INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Jinmei Lu,Jing Jin,Yufei Zhang,Mingming Zheng
Rational engineering of nanocarrier morphology is pivotal for enhancing both the activity and recyclability of immobilized lipases. Although zeolitic imidazolate framework-8 (ZIF-8) represents a leading scaffold for enzyme immobilization, its morphology-dependent conjugation behavior toward lipases remains unexplored. Herein, we prepared five distinct ZIF-8 nanostructures—rhombic dodecahedral (RD), truncated rhombic dodecahedral (TRD), rough rhombic dodecahedral (RRD), flower-like, and flake-like structures. Three lipases (PS, CALB, and AY400SD) were subsequently immobilized to generate a 15-member library. Systematic evaluation demonstrated that carrier morphology plays an important role in biocatalytic performance: PS@ZIF-8-RRD achieved >49% conversion with >99% ee s during the kinetic resolution of 1-phenylethanol; CALB@ZIF-8-TRD yielded 92% conversion in the solvent-free esterification between caproic acid and ethanol; AY400SD@ZIF-8-RD approached free enzyme activity levels in perilla seed oil hydrolysis within biphasic media. Such morphology–activity relationships arise from facet-dependent enzyme orientation and tailored microenvironments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Wenjing Hu,Pengxiang Zhang,Hua Jin,Jiahui Yan,Yuanchen Li,Kunpeng Yu,Weichong Wang,Jiaxin Ma,Yumei Meng,Weijun Xu,Kelin Dong,Yanshuo Li,Yi Liu
Supercritical ethene was employed in MOF membrane processing for the first time. • Pre-deposition of a zinc nitrate hydroxide nanosheet buffer layer was proven effective in enhancing the C 3 H 6 /C 3 H 8 separation performance. • Supercritical ethene-processed ZIF-8 membrane enabled one-step purification of polymer-grade C 3 H 6 to electronic-grade C 3 H 6 . • Much higher C 3 H 6 permeance with no compromise in product purity was achieved on supercritical ethene-processed ZIF-8 membrane. ZIF-8 membranes exhibit great promise for high-efficiency C 3 H 6 /C 3 H 8 separation. Nevertheless, maintaining superior performance from pressurized C 3 H 6 -rich feed streams remains a significant challenge, considering its specific application scenarios (e.g., electronic-grade C 3 H 6 production). In this work, we innovatively utilize supercritical ethylene (scC 2 H 4 ) as medium to synthesize ZIF-8 membranes capable of tolerating pressurized high-C 3 H 6 -ratio feed under sub-freezing temperature. Owing to a wider supercritical operation window of scC 2 H 4 , both nucleation and growth kinetics of ZIF-8 crystallites can be readily optimized over a broad temperature and pressure range; through combing with moderate reversible π-coordination between unique C C double bond of scC 2 H 4 and Zn 2+ ions during membrane processing, an unprecedented platform for microstructure optimization of ZIF-8 membranes was established. The introduction of zinc nitrate hydroxide-based buffer layer prior to scC 2 H 4 processing further contributed to their superior performance. Under practical electronic-grade C 3 H 6 production conditions (i.e., −40 °C, 3 bar, polymer-grade C 3 H 6 feed, and vacuum on the permeate side), our membrane achieved C 3 H 6 /C 3 H 8 selectivity of 169.5 with C 3 H 6 flux of 3.6 × 10 −3 mol m −2 s −1 , allowing efficient removal of C 3 H 6 content from 2998 ppm down to below 50 ppm, which completely fulfilled the purity requirement of electronic-grade C 3 H 6 (>99.99%). Through combining with unique advantages of supercritical processing featuring zero waste emission and complete ligand recycling, our research paves an avenue for eco-friendly fabrication of various MOF membranes with tailored microstructures to achieve outstanding separation performance under practical operation conditions. Download: Download high-res image (432KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Lin Li,Kunpeng Yu,Haixin Sun,Tong Feng,Dayu Liang,Qinqin Xu,Jianzhong Yin
Two-dimensional layered material membranes show great potential in the efficient sieving of molecules. However, balancing permeability and selectivity remains a significant challenge. In this study, ZIF-8 crystals are in situ grown on molybdenum disulfide (MoS 2 ) nanosheets exfoliated via supercritical carbon dioxide (scCO 2 ) for the first time, aiming to fabricate high-permeability MoS 2 @ZIF-8 membranes. It is suggested that the dispersed ZIF-8 crystals act as spacers to alleviate the restacking of MoS 2 nanosheets. The intrinsic microporous structure of ZIF-8, together with the tortuous transport pathways within the stacked MoS 2 layer, synergistically contributes to the size-selective separation performance of the membrane. Dye rejection tests show that the MoS 2 @ZIF-8 membrane exhibits high rejection rates and water permeability for various dye molecules. For example, the membrane has a rejection rate of 99.37% and a water permeability of 76.96 L m −2 h −1 ·bar −1 for Congo Red, and maintains an average rejection rate of 99.30% over 24 h of continuous operation. Moreover, the membrane can efficiently remove various dyes from salt-containing wastewater, with a maximum separation factor (SF) of 179.45 with a permeability of 79.77 L m −2 h −1 ·bar −1 . This method provides a promising solution for treating and purifying wastewater using membrane separation technology.
