SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zhongming Zhang,Enfang Gou,Zhiying Zhao,Rui Wu,Rui Fang,Weipeng Guo,Jie Yao
Organophilic pervaporation (PV) mixed matrix membranes (MMMs) have enormous potential for organic wastewater treatment due to their environmental friendliness and high efficiency. However, developing a high-flux PV membrane remains challenging. In this work, the nanocage-like hollow ZIF-71(h) (HZIF-71(h)) polyhedral nanocrystals were synthesized by heteroepitaxial growth of a ZIF-71(h) shell and successive excavation of a ZIF-67 core. The resultant HZIF-71(h) nanocrystals were blended with poly (ether block amide) (PEBA) matrix to fabricate MMMs for phenol/water separation. Results from several characterization techniques confirmed the successful preparation and formation mechanism of HZIF-71(h). Further, a series of experiments were conducted using the composite membranes to explore the impact of filler type, filler loading, operating temperature, and feed concentration on the separation performance. The incorporation of ZIFs facilitated phenol permeation while limited water transport, thereby resulting in increased separation factor. Notably, the HZIF-71(h)/PEBA-21 MMM exhibits a higher phenol flux in comparison to ZIF-71/PEBA-21 and ZIF-67/PEBA-21 MMMs, indicating the importance of the low-resistance hollow structure. The HZIF-71(h)/PEBA-21 MMM exhibits outstanding pervaporation performance with a separation factor of 15.86 and a phenol flux of 17.32 g·m −2 ·h −1 , respectively, displaying an improvement of 41.2 % and 6.4 % compared to the PEBA/PVDF membrane. Furthermore, this composite membrane demonstrated outstanding durability during continuous testing for 84 h, implying a promising potential for phenol separation.
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高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Yanjia Guo,Juan Lu,Jing Wang,Yujia Song,Ruidan Li,Li Tian
PM6 is a polymer donor characterized by a wide bandgap, commonly utilized in high-performance polymer solar cells. In this study, we applied PM6 to the field of electrochemiluminescence for the first time. By sequentially modifying PM6, CS@luminol and ZIF-8 on the electrode, we constructed a simple yet novel electrochemiluminescence (ECL) sensor for the detection of the colorant sunset yellow (SY). As a donor, PM6 enhanced the charge transfer rate within the system and improved its luminescence performance. CS served to stabilize the luminescent reagent due to its viscosity. ZIF-8 acted as an accelerator in the luminol luminescence system, facilitating the absorption of more active oxygen and generating additional reactive species on the electrode surface. The combined action of PM6 and ZIF-8 resulted in a luminol ECL sensor that exhibited a sensitive and stable signal. When exposed to sunset yellow, the ECL signal diminished consistently with increasing concentrations of SY. Under optimal conditions, the ECL attenuation signal demonstrated a linear relationship with the logarithm of SY concentration, with a linear range of 5.0 × 10 − 13 –5.0 × 10 − 8 mol L -1 , and a detection limit of 1.67 × 10 −13 mol L -1 (S/N = 3). The constructed sensor exhibited excellent stability, selectivity, and repeatability, making it suitable for the actual detection of sunset yellow in sports drinks.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Haonan Zhang,Huaibao Tang,Ling Fang,Yunchuan Luo,Jie Zhou,Leilei Shu,Olim Ruzimuradov,Shavkat Mamatkulov,Butanov Khakimjan Turamuradovich,Kamoladdin Saidov,Dae Joon Kang,Wen He,Peihong Wang
The advanced flexible wearable self-charging power system (SCPS) offers exciting development prospects for flexible electronics, medical sensing, and environmental monitoring. However, constructing a SCPS with fast charging rate still remains a significant challenge. Therefore, in this study, a flexible SCPS featuring rapid charging rate has been designed. Micro-supercapacitors (MSCs) with a synaptic structure were fabricated via electrospinning technique followed with laser engraving, employing polyethylene glycol diacrylate/sulfuric acid gel and ZIF-8@MXene/carbon nanofibers as the polymer gel electrolyte and electrodes, respectively. The specific capacitance of the synaptic-structured MSCs was measured to be 25.5 F g −1 . The power management circuit (PMC) converts the AC output generated by the Ecoflex/BTO triboelectric nanogenerator (TENG) into a stable DC output through periodic conduction, thus greatly reducing the impedance gap between TENG and MSCs, enabling SCPS to efficiently collect high-entropy energy from the environment. The average charging rate could of SCPS reach as high as 26 mV s −1 , which is 14.5 times higher than that achieved with a rectifier, and significantly higher than that reported in the literature. The as-prepared SCPS could provide important support for green energy and sustainable development.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Peiyuan Zhu,Junxian Yang,Fangfei Sun,Kun Wang,Hui Li,Lincai Peng
