ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Meng-Nan Liu,Ting Chen,Fang Yin,Wei Zhi Song,Lin-Xin Wu,Jun Zhang,Seeram Ramakrishna,Yun-Ze Long
For chronic wounds, frequent replacement of bandages not only increases the likelihood of secondary damage and the risk of cross infection but also wastes medication. Therefore, in situ real-time monitoring of the concentrations of residual drugs in bandages is crucial. Here, we propose a novel strategy that combines a triboelectric nanogenerator (TENG) with medical bandages to develop a smart bandage based on zeolite imidazolate framework TENG. During the process of wound healing, the electrical output of TENG changes with the continuous release of drugs. Based on the correlation between the electrical signal of TENG and drug concentration, the concentration of residual drugs in the bandage can be monitored in real-time in situ, guiding medical staff to replace the bandage at the most appropriate time. The smart bandage based on TENG provides a new strategy for in situ real-time monitoring of drug concentration and also provides an ideal and feasible solution for the field of biomedical drug sensing.
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ChemistrySelect
·
2025
·Vol. 10
·期 1
·e202403550
·
IF 2
Qiulin Deng,Yuling Zhang,Xuanzhe Liao,Qianru He,Boli Zeng,Hong Luo,Lianjun Shi,Jinlong Jiang,Faqin Dong
Graphical In this study, the ZIF-8/GO composite was successfully prepared by the one-pot method and applied to the highly efficient removal of CR from high-concentration saline wastewater. The maximum removal ratio was up to 98%. Meanwhile, it was revealed that the removal of CR by ZIF-8/GO depended on hydrogen bonding, electrostatic interaction, and π-π stacking. Dye wastewater is high-concentration salt-containing chemical wastewater. It contains numerous toxic pollutants that are difficult to degrade, and its direct discharge without treatment will cause serious environmental problems. Herein, ZIF-8/GO adsorbent was prepared by the one-pot method to purify wastewater containing Congo red dye (CR). ZIF-8/GO possessed an S BET of 70.252 m 2 /g, pore volume of 0.036 cm 3 /g, and pore size of 3.22 nm. Adsorption experiments of ZIF-8/GO were performed based on various parameters, such as pH, concentration, dose, temperature, and salt concentration. The results showed that the adsorption capacity of ZIF-8/GO was better than ZIF-8 and GO for CR, which the adsorption process of 0.1-ZIF-8/GO (10.0 mg) for CR (50 mg/L) reached equilibrium in 60 min at 35 °C under the high-salt parameter (10 g/L NaCl). And the maximum removal ratio was up to 98%. Adsorption data were fitted using the Langmuir, and Freundlich isotherm models and pseudo-first-order, pseudo-second-order kinetics model and liquid film diffusion model, intra-particle diffusion model. The results indicated that the quasi-second-order kinetic model and Freundlich model were more suitable to describe the adsorption process for the removal of CR by ZIF-8/GO. ZIF-8/GO possesses a high removal ratio and it has promising applications in high-concentration salts-containing wastewater.
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JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2024
·Vol. 30
·期 4
·1039-1051
·
IF 3.8
Yujie Yang,Xiaodong Qiao,Xinpeng Fan,Shuangquan Liao,Zhenfan Sun
Zinc oxide (ZnO) is widely used as an activator in the vulcanization process of natural rubber. However, due to its poor compatibility with natural rubber, a large amount of ZnO needs to use, and the unreacted ZnO can precipitate in various ways, posing significant harm to aquatic organisms and microorganisms. Therefore, it is necessary to reduce the dosage of ZnO in order to minimize its environmental impact. In this study, we applied ZIF-8, a zinc-based metal–organic framework, as a vulcanization additive in natural rubber. and it was found that ZIF-8 could promote the rubber vulcanization reaction by adsorbing sulfur, promoting sulfur ring-opening, and providing different ligand interactions of Zn 2+ . Moreover, even at low usage levels of ZIF-8, it effectively reduces the amount of ZnO while simultaneously improving the mechanical properties of the samples. This work provides an effective method to reduce the amount of ZnO without sacrificing the rubber properties and provides a new idea for the application of ZIF-8 in rubber materials. Highlights ZIF-8 enhances properties of natural rubber composites with low ZnO dosages. Revealing the reason why ZIF-8 promotes the vulcanization of natural rubber. Investigation of the effect of ZIF-8 on the vulcanization properties of natural rubber.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Lingling Zhou,Ao Qu,Jing Guo,Zhanxiang Zhang,Hongru Li,Yanhui Zhao,Zhe Zhang,Xudong Yang
Developing solid-state red light–emitting carbon quantum dots (CQDs) with high photothermal stability remains a key challenge in this field. This study successfully constructed a new dual–function fluorescent nanocomposite material (RCDs@ZIF-8) by encapsulating 4,4-dihydroxybenzophenone and o-phenylenediamine-derived red fluorescent carbon quantum dots in ZIF-8 metal–organic frameworks. The porous structure of ZIF-8 effectively confines RCDs, significantly improving their photostability and fluorescence specificity, and successfully imparting them with intense red solid–state fluorescence. The RCDs@ZIF-8 composite material exhibits extremely high red fluorescence intensity in a solid state and can be used as an efficient, ratio–type fluorescent probe. In solution, it exhibits a highly selective fluorescence quenching response to Cr 6+ ions with a detection limit of 0.49 μM, making it suitable for the rapid, visual detection of trace amounts of Cr 6+ in environmental water samples. More importantly, the strong solid-state fluorescence of this material enables the high-contrast visualization of latent fingerprints, with clear and distinct fingerprint lines. RCDs@ZIF-8 integrates efficient solution sensing (Cr 6+ detection) and high–performance solid-state light emission/imaging (fingerprint identification, optical applications) in a dual-function manner. It has a wide range of applications in environmental monitoring, forensic identification, and optical anti–counterfeiting.
