JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Yongli Du,Yongfan Cao,Zhenzhu Cao,Liying Wang,Guorong Li
Composite solid-state electrolytes (CSEs) with high safety and flexibility are promising candidates for high-energy-density energy storage devices. However, the low ionic conductivity, low ion transference number, and poor interfacial stability of CSEs greatly reduce the electrochemical performance of lithium-ion batteries (LIBs). In this work, ZIFs with low, medium and high entropy prepared using mechanical ball grinding are introduced into polyvinylidene fluoride (PVDF) as fillers. The effect of ZIFs with different entropy on the structure, ionic conductivity of CSEs as well as electrochemical performance of cells is investigated. The CSE with high-entropy ZIF (PLL-HE) showcases optimal comprehensive properties, with mechanical strength as high as 11.2 MPa, high room-temperature ionic conductivity of 7.76 × 10 −4 S cm −1 , high ionic transference number of 0.84, and low activation energy of 0.14 eV. The Li/PLL-HE/Li symmetric cell does not experience short-circuit phenomena after cycling for 1400 h at a current density of 0.2 mA cm −2 . The LiFePO 4 /PLL-HE/Li full cell has an initial discharge specific capacity of 152.3 mA h g −1 at a rate of 0.2 C and exhibits a capacity retention rate of 99.44 % after 130 cycles. This study provides a novel strategy using high-entropy ZIF to boost CSE performance for Li-metal cells.
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Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120759
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IF 7.2
Tiandi Pan,Zhibo Huang,Xinghua Su,Ning Tang,Fei Sun,Peijian Du,Youna Liu,Xiaofei Liu
Nanofiber membranes are widely employed for oil/water separation applications. However, these membranes suffer from low rejection rate due to their large pore size failing to capture fine water droplets, compounded by serious membrane fouling from surfactant adsorption in separating emulsified oil. To address these limitations, we presented a hierarchical zeolitic imidazolate frame-work-8@polyvinylidene fluoride nanofiber membranes (ZIF-8@PVDF NFMs) via sequential electrospinning and solvothermal synthesis. The hierarchical structure comprises a separation layer of ZIF-8@PVDF nanofibers and a support layer of PVDF nanofibers. The introduced ZIF-8 nanoparticles on the separation layer not only create micro/nano rough surface, thereby endowing the membrane with superhydrophobicity and underoil superhydrophobicity, but also reduce pore size to improve separation accuracy. Meanwhile, the underlying large-pore PVDF layer ensures rapid oil permeation. Consequently, this hierarchical design achieves outstanding removal efficiency (99.1 %) and high flux (3296.2 L m⁻² h⁻¹) for water-in-n-hexane emulsion under the driving pressure of 20 kPa. Notably, the membrane exhibited robust recyclability with separation efficiency remaining 98.8 % after 10 cycles. The hierarchical nanofiber membrane is a promising candidate for efficient separation of water-in-oil emulsions.
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Small
·
2025
·
IF 12.1
Haoyi Wang,Le Xu,Chunying Si,Yankai Zhang,Yunbiao Qi,Quanxing Zhang,Wei Jiang
Mixed polyester wastes with different chemical structures remain a key obstacle to achieving circularity in plastic utilization. Here, a programmable one-pot photothermal strategy is reported using a catalyst derived from a bimetallic MOF (Zn/Co-ZIF-C) through pyrolysis of a Zn/Co-integrated precursor. This system enables the efficient and sequential depolymerization of polycarbonate (PC), polylactic acid (PLA), and polyethylene terephthalate (PET) in mixed streams by simply tuning the irradiation intensity. Selective glycolysis of PC, PLA, and PET is triggered at ≈420, 520, and 650 mW cm −2 , respectively, enabling stepwise monomer recovery in a single reactor. Density functional theory calculations reveal a dual-site cooperative mechanism, in which ZnO and Co-N x sites cooperatively activate ester bonds and ethylene glycol, offering a mechanistic basis for the observed substrate-specific reactivity. The Zn/Co-ZIF-C catalyst exhibits broadband light absorption, strong catalytic activity, and excellent recyclability, maintaining over 95% PET conversion across five cycles. Moreover, it achieves monomer yields above 80% from nine real-world post-consumer plastics, while simultaneously removing dyes and performing magnetic separation. This work presents a robust and scalable catalytic platform for light-controlled, selective upcycling of complex polyester mixtures, offering new opportunities for sustainable plastic circularity.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
