierarchical porous carbon, which further enhances the absorbance of phase change composite (PCC). The crystallization of the prepared PCCs is in the range of 157.9-170.3 J/g. The photo-thermal conversion rate of PCC is 92.65%, and the thermal conductivity is 0.38 W/(m∙K). In conclusion, the problems of PEG leakage and low light absorption were solved by carbonized porous encapsulation technique and in situ growth of ZIF-67, which enhanced the solar-thermal energy conversion of storage and PCCs.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Xiaomin Guo,Wei Wang,Huan Lyu,Xiuling Zhang,Chunhui Li,Fan Yang,Mingxin Zhou,Yongzheng Zhang,Dongyang Miao,Ruiyun Zhang
The selective removal of dyes from wastewater remains a critical challenge due to the structural complexity and persistence of dye molecules. In this work, a polyethyleneimine (PEI)-functionalized ZIF-8 hybrid nanofibrous membrane was fabricated via a seed-assisted secondary growth strategy, aiming to achieve high selectivity toward anionic dyes. Synergistic interactions between the porous metal-organic framework (MOF) grown on the surface and the polymer functional groups enable efficient and selective adsorption of anionic dyes. Adsorption experiments demonstrated that the hybrid membrane exhibited high adsorption capacities for anionic dyes, reaching 506.48 and 929.30 mg·g −1 for Congo red (CR) and methyl orange (MO), respectively. In contrast, significantly lower adsorption capacities were observed for cationic dyes (rhodamine B, RhB and methylene blue, MB). Moreover, the membrane maintained strong selectivity toward anionic dyes in mixed dye systems containing all four dyes and retained over 80 % removal efficiency for CR and MO after ten consecutive adsorption–desorption cycles. Additionally, the membrane exhibits superhydrophilicity, excellent water stability, enhanced mechanical properties, and antibacterial activity, highlighting its potential for advanced wastewater treatment, particularly in the remediation of dye effluents. This work also provides valuable insights into the practical application of MOF-based composite materials.
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Membranes
·
2025
·Vol. 15
·期 7
·197
·
IF 3.6
Jiale Zhang,Huixin Dong,Fei Guo,Huijun Yi,Xiaobin Jiang,Gaohong He,Wu Xiao
In this work, HNTs@ZIF-67 composites were synthesized using the in situ growth method and incorporated into 6FDA-TFMB to prepare mixed-matrix membranes (MMMs). Scanning electron microscope (SEM) and transmission electron microscope (TEM) proved that the HNTs@ZIF-67 composite not only retained the hollow structure of HNTs, but also formed a continuous ZIF-67 transport layer on the surface of HNTs. The results of gas permeability experiments showed that with the increase in HNTs@ZIF-67 incorporation, the He permeability and He/CH4selectivity of MMMs showed a trend of increasing first and then decreasing. When the loading is 5 wt%, the He permeability and He/CH4selectivity of MMMs reach 116 Barrer and 305, which are 22.11% and 79.41% higher than the pure 6FDA-TFMB membrane. The results of density functional theory (DFT) and Monte Carlo (MC) calculations reveal that He diffuses more easily inside ZIF-67, HNTs and 6FDA-TFMB than CH4, and ZIF-67 shows larger adsorption energy with He than HNTs and 6FDA-TFMB, indicating that He is easily adsorbed by ZIF-67 in MMMs. Based on experimental and molecular simulation results, the mechanism of HNTs@ZIF-67 improving the He/CH4separation performance of MMMs was summarized. With the advantage of a smaller molecular kinetic diameter, He can diffuse through ZIF-67 on the tube orifice of HNTs@ZIF-67 and enter the HNTs’ hollow tube for rapid transmission. At the same time, He can also be rapidly transferred in the continuous ZIF-67 transport channel layer, which improves the He permeability and the He/CH4selectivity of MMMs.