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CURRENT MICROBIOLOGY
·
2025
·Vol. 82
·期 9
·1-14
·
IF 2.6
Xiao Mengzhu,Wu Yujia,Li Wanzhen,Wang Jun,Zhang Weiwei,Gui Lin,Ge Fei
Antibiotics, a milestone invention in modern medicine, have significantly improved human quality of life and serve as a primary weapon against bacterial infections. However, antibiotic abuse has led to the emergence and worsening of bacterial resistance, now a major global public health challenge. Therefore, the efficient use of nanoscale antimicrobial peptides (APs) as therapeutic and diagnostic agents offers a novel strategy to replace conventional antibiotics. In this study, we innovatively combined AP with manganese dioxide (MnO 2 ) and zeolitic imidazolate framework-8 (ZIF-8) to develop a novel composite: ZIF-8-encapsulated and AP-loaded MnO 2 (AP-MnO 2 @ZIF-8). This composite exhibited superior properties, including enhanced biocompatibility, excellent aqueous stability, and increased antibacterial activity. Both in vitro and in vivo AP-MnO 2 @ZIF-8 demonstrated potent efficacy against multidrug-resistant (MDR) Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). Its minimum inhibitory concentrations (MICs) were 20 μg/ml for E. coli and 39 μg/ml for S. aureus . Furthermore, colony-forming unit (CFU) assays showed that 150-μg/ml AP-MnO 2 @ZIF-8 reduced bacterial survival below 5%, indicating effective growth inhibition. Crucially, it significantly suppressed bacterial activity in S. aureus -infected mouse wound models. Compared to free AP or MnO 2 alone, AP-MnO 2 @ZIF-8 showed significantly enhanced water solubility, bioavailability, and antibacterial activity. This work provides a foundation for developing AP-based antimicrobial strategies and offers a novel nanomaterial approach to combat the increasingly severe antibiotic resistance crisis. Graphical
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xiao Yang,Shuting Huang,Dongyun Chen,Shihong Dong,Najun Li,Qingfeng Xu,Hua Li,Jianmei Lu
Microbial fuel cells (MFCs) offer simultaneous wastewater treatment and energy generation, but their performance is limited by sluggish oxygen reduction reaction (ORR) kinetics at the cathode. To address this, we aimed to develop a low-cost, high-performance catalyst as an alternative to noble metals. We hypothesized that a hollow Zn/multi-heteroatom co-doped carbon structure derived from ZIF-8 could enhance ORR activity by improving active site exposure and charge transport. The catalyst was synthesized via template-guided structural transformation and optimized pyrolysis. The resulting Zn/DAFP-800 exhibited a high surface area (748.62 m 2 g −1 ), a Tafel slope of 71.24 mV dec −1 , and achieved a maximum power density of 2535.32 ± 7.64 mW m −2 in MFCs with 93.62 % retention over 30 days. Additionally, it achieved 92 % chemical oxygen demand (COD) removal in simulated industrial wastewater. These findings demonstrate the catalyst’s promise for practical applications in electrocatalysis and sustainable energy conversion systems.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jun Yang,Guancheng Jiang,Maen M. Husein,Wei Zhang,Shengming Huang,Fuyan Kang,Tengfei Dong,Yinbo He,Lili Yang
Assembling protective metal-organic framework (MOF) coatings for structurally fragile natural enzymes broadens their potential industrial applications. In this study, we developed an enhanced two-step biomimetic mineralization strategy, whereby cellulase acts as a biological template to pre-concentrate Zn 2+ on its surface, subsequently initiating the rapid in situ formation of zeolitic imidazolate framework-8 (ZIF-8). This approach yields a cellulase@ZIF-8 composite that effectively combines enzyme activity retention with the structural robustness of the MOF. Cellulase actively mediated ZIF-8 nucleation and framework construction through precise interfacial coordination with imidazole ligands and Zn 2+ , thus achieving in situ encapsulation. Compared with free cellulase, cellulase@ZIF-8 maintained over 90 % residual activity under acidic conditions and over 60 % activity at 80 °C. Remarkably, under alkaline conditions (pH = 9) or after 30 days of storage, cellulase@ZIF-8 residual activity exceeded twice that of the free enzyme. Even after 10 recycles, cellulase@ZIF-8 retained 60.5 % residual activity, exhibiting outstanding environmental tolerance and reusability. Our results suggest that the spatial confinement provided by ZIF-8, along with its ability to induce conformational rearrangement in the enzyme, underlies the enhanced stability and environmental tolerance observed. We further showed a pH-responsive release of cellulase facilitated by the ZIF-8 framework, enabling burst release of >90 % cellulase in a short time under acidic environment. This work offers valuable insights into enzyme-MOFs design and their applications in biocatalysis, controlled release, and adaptive biomaterials.