·
IF 8.4
Yiming Liu,Weixuan Pan,Hui Zhang,Ningxin Geng,Liangxu Jiang,Jiaan Bao,Huiwen Wu,Qi Liu
In this study, a composite aerogel was synthesized through the in situ integration of ZIF-8 within a sodium alginate (SA) framework, followed by cross-linking and freeze-drying. SA@ZIF-8 demonstrated enhanced adsorption capacity and reusability. The introduction of ZIF-8 improved the aerogel’s surface properties and generated abundant porous adsorption sites. At 298 K, the composite exhibited a maximum theoretical adsorption capacity of 200.4 mg g −1 for tetracycline (TC). The adsorption process of SA@ZIF-8 for tetracycline followed the pseudo-second-order kinetic model and the Langmuir isotherm model. The adsorption mechanisms include synergistic effects, hydrogen bonding, coordination bonding, electrostatic attractions, and π–π interactions. In addition, following ten adsorption-desorption cycles, the material consistently demonstrated a removal efficiency surpassing 65.7 %. On the whole, this study demonstrates an efficient biomass adsorbent for the removal of tetracycline from drain water. The prepared composite aerogel exhibits excellent reusability for efficient tetracycline removal from wastewater, demonstrating strong potential for practical water treatment applications.
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Carbon Letters
·
2025
·
IF 5.8
Du Xue,Han Tong,Jin Biao,Meng Long-Yue,Han Lian-Hua
Contamination of food with heavy metal ions and nitrites poses a serious threat to human health. Consequently, the development of fast and sensitive platforms for detecting these contaminants is urgently required. In this paper, a novel MnMgFe-LDHs/DC sensor is constructed based on a simple strategy, in which MnMgFe layered double hydroxide (LDHs) is used as a metal precursor, and a unique "island bridge" carbon network structure is generated by its pyrolysis with ZIF-8@B, N-WMCNTs. The electrical conductivity was enhanced, and a large electroactive surface area was provided for the MnMgFe-LDHs/DC. The electrochemical properties of Pb 2+ , Cd 2+ and nitrite were investigated using this electrode as a working electrode. Under optimized conditions, the sensing platform exhibited a wide linear range with the Pb 2+ , Cd 2+ , and NO 2 − limits of detection of 46.16 nM, 59.25 nM, and 0.083 μM, respectively. Of particular note is that this sensing platform exhibits outstanding anti-interference capabilities. It can precisely and efficiently conduct the detection of nitrite and heavy metal ions in pickled foods.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Ahmed M. Omer,Eman M. Abd El-Monaem,Heba S. Hassan,Mahmoud A. Elmeligy,Angela Kleinová,Abdelazeem S. Eltaweil,Abolfazl Heydari
pH-sensitive carriers have emerged as an optimal choice for the oral administration of anticancer drugs, exhibiting the desired release performance. This study aims to develop biocomposite beads for the sustained release of the anticancer drug 5-fluorouracil (5-FU). Here, 5-FU was encapsulated within a ZIF-8 metal-organic framework (MOF), which was subsequently impregnated into amino-chitosan beads. The resulting Am-CS@ZIF-8 biocomposite beads were characterized for their chemical structure, surface morphology, elemental composition, crystallinity, surface charges, and mechanical properties utilizing Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), zeta potential analysis, and a texture analyzer, respectively. The developed beads exhibited a textured surface, denser composition, and a positively charged surface with a maximum zeta potential of +12.4 at pH 7.4. In comparison to Am-CS beads, the Am-CS@ZIF-8 biocomposite beads demonstrated superior mechanical properties, achieving a maximum stress value of 5.668 MPa compared to the 1.874 MPa recorded for pure Am-CS beads. pH sensitivity was assessed through the investigation of water uptake behavior at pH 1.2 and pH 7.4. The Am-CS@ZIF-8 biocomposite beads demonstrated a high encapsulation efficiency of approximately 81.6 % for 5-FU. They exhibited pH-responsive release behavior, with only 17 % of the drug released at pH 1.2 after 2 h and a sustained release of 52 % at pH 7.4 over 24 h. The release mechanism was predominantly governed by Fickian diffusion, as closely fitted by the Peppas-Sahlin kinetic model. The formulated carrier confirmed its biodegradability under enzymatic physiological conditions, suggesting its potential applicability as an effective system for the oral delivery of anticancer drugs.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Xiaoqing Cui,Bo Yang,Shen Zhao,Xuewei Li,Meng Qiao,Ran Mao,Yan Wang,Xu Zhao
