Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124490
·
IF 7.5
Kaixin Qian,Xiao Ma,Mei Hong,Fuping Qian
Conventional air filtration media struggle to simultaneously address secondary biological pollution, the efficiency-permeability trade-off, and the environmental burden associated with disposable polymer filters. Direct blending of agglomerated or dense fillers can destabilize the electrospinning jet, disrupting the fiber network and increasing airflow resistance. In this study, biodegradable PLA nanofibers were combined with eugenol-loaded ZIF-8 nanoparticles to construct an antibacterial air filtration membrane. Prepared through an aqueous route, ZIF-8 served a dual function by regulating the architecture of the fibrous network and acting as a microporous reservoir for the natural antibacterial molecule eugenol. Comparison of pristine PLA, PLA/ZIF-8, and PLA/EUG@ZIF-8 membranes clarified each component's contribution. Pristine PLA provided a biodegradable fibrous matrix but showed inadequate filtration and negligible antibacterial activity. The incorporation of ZIF-8 optimized membrane morphology, enhanced particle capture, and imparted moderate bacterial inhibition. Notably, confinement of eugenol within ZIF-8 pores further enhanced antibacterial activity without disrupting the optimized membrane structure or air permeability. The PLA/EUG@ZIF-8 membrane delivered PM0.3, PM1.0, and PM2.5 filtration efficiencies of 99.62%, 99.99%, and 99.99%, respectively, with a low pressure drop of 69 Pa and a maximum quality factor of 0.1335 Pa⁻¹ . The composite also achieved near-complete inhibition of Escherichia coli (99.74%) and Staphylococcus aureus (99.48%). Numerical simulations showed a filtration trend consistent with the experimental results, indicating that the improved performance was mainly associatedwith the optimized fiber-pore structure rather than simple membrane densification. Thus, MOF-mediated natural antibacterials effectively fabricate biodegradable filters with excellent PM capture, low resistance, and strong antibacterial activity, promoting eco-friendly membranes.
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JOURNAL OF DRUG TARGETING
·
2025
·
IF 3.9
Haolong Qi,Yingjie Geng,Yuan Li,Yanqing Wu,Xiaoqing Cai
Immunotherapy has attracted widespread attention as a new tumour treatment method. Because of the low response rate, immunotherapy is only effective for some patients. With the continuous exploration of tumour immunity, the concept of immunogenic cell death (ICD) has brought new vitality to many cancer treatment methods, including chemotherapy. However, the immune effect of ICD induced by chemotherapy is often influenced by immune cell types, the tumour microenvironment, and other factors. Based on this, we constructed a hybrid nano-platform based on ZIF-8 to realise chemo-immunotherapy for tumour treatment by loading the chemotherapy drug doxorubicin (DOX), the indoleamine 2,3-dioxygenase (IDO) inhibitor 1-methyltryptophan (1MT), and the immune adjuvant CpG. In order to ensure the smooth arrival of the nanoparticles at the tumour site, carboxymethyl chitosan (CMCS) was introduced for surface modification to enhance the stability of the nanoparticles in vivo. The hybrid nano-platform not only successfully induced ICD in tumour cells but also achieved an 85.6% inhibition rate in the 4T1 tumour model, proving its excellent tumour-killing ability. In conclusion, the successful construction of the hybrid nano-platform provides a new idea and method for multi-modal combined therapy of tumours.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Danfeng Du,Ke Zhang,Zhisong Han,Zexin Liu,Xiurong Guo
Thermal-insulating and flame-retardant materials, as a class of functional materials with unique properties, play a pivotal role in various fields. The study utilized silica aerogel as the thermal-insulating base material and incorporated ZIF-8-encapsulated polyethylene glycol-based shape-stabilized phase change materials (ZIF-8@PEG) to fabricate silica aerogel-based ZIF-8@PEG composites (ZP-SA) via a sol-gel method. The microstructure, thermal stability, and molecular architecture of the composite phase change materials were characterized through scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The experimental results demonstrated that the prepared ZP-SA exhibited a three-dimensional skeletal structure, with a phase change enthalpy of 80.98 J/g and phase transition temperatures of 53.18 °C (melting) and 26.89 °C (solidification). The material displayed excellent thermal stability during heating-cooling cyclic tests. In terms of flame retardancy, ZP-SA achieved a limiting oxygen index (LOI) value of 30.2 %. These findings confirm that the incorporation of ZIF-8@PEG effectively enhances the thermal-insulating and flame-retardant performance of the composite material. The research provides a novel theoretical framework and practical insight for the design of advanced thermal-insulating and flame-retardant composite materials, demonstrating significant academic and applied value.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Shuyang Sun,Mengdi Yao,Yu Gao,Ping Wang,Chengke Wang