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Shuheng Ding,Zhenyue Liu,Yujun Guo,Jiayi Qu,Feifei Wang,Davoud Dastan,Xiaoming Tan,Xingtai Chen,Xi-Tao Yin
Sm 2 O 3 -modified ZIF-8-derived ZnO nanoparticles were first prepared by a one-step hydrothermal method. • The maximum response to 100 ppm ethanol was 210 at the operating temperature (275 °C). • The reasons for the improved gas-sensitive performance were explored. Constructing heterojunctions is recognized as an effective strategy for enhancing gas sensor performance. Rare-earth metal oxides, owing to their unique properties, can significantly improve the sensing capability of single-metal oxides. This work produced a ZnO/Sm 2 O 3 heterostructure for ethanol gas sensing via a simple one-step hydrothermal method. A static system was used to investigate the gas-sensing properties of the as-prepared sensors. Compared with the pure ZnO sensor, the ZnO/Sm 2 O 3 heterojunction sensor exhibited a significantly enhanced sensing performance toward 100 ppm ethanol. Specifically, its response increased from 130 to 210, the optimal operating temperature decreased from 295 °C to 275 °C, and the recovery time was shortened from 84 s to 17 s. In addition, the sensor demonstrated good selectivity toward ethanol over other interfering gases, as well as excellent long-term stability, while maintaining good linearity and repeatability. The material was characterized using various techniques, including XRD, XPS, SEM, TEM, BET, UPS, and Hall-effect measurements, in terms of micromorphology, elemental composition and specific surface area, revealing cube-like structures and confirming the successful formation of an n-n heterojunction. Finally, the underlying mechanism for the enhanced gas sensing performance was discussed in detail. Download: Download high-res image (68KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Chen Wang,Shihao Wang,Yunmeng Qu,Pengfei Cheng,Yinglin Wang
Developing ethanol-selective gas sensors remains challenging because structurally and chemically related volatile organic compounds (VOCs) often induce similar responses on semiconductor metal oxide surfaces. Here, we report a zeolitic imidazolate framework-8 (ZIF-8)-enabled strategy for reprogramming gas selectivity rather than simple response enhancement by constructing Co₃O₄@ZIF-8 core–shell nanorod arrays. The ZIF-8 layer was deposited on Co₃O₄ nanorods through a seed-assisted conversion route to regulate gas transport and interfacial adsorption. Compared with pristine Co₃O₄ sensor, ZIF-8 functionalization induced a distinct selectivity shift from acetone-preferred to ethanol-preferred sensing (8.7 toward 100 ppm ethanol at 225 °C) and improved humidity tolerance due to the hydrophobicity of ZIF-8. Density functional theory (DFT) calculations revealed stronger ethanol adsorption on ZIF-8 than acetone adsorption, supporting preferential ethanol enrichment within the ZIF-8 shell. This work establishes ZIF-8 functionalization as an effective route for engineering ethanol selectivity in Co₃O₄ sensors and provides insight into MOF-assisted selectivity reprogramming in MOS chemiresistive gas sensors. Download: Download high-res image (187KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Mengge Wang,Qiuyue Wang,Yulong Li,Zhebin Shen,Qianxi Zhang,Xinyue Deng,Ze-Xian Low,Zhaoxiang Zhong,Weihong Xing
Developed an electro-assisted diffusion strategy for ZIF-8 membrane fabrication. • Electric-field-guided growth enabled defect-free and thickness-controlled ZIF-8 layers. • Secondary crystallization improved membrane integrity and lithium-ion selectivity. • ZIF-EaD membranes achieved selective Li + separation from Co 2+ and Ni 2+ ions. The rapid proliferation of lithium-ion batteries has led to a growing accumulation of end-of-life battery waste, posing serious environmental risks while intensifying demand for the recovery of critical materials such as lithium. This study proposes an electro-assisted diffusion (EaD) method for fabricating defect-free ZIF-8 (ZIF-EaD) membranes on a nylon substrate for lithium extraction from spent battery leachate. Guided by an applied electric field, the method promotes directed migration and collision of metal ions with organic ligands, resulting in a dense separation membrane with controllable thickness. The ZIF-EaD membranes fabricated under an electric field of 1.5 V exhibited a Li + flux of 1.59 × 10 −6 mmol cm −2 s −1 , with separation factors of 5.13 and 3.69 for Li + /Co 2+ and Li + /Ni 2+ , respectively. These results demonstrate an efficient and controllable strategy for preparing lithium-ion-selective membranes, offering a new technical pathway for the development of high-performance ion-selective separation membranes.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Yichun Zhang,Tianqi Wei,Xin Zhong,Zhiguang Guo
