JOURNAL OF MEMBRANE SCIENCE
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2024
·
IF 8.4
Wei-Min Liu,Xin-Ru Chen,Heng Mao,Shen-Hui Li,Yan-Mei Zhang,Li-Hao Xu,Zhi-Ping Zhao
Construction of ultra-thin and defect-free separation membrane on inner surface of hollow fiber supports is significant but challenging for molecular separation. In this study, the highly permeable PDMS@ZIF-8/PVDF composite membranes were successfully fabricated upon the inner-surface of polyvinylidene fluoride (PVDF) hollow fiber membrane for pervaporation (PV) ethanol/water separation. The efficient preparation of hierarchical PDMS@ZIF-8/PVDF composite membranes benefited from the precise regulation of ZIF-8 layer through interfacial synthesis and sequential coating of PDMS matrix. The thickness of the PDMS layer was only 16 ± 2 nm, which admirably eliminated the non-selective defects in ZIF-8 layer. Owning to the optimal combination of MOF layer and ultra-thin polymer layer, the as-prepared membrane exhibited the excellent ethanol flux of 1.34 kg m −2 h −1 with an ethanol concentration in permeate of 31.3 wt% for separating 5 wt% ethanol aqueous solution at 40 °C. The separation performance of the resultant membrane was superior to that of the other ethanol selective PV membranes . These findings herein provided a new way for preparing high-performance hollow fiber composite membranes for PV separation.
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高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Zhenqian Ma,Guojing Chen,Yufei Huang,Jing Wei,Chunpeng Chai
Self-healing polyurethane (SPU) has important applications in areas such as protective coatings, medical devices and solid lubrication . However, improving the lubricating properties of self-healing polyurethanes to reduce their friction and wear is still an important challenge. Herein, an amphoteric SPU is prepared and used as the solid lubrication matrix. NH 2 -Ti 3 C 2 -ZIF-8 is grown on NH 2 -Ti 3 C 2 in situ to obtain NH 2 -Ti 3 C 2 -ZIF-8 as lubrication additive. The lubrication performance of NH 2 -Ti 3 C 2 -ZIF-8/SPU composites is the best when the NH 2 -Ti 3 C 2 -ZIF-8 content is 1.00 wt%. The coefficient of friction (COF) is only 0.10, and the wear rate is only 1.315×10 −4 mm 3 /(N·m), which are reduced by 80.4 % and 99.4 % respectively compared with single SPU. By exploring the lubrication mechanism, it is found that NH 2 -Ti 3 C 2 -ZIF-8 participated in producing transfer film during friction, and the excellent lubricity and anti-wear effect of NH 2 -Ti 3 C 2 and the unique adsorption and rolling effect of ZIF-8 jointly improved the friction performance of the samples. In addition, the composite material can realize rapid healing within 5 min at 75 %RH, 20℃, the self-healing efficiency can reach 84.7 %. Therefore, the SPU containing NH 2 -Ti 3 C 2 -ZIF-8 has potential applications in the field of solid lubricated materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Ze Lv,Xiaohan Meng,Qianwei Liang,Tianzhen Jiang,Shaoyang Sun,Yifei Tan,Jianguo Feng
Film mulching is one of the most important methods to control soil-borne diseases. However, the traditional mulch may cause microplastic pollution and soil ecological damage. Herein, a biodegradable film was developed using oxidized starch and carboxymethyl chitosan and incorporated ZIF-8 carrying fludioxonil to sustainably control soil-borne disease. The microstructure, mechanical properties, optical properties, and water barrier properties of the composite films (Flu@ZIF-8-OS/CMCS) were investigated. The results show that Flu@ZIF-8-OS/CMCS had a smooth and uniform surface and excellent light transmittance. The excellent mechanical properties of the films were verified by tensile strength , elongation at break and Young's modulus . Higher contact angle and lower water vapor permeability indicate water retention capacity of the soil was improved through using Flu@ZIF-8-OS/CMCS. Furthermore, the release properties, biological activity, degradability and safety to soil organisms of Flu@ZIF-8-OS/CMCS was determined. The addition of ZIF-8 significantly improved the film's ability to retard the release of Flu, while the Flu@ZIF-8-OS/CMCS has good soil degradability. In vitro antifungal assays and pot experiments demonstrated excellent inhibitory activity against Fusarium oxysporum f. sp. Lycopersici . Flu@ZIF-8-OS/CMCS caused only 13.33 % mortality of earthworms within 7 d. This research provides a new approach to reducing microplastic pollution and effectively managing soil-borne diseases.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Jing Zhang,Yang Xue,Lan Zhang,Jun Chen,Dayan Ma,Yingang Zhang,Yong Han
Bacterial infections seriously retard skin wound healing. To enhance the antibacterial efficiency and subsequent skin regeneration, a core–shell structured therapeutic platform, named FZAM, was designed with multiple antimicrobial pathways. FZAM consists of nanosized Fe3O4 as the core and ZIF-8 loaded with Au nanoparticles (NPs) and maltodextrin as the shell. Fe3O4 and Au NPs form a heterojunction that generates hyperthermia and abundant reactive oxide species (ROS) under near-infrared (NIR) irradiation. This heterojunction also exhibits outstanding peroxidase-like activity. When bacteria invade, maltodextrin plays a targeting effect to increase the interaction between FZAM and bacteria, and with the synergistic action of NIR-induced hyperthermia and ROS as well as Zn2+ from ZIF-8, FZAM kills more than 99% of bacteria at 200 μg mL–1. Fortunately, FZAM is cytocompatible and even promotes the biofunctions of fibroblasts and endothelial cells. In infected skin wound models, FZAM sterilizes bacteria with NIR irradiation and subsequently reduces the inflammatory response and accelerates skin regeneration. This work provides a core–shell structured therapy platform for treating infection with the assistance of NIR irradiation and helping skin wound healing.
