ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jianzhong Ma,Chongxin An,Lei Zhang
In this work, we synthesized an acid-responsive zinc metal–organic framework (ZIF-8) at room temperature by a solvent method, which can not only be used as an antibacterial by releasing zinc ions but also as a carrier for antibacterial material encapsulation. Subsequently, the broad-spectrum antibacterial triclosan (TCS) was encapsulated in ZIF-8 by the impregnation method, and a long-term antibacterial and antimildew material with slow-release effect TCS@ZIF-8 was synthesized successfully. The encapsulation rate and drug loading rate of TCS@ZIF-8 prepared by adjusting the mass ratio of ZIF-8 and TCS were 71.9 and 25.1%, respectively. Further, TCS@ZIF-8 was introduced into polyacrylate (PA) emulsion, and PA/TCS@ZIF-8 nanocomposite emulsion was prepared successfully by the physical blending method. When the pH of the coating surface became slightly acidic due to the metabolic byproducts of microbial growth, ZIF-8 in PA/TCS@ZIF-8 disintegrated to release Zn2+ and TCS, which can effectively kill bacteria and mold. When the dosage of TCS was 4.0 wt %, the antibacterial rate of the PA/TCS@ZIF-8 nanocomposite film against Escherichia coli and S. aureus was 100 and 97.3%, respectively. Finally, PA/TCS@ZIF-8 nanocomposite emulsion-coated leather was prepared by the spraying method. Compared with the control group that did not use ZIF-8-encapsulated TCS, PA/TCS@ZIF-8 nanocomposite emulsion-coated leather not only showed better antibacterial and antimildew effects but also showed long-term antibacterial and antimildew performance even after being treated under hot and humid environments of 90% humidity and 40 °C for 30 days. Overall, this study not only provides theoretical guidance into the preparation of long-term antibacterial and antimildew coatings for leather but also has great application prospects in paper, clothing, furniture, and other fields, which has great significance in protecting consumers from the invasion of bacteria and mildew.
研究领域:
材料科学
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皮革化学
·
微生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2024
·
IF 3.7
Ayesha Komal,Amna Kasuri,Muhammad Yasin,Asim Laeeq Khan,Abdul Razzaq,Hamad Alhmohamadi,Faheem Hassan Akhtar,Arsalan Ahmad Raja,R. Nawaz,Emilia Abdulmalek,Mazhar Amjad Gilani
Separating butanol/water mixtures via distillation is notably energy-intensive and costly, highlighting the urgent need for more efficient alternatives. This study introduces a novel approach using mixed matrix membranes (MMMs) infused with Zeolitic Imidazolate Framework-8 (ZIF-8) transformed into its porous liquid (PL) form, aimed at enhancing the separation efficiency of butanol/water mixtures through pervaporation (PV). We selected ZIF-8 for its hydrophobic nature and high surface area, which are critical for improving both flux and selectivity in membrane-based separation processes. The study details the synthesis of ZIF-8-PL, its characterization through techniques such as Fourier Transform Infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM), and the fabrication of the MMMs. Our results demonstrate that ZIF-8-PL-based membranes at 55°C with a 30 wt% PL loading significantly enhance biobutanol-selective PV efficiency. Specifically, these membranes show an improvement in flux of approximately 102% and an increase in separation factor by 64% when compared to unmodified polydimethylsiloxane (PDMS) membranes. This significant enhancement highlights the effectiveness of PL-based fillers in advancing MMM performance for biofuel separation, providing a promising route to optimize energy efficiency and cost-effectiveness in industrial scale applications.