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DESALINATION
·
2025
·
IF 9.8
Onyeagoro Robinson Uzochukwu,Chen Lin,Ruichao Zhu,Jin Wu,Yixuan Zhou,Zhu Liang
Hydrophobic membranes, such as polytetrafluoroethylene (PTFE), are prone to pore wetting during membrane distillation when treating wastewater containing amphiphilic contaminants. In this study, a Janus membrane composed of zeolitic imidazolate framework-8 (ZIF-8) and polyvinyl alcohol (PVA) was fabricated via vacuum filtration and employed in air-bubbling-assisted direct contact membrane distillation (DCMD). The optimal membrane, with a 0.815 mg/cm 2 ZIF-8 loading, achieved a desalination rate of 99 %, a stable vapor flux of 20.53 L/(m 2 ·h), and a permeate conductivity of less than 1.44 μS/cm during 25 h of operation. However, the increasing concentration of SDS in the feed solution over time led to an increase in conductivity, which pointed to a reduction in the membrane's anti-wetting performance, suggesting the limitations of ZIF-8 alone in mitigating wetting. To overcome this, continuous air bubbling was introduced, which significantly enhanced wetting resistance and extended the membrane's operational lifespan to 48 h. Higher airflow rates (5.93 L/min) yielded optimal performance. Furthermore, a Random Forest machine learning model was employed to predict permeate flux and conductivity based on key operational parameters, achieving a coefficient of determination (R 2 ) greater than 0.73. Collectively, this study demonstrates the synergistic potential of the ZIF-8/PVA@PTFE Janus membrane combined with air-bubbling assistance to effectively suppress wetting and enhance the efficiency and durability of membrane distillation for challenging wastewater.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Weimin Liu,Xuerui Zhao,Kefan Huang,Shumei Liang,Jian Li
Magnesium alloys possess significant application potential in various industrial sectors owing to their low density and high specific strength. Nevertheless, their poor corrosion resistance under harsh service conditions remains a critical challenge. In this study, a slippery liquid-infused porous surface (SLIPS), with hydrophobicity, anti-corrosion, and anti-fouling properties, was developed on Magnesium alloy substrates. A robust zeolitic imidazolate framework-8/graphitic carbon nitride (ZIF-8/g-C 3 N 4 ) coating with highly hydrophobic was first constructed on the Mg alloy surface, followed by silicone oil infusion. Within the hierarchical architecture, ZIF-8 nanoparticles are uniformly distributed on g-C 3 N 4 nanosheets, where ZIF-8 serves as anchoring sites to immobilize silicone oil, while g-C 3 N 4 nanosheets act as an effective physical barrier, mitigating both the penetration of corrosive media and the leakage of silicone oil. Benefiting from this synergistic structure, the prepared SLIPS exhibited significantly enhanced anticorrosion performances, with a minimum corrosion current density of 3.49 × 10 - ⁸ A·cm - ² and a maximum corrosion potential of -1.375 V. Furthermore, the ZIF-8/g-C 3 N 4 SLIPS maintained a high impedance modulus of 1.28 × 10⁵ Ω·cm² after 120 h of immersion in NaCl solution, highlighting its long-term stability. This study offers a controllable structural strategy for the development of ultradurable slippery surfaces with long-term corrosion resistance.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Wenyu Li,Hui Yu,Ming Yang,Xiangting Dong,Ying Yang,Tianqi Wang