A colorimetric method for fish freshness monitoring was developed. After coating magnetic Fe 3 O 4 nanoparticle with zeolitic imidazolate framework-8 (ZIF-8), the horseradish peroxidase (HRP) was adsorbed onto it with high efficiency due to the large surface area of ZIF-8, the mesoporous SiO 2 was further decorated onto the Fe 3 O 4 @ZIF-8@HRP to form Fe 3 O 4 @ZIF-8@HRP@SiO 2 nanostructure, in order to minimize the release of HRP, and enhance the stability and catalytic activity of HRP. The morphology, elemental composition, surface functional groups of Fe 3 O 4 @ZIF-8@HRP@SiO 2 were characterized by transmission electron microscopy, X-ray diffraction, energy dispersive spectroscopy, Fourier transform infrared spectroscopy. Hypoxanthine (HX), which formed due to the degradation of adenosine triphosphate in fish, can be oxidized by xanthine oxidase and generated H 2 O 2 intermediate. Thereafter, in the presence of H 2 O 2 , HRP within Fe 3 O 4 @ZIF-8@HRP@SiO 2 nanostructure would catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product of TMBox, allowing an indirect colorimetric sensing of HX content. Under optimal conditions, HX was selectively and sensitively detected in the range of 0–100 μM, with a detection limit of 0.133 μM. Finally, the proposed method was applied to determine the HX content in grass carp continuously stored at 4 °C and 30 °C for 96 h.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 9
Ruoman Ji,Lijuan Gao,Yibo Zan,Xingchi Zhang,Qing Zhao,Ting Wang
A novel chiral mixed matrix membrane (MMM) was prepared by biomimetic mineralization to encapsulate bovine serum albumin (BSA) within ZIF-8, followed by film formation. In this process, a new ratio of ZIF-8 material and two biocomposites with different precursor ratios were synthesized via a one-pot co-precipitation method under ambient conditions. BSA@ZIF-8 (Zn 2+ /2-methylimidazolate (2-mIM) = 40:320 mM) demonstrated the optimal separation of 1-phenylethanol (PE), with an enantiomeric excess ( ee ) of 52.79%. Subsequently, the combination of BSA@ZIF-8 with polyethersulfone (PES) to form a chiral MMM was investigated, and the effects of the concentration of the feed solution, the proportion of biocomposite in the membrane, the thickness of the membrane and the permeation time of the chirality on the enantiomeric separation were examined. The chiral MMM achieved complete enantioseparation ( ee = 100 %). Both the biocomposite-containing membrane and the free biocomposite retained this performance throughout the stability tests, demonstrating that immobilizing BSA within ZIF-8 markedly enhanced the robustness of the biomacromolecule. Finally, molecular docking studies revealed the presence of hydrogen bonding and hydrophobic forces, especially hydrogen bonding, between BSA@ZIF-8 and the racemate, which explained the selective chiral recognition ability of BSA@ZIF-8 towards the racemate PE.
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Journal of Environmental Chemical Engineering
·
2021
·Vol. 9
·期 6
·106490
·
IF 5.909
Yiyang Zeng,Sheng Liu,Jichen Xu,Ai Zhang,Yuxin Song,Long Yang,Ailin Pu,Yuran Ni,Fangting Chi
With the vigorous development of nuclear power and the shortage of terrestrial uranium resources, the extraction uranium from seawater is extremely attractive for human development. Herein, we first report ZIF-8 in-situ growth on amidoximerized polyacrylonitrile (PAO) porous materials. The porous material is a small sphere with certain mechanical strength synthesized by solvent-induced phase separation method. Because ZIF-8 nanocrystals are well-formed and evenly distributed within the PAO beads, ZIF-8/PAO has a high specific surface area (386 m 2 g -1 ) and rich pore structure . At adsorption experiment, the highest adsorption capacity of ZIF-8/PAO reached 803 mg g -1 at pH = 4. Furthermore, competitive adsorption experiment and simulated seawater test was studied. The selectivity for uranium was excellent (K d = 1.7 × 10 5 mL g -1 ) and uranium adsorption rate reached 99% at 3 ug L -1 . XPS analysis shows that U(VI) is chelated by imidazole-N atoms and amidoxime groups in ZIF-8/PAO. Therefore, ZIF-8/PAO can be considered a highly promising adsorbent for uranium extraction from wastewater and seawater.