研究领域:
材料科学
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化学工程
·
生物燃料技术
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Xing Lai,Hongxiang Zhang,Weiye Xu,Jian You,Huaiyin Chen,Yongzhao Li,Weihe Yu,Jianying Huang,Changfa Xiao,Yuekun Lai,Weilong Cai
Highly permeable polyamide (PA) membranes with precise ion selection can be used for many energy-efficient chemical separations but are limited by membrane inefficiencies. Herein, polyphenol-mediated ZIF-8 nanoparticles with hydroxyl-rich hollow structure were synthesized by tannic acid tailored regulation. PA-based membranes with fast penetration, high retention, and precise Cl − /SO 4 2− selection were then synthesized through spatially and temporally controlling interfacial polymerization with modified ZIF-8 nanoparticles (tZIF-8) as aqueous phase additives or as interlayers. The effects of the embedding position of tZIF-8 on the structure, morphology, physicochemical properties, and performance of PA-based membranes were explored through a sequence of characterization techniques. The results revealed that the PA-based membrane with tZIF-8 embedded in the PA layer could achieve a high water permeance of 24.8 L m −2 h −1 bar −1 with a high retention of 99.4 % Na 2 SO 4 and a Cl − /SO 4 2− selectivity of 141, which was superior to most state-of-the-art PA-based membranes. Comparatively, the Cl − /SO 4 2− selection of the PA-based membrane with tZIF-8 embedded between the PA layer and the substrate was 136, while the water permeance was slightly enhanced to 28.2 L m −2 h −1 bar −1 . Excitingly, the resulting membranes all exhibit superior antifouling properties and stability. Our facile strategy for tuning membrane microstructures provides new ideals into the development of highly permeable and excellently selective PA-based membranes for precise ion sieving.
研究领域:
材料科学
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化学工程
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Hu Wang,Jiangchao Chen,Pengfei Pang,Yiran Bai,Zhiqiang Zheng,Tao Huang,Kunpeng Jiang,Yunyun Zhao,Guisheng Zhu,Huarui Xu
The development of lithium-metal batteries (LMBs) with high energy density and safety is considered a top priority for the next generation of rechargeable batteries. However, the mitigation of the inevitable reaction between lithium and the liquid electrolyte (LE), as well as the subsequent formation of Li dendrites, poses a crucial challenge that needs to be addressed. Upgrading traditional LEs serves as a pivotal strategy in achieving this objective. Here, we report a ZIF-8@SiO 2 /PVDF-HFP (ZSPH) quasi-solid electrolyte (QSE) with ultra-multistage pore crosslinked network structure. The interconnected micro-stage pore structure in a honeycomb-like morphology of polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) and the rich multistage pore structure of nanoscale SiO 2 “armored” zeolite imidazolium ester backbone-8 (ZIF-8@SiO 2 ) collectively establish a multi-stage ion transport channel. This unique structure facilitates appreciable ionic conductivity (2.21 × 10 −3 S cm −1 at 30 °C) and provides a wide and stable electrochemical window (approximately 5.0 V). The Li/ZSPH9-LiPF 6 /Li quasi-solid-state cell demonstrates an impressive longevity of over 1800 h at a current density of 0.2 mA cm −2 . The high compatibility of the interface between electrode and ZSPH QSE and effective inhibition of Li dendrites growth create synergistic effects, which make it possible to realize high energy density and safe LMBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Yi Feng,Zijing Li,Luqi Song,Shu Zhang,Bin Chen,Guanglin Wang,Kai Yang,Yan Lu,Ran Zhu
Radiation therapy is one of the core means of tumor treatment, especially in local control and radical treatment has an irreplaceable role. However, radiotherapy resistance is one of the major challenges in current clinical practice. Tumor cells have a strong ability to repair DNA damage, which can effectively resist DNA double-strand breaks caused by X-ray, thus weakening the killing effect of radiotherapy. In addition, the complexity of the tumor microenvironment (TME) will further reduce the sensitivity of radiotherapy, leading to poor treatment results. With the rapid development of nanotechnology, multi-modal combined therapy nanoplatform has gradually become a new strategy to overcome radiotherapy resistance. These nanoplatforms achieve synergies by integrating multiple therapeutic approaches, such as radiation sensitization, photothermal therapy and chemotherapy. In this study, we utilized ZIF-8, a member of the metal-organic frameworks, to simultaneously load ICG and Rapamycin for X-ray sensitization and combined photothermal therapy. In this formulation, Rapamycin enhances tumor cells' sensitivity to radiotherapy by inhibiting the mTOR signaling pathway, increasing DNA damage, regulating the cell cycle, and stimulating the STING pathway, which amplifies the tumor immune response. Meanwhile, ICG, as a photosensitizer, effectively converts light energy into heat, achieving tumor photothermal ablation. The modified drug-delivery system becomes a tumor-microenvironment-responsive smart carrier, increasing tumor cell uptake, prolonging retention at the tumor site, and achieving targeted drug delivery. It releases drugs in the specific tumor microenvironment, enhancing photothermal and radiotherapy sensitization effects. The results show that the smart dual-loaded nanoplatform effectively combines photothermal therapy and external-beam sensitization, reshapes the immunosuppressive tumor microenvironment and significantly inhibits tumor proliferation in the HepG2 subcutaneous xenograft model, demonstrating marked antitumor activity and good biosafety.