The widespread environmental issues caused by plastic packaging have driven the search for sustainable alternatives. In this study, we report a facile and scalable layer-by-layer (LBL) spraying strategy to fabricate superhydrophobic paper-based packaging materials with integrated photothermal and photodynamic antibacterial activities. Cellulose paper was modified through the alternate deposition of collagen (COL) and polydopamine-hybridized ZIF-8 (PDA@ZIF-8) nanoparticles to construct hierarchical micro/nano structures, followed by polydimethylsiloxane (PDMS) treatment. The resulting superhydrophobic paper demonstrated remarkable water repellency, self-cleaning and antibacterial adhesion performance. In contrast to original paper, this functional paper also exhibited enhanced mechanical properties and gas barrier. Under 808 nm near-infrared (NIR) irradiation, it generated localized heat and reactive oxygen species (ROS), achieving up to 100 % inhibition against Staphylococcus aureus and Escherichia coli . Moreover, the modified paper demonstrated good biocompatibility and biodegradability, meeting food safety requirements while addressing environmental sustainability. Preservation packaging tests revealed that this functional paper, when combined with NIR irradiation, effectively preserved the quality and freshness of blueberries for 8 days during ambient storage. This work presents a promising strategy for the development of multifunctional and biodegradable paper-based packaging materials, showing great potential for green and active food packaging applications.
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高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Le-Yan Feng,Zhenhua Tang,Nuan Xu,Jiaxin Huang,Yan-Ping Jiang,Xin-Gui Tang,You Zeng,Shang-Xian Chen
Antibiotics play an essential function in treating various diseases. However, their overuse has led to water pollution and food safety issues. This work discusses a highly sensitive ratiometric fluorescent flexible sensor based on multifunctional 4-MU@ZIF-8@PLA-PEG composite film prepared using a low-toxicity, eco-friendly and self-assembly method. The sensor combines the luminescent properties and structural tunability of ZIF-based composites with the processability and flexibility of polymers. The 4-MU@ZIF-8@PLA-PEG sensor can detect tetracycline (TC), oxytetracycline (OTC), chlortetracycline hydrochloride (CTC⋅HCl), and doxycycline hydrochloride (DOX⋅HCl) with dual-emission ratiometric fluorescence, exhibiting a visible color change from blue to yellow, with detection limits of 0.058 nM, 16.806 nM, 2.113 nM and 20.510 nM, respectively. The fluorescence characteristics exhibit excellent linear relationships with TC detection in tap water and milk, and show inhibition rates of 87.27 % and 76.61 % against E. coli and S. aureus . With its antibacterial activity, visual detection, high sensitivity, and short detection time, this sensor has significant potential for detecting antibiotics in aquatic environments and food safety applications.
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高影响因子
ACS Applied Engineering Materials
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2025
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IF 3.5
Yihan Zhang,Yiliyasi Baikeli,Zehong Gao,Longyi Chen
Development of polysaccharide biomass for efficient electrocatalytic sensing applications is important for its natural resource utilization and detection application. Elaeagnus angustifolia L. gum is chosen as an electron-rich macromolecule of polysaccharide as the encapsulating agent to surround etched parted ZIF-67(Co) particles. The three electron-rich molecules trithiocyanuric acid, urea, and sodium hypophosphite are selected as the weak acid etching agents, which could etch ZIF-67(Co) microcubes. This fragmentation of ZIF-67(Co) is attributed to the electron-rich molecules disrupting the internal coordination bonds of ZIF-67(Co), thus producing fragmented particles with increased exposed active electrocatalytic spots. Further carbonization of the mixture is processed to obtain the electrocatalyst ZIF-67(Co)-NPS-doped biomass carbon (ZNBC). The ZNBC/GCE sensor shows a significant improvement in electrochemical performance with a linear range of 0.5 to 100 μM, a sensitivity of 10.04 μA μM–1 cm–2, a limit of detection of 0.052 μM, and good selectivity. The ZNBC/GCE sensor was also used in rapid and accurate electrochemical sensing of APAP in urine, lake water, and pharmaceutical capsule preparation samples with good recoveries. This electron-rich macromolecule/molecule as an encapsulating/etching combo strategy provides insight into the usage of Elaeagnus angustifolia L. gum and top-down design of metal–organic frameworks (MOFs) for potential applications in electrocatalyst design.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Junying Wu,Ruijie Guo,Houting Kang,Yanming Wang,Jingyuan Tian,Jierong Wang,Hong Yan
