APPLIED ORGANOMETALLIC CHEMISTRY
·
2026
·Vol. 40
·期 2
·e70510
·
IF 0
Haoyue Xu,Si Lu,Xiyue Feng,Yunhui Zhang,Xingru Liu,Tingting Shu,Ling Li,Yingxi Wang
Metronidazole (MNZ), a refractory nitroimidazole antibiotic, poses significant environmental risks due to its persistence in aquatic systems. In this study, a hollow-structured ZIF-67-derived CoS (ZD-CoS) catalyst was synthesized to activate peroxymonosulfate (PMS) under simulated sunlight for MNZ degradation. The ZD-CoS/PMS system achieved 91.0% MNZ removal within 10 min under light irradiation, exhibiting a kinetic rate 2.4 times faster than that in the dark, which was attributed to the photothermal effect enhancing radical generation. The mechanistic study elucidated that the degradation of MNZ was driven by the collective contribution of reactive species, namely SO 4 − ˙, ˙OH, 1 O 2 , and O 2 − ˙. This synergistic effect was primarily facilitated by the Co 2+ /Co 3+ redox cycle, which served as the core mechanism for PMS activation. Furthermore, the degradation pathways of MNZ were elucidated through LC–MS analysis, indicating processes including hydroxylation, ring cleavage, and oxidation. The catalyst also demonstrated excellent stability over four cycles with low cobalt leaching (< 0.15 mg/L). This work provides a solar-driven, catalytic solution for antibiotic wastewater treatment and offers mechanistic insight into the degradation process.
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JOURNAL OF MEMBRANE SCIENCE
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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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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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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
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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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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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Science China-Materials
·
2021
·Vol. 64
·期 8
·1997-2007
·
IF 8.273
Fan Shuaikang,Wang Shilin,Wang Xiaobin,Li Zhuoyi,Ma Xu,Wan Xinyi,Hussain Shabab,Peng Xinsheng
Smart proton conductive metal-organic framework (MOF) membranes with dynamic remote control over proton conduction show high potential for use in advanced applications, such as sensors and bioprocesses. Here, we report a photoswitchable proton conductive ZIF-8 membrane by coencapsulating polystyrene sulfonate and graphene quantum dots into a ZIF-8 matrix (GQDs-PSS@ZIF-8) via a solid-confined conversion process. The proton conductivity of the GQDs-PSS@ZIF-8 membrane is 6.3 times higher than that of pristine ZIF-8 and can be reversibly switched by light due to photoluminescence quenching and the photothermal conversion effect, which converts light into heat. The local increase in temperature allows water molecules to escape from the porous channels, which cuts off the proton transport pathways and results in a decrease in proton conductivity. The proton conductivity is restored when the light is off owing to regaining water molecules, which act as proton carriers, from the surroundings. The GQDs-PSS@ZIF-8 membrane responds efficiently to light and exhibits an ON/OFF ratio of 12.8. This photogated proton conduction in MOFs has potential for the development and application of MOF-based protonic solids in advanced photoelectric devices.
研究领域:
材料科学
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物理化学
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纳米功能材料
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膜科学
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光电转换
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智能响应材料
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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
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纳米技术
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液晶技术
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MATERIALS & DESIGN
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2026
·
IF 8.2
Linjun Yang,Xuhui Fan,Weicheng Pan,Yao Jin,Jianle Wang,You Wang,Han Wang,Zhijun Hu
Composition-engineered Cu-doped ZIF-8 was designed for OA therapy. • Cu@ZIF-8 reduced oxidative stress and lipid peroxidation in chondrocytes. • Cu@ZIF-8 suppressed ferroptosis and preserved ECM homeostasis. • Intra-articular Cu@ZIF-8 attenuated OA progression in rats. Engineering metal–organic framework (MOF)-based materials with tunable composition and biological function offers a promising strategy for regulating pathological oxidative microenvironments. Herein, a composition-engineered copper-doped zeolitic imidazolate framework-8 nanoplatform, Cu@ZIF-8, was designed to modulate oxidative stress-associated lipid peroxidation and chondrocyte ferroptosis for osteoarthritis (OA) therapy. The incorporation of copper into the ZIF-8 framework enabled homogeneous elemental distribution while preserving the crystalline structure and high specific surface area of the MOF platform. In H 2 O 2 - and RSL3-induced chondrocyte injury models, Cu@ZIF-8 reduced intracellular ROS accumulation, alleviated lipid peroxidation, preserved mitochondrial membrane potential, restored GPX4/SLC7A11 expression, and maintained extracellular matrix homeostasis. Mechanistic studies suggested that Cu@ZIF-8-mediated ferroptosis suppression was associated, at least in part, with modulation of p38 MAPK/AKT signaling. In a surgically induced rat OA model, intra-articular administration of Cu@ZIF-8 attenuated cartilage degeneration, reduced oxidative and ferroptosis-related damage, and showed no apparent systemic toxicity under the tested conditions. This study establishes a composition-engineered MOF nanoplatform that links copper-doped ZIF-8 design with oxidative stress regulation, ferroptosis suppression, and cartilage protection, providing a materials-design strategy for OA microenvironment modulation. Download: Download high-res image (110KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Rui Li,Han Zhang,Jiayu Gao,Qirui Tu,Rui Jin,Meng He,Fang Zhang,Tunga Kuhana Arsene,Pingping Chen,Huixian Wang,Yuping Tong,Shuangqiao Han,Yatao Zhang