In recent years, water pollution caused by oily wastewater discharged from industrial production has become increasingly serious. There was an urgent need for a simple, efficient, and environmentally friendly method to treat oily wastewater, so as to reduce and solve the water pollution problem. In this study, a layer of cellulose hydrogel was coated on stainless steel mesh (SSM) by a dipping coating method, and nanozeolitic imidazolate framework-8 (ZIF-8) particles were grown in situ using the hydrogel as the matrix. The surface roughness of cellulose@ZIF-8@SSM was improved, and its hydration ability was enhanced. The prepared superhydrophilic-underwater superoleophobic cellulose@ZIF-8@SSM can separate different oil/water mixtures under gravity and has long-term separation ability. What is more, the oil–water separation efficiency was more than 99.997%. In addition, cellulose@ZIF-8@SSM showed good chemical and mechanical stability in acid and alkali solution immersion and sand impact tests. This work has broad application prospects and potential in the field of treating oily wastewater.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Yilin Gao,Jun Yan,Yuan Gao,Yitong Chen,Hong Li,Yongping Liao
Enhancing the hydrophilicity of polyphenylene sulfide (PPS) woven fabrics to expand their application in alkaline electrolysis has become a significant research focus. In this research, hydrophilic hPPS@ZIF-8 membranes were fabricated through in-situ growth method. By optimizing the growth time, the optimal conditions for the in-situ growth of ZIF-8 crystal particles on the fabric surface are determined. The in-situ growth of ZIF-8 crystals on the PPS fabric surface introduce hydrophilic groups, while their unique pore structures facilitate ion transport, thereby enhancing the electrochemical performance of the modified membrane. The findings indicate that when the in-situ growth time of ZIF-8 crystal particles is set at 12 h, the resultant hPPS@ZIF-8 membranes exhibit enhanced hydrophilicity, minimal surface resistance (0.231 Ω cm 2 ) and bubble pressure (6007 Pa). Moreover, at ambient temperature, the current density of the hPPS@ZIF-8 membrane is observed to be approximately 307 % higher than untreated PPS fabric under equivalent voltage conditions. After immersion in a 30 wt% KOH solution for 12 h, the change in the water contact angle was merely 3.5 %, and the maximum current density remained essentially unchanged. Therefore, the hydrophilic hPPS@ZIF-8 membranes have a wide application prospect in alkaline water electrolysis.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Jingfang Zhou,Rukang Li
A proton-rich POM-type molybdenum phosphate K12Mo8O20(HPO4)8(PO4)Cl was successfully obtained. It crystallizes in a noncentrosymmetric tetragonal space group of P–4 (No. 81) with the unit cell parameters of a = 9.6580(4) Å, c = 14.2607(10) Å, and Z = 1. The occurrence and positions of the light element H in the structure are inferred from single-crystal X-ray diffraction and confirmed by DFT calculations. The hydrogen atoms are found to form hydroxyl bonds with O atoms from P(2)O4 and P(3)O4 constituting the [Mo4P4O26H4]4– layers but are only weakly bound to the isolated P(3)O4 group through hydrogen bonds. The title compound presents a POM-type framework of corrugated [Mo4P4O26H4]4– layers with four K+ ions and mixed ions (K4Cl3+ and isolated PO43–) orderly imbedding in the interlayer spaces with distances of 5.0396 (1) and 5.5966 (3) Å, respectively. The proton-rich nature and the structure feature were further verified by a series of experiments including 1H, 7Li, and 31P MAS NMR spectra, IR spectroscopy, and thermal analysis. Moreover, the weak bonding and large interlayer spaces make K+ and H+ ions susceptible to exchange with ions of Cs+, Ba2+, Zn2+, Pb2+, Cu2+, and Ni2+ commonly presented in chemical pollutants or nuclear wastes. In addition, the title compound shows a small second-harmonic generation signal, consistent with its noncentrosymmetric structure.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Materials Today Advances