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PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Xunliang Huang,Weiqiang Tian,Hao Jiang,Yue Xing,Ya Pu,Zhongwei Liu,Song Yang,Zhensheng Kang,Lin Cai
BACKGROUND Fungal phytopathogens pose a significant threat to global crop yields. The overuse of pesticides leads to pesticide-resistant pathogens, environmental contamination and risks to human health. Consequently, there is an urgent need for effective and ecofriendly antifungal strategies to address these challenges. RESULTS Herein, ZnO-ZIF-8 is synthesized via an in situ growth method to integrate the antifungal property of zinc oxide (ZnO) and the control release property of zeolitic imidazolate framework (ZIF)-8. Results suggest that the inhibition rates of ZnO, ZIF-8 and ZnO-ZIF-8 against Alternaria alternata are 44.4%, 74.1% and 94.4%, respectively, indicating that ZnO-ZIF-8 exhibits the most potent antifungal activity. ZnO-ZIF-8 also causes distortion and fracture of mycelia, significantly impairing spore germination and inhibiting germ tube elongation. CONCLUSION The potential antifungal mechanisms of ZnO-ZIF-8 involve the disruption of fungal cell morphology and structure through the release of Zn 2+ , ultimately leading to fungal cell death. Biosafety assessments indicate that the application of ZnO-ZIF-8 exhibits negligible effects on tobacco seeds and plants. This study provides valuable insights for the effective management of plant fungal diseases and supports sustainable agricultural development. © 2025 Society of Chemical Industry.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Xie Zhoujian,Wu Jiawen,Huang Kejing,Tan Xuecai
Growing needs for monitoring kanamycin (KAN) residues in food require ultrasensitive, field-deployable determination platforms. Herein, we present a universal photoelectrochemical (PEC) aptasensing strategy that synergizes ZIF-8/Bi 2 S 3 heterostructure-engineered photoelectrodes with strand displacement–triggered biocatalytic signal amplification. The urchin-like ZIF-8/Bi 2 S 3 heterojunction, synthesized through in situ MOF growth on semiconductor nanoarchitectures, demonstrates exceptional photocurrent generation via facilitated carrier separation achieved by directional electron transfer from Bi 2 S 3 to ZIF-8 and hole scavenging by ascorbic acid. Capitalizing on aptamer-target recognition in homogeneous phase, KAN concentration is transduced into messenger DNA (S2) through displacement dynamics, overcoming steric limitations of conventional solid-phase biosensing. The liberated S2 hybridizes with electrode-immobilized S1 to assemble MnPP-loaded dsDNA, where the mimic enzyme catalyzes H 2 O 2 -driven precipitation of benzo-4-chlorohexadienone (4-CD). This biocatalytic insulation layer induces quantifiable photocurrent attenuation proportional to KAN levels (10–1.0 × 10 6 nmol/L), achieving a 0.1 nM detection limit superior to ELISA and HPLC. The platform demonstrates 95.7–105.4% recovery in milk matrices and cross-reactivity below 5.8% against structural analogs, validating its specificity. By integrating MOF-semiconductor interfacial engineering with homogeneous-to-heterogeneous signal translation, this work establishes a paradigm for antibiotic monitoring that bridges laboratory innovation with on-site applicability. Graphical abstract
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Carbon Letters
·
2023
·Vol. 33
·期 2
·573-585
·
IF 4.5
Zhu Wenjun,Zuo Xiaohua,Deng Xiangyi,Zhang Xinhao,Yao Chuang,Wang Xiaobo
Core–shell ZIFs wrapped CuO hybrid materials (CuO@ZIF-67(Co)) were designed, synthesized, characterized, and employed as peroxymonosulfate (PMS) activators to degrade methylene blue (MB). It demonstrated outstanding catalytic activity on account of the unique structure and the synergistic effect between CuO cores and ZIF-67(Co) shells, resulting in complete degradation of MB (10 mg/L) in 1 min. Reactive oxygen species (ROSs) research showed that both SO 4 − and OH were responsible for the removal of MB. The synergistic activation mechanisms in the CuO@ZIF-67(Co)/PMS system were investigated, which mainly involved the effective electron transfer of CuO and ZIF-67(Co) for accelerating the cycle of Cu II /Cu I and Co III /Co II . This study broadens the application of MOF-derived materials for wastewater treatment.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Tao Yan,Jianhua Yang,Jinming Lu,Liang Zhou,Yan Zhang,Gaohong He
Due to the poor heterogeneous nucleation properties of MOFs crystal on ceramic substrates resulting from the absence of interaction of MOFs with support substrate surface, it is usually difficult to prepare well-intergrown MOF membranes on substrate by simple in situ growth. In this work, a novel synthesis strategy was used to prepare defect-free ZIF-8 membranes on α-Al 2 O 3 supports by depositing gold particles modified with 2-mercaptoimidazole which creates pseudo-surfaces to bridge the metal centers with support. The end groups of the 2-mercaptoimidazole guides the heterogeneous nuclei to the support surface as homologous-like ligands. Furthermore, investigation of the metal sources revealed that the ZIF-8 membranes prepared with Zn(OAc) 2 as the zinc source possessed more continuous and well-intergrown ZIF-8 membranes with a thickness of about 1 μm compared to other zinc sources. The results of gas separation performance show that the optimized ZIF-8 membranes possess high hydrogen permeance and thermal stability. The gas separation selectivity for binary H 2 /CH 4 mixture reached 20.8 at 150 °C and 1 bar, with a high H 2 permeance of about 6.15 × 10 −7 mol m −2 s −1 Pa −1 , which is promising for hydrogen separation and purification. Moreover, free-organic solvents and room temperature growth by our strategy dramatically reduces the difficulty of preparation and environmental destruction, thus offering a new avenue to prepare MOFs membrane with good separation performance.
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