Traditional polyamide nanofiltration membranes are restricted by their permeance-selectivity trade-off and fouling intolerance, which collectively constrains efficient ionic separations. To address these, hydroxyl-rich core-shell ZIF-8 nanoparticles were synthesized via tannic acid-mediated coordination (TA/ZIF-8), achieving polyphenol-tailored structural regulation. Herein, the TA/ZIF-8 nanoparticles were engineered to regulate polyamide membranes fabrication via vacuum-assisted filtration by confining interfacial polymerization. Critically, enhanced hydrophilicity and dispersion were induced by TA-Zn 2+ coordination, while monomer diffusion was restricted by the hydrogen bonding between TA/ZIF-8 and piperazine. Consequently, ultrathin polyamide layers characterized by striped/nodular morphologies and elevated roughness were formed. Modulated by the TA/ZIF-8 interlayer, the crosslinking density was reduced, whereas the surface hydrophilicity and electronegativity were simultaneously augmented. As a result, an exceptional water permeance (31.8 L m −2 h −1 bar −1 ) coupled with a high Na 2 SO 4 rejection (98.3%) and a superior Cl − /SO 4 2− selectivity (46.5) was achieved by the optimized membranes. Furthermore, the membranes demonstrated exceptional antifouling property, robust stability, and outperformed literature NF benchmarks. This work establishes TA/ZIF-8 interlayers as a scalable platform for transcending permeability-selectivity limits in antifouling desalination nanofiltration membranes.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zhang Han,Xu Chun,Xu Meng,Yuan Yan,Liu Jie,Dong Yanmao,Jiang Li
Self-healing anticorrosive coatings are essential for extending the lifespan of metallic materials in aggressive environments. This study presents a novel sandwich-structured coating composed of a polydopamine (PDA) inner layer, a ZIF-67 electroplated interlayer, and MXene/CNTs fillers incorporated into a waterborne acrylic epoxy (EA) matrix. The PDA layer enhances adhesion, while the ZIF-67 interlayer functions as an active inhibitor reservoir that responds to pH changes, releasing Co 2+ and 2-methylimidazole to promote defect repassivation and self-healing. The outer MXene/CNTs layer significantly improves barrier properties by forming a tortuous path for corrosive agents and enhancing interfacial stability. Compared with single-component coatings, the sandwich-structured composite coating exhibited markedly enhanced corrosion resistance in harsh acidic environment, with an obvious increase in corrosion potential. Moreover, a high R ct value of 1.79 × 10 5 Ω cm 2 was maintained by this coating even after 30 days of service, evidencing its durable protection. Under scratched conditions, the coating exhibits efficient self-healing, recovering its impedance and repassivating defects. This work demonstrates the synergistic benefits of the PDA/ZIF-67/MXene system, offering an effective solution for long-term corrosion protection with self-healing properties, suitable for various engineering applications.
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JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 6
·165
·
IF 3.5
Yang Menghui,Gao Zhen,Zhan Haoyu,Bi Mengqi,Huang Naibao,Zhang Junjie,Gan Ziqi,Wang Hao
Developing highly active, durable, and cost-effective oxygen reduction reaction (ORR) catalysts is crucial for fuel cell commercialization through the use of non-precious metal alternatives to platinum. In this study, the tunable dodecahedral Fe-N-C catalysts were synthesized through controlled pyrolysis of Fe-doped zeolite imidazolate framework-8 (ZIF-8) precursors. The optimized 5% Fe@NC-8 catalyst demonstrates excellent ORR performance with an onset potential of 0.92 V vs. RHE, a half-wave potential (E 1/2 ) of 0.83 V vs. RHE, and a limiting diffusion current density (j d ) of 6.06 mA cm −2 , surpassing commercial 20% Pt/C catalysts (onset potential 0.89 V vs. RHE; E 1/2 0.81 V vs. RHE; j d 4.27 mA cm −2 ). It also shows strong durability, retaining 86.16% of its current after prolonged polarization (@0.80 V vs. RHE for 10,000 s) and minimal negative shift in half-wave potential after extensive cycling(@200 mV s −1 for 5000 CV cycles). The enhanced catalytic performance is attributed to (i) possessing a high specific surface area (319 m 2 g −1 ) and favorable porosity to maximize active site accessibility; (ii) having abundant active sites of Fe-N x , graphitic N, and pyridinic N as active catalytic centers; and (iii) forming N-doped carbon matrices to provide a conductive framework. These advantages boost the density of accessible active sites and thus remarkably improve the ORR catalytic activity.
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