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高影响因子
Analytical Methods
·
2024
·Vol. 16
·期 35
·5959-5970
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IF 2.7
Zhang Jingru,Chu Hongtao,Chen Jiaqi,Wang Qian,Qin Shili,Gao Lidi,Ma Wenhui,Li Jun,Zhao Ming,Zhang Weibing
In this study, three different materials were prepared: dendritic fiber-type silica (KCC-1), zeolitic imidazolate framework-8 (ZIF-8), and a new composite material called KCC-1@ZIF-8. These materials were synthesized using microemulsion, stirring, and coating methods, respectively. The properties of the materials were characterized using various techniques such as transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), TGA and X-ray diffraction (XRD). The results showed that KCC-1@ZIF-8 exhibited a significant increase in the BET surface area and pore size compared to the individual components KCC-1 and ZIF-8. These improved properties of the composite material were beneficial for enhancing the adsorption capacity. The effects of initial concentrations, solution pH and reaction time on the adsorption capacity were investigated. The adsorption kinetics and isothermal data of ZIF-8 and KCC-1@ZIF-8 fitted well with pseudo-second-order and Langmuir isotherm models. The results of adsorption thermodynamics show that the adsorption process is spontaneous and endothermic. KCC-1@ZIF-8 exhibited a very high adsorption capacity (751.46 mg g−1) at an initial TC hydrochloride concentration of 80 mg L−1 in an aqueous solution at 301.15 K, and the value was higher than that of ZIF-8 (549.80 mg g−1) under the same conditions. KCC-1 exhibited a relatively lower capacity (37.860 mg g−1). Based on these findings, KCC-1@ZIF-8 was considered a promising adsorbent for the treatment of wastewater contaminated with TC hydrochloride. Additionally, the composite material, when combined with high-performance liquid chromatography (HPLC), could be used as a solid-phase extraction adsorbent for the adsorption of TC hydrochloride in animal foodstuff samples. The calibration curves showed a linear range of 20–500 μg L−1, and the recovery rate ranged from 85.216% to 90.717%. No one has made adsorbents with this new structure before, and KCC-1@ZIF-8 possessed excellent adsorption properties, which make it a potential candidate for environmental remediation and analytical applications involving TC hydrochloride.
