MICROCHEMICAL JOURNAL
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2025
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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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高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Jijun Guan,Liwei Wang,Fugang Xu,Guangran Ma
Ratiometric electrochemical probes are vital for reliable sensing but often suffer from complex preparation, reference molecule leakage, and single function. To address these limitations, this study reports a flower-like Cu-doped zeolite imidazolate framework (Zn 0.5 /Cu 0.5 /Co-ZIF) prepared at room temperature via simple stirring. This material acts as both an electrode material and a robust ratiometric probe for detecting catechol (CC) and acetaminophen (AP). Compared with pristine Zn/Co-ZIF, Cu doping confers several advantages: transforming lamellar Zn/Co-ZIF into a flower-like structure for enhanced electron and mass transfer; significantly improving redox current of CC/AP for high sensitivity; and generating a stable Cu-based redox signal as an internal reference, improving accuracy. The sensor achieved wide linear ranges (CC: 0.5–150 μM; AP: 0.2–300 μM) and low detection limits (CC: 0.12 μM; AP: 0.04 μM) for determination of phenol compounds. Compared to single-signal assay, the ratiometric approach showed lower RSDs and superior linear correlations. The sensor also achieved satisfactory simultaneous detection of CC and AP, along with accurate quantification in lake water samples. This work presents a facile strategy for a MOF based reference probe, offering a promising platform for stable and accurate ratiometric electrochemical sensors.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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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
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2025
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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
Journal of Energy Storage
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2025
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IF 9.8
Yingzi Hua,Sijing Yang,Jianxin Xing,Heqin Li,Zhenzhen Wei,Yan Zhao
Nanofibrous separators with their inherent high porosity exhibit the outstanding advantages of low resistance and high liquid retention, which can significantly enhance the charging-discharging performance of lithium-ion batteries (LIBs). However, the weak mechanical strength of nanofiber separators poses an obstacle to the safe operation of the batteries. Herein, we develop a robust nanofibrous composite separator (CGPM) with a gradient distribution along the thickness direction by in-situ generating different contents of zeolitic imidazolate framework (ZIF-8) particles on polyacrylonitrile (PAN) nanofibers. Such a structural design endows the CGPM separator with high porosity (88.3 %) and a strength that is greatly improved by 148 % compared with that of the pure PAN. The mechanical enhancement mechanism can be attributed to the ideal interface elimination caused by the “continuous electrospinning and in-situ generation” method and the stress relaxation provided by the gradient distribution of particles. Meanwhile, the CGPM presents excellent ionic transport capacity with high ionic conductivity (2.06 mS cm −1 ) and lithium-ion transference number (0.59), rendering the battery with an initial specific discharge capacity of 151 mAh g −1 at 0.5C and a capacity retention of 93 % after 100 cycles. The designed CGPM holds great promise as a potential material for high-performance LIBs separators, providing valuable insights for the development of advanced battery materials.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Jiajia Li,Guoliang Lai,Ling Li,Wenming Zhang
The rational design of low-cost, efficient, and durable bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical for advancing next-generation energy storage systems. Here, a dodecahedral zeolitic imidazolate framework-67 (ZIF-67) is employed as a structural template to direct the formation of cobalt-tipped nitrogen-doped carbon nanotube arrays (Co@NC@NCNT). This hierarchical architecture integrates high electrical conductivity with abundant accessible active sites. By optimizing the calcination temperature and melamine content, the resulting Co@NC@NCNT-750-10 catalyst achieves a high ORR half-wave potential of 0.821 V and a low OER overpotential of 370 mV. When applied in rechargeable Zn-air batteries (RZABs), it delivers a peak power density of 136.4 mW cm −2 and a specific capacity of 722.9 mAh g⁻¹, outperforming commercial Pt/C and RuO 2 benchmarks. The assembled RZAB exhibits excellent cycling stability and energy efficiency, underscoring the promise of this catalyst system for practical implementation in high-performance, metal-air energy storage technologies.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2025
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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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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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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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高影响因子
CERAMICS INTERNATIONAL
·
2025
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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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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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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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高影响因子
ACS Applied Nano Materials
·
2025
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IF 5.5
Lingling Li,Zihao Lv,Hao Jiang,Xiaoxian Zhao,Lan Wu,Xiuming Cao,Helan Xu,Qufu Wei,Qingqing Wang
A pH-responsive bacterial cellulose (BC)-based composite nanofiber membrane functionalized with rose bengal (RB)-encapsulated ZIF-8 (BC/RB@ZIF-8) was developed via in situ growth for the targeted therapy of bacterial stomatitis. The BC film enhanced the photodynamic effect, addressing the challenges of photosensitizer aggregation-induced quenching and its reuse. The BC/RB@ZIF-8 nanofiber membrane demonstrated sustained photodynamic activity, maintaining a stable singlet oxygen (1O2) quantum yield under continuous 130 min irradiation. The nanofiber membrane exhibited robust mechanical properties, including a tensile strength greater than 33 MPa, high water absorption capacity (916.61 ± 4.7%), and optimal moisture vapor transmission rate (40.56 ± 1.37 g/m2·h), meeting the key requirements for oral wound dressings. In acidic infection microenvironments, ZIF-8 degradation facilitated the synchronized release of Zn2+ and RB, leading to dual-mode antibacterial action: (1) the continuous release of Zn2+ from ZIF-8 disrupts bacterial cell membranes through electrostatic interactions; and (2) ROS generation via Type I (•OH) and Type II (1O2) pathways, resulting in irreversible damage to bacterial cell membranes and components. This synergistic mechanism led to a 99.99% eradication of S. aureus and MRSA under acidic conditions, outperforming conventional therapies. Cytocompatibility and hemocompatibility were confirmed in accordance with ISO 10993 standards. The BC/RB@ZIF-8 nanofiber membrane represents a significant advancement in pH-responsive antibacterial materials, offering a promising alternative to antibiotic-based treatments for biofilm-infected oral wounds.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
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IF 4.3
Xiaoting Feng,Chenlu Liu,Kunkun Ren,Xinglei Zhao,Longjie Liu,Keming Zhang,Xiaohe Tian,Qingnan Wang,Xiangyu Liu,Yueyangchao Yu,Tianhe Gu,Shaofei Wang
The urgent need for efficient CO 2 capture technologies to mitigate climate change has driven the advancement of membrane-based separation systems. We report a mixed matrix membrane design through the in-situ growth of a ZIF-8 gel network within a Pebax-1657 matrix. By tuning the solvent ratio and concentration of modulator, ZIF-8 gel rather than particles are formed within the polymer, establishing a three-dimensional interconnected MOF network that ensures homogeneous filler dispersion and creates continuous gas transport nanochannels. The optimized membrane achieves a remarkable CO 2 permeability of 183.9 Barrer and a CO 2 /N 2 selectivity of 73.3, surpassing the 2008 Robeson upper bound. These values represent 190.4 % and 34.9 % enhancements in permeability and selectivity, compared to the pristine polymer. The membrane also demonstrates robust operational stability and maintains > 95 % of its initial performance over 60 days. This work offers a promising solution to creating continuous channels in CO 2 separation membranes.
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高影响因子
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