Photosensitized metal oxide gas sensors have been a research hotspot in the field of gas sensors in recent years, the vast majority of related studies use the ultraviolet light as the excitation light source, there are relatively few related studies on the ceramic gas sensors using a single LED as the excitation light sources, and even fewer studies on using natural sunlight as the light excitation source. In this study, porous ZnO precursor particles were introduced into the channels of ZIF-8 to ensure the integrity of its skeleton after calcination, and ZnO/ZIF-8 derivative was prepared and used to construct gas sensors to detect NO x under the different excitation light source (the natural sunlight, 365 nm LED and xenon lamp). Compared with the test under darkness conditions, the operating temperature was reduced 70℃ under light excitation conditions, the gas-sensitive response of the gas sensor to 20 ppm NO x under the natural sunlight excitation was 7.48 times of the darkness conditions, and the measured detection limit was as low as 50 ppb. Under the excitation of natural sunlight, 365 nm LED or xenon lamp, the room temperature gas sensitive response to NO x gas could be achieved. The prepared gas sensor was used for the actual detection of NO x concentration in vehicle exhaust, which showed the attractive practicality and excellent detection sensitivity.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yiqian Lv,Jingmao Zhao,Baomin Fan,Muhammad Mubeen,Mahmood Mubashar,Fangze Zi,Yinxin Liu,Wanling Wang,Muhammad Jawad,Xuan Wang,Shuai Liu
To overcome the inherent limitations of epoxy (EP) coatings in terms of barrier performance, active protection, and weathering resistance, this work presents a multifunctional composite strategy based on hierarchically engineered nanohybrids. Polyaspartic acid (PASP), in coordination with Ca 2+ , was co-functionalized on zeolitic imidazolate framework-8 (ZIF-8) nanoparticles that were in-situ grown on α-ZrP platforms. The resulting PASP-Ca@ZIF-8/ZrP nanohybrids exhibited excellent dispersibility and interfacial compatibility within EP matrix, enabling the fabrication of an advanced PCZZ/EP coating with robust mechanical properties (adhesion strength of 6.7 MPa and tensile strength of 52.3 MPa) and an exceptional barrier performance (| Z | 0.01Hz of 7.1 × 10 10 Ω·cm 2 after 90 days of immersion in 3.5 % NaCl solution). The nanohybrids endowed the coating with pH-responsive release of inhibitory species (PASP, Ca 2+ , Zn 2+ , and 2-MI) imparting a dynamic self-repairing function that effectively mitigated localized corrosion, as validated by salt spray and filiform corrosion tests. During 144 h of accelerated UV exposure, the | Z | 0.01Hz value of PCZZ/EP coating retain over 1 × 10 8 Ω·cm 2 , demonstrating its excellent weathering-resistance. Molecular dynamics simulations further revealed the highest crosslinking density (96 %) and the lowest Cl − diffusion coefficient (0.0159 cm 2 /s) of PCZZ/EP model, indicating a dense internal network that restricted ion transport. This work establishes a scalable and versatile design framework for developing high-performance smart epoxy coatings, offering both mechanistic insight and practical solutions for the long-term protection of steel infrastructures in severe marine and industrial environments.
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SENSORS
·
2025
·Vol. 25
·期 22
·
IF 3.5
Canjie Hu,Pengjia Qi,Lichao Liu,Yang Chen,Jijun Tong
To meet the demand for rapid and accurate glucose determination in clinical diagnostics, food testing, and related fields, this study developed a high-performance electrochemical glucose biosensor based on multi-walled carbon nanotubes/Prussian blue/zeolitic imidazolate framework-8@glucose oxidase/chitosan (MWCNTs/PB/ZIF-8@GOx/CS). The MWCNTs/PB conductive network significantly accelerated electron transfer and catalytic activity, while the ZIF-8, with its regular pore structure and high specific surface area, provides an efficient microenvironment for the immobilization and conformational stabilization of glucose oxidase (GOx), thereby improving substrate diffusion and maintaining enzyme activity. The MWCNTs/PB/ZIF-8@GOx/CS sensor demonstrates excellent sensing performance, featuring a wide linear response to glucose concentrations ranging from 4.8 μM to 2.24 mM, a high sensitivity of 579.57 μA/mM/cm2, and a low detection limit of 0.55 μM (S/N = 3). In addition, the sensor performs excellent repeatability (RSD = 1.49%) and retained 86.23% of its initial response after 3 weeks of storage at 4 °C, highlighting its strong potential for practical application in glucose detection.
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