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ACTA PHYSICO-CHIMICA SINICA
·
2016
·Vol. 32
·期 9
·2377-2382
·
IF 0.844
XU Li-Hong,ZHAO Dong-Yu,LI Yang,GUO Lin
ZIF-8 (zeolitic imidazolate framework-8), a kind of metal-organic framework material, is one of the most important energy materials and widely used in various fields because of its high specific surface area and excellent thermal stability. In this research, we synthesized ZIF-8 by
the traditional hydrothermal synthesis method in a purely methanol system. The obtained particles were ~250 nm in diameter with a rhombic dodecahedron morphology. Moreover, the prepared ZIF-8 materials exhibited good thermal stability and a large surface area. We also found that the rhombic
dodecahedral ZIF-8 enhanced the electro-optical (E-O) properties of nematic liquid crystal (N-LC) depending on the ZIF-8 doping concentrations. ZIF-8 in N-LC cells adsorbs ionic impurities and suppresses the screen effect, leading to a lower driving voltage and faster response time. At a ZIF-8
doping concentration of 0.05%(w, mass fraction), the N-LC cells showed the best E-O properties, including the lowest threshold voltage (V
th) of 0.92 V, the lowest saturation voltage (V
sat) of 1.31 V, and a short response time of 10.04 ms. However, above
a doping concentration of 0.05%(w) ZIF-8 aggregated in N-LC cells, affecting the arrangement of the LC molecules and trapping less impurity ions, which deteriorated the E-O properties of N-LC.
研究领域:
材料科学
·
光电子学
·
纳米技术
·
液晶技术
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yuedong Li,Hongdan Wu,Zhihui Zhou,Xianyuan Fan,Wenming Fu,Guoyuan Lei,Qiuyang Huang,Junlin Peng
To address the structural defects and performance limitations caused by nanoparticle aggregation and insufficient interfacial compatibility in conventional thin-film nanocomposite polyamide (PA) nanofiltration membranes, an interfacial engineering strategy was developed to construct organic solvent nanofiltration membranes via the in situ growth of amino-functionalized ZIF-8 (ZIF-8-NH 2 ) nanoparticles. A continuous and well-anchored ZIF-8-NH 2 interlayer was introduced between the polyimide support and the PA selective layer, which effectively mitigated nanoparticle aggregation and enhanced interfacial integrity, thereby promoting the formation of a dense and uniform PA layer. Performance evaluation demonstrated that, at an optimized ZIF-8-NH 2 growth cycle of three, the resulting membrane exhibited a pure-water permeance of 41.3 L·m −2 ·h −1 ·bar −1 and a methanol permeance of 16.9 L·m −2 ·h −1 ·bar −1 , while achieving rejection values of 65.1 % for NaCl and 99.9 % for Na 2 SO 4 . In ethanol, the membrane exhibited a low molecular weight cutoff of 456 g·mol −1 and maintained Congo red rejection above 99 % during continuous operation for 5 days, confirming its structural stability and operational durability.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121293
·
IF 7.2
Yang Liu,Tingting Fan,Changhao Liu,Yun-Ze Long
Managing oily wastewater under harsh conditions poses a significant challenge in environmental protection. Conventional membranes are often ineffective in treating oily wastewater under complex environmental conditions and typically fail to achieve complete oil–water separation. This work reports the preparation of a reduced graphene oxide (rGO)/zeolitic imidazolate framework (ZIF-8) @ polyphenylene sulfide (PPS) fiber membrane by in-situ growth of ZIF-8 on the rGO-coated PPS fiber membrane. The incorporation of the rGO increases the roughness of the fibrous membrane and enhances the bond between the polymer membrane and the ZIF-8 layer, as the oxygen-containing groups of rGO can interact with the Zn 2+ of the ZIF-8 precursor, facilitating the preferential growth of ZIF-8 crystals on the rGO surface. The resulting rGO/ZIF-8@PPS membrane exhibits underwater superoleophobic and under-oil superhydrophilic properties, endowing it with switchable oil-water separation capabilities (oil-passing water-blocking or water-passing oil-blocking). During the oil (chloroform)/water separation process, it achieves high efficiency (99.96 %) and flux (27,176 L m −2 h −1 ). After 10 separation cycles using either water or oil as the permeating phase, the membrane maintains a high filtration flux (20,500 L m⁻² h⁻¹) and separation efficiency (99.97 %). Additionally, it can efficiently separate a range of oil/water mixtures under different acidic and alkaline conditions, retaining excellent separation efficiency and flux even after 10 cycles. This composite fibrous membrane provides a novel approach for treating large-scale oily wastewater in harsh environments.
