NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 16
·7384-7393
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IF 2.7
Wanyu Lu,Qijin Tang,Huajing Cheng,Shudi Li,Cailong Zhou,Hao Yang
The potential of bionic-inspired superhydrophobic membranes in the field of oil–water separation is significant. In this study, tannic acid induced the rhombohedral crystal form of ZIF-8 to grow in situ on a nylon membrane, resulting in the formation of a layered micro-nano structure. As a result, we successfully prepared a multifunctional composite membrane with exceptional underwater superoleophobicity and oil anti-adhesion. The composite membrane demonstrated an impressive separation flux for layered oil–water mixtures, reaching up to 4851.2 L m−2 h−1. Furthermore, when dealing with surfactant-free oil-in-water emulsions, the separation efficiency exceeded 99.0%. Because ZIF-8 is positively charged, the composite membrane exhibits different separation fluxes in the presence of different surfactants. For SDS stabilized toluene emulsion in water, the maximum separation flux of the composite membrane is 1307.4 L m−2 h−1. The membrane also has good tolerance to alkali and salt substances and is easy to recycle and reuse. Consequently, the ZIF-8 composite membrane has significant potential in effectively separating oil–water emulsions.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 47
·e56261
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IF 2.7
Jiayu Lin,Yongbo Hou,Lailong Ding,Yifan Wang,Jinhu Hu,Xishun Qiu,Chao Wu,Mingliang Ma,Wei Gao
Metal–organic frameworks (MOFs) have garnered significant attention in recent years due to their potential application in flame-retardant polymeric materials. In this work, Fe 2 O 3 /ZnFe 2 O 4 /g-C 3 N 4 @ZIF-8 flame retardants were synthesized via solvothermal and calcination techniques, and their elemental composition and morphologies were thoroughly characterized. The flame retardancy of polyurea (PUA) composites incorporating varying dosages of these flame retardants was evaluated using cone calorimetry tests (CCT). The findings demonstrate that the incorporation of Fe 2 O 3 /ZnFe 2 O 4 /g-C 3 N 4 @ZIF-8 significantly enhanced the flame retardant properties of PUA composites. With the addition of 3 wt% of the flame retardant, the peak heat release rate (PHRR), total heat release (THR), total smoke production (TSP), and total CO yield (TCO) of the PUA composites decreased to 890.82 kW/m 2 , 131.34 MJ/m 2 , 12.30 m 2 , and 2.39 g, respectively, reflecting reductions of 33.59%, 18.59%, 29.40%, and 47.93% compared with pure PUA. The flame-retardant mechanism was systematically analyzed in both the condensed and gas phases. This study provides a robust experimental foundation and novel insights that contribute to the development of advanced flame-retardant coating materials.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lei Zhang,Yong Zhao,Hao Yu,Liang Chen,Xiang Liu,Ailing Zhang,Zhibin Deng,Jian Zhen Ou
Graphene oxide (GO) membranes hold promise for selective CO 2 adsorption over N 2 due to their carboxyl groups, making them attractive for flue gas CO 2 capture. However, challenges such as limited carboxyl content, flexible nanosheets, and dense layer stacking hinder their N 2 /CO 2 gas selectivity, pressure resistance, and permeability. In this study, we introduce a specific sub-nanometer framework structure within GO membranes by in-situ growing ZIF-8 nanocrystals. This novel approach, achieved through simultaneous infiltration of zinc nitrate and 2-methylimidazole precursors on both sides of the membrane, enhances CO 2 capture and pressure resistance capabilities of resulting ZIF-8@GO composite membranes. Additionally, the incorporation of carboxylated wrinkled graphene (WG) and ethylenediamine (EDA) cross-linking agent molecules improves CO 2 capture capability and introduces reinforced porous structures to enhance permeability. Experimental results demonstrate remarkable permeability, selectivity, and pressure resistance of the prepared ZIF-8@EDA-GO/WG composite membranes. Under a gas pressure of 0.2 MPa, permeability reaches 1850 GPU, with theoretical selectivity for N 2 /CO 2 single gas and separation factors for mixed gases of 18.3 and 32.3, respectively, surpassing conventional GO membranes (3 GPU, 1.1, and 1.2). Even under elevated air pressure conditions (1.2 MPa), the composite membranes maintain a theoretical selectivity of 13.4. Our CO 2 capture membrane design strategy not only advances the development of functional membranes but also contributes to mitigating CO 2 emissions from flue gas, thereby combating global warming.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xiaoqi Cheng,Duoxin Zhang,Jun Li,Rongmin Wang,Yufeng He,Yaping Zhang,Pengfei Song