Metal–organic frameworks (MOFs) have great potential in improving the fire safety of polymer materials. To improve the fire resistance and smoke suppression of polypropylene (PP), a flame-retardant system ZIF-67@γ-CD-MOFs@APP incorporating multiple flame-retardant elements was designed and applied to PP. The coated PP passed UL-94 V-0 level with the LOI up to 36.2% and char residue of 12.47%. The PHRR, PSPR, COP, and CO 2 P of coated PP were reduced by 52.65%, 24.72%, 36.49%, and 52.29%, respectively, compared to neat PP. In addition, the tPHRR, tPSPR, tCOP, and tCO 2 P were prolonged by 405.3%, 345.4%, 427.8%, and 405.3% compared to pure PP, allowing more escape time when facing a real fire. Integrating the hierarchical porous structure provided by ZIF-67 and γ-CD-MOFs, catalytic carbonization of transition metal Co and the nitrogen-containing ligand, ZIF-67@γ-CD-MOFs@APP played a flame-retardant role both in the condensed and gas phase, endowing PP with enhanced flame retardancy and smoke suppression. The “all-in-one” strategy provides helpful insights for constructing fire retardant system with multi-level nanostructure.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yeqiang Lu,Yawen Zhao,Yuexiu Li,Zhihao Li,Congjie Gao,Lei Qin,Zhishan Chen,Lixin Xue
Superwetting membrane have gained significant attention as a highly effective solution for oily wastewater treatment. However, its effectiveness was restricted when separating different types of oil-in-water (O/W) and water-in-oil (W/O) emulsions due to the limited single wettability of the membrane surfaces. Developing superwetting membranes with broad applicability and high separation efficiency is crucial for the continued advancement of membrane separation technology. In this study, a hydrophilic polymer, poly 2-hydroxybutyl methacrylate (PHBMA) was introduced into the polyacrylonitrile (PAN) substrate, and zeolitic imidazolate framework-90 (ZIF-90) particles were synchronously grown and in-situ immobilized on the membrane surface in process of phase inversion, forming a ZIF-90@P-PAN membrane with switchable superwettability. With increasing ZIF-90 growth time, the membrane surface first became rougher due to crystal formation, then gradually denser as particle accumulation increased. This membrane exhibited super-amphiphilicity in air and super-amphiphobicity under liquid, demonstrating high permeation flux and excellent separation efficiency (>99 %) for different types of emulsions. The effects of ZIF-90 particles with different growth times on the membrane morphology, wettability and oil–water separation performance were systematically studied. Additionally, the removal efficiency (>80 %) and recycling performance of the ZIF-90@P-PAN membrane for four different heavy metal ions were investigated. This work contributed to the development of superwetting membranes for efficient recovery of oily wastewater.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yuling Yang,Xiaoli Zeng,Zhixiang Zeng,Linghui Wang,Ping Zhu,Lei Tang,Lijing Zhu
Porous membranes have been fabricated and modified for the separation and purification of wastewater. Although they always suffer from fouling caused by various materials such as oils, dyes, and antibiotics. It is difficult to deal with the boring membrane fouling by one antifouling strategy including hydrophilicity/underwater superoleophobicity. In this work, a synergistic antifouling mechanism combining low oil adhesive underwater superoleophobicity and excellent persulfate advanced oxidation processes (PS-AOPs) performances was developed by facilely loading ZIF-67 catalysts on polypropylene (PP) membranes. The as-prepared composite membranes have stable underwater superoleophobicity and low oil adhesion, which can efficiently separate oil from oil-in-water emulsion and prevent oil adhesion. Moreover, the ZIF-67 catalysts on the composite membranes have excellent degradation performances against various foulants such as methylene blue (MB), tetracycline (TC), and levofloxacin (LVFX), which endow the composite membrane with enhanced antifouling properties during the separation of an oil-in-water emulsion containing MB, TC, and LVFX. The synergistic antifouling mechanism of low oil adhesive underwater superoleophobicity and advanced PS-AOPs provides a facile and efficient strategy for improving the antifouling of the porous membranes in real wastewater purification.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Tian Lei,Jin Liang,YaXi Zhang,Guang Yang,Li Zhang
To stay current with energy development, designing efficient bifunctional electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media is urgent. Herein, cerium is incorporated into ZIF-derived sulfides to create (Ce)NiCo–S/NF, a composite material with a nanogrid-like hierarchical structure. Importantly, it required a low overpotential of 136 mV at 10 mA cm −2 for the HER. For the OER, it achieved current densities of 10 and 50 mA cm −2 at low overpotentials of 209 and 245 mV, respectively. Creating a nanogrid-like hierarchical microstructure with a core-shell structure and modulation of the electronic environment through cerium doping is believed to be responsible for the improved electrocatalytic efficiency. In addition, overall water splitting demanded a low cell voltage of 1.57 V to achieve a current density of 10 mA cm −2 . This research outlines a feasible framework for an efficient material for global clean energy applications.