In this paper, a sensitive and selective electrochemical sensor was constructed for nickel (II) detection by employing the electrode material of zeolitic imidazolate framework-8@dimethylglyoxime/β-cyclodextrin/reduced graphene oxide (ZIF-8@DMG/β-CD/RGO). The material was characterized and analyzed by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Transmission electron microscopy (TEM) and Nitrogen adsorption-desorption isotherms in detail. In these composite, ZIF-8 served as the supporting material of DMG which was the selective complexing agent to Ni (II), RGO employed conductivity while β-CD prevented the aggregation of RGO sheets. With these features, the sensor showed a wide linear range of 0.01–1.0 μM and a low detection limit of 0.005 μM (S/N = 3). Interferences of diethanol, citric acid , humic acid, Triton X-100 and some common metal ions can be ignored to some extent. Finally, the sensor was applied to Ni (II) detection in real water sample.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2015
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IF 3.091
Yaqiong Zhu,Qian Liu,Jürgen Caro,Aisheng Huang
Highly hydrogen-permselective zeolitic imidazolate framework ZIF-8 membranes are prepared on coarse and macroporous Al 2 O 3 tubes through a repeated synthesis strategy for the separation of H 2 /CO 2, H 2 /CH 4 , and H 2 /C 3 H 8 mixtures. Since the amino-groups of 3-aminopropyltriethoxysilane (APTES) can coordinate to the free Zn 2+ centers and thus bind the growing nano-crystals directly, the nucleation and growth of well intergrown ZIF-8 membranes could be promoted through a repeated synthesis of the ZIF-8 layer on APTES-modified macroporous Al 2 O 3 tubes. The SEM and XRD characterizations indicate that a dense and phase-pure ZIF-8 membrane with a thickness of about 25.0 μm can be formed on the alumina tubes by microwave synthesis at 105 °C for 3 h, and no cracks, pinholes or other defects were observed in the membrane layer. The ZIF-8 membranes were evaluated in single gas permeation and mixed gas separation. Attributed to the preferential adsorption affinity and capacity as well as a highly porous structure with nano-sized channels, the ZIF-8 membrane displays a high hydrogen permselectivity. For the separation of equimolar H 2 /CO 2 , H 2 /CH 4 , H 2 /C 3 H 8 mixtures at 100 °C and 2 bar, the mixture separation factors of H 2 /CO 2 , H 2 /CH 4 , and H 2 /C 3 H 8 are 5.6, 44.0, 328.6, with a H 2 permeance of about 1.1 × 10 −7 mol m −2 s −1 Pa −1 , which is promising for potential applications in hydrogen purification and separation.
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Desalination and Water Treatment
·
2024
·
IF 1
Dapeng Zhang,Zicheng Yao,Han Zhang,Guiru Zhu,Lu Liu,Congjie Gao
A novel strategy to fabricate thin film nanocomposite (TFN) membrane was reported by dispersing nanofillers in the aqueous and organic phase simultaneously via interfacial polymerization of m-phenylenediamine and trimesoyl chloride. Two different nanofillers (hydrophilic MCM-48 and hydrophobic ZIF-8) were used to investigate the new strategy. Both hydrophilic MCM-48 and hydrophobic ZIF-8 can effectively improve the separation performance of the TFN membrane with higher water flux value maintaining high salt rejection via the novel strategy than conventional TFN membrane prepared with same total amount nanoparticles in singly organic phase or aqueous phase. It indicates that the new strategy is feasible to obtain the TFN membrane with excellence separation performance compared with the conventional method by dispersing nanofillers in singly phase. The new strategy is realized by dispersing less amount nanofillers in both phases simultaneously, which is possible to avoid the aggregation of nanoparticles and maximize the effect of nanoparticles.