With the accelerating green transformation of agriculture, the development of environmentally friendly and highly efficient antimicrobial materials has emerged as a critical strategy to address challenges in agricultural development. Herein, thiazole copolymer microspheres integrated with zinc-based metal-organic framework antimicrobial materials (ZIF-8@P(TMA-MA)) were successfully synthesized via coordination polymerization of thiazole copolymers and the organic ligand 2-methylimidazole (2-MIm). The resulting ZIF-8@P(TMA-MA) composite exhibited remarkable antibacterial properties, achieving a 99.9 % inhibition rate against E. coli and S. aureus within 24 h in aqueous solution, with the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of 0.50 mg/mL and 1.00 mg/mL, respectively. For mycorrhizal fungi , ZIF-8@P(TMA-MA) demonstrated sustained antibacterial activity over 168 h, maintaining an antimicrobial efficacy of 99.9 %. Impressively, this exceptional performance was attributed to the synergistic interaction between the five-membered thiazole heterocycles and ZIF-8. Additionally, the application of ZIF-8@P(TMA-MA) in maize growth experiments yielded promising results, highlighting its ability to enhance plant growth. This work presents an effective antibacterial platform based on PolyMOFs, demonstrating their innovative potential applications in promoting plant growth and protecting crops from microbial damage.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Gen Li,Jinan Li,Ya Wang,Yuhang Du,Hongyan Xu,Yan Wang
In this research, a two-step hydrothermal method was used to fabricate a NO 2 sensor based on WO 3 @ZIF-8 core-shell nanorods grown on ceramic tubes. The material's morphology, nanostructure, and composition were thoroughly characterized. The nanocomposites consisting of WO 3 @ZIF-8 showed significant sensing response (65) toward 50 ppm NO 2 at 200 °C. The WO 3 @ZIF-8 core-shell nanomaterials demonstrated exceptional selectivity to NO 2 against TEA and possessed good repeatability. Moreover, the distinctive core-shell nanorods structure promote the process of transferring the electrical charge of the carrier and the response to the targeted gas. The outer coating of ZIF-8 microporous material, with small pore window size (0.5–0.7 nm), had a sieving effect on large molecular interference gases. Further, we combined density functional theory (DFT) calculations and molecular dynamics simulations to investigate the reaction mechanism of the sensors.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Boyang Qin,Jiao Chen,Fan Xu,Jinxin Zou,Wenfang Wang,Yu Lv,Luyu Tian,Lan Zhou,Jun Feng
Developing efficient heterojunction structures is of critical importance for boosting solar energy conversion in photocatalysis. Herein, a ZnS-ZnO heterojunction is fabricated via pyrolysis of zeolitic imidazolate framework-8 (ZIF-8) followed by in-situ sulfidation. Due to the formation of heterojunction, the separation efficiency of photogenerated carriers can be efficiently enhanced. As a result, the as-fabricated ZnS-ZnO heterojunction exhibited a H 2 O 2 formation rate of 6.88 mmol g⁻¹ h⁻¹ , which is 3.75-fold that of ZnO. The mechanism revealed that •OH and •O 2 - were active species involved in the photocatalytic H 2 O 2 production process. Moreover, the as-prepared samples have been successfully applied to degrade norfloxacin and exhibited excellent removal efficiency. This work provides an efficient route to develop highly efficient photocatalyst based on metal-organic frameworks (MOF).