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高影响因子
Catalysts
·
2026
·Vol. 16
·期 1
·80
·
IF 4
Rong Xing,Xinyu Zhang,Zhiqian Li,Yingna Chang,Rongguan Lv,Yuzhen Sun,Zhiyuan Zhao,Kefan Song,Jindi Wang,Huayu Wu,Fangfang Ren,Yu Liu,Jing Tang,Peng Wu
Photocatalysis driven by the visible light of solar energy has received considerable attention in the field of environmental remediation and clean energy production. In this work, monomeric sulfonated palladium phthalocyanine (PdPcS) was encapsulated in zeolitic imidazolate frameworks-8 (ZIF-8) crystals (denoted PdPcS@ZIF-8) through electrostatic interaction in the ammonia system, while their photocatalytic activity was well-maintained together with the structural regularity of ZIF-8 crystals. For comparison, a PdPcS/ZIF-8 sample was obtained from the traditional impregnation method. The13C NMR and UV-DRS spectra confirmed the difference between PdPcS@ZIF-8 and PdPcS/ZIF-8 in terms of the chemical environment effect for PdPcS. Under visible light, the optimal PdPcS@ZIF-8 catalyst achieved complete degradation of 0.1 mM bisphenol A in 120 min. It also exhibited excellent stability, retaining 81.5% activity after four cycles, far outperforming the impregnated sample (32.5%) due to effective encapsulation preventing PdPcS leaching. This versatile one-step synthetic strategy is expected to be useful for designing novel macromolecules@MOF composite materials.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Xuehua Ruan,Xinfang Zhang,Ziyuan Zhou,Xiaobin Jiang,Yan Dai,Xiaoming Yan,Gaohong He
Continuous ZIF-8 membranes have showed great potential for gas separation. The prospect is subjected to two pivotal issues: shorten the time to construct the ZIF-8 selective layer and tightly bond ZIF-8 layer onto the substrate. In our previous work, Zn(II)-doped polydopamine (Zn-PDA) linkage layer was proposed and effectual to solve these problems. In this research, the mechanism likely to support the improvements is studied intensively. The dominant factor is that Zn(II) ions can be chelating and depositing sufficiently in the linkage layer. The strongly alkaline condition for dopamine polymerization is also beneficial to Zn(II) chelation and deposition, which has been confirmed by DFT simulation, together with characterization tests, e.g., XPS, FTIR, and Zn(OH) 2 precipitation for Zn(II)–O coordination. Phenolic hydroxyl groups are deprotonated in the strongly alkaline environment with high Mulliken charge (−0.515 & −0.524 e) and become strong chelation sites to Zn(II). Subsequently, Zn(II) clusters extensively filled in the PDA linkage layer are acting as the starting sites for ZIF-8 heterogeneous nucleation and growth. The correspondence between Zn(II) clusters probed by EDX and nascent ZIF-8 crystals visualized by FE-SEM can support this phenomenon clearly. On the whole, the abundant starting sites in Zn-PDA enhanced ZIF-8 growth, and ZIF-8 growth from the rooting-in Zn(II) clusters created an indented and hinged boundary for tightly bonding ZIF-8 layer onto the substrate.
研究领域:
材料科学
·
膜技术
·
配位化学
·
纳米材料
·
气体分离
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高影响因子
DESALINATION
·
2026
·
IF 9.9
Shu Bi,Huoying Tan,Shiqiang Liang,Fan Yang,Jiamei Xin,Wenbin Wang,Zhi Geng,Chi Wang
Membrane distillation (MD), a promising thermal desalination technology, faces a critical challenge in its practical deployment: membrane wetting induced by low-surface-tension contaminants, which compromises separation efficacy and long-term operational stability. To address this challenge, we conceptualize and fabricate a photo-responsive composite nanofiber membrane endowed with an intrinsic self-cleaning capability to overcome this limitation. This MoO 3 @ZIF-8/PAES-CF 3 composite membrane is architected with a hierarchical roughness and engineered to exhibit dynamic, light-gated anti-wetting behavior. The strategic integration of hydrophobic and photoactive MoO 3 @ZIF-8 nanoparticles, within a fluorinated poly (arylene ether sulfone) (PAES-CF 3 ) matrix via electrospinning yields a robust, photoactive interfacial structure that concomitantly enhances surface hydrophobicity and mechanical integrity. In direct contact membrane distillation (DCMD), the optimized membrane demonstrates exceptional performance, achieving a water flux of 21.3 L·m −2 ·h −1 while maintaining a salt rejection rate exceeding 99.9%. Crucially, the membrane shows excellent resistance to wetting induced by sodium dodecyl sulfate (SDS) under light illumination, withstanding concentrations up to 0.15 mM. Moreover, under a feed solution containing 0.1 mM SDS, the membrane maintains stable operation for 24 h. This work presents a novel strategy for designing anti-wetting MD membranes, providing a foundation for the development of environmentally responsive and adaptive separation materials.
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高影响因子
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