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高影响因子
Energy Storage Materials
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2023
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IF 20.4
Dongmei Zhang,Ruonan Yang,Jianhua Zhou,Wenping Liu,Haiqing Qin,Zhenjun Zhang,Xiaoxu Lei,Anjun Lu,Zuxue Mo,Lei Miao,Feng Dang
The zeolitic imidazolate framework (ZIF) is characterized by a highly ordered structure, large cavities, and thermal/chemical stabilities and has been widely researched for energy storage. In this study, using commercial Si powder with a diameter of 50–200 nm at a kilogram scale, Si@ZIF core-shell particles with dispersed ZIF-8 rhombic dodecahedrons were fabricated by a one-pot method and achieved excellent electrochemical performance. With the specific pore diameter and ordered network formed by membered rings, experimental results demonstrated that the ZIF-8 shell realized a uniform and accelerated Li + diffusion route, alleviated volumetric expansion of the Si core, and constructed a LiF-concentrated robust solid electrolyte interface film with less unnecessary consumption of electrolyte and Li + . Density functional theory calculations verified the higher adsorption energy for Li-solvated clusters and the de-solvation effect on the surface of ZIF-8, which can increase Li + concentration along the one-dimensional channels of 4-membered ring with a diameter similar to that of Li + for high-speed and uniform Li + intercalation. Furthermore, the large and elastic rhombic dodecahedrons formed by pure ZIF-8 buffered the volume change and maintained the integrity of the Si electrode during cycling. As a result, the Si@8Z anode achieved a reversible capacity of 818.5 mAh g −1 after 650 cycles at 1 A g −1 with a high initial coulombic efficiency of 88.2 % and outstanding rater performance even at 8 A g −1 . Nevertheless, the capacity of the Si anode decreased to 0 mAh g −1 after 200 cycles. The present work clarifies the effect of ZIF on the performance of Si anodes and provides a simple method to modify commercial Si powder.
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高影响因子
Carbon Energy
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2024
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IF 19.5
Hongyu Gong,Guanliang Sun,Wenhua Shi,Dongwei Li,Xiangjun Zheng,Huan Shi,Xiu Liang,Ruizhi Yang,Changzhou Yuan
Enhancing both the number of active sites available and the intrinsic activity of Co-based electrocatalysts simultaneously is a desirable goal. Herein, a ZIF-67-derived hierarchical porous cobalt sulfide decorated by Au nanoparticles (NPs) (denoted as HP-Au@Co x S y @ZIF-67) hybrid is synthesized by low-temperature sulfuration treatment. The well-defined macroporous–mesoporous–microporous structure is obtained based on the combination of polystyrene spheres, as-formed Co x S y nanosheets, and ZIF-67 frameworks. This novel three-dimensional hierarchical structure significantly enlarges the three-phase interfaces, accelerating the mass transfer and exposing the active centers for oxygen evolution reaction. The electronic structure of Co is modulated by Au through charge transfer, and a series of experiments, together with theoretical analysis, is performed to ascertain the electronic modulation of Co by Au. Meanwhile, HP-Au@Co x S y @ZIF-67 catalysts with different amounts of Au were synthesized, wherein Au and NaBH 4 reductant result in an interesting “competition effect” to regulate the relative ratio of Co 2+ /Co 3+ , and moderate Au assists the electrochemical performance to reach the highest value. Consequently, the optimized HP-Au@Co x S y @ZIF-67 exhibits a low overpotential of 340 mV at 10 mA cm –2 and a Tafel slope of 42 mV dec –1 for OER in 0.1 M aqueous KOH, enabling efficient water splitting and Zn–air battery performance. The work here highlights the pivotal roles of both microstructural and electronic modulation in enhancing electrocatalytic activity and presents a feasible strategy for designing and optimizing advanced electrocatalysts.
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高影响因子
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