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ACS Applied Bio Materials
·
2025
·
IF 4.7
Zhichao Zhang,Xijing Zhuang,Xufeng Dong,Jingyuan Zhao,Hao Zhang,Hong Zheng,Chang Xu
The moist wound environment of the human body immediately following injury is highly susceptible to microbial colonization and subsequent infection, potentially triggering a prolonged inflammatory response. Existing dressings tend to be more monofunctional, making it difficult to cope with wound bleeding and bacterial growth at the same time. The development of more effective wound dressings is a critical priority in contemporary wound care. In this study, we developed a hydrogel wound dressing comprising two components: (1) antimicrobial particles of curcumin (Cur)-loaded bimetallic organic framework (Cu/ZIF-8), and (2) a carrier hydrogel formed by methacryloylated gelatin (GelMA) cross-linked with methacryloylated hyaluronic acid (HAMA). The experimental results confirmed the successful loading of curcumin with 45.6% for Cu/ZIF-8@Cur. In addition, the material exhibits pH-responsive behavior, excellent biocompatibility (>80% cell survival), low hemolytic activity (<5%), and potent antimicrobial activity (≥99%) against E. coli and S. aureus. It is stable under neutral conditions and releases bactericidal particles under bacterial infection (in an acidic environment) to achieve sterilization. This study addresses the limitations of gelatin-based dressings, such as inadequate hemostatic capacity and weak antimicrobial performance, and it demonstrates promising potential for clinical translation.
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhonghang Xia,Han Zheng,Huiming Ji,Yiwen Zhang
H 2 gas sensors with facile preparation, high sensitivity and low detection limits are crucial for hydrogen energy safety. Given the high surface area, abundant porosity and high stability, zeolitic imidazolate frameworks (ZIFs) provide a potential development path for hydrogen sensors. In this work, ZIF-67@ZIF-8 modified with palladium nanoparticles (Pd NPs) was synthesized by room-temperature solution synthesis and NaBH 4 reduction method. The xPd@ZIF-67@ZIF-8 (x=10, 20, 30, 40) samples exhibit a rough mesoporous surface due to etching of NaBH 4 and feature a uniform distribution of Pd NPs. The modification of Pd NPs broadens the hole accumulation layer (HAL) of ZIF-67@ZIF-8 and decreases the resistance (from ~500 to 1 MΩ), thereby reducing the operating temperature. It is noteworthy that the operating temperature zone of 20 Pd@ZIF-67@ZIF-8 is 85-115 ℃ with higher hydrogen sensitivity than the other sensors at optimum operating temperature (≥ 100 ℃). Meanwhile, the 20 Pd@ZIF-67@ZIF-8 sensor demonstrates a rapid response speed to low concentration H 2 (response to 50 ppm H 2 within 8 s) on account of the spillover and catalytic effects of Pd NPs. Furthermore, the 20 Pd@ZIF-67@ZIF-8 sensor possesses a relatively low theoretical detection limit (16.5 ppb), and exhibits excellent moisture resistance, cycle and long-term stability. This sensitive material provides a prospective avenue for hydrogen energy safety monitoring.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Xiong Yujie,Li Guo,Feng Dunfeng,Lao An,Wu Hanqi,Chen Jiabin,Nie Yanyan,Zhang Weizhen,Zheng Zheng
Microcystin-LR (MC-LR), a cyanotoxin frequently generated during algal blooms, has drawn significant attention owing to its widespread occurrence and severe toxic effects. The development of efficient methodologies for removing MC-LR is essential to address the challenges posed by eutrophication-related pollution. In this study, we synthesized three porous carbon materials derived from zeolitic imidazolate framework-8 (ZIF-8) at varying carbonization temperatures and systematically evaluated their adsorption efficiency for MC-LR removal. The experimental data indicated that the saturation capacities of MC-LR adsorption on ZIF-8, CZIF-700, CZIF-950, and CZIF-1200 were 3.10, 3.98, 35.97, and 13.53 mg g −1 , respectively. Remarkably, CZIF-950 exhibited both the highest adsorption capacity and the fastest equilibrium time (< 5 min), outperforming all other adsorbents by a significant margin. Furthermore, adsorption isotherm and kinetic analyses revealed that the adsorption process aligned with the Langmuir model and followed the pseudo-second-order kinetics. Material characterization revealed that CZIF-950 achieves highly efficient MC-LR removal through synergistic adsorption mechanisms involving electrostatic interactions, hydrogen bonding, hydrophobic effects, and π-π stacking, facilitated by its optimal pore structure, large specific surface area, and unique structural characteristics. Our study provides valuable insights into the design of advanced metal–organic framework-derived adsorbents for the efficient removal of MC-LR and other environmental contaminants. Graphical abstract