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高影响因子
International Journal of Nanomedicine
·
2024
·
IF 6.6
Yutong Zheng,Xiaoyi Cai,Gui Chen,Dexuan Xiang,Wei Shi,Jianliang Shen,Bailin Xiang
Purpose: Recently, Single-atom-loaded carbon-based material is a new environmentally friendly and stable photothermal antibacterial nanomaterial. It is still a great challenge to achieve single-atom loading on carbon materials.Materials and Methods: Herein, We doped single-atom Ag into ZIF-8-derived porous carbon to obtain Ag-doped ZIF-8-derived porous carbon(AgSA-ZDPC). The as-prepared samples were characterized by XRD, XPS, FESEM, EDX, TEM, and HAADF-STEM which confirmed that the single-atom Ag successfully doped into the porous carbon. Further, the photothermal properties and antimicrobial activity of AgSA-ZDPC have been tested.Results: The results showed that the temperature increased by 30 °C after near-infrared light irradiation(1 W/cm2) for 5 min which was better than ZIF-8-derived porous carbon(ZDPC). It also exhibits excellent photothermal stability after the laser was switched on and off 5 times. When the AgSA-ZDPC concentration was greater than 50 μg/mL and the near-infrared irradiation was performed for 5 min, the growth inhibition of S. aureus and E. coli was almost 100%.Conclusion: This work provides a simple method for the preparation of single-atom Ag-doped microporous carbon which has potential antibacterial application.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Meng-Nan Liu,Ting Chen,Fang Yin,Wei Zhi Song,Lin-Xin Wu,Jun Zhang,Seeram Ramakrishna,Yun-Ze Long
For chronic wounds, frequent replacement of bandages not only increases the likelihood of secondary damage and the risk of cross infection but also wastes medication. Therefore, in situ real-time monitoring of the concentrations of residual drugs in bandages is crucial. Here, we propose a novel strategy that combines a triboelectric nanogenerator (TENG) with medical bandages to develop a smart bandage based on zeolite imidazolate framework TENG. During the process of wound healing, the electrical output of TENG changes with the continuous release of drugs. Based on the correlation between the electrical signal of TENG and drug concentration, the concentration of residual drugs in the bandage can be monitored in real-time in situ, guiding medical staff to replace the bandage at the most appropriate time. The smart bandage based on TENG provides a new strategy for in situ real-time monitoring of drug concentration and also provides an ideal and feasible solution for the field of biomedical drug sensing.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 1
·e70068
·
IF 3.4
Hailong Zhang,Ruimeng Li,Haishui Xu,Ling Quan,Chengyu Zhan,Peng Han,Kehan Xu,Yuping Tong
The accumulation of copper ions in the environment can devastate the ecological systems and threaten the health of organisms. Consequently, the development of effective adsorbents to extract Cu 2+ from aqueous solutions is urgently needed. Here, the Zeolitic Imidazolate Framework-8 (ZIF-8)/polyacrylonitrile (PAN) nanocomposite fibers were synthesized by electrospinning and further characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). ZIF-8 powders were uniformly distributed on the surface of the nanocomposite fibers, and amide CO NH bonds were formed between the NH 2 groups of ZIF-8 and the CO groups of PAN. The ZIF-8/PAN nanocomposite fibers demonstrated an exceptional Cu 2+ adsorption capacity of 275.7 mg g −1 at pH = 4.0. The adsorption process adhered to the pseudo-second-order kinetics and the Langmuir isotherm model. The adsorption mechanism, as conformed by FTIR and X-ray photoelectron spectroscopy (XPS) analysis, involves the coordination of the NH 2 and CO groups with Cu 2+ and the ion exchange processes between Cu 2+ and Zn 2+ for the nanocomposite fibers. This study provides a novel approach for the removal of Cu 2+ from aqueous solutions and addresses the challenge of recovering powder materials in wastewater treatment.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jinhao Gao,Hanwen Wang,Zhiyuan Gao,He Gui,Yanxin Wang,Jianguo Tang,Linjun Huang
The flexibility, wide response range, and ultra-high sensitivity of flexible sensors make them suitable forwearable technology, automated manufacturing, and robotics. The development of raw materials for flexible sensors and the design of their source layer structures can address a range of issues. In this article, we aim to develop flexible sensors for wearable technology by preparing MXene/PVDF@ZIF-8 multilayer nanofiber membranes through electrospinning technology. By incorporating ZIF-8 particles into PVDF fibers through in situ electrospinning technology, flexible sensors with a rough structure were obtained. We similarly employed vacuum filtration technology to introduce MXene nanosheets into PVDF@ZIF-8 nanofibers, further constructing a conductive network with a multidimensional structure in the vertical direction of the film. The performance of the prepared MXene/PVDF@ZIF-8 composite fiber membrane pressure sensor was tested, revealing its wide working range (0–125 kPa), high sensitivity (25.8–77.9 kPa -1 ), load/unload Time (20 ms/30 ms), and strong mechanical stability. Various human movements and lying postures were simulated, confirming that the sensor can effectively provide feedback on external pressure applied to the skin. This also demonstrates the broad application prospects of the flexible sensor in the field of flexible wearables.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 3