·
2026
·
IF 8
Youbin Li,Xin Li,Tengyue Liu,Chengzhe Yang,Qiang Gao,Lanfeng Huang
The failure of titanium implants in osteoporotic patients is frequently attributed to a disrupted microenvironment characterized by excessive oxidative stress and an imbalance between bone formation and resorption. To address this, we engineered a functionalized composite scaffold (Ti/Gel/ZM) by incorporating melatonin-loaded zeolitic imidazolate framework-8 (ZIF-8) nanoparticles into a gelatin methacryloyl (GelMA) hydrogel on a 3D-printed titanium alloy scaffold. This scaffold was designed to provide a pH-responsive release of zinc ions and melatonin, triggered by the acidic osteoporotic microenvironment. In vitro assays demonstrated that the scaffold effectively scavenged reactive oxygen species (ROS), thereby restoring mitochondrial membrane potential and rescuing the osteogenic differentiation capacity of bone marrow mesenchymal stem cells (BMSCs) via the upregulation of Runx2, ALP, BMP2 and COL1. Simultaneously, the composite scaffold significantly inhibited RANKL-induced osteoclastogenesis in RAW264.7 cells. In vivo evaluation in an ovariectomized rat model confirmed that the Ti/Gel/ZM scaffold promoted rapid osseointegration and trabecular bone regeneration, as evidenced by enhanced bone volume fraction (BV/TV) and trabecular thickness. These results suggest that the Ti/Gel/ZM composite scaffold is a promising candidate for improving the osseointegration of titanium alloy implants in osteoporotic bone.
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2021
·Vol. 15
·期 1
·653-658
·
IF 8.897
Sun Shijie,Guan Yurou,Hao Zhenliang,Ruan Zilin,Zhang Hui,Lu Jianchen,Gao Lei,Zuo Xiaoqing,Cai Jinming
Graphene nanoribbons (GNRs) not only share many superlative properties of graphene but also display an exceptional degree of tunability of their electronic properties. The bandgaps of GNRs depend greatly on their widths, edges, etc. Herein, we report the synthesis path and the physical properties of atomic accuracy staggered narrow N = 8 armchair graphene nanoribbons (sn-8AGNR) with alternating “Bite” defects on the opposite side. The intermediate structures in the surface physicochemical reactions from the precursors to the sn-8AGNR are characterized by scanning tunneling microscopy. The electronic properties of the sn-8AGNR are characterized by scanning tunneling spectroscopies and d//d V mappings. Compared with the perfect N = 8 armchair graphene nanoribbons (8AGNR), the sn-8AGNR has a larger bandgap, indicating that the “Bite” edges can effectively regulate the electronic structures of GNRs.
研究领域:
纳米材料
·
凝聚态物理
·
表面科学
·
电子结构工程
✓ 已验证
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2026
·
IF 3.3
Haiyan Yu,Li Zhang,Kenan Sun,Yongpeng Jia
Coordination polymers with reliable fluorescent sensing performance are of considerable interest for the development of luminescent functional materials. In this work, two transition-metal coordination polymers, CP1 and CP2, were constructed using two different multicarboxylate organic ligands in combination with Ni(II) and Cu(II) ions, respectively. Single-crystal X-ray diffraction analyses reveal that both compounds adopt two-dimensional layered architectures but differ significantly in metal coordination environments and secondary building units, leading to distinct structure–property relationships. Benefiting from their good stability and strong blue luminescence in aqueous media, CP1 and CP2 were explored as fluorescent probes for the detection of 8-nitroguanine (8-NG), a biomarker associated with oxidative and nitrative stress. Both materials exhibit efficient fluorescence quenching responses toward 8-NG, with Stern–Volmer quenching constants of 8.84 × 10 4 M −1 for CP1 and 1.08 × 10 5 M −1 for CP2, along with good selectivity, rapid response, and excellent recyclability. These results demonstrate the potential of these coordination polymers for fluorescence sensing of 8-NG in aqueous systems and provide useful insights into the structure-directed design of coordination-polymer-based fluorescent sensors.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）