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mengyuan Cao,Bicong Wang,Yuchao Deng,Da-Wei Pan,Xiao-Jie Ju,Rui Xie,Zhuang Liu,Xing-Long Zhou,Mao-Jie Zhang,Wei Wang,Liang-Yin Chu
Anthocyanins are promising natural antioxidants widely present in plants. While enzymatic catalytic hydrolysis is a feasible strategy for the extraction of bioactive compounds from plants, the limited stability of free enzymes poses a significant challenge to this approach. Enzyme immobilization using zeolitic imidazolate framework-8 (ZIF-8) demonstrates considerable potential for improving enzymatic tolerance. However, enzyme@ZIF-8 encounters challenges due to reduced bioactivity, primarily attributed to the microporous structure of ZIF-8. To address these limitations, defect-induced mesopores are created in multi-enzyme@ZIF-8 through in-situ millifluidic synthesis, followed by UV post-treatment to introduce additional surface defects. These multi-enzyme@ZIF-8/UV nanoparticles adhere to black rice powder via electrostatic interactions, thereby facilitating the cell wall breakdown. The anthocyanin extraction yield of multi-enzyme@ZIF-8/UV reaches 10.76 mg/L, representing a 31.7 % increase compared to multi-enzyme@ZIF-8 without UV post-treatment. This study provides defect-engineered porous ZIF-8 biocomposites that simultaneously enhance the stability and catalytic activity of encapsulated enzymes for efficient extraction of plant-derived polyphenolic flavonoids, demonstrating broad potential in sustainable biocatalysis and natural product recovery.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Hongtao Wang,Yuanchao Xie,Yang Liu,Yaodan Zhang,Jianan Ma,Jiaqi Yang
The enhanced sensitivity and selectivity of NO 2 gas sensors are crucial for atmospheric environmental monitoring. In this study, a novel NO 2 gas sensor based on small-sized ZIF-8/In 2 O 3 core-shell nanocube has been developed through a simple solvothermal method along with in situ modification. The ZIF-8 coating significantly increased the specific surface area of the In 2 O 3 nanocubes from 60.64 m 2 /g to 140.84 m 2 /g, while also boosting the adsorption of oxygen ions on the surface. Gas-sensing tests revealed that the ZIF-8/In 2 O 3 composites exhibited a response of 56.3 to 1 ppm of NO 2 , with an exceptionally low detection limit of 1 ppb. Notably, the sensor demonstrated outstanding selectivity for NO 2 over other potential interfering gases. The remarkable NO 2 sensing performance of the ZIF-8/In 2 O 3 composites can be attributed to the grain boundary effects in the In 2 O 3 nanocubes (with side lengths of approximately 40–50 nm), as well as the sensitizing and filtering effects of the ZIF-8 layer. This work holds significant promise for the rapid detection of low-concentration NO 2 gases in various applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Meng Xu,Mianyu Bao,Han Zhang,Chun Xu,Yanmao Dong,Yan Yuan,Jie Liu,Li Jiang
The development of intelligent coatings shows great potential for sustained corrosion protection. In this study, ZIF-8 was combined with graphene oxide (GO) and the corrosion inhibitor 1,10-Phenanthroline (Phen) to prepare PZ 8 G nanomaterials. These nanoparticles were introduced into a dispersed carbon nanotube enhanced water-borne acrylic epoxy resin to fabricate a corrosion inhibition coating (PZ 8 G/DCE), followed by electrodeposition of a polypyrrole (PPY) outer film to construct a PZ 8 G/DCE/P bilayer architecture with enhanced anti-corrosion performance. The PZ 8 G composites exhibited improved compatibility with acrylic epoxy resin compared to pristine ZIF-8, and the PZ 8 G/DCE/P bilayer coating presented satisfactory adhesion. This coating effectively enhanced the corrosion resistance of 304SS in both acidic and saline environments, increasing the corrosion potential by 0.36 V and 0.3 V, respectively. The coating demonstrated significant efficacy in acidic conditions, in which the EIS tests confirmed stable protection over 30d of immersion, while SEM characterization after 60d of immersion revealed it maintained structural integrity with minimal morphological changes. Furthermore, the self-healing capability of PZ 8 G/DCE/P coating system was verified through EIS measurements on artificial scratches combined with elemental analysis, which demonstrated the active release of inhibitors and the formation of protective composites at damaged region. The synergistic combination of PPY, which exhibits dual functionality as both anodic protection and physical barrier, with actively corrosion inhibiting PZ 8 G nanofillers, effectively provided a sustained active-passive corrosion protection for stainless steel under aggressive conditions. This work suggests a promising strategy for designing smart anti-corrosion materials.
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