·e70008
·
IF 0
Yawen Wu,Xueying Hou,Ao Li,Ruijian Li,Qingqing Yang,Shaohua Jiang,Jing yu Hu,Qingliang You,Rui Guo
As the amount of tetrachlorobisphenol A (TCBPA) that causes potential adverse effects on human health in the environment is continually increasing. It is therefore important to develop new materials for the adsorption or degradation of these compounds using various techniques. In this study, two novel magnetic recyclable composite catalysts Zr–NiFe 2 O 4 @ZIF-67 and Zr–NiFe 2 O 4 @ZIF-8 were synthesized. These catalysts degraded tetrachlorobisphenol A (TCBPA) in water by activating peroxydisulfate (PDS)/peroxymonosulfate (PMS), respectively. The results show that the Zr–NiFe 2 O 4 @ZIF-67-5%/LED/(NH 4 ) 2 S 2 O 8 system can degrade 95% of TCBPA (20 mg/L) within 30 min, whereas the Zr–NiFe 2 O 4 @ZIF-8-10%/LED/KHSO 5 system degrades 90% of TCBPA within 30 min. In instances of metal leaching at low concentrations, nickel and iron ions declined to 0.008 mg·L −1 , TCBPA exhibits highly efficient and sustainable catalytic properties, maintaining over 80% efficacy across six cycles. The online infrared test experiment results showed the major functional groups disappearing within approximately 130 s. The results of electron paramagnetic resonance and free-radical-quenching experiments showed that SO 4 ˙ − , ˙OH, 1 O 2 , and O 2 ˙ − were involved in the degradation of TCBPA. The possible degradation paths are isomerization polymerization, dechlorination, hydroxylation, ring-opening by oxidation, and further transformation into small molecules of acids, aldehydes, alcohols and other compounds. Thus, in this study, a reliable technique for the degradation of halogenated bisphenol compounds is developed. Overall, the photocatalytic degradation of organic pollutants in water utilizing polymetallic composites as catalysts represents an innovative approach to water treatment, demonstrating enhanced catalytic activity and recyclability, with promising prospects for significant advancements in both theoretical research and practical applications.
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Food Bioscience
·
2025
·
IF 5.9
Anqi Sun,Shuo Qi,Yu Li,Yiyao Wu,Yin Zhang,Zhouping Wang
Sensitive and selective determination of azlocillin (Azl) is of great significance to food safety and human health as it is recognized as the most prevalently utilized β-lactam antibiotics. Herein, we develop a highly sensitive fluorescence aptasensor selective, and sensitive, determination of Azl in food samples. Initially, the aptamer A-58 with the highest affinity(K d = 64.5 ± 7.2 nM)was obtained by means of truncation. Subsequently, a highly stable aqueous dispersed perovskite nanocrystal MAPbBr 3 @ZIF-8 was synthesized and used as a fluorescent marker in aptasensors. The aptasensor was constructed by using MAPbBr 3 @ZIF-8 as the fluorescence signal source, aptamers as the specific recognition molecules, and AuNPs as a quenching agent. This design integrates the excellent optical properties of perovskite, the fluorescence quenching ability of AuNPs and the specificity of aptamer, exhibiting great promising for trace analysis of Azl in food samples. Under the optimal experimental conditions, the linear detection range of the developed aptasensor method spans from 0.1 to 100 ng/mL, with a detection limit of 0.025 ng/mL. The developed MAPbBr 3 @ZIF-8 based aptasensor has been effectively utilized for the quantification of azlocillin in milk, demonstrating significant potential in the realm of antibiotic detection.
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高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2024
·Vol. 30
·期 4
·1039-1051
·
IF 3.8
Yujie Yang,Xiaodong Qiao,Xinpeng Fan,Shuangquan Liao,Zhenfan Sun
Zinc oxide (ZnO) is widely used as an activator in the vulcanization process of natural rubber. However, due to its poor compatibility with natural rubber, a large amount of ZnO needs to use, and the unreacted ZnO can precipitate in various ways, posing significant harm to aquatic organisms and microorganisms. Therefore, it is necessary to reduce the dosage of ZnO in order to minimize its environmental impact. In this study, we applied ZIF-8, a zinc-based metal–organic framework, as a vulcanization additive in natural rubber. and it was found that ZIF-8 could promote the rubber vulcanization reaction by adsorbing sulfur, promoting sulfur ring-opening, and providing different ligand interactions of Zn 2+ . Moreover, even at low usage levels of ZIF-8, it effectively reduces the amount of ZnO while simultaneously improving the mechanical properties of the samples. This work provides an effective method to reduce the amount of ZnO without sacrificing the rubber properties and provides a new idea for the application of ZIF-8 in rubber materials. Highlights ZIF-8 enhances properties of natural rubber composites with low ZnO dosages. Revealing the reason why ZIF-8 promotes the vulcanization of natural rubber. Investigation of the effect of ZIF-8 on the vulcanization properties of natural rubber.
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高影响因子
危险品化学品经营许可证（带存储）