研究领域:
材料科学
·
膜分离技术
·
纳米复合材料
·
环境工程
·
化学工程
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yanfang Li,Lifang Wang,Tanlai Yu,Guangming Wen,Xiuzhi Tang,Weichun Chang,Qifeng Li,Junwei Wang
A series of porous Co-doped porous carbon absorbers (SC/CoC) with favorable microwave absorption performance were synthesized originating from a coal hydrogasification semicoke (SC)/Zeolitic Imidazolate Framework (ZIF-67) precursor by a facile static reaction and subsequent pyrolysis approach. SC acts as an external carbon source to avoid structural instability and poor impedance matching characteristics inherent in ZIF-67. The influence of annealing temperature on the microstructure, graphitization degree, electromagnetic parameters, and the microwave absorption (MA) capabilities of SC/CoC composites was systematically investigated. The results demonstrated that the annealing temperature critically influenced the MA performance. When the absorber filling ratio is 30 wt %, the SC/CoC-800 composite exhibits the best MA performance with the minimum reflection loss (RLmin) of −40.89 dB at a thickness of 2.0 mm an effective absorption bandwidth of 4.58 GHz at 1.6 mm in thickness compared with its counterparts. The synergistic effects of conductive loss (porous carbon framework), magnetic loss (Co nanoparticles), polarization loss (dipoles and multiple heterointerfaces), and multiple scattering (pores) endowed the composites with favorable MA performances. This work not only proposes a scalable methodology for fabricating high-performance microwave absorbers but also establishes a sustainable approach to utilize industrial byproduct SC as value-added electromagnetic functional materials.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Zhao Meng,Haibo Yang,Yongzhen Ma,Yan Cheng,Yanlong Ma,Binglong Zheng,Hongwei Zhou,Ying Lin
In increasingly complex electromagnetic environments, developing high-performance and dynamically tunable electromagnetic wave (EMW) absorption materials is essential. This study designed a pressure-responsive TiO2/CNFs@Co/C elastic aerogel for efficient EMW absorption. A 3D interpenetrating structure consisting of Ti3C2Tx MXene-derived TiO2 nanosheets, magnetic Co/C frameworks, and carbon nanofibers was constructed via electrospinning combined with in situ synthesis. This 3D interpenetrating structure constructs abundant heterogeneous interfaces, thereby enhancing interfacial polarization. The results demonstrate that the composite achieves an exceptionally broad effective absorption bandwidth (EAB) of 8.17 GHz at a thickness of 2.7 mm, with only 10 wt% filler loading. Additionally, the composite exhibits strong environmental tolerance, including hydrophobicity, stretchability, and thermal insulation. Notably, the alginate-induced elastic aerogels enable dynamic tuning from 6.4 to 18 GHz under compressive strains of 0% to 66%. This work designs dynamically tunable, high-performance EMW absorbers through component optimization and interface engineering, providing a promising strategy for the preparation of next-generation multifunctional intelligent EMW absorbers.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Pei Wu,Yang Jiao,Li Cheng,Cheng Yao,Xiong Chen
A novel near-infrared luminescent fluorescent composite material, TCPP-His@ZIF-8, was successfully constructed. Through an amide condensation reaction, Tetrakis (4-carboxyphenyl) porphyrin (TCPP) was covalently anchored onto the surface of L-histidine (His) -modified ZIF-8 metal-organic framework. This material serves as a highly sensitive near-infrared fluorescence sensing platform. Upon introducing mitoxantrone (MITX) as a fluorescence quencher, the material achieves highly selective and sensitive fluorescence detection of MITX. Mechanistic studies revealed that the fluorescence quenching of TCPP-His@ZIF-8 by MITX involves multiple mechanisms: the shift in absorption peaks confirms the presence of static quenching, while FRET is the primary mechanism responsible for the shortening of fluorescence lifetime, i.e., the dynamic quenching process. The inner filter effect (IFE) contributes partially to the reduction in apparent fluorescence intensity but is not the dominant factor. Under optimal experimental conditions, the sensor exhibits good linearity for MITX detection within the range of 0.125–14.0 μM, with a detection limit as low as 91.93 nM. Anti-interference and selectivity experiments demonstrated that common interferents and antibiotic analogues did not significantly affect detection. Furthermore, spiked recovery experiments in real samples such as tap water, milk, and human serum yielded satisfactory results, validating the reliability and potential of this method for practical applications.
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