研究领域:
肿瘤学
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纳米医学
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放射生物学
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产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 13
·e202405849
·
IF 2
Juan Dai,Qixu Chen,Yue Li,Jin Wang,Yanchao Yin,Peiyu Zhao,Peichuang Li,Luying Wang
Graphical A defect-free PVDF/ZIF-8-LS membrane prepared by loading a continuous ZIF-8-LS film layer on the PVDF membrane exhibited high and stable adsorption performance for CR and TC removal, because of a good compatibility between PVDF membrane and ZIF-8-LS layer. Lignosulfonate (LS) enhances ZIF-8 dispersion and active sites but faces challenges in recovery and secondary pollution due to its powdered form. To address this, a polyvinylidene fluoride (PVDF)/ZIF-8-LS composite membrane was fabricated via vapor deposition, where LS promoted dense ZIF-8 growth and interfacial compatibility with PVDF. The resulting PVDF/ZIF-8-LS membrane shows a higher continuous, uniform and dense ZIF-8-LS layer without macroscopic cracks or obvious defects. In addition, the PVDF/ZIF-8-LS exhibits the best adsorption capacity of 110.6 mg g −1 for Congo Red, about 8.8 mg g −1 higher than the PVDF/ZIF-8, and 110.2 mg g −1 for tetracycline, respectively. With 92% capacity retention after three cycles and stability across pH 2–10. The more active adsorption sites facilitates the contact between the ZIF-8-LS layer and the adsorbed substance, in addition to the electrostatic, H-bonding, π-π interactions, and coordination bond are also conductive to the adsorption of PVDF/ZIF-8-LS. The excellent adsorption performance and good recyclability of the PVDF/ZIF-8-LS composite membranes exhibit a potential for adsorbing other contaminants from water.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Xinru Zhang,Tao Zhang,Yonghong Wang,Jinping Li,Chengcen Liu,Nanwen Li,Jiayou Liao
Mixed-matrix membranes (MMMs) for CO 2 /N 2 separation were prepared by incorporating nickel-substituted ZIF-8 (Zn/Ni-ZIF-8) into a polyether-block-amide (PEBA2533) polymer, in which the Zn and Ni ions in Zn/Ni-ZIF-8 have different affinities for CO 2 based on π-complexation; these MMMs exhibited exceptional molecular sieving properties compared to ZIF-8-PEBA MMMs. Scanning electron microscopy revealed that Zn/Ni-ZIF-8 nanoparticles were small and uniformly distributed within the PEBA, and attenuated total reflectance Fourier-transform infrared spectroscopy revealed good interfacial compatibility between the Zn/Ni-ZIF-8 and PEBA; consequently these MMMs exhibited excellent mechanical properties . The 10% Zn/Ni-ZIF-8-PEBA MMM showed a high CO 2 permeability of 321 Barrer, and a CO 2 /N 2 selectivity of 42.8 at 2 bar; these values were much higher than those of the 10% ZIF-8-PEBA MMM (266 Barrer and 33.8, respectively). We assume that different metal-ion affinities towards CO 2 resulted in the asymmetric adsorption/desorption behaviour of these MMMs, which led to a significantly higher permselectivity for the Zn/Ni-ZIF-8-PEBA MMM. The MMM loaded with 10% Zn/Ni-ZIF-8 exhibited long-term CO 2 -separation-performance stability under mixed-gas conditions, with a CO 2 permeability of 282 Barrer and a CO 2 /N 2 selectivity of 42.7. Moreover, the permselectivity of the 10% Zn/Ni-ZIF-8-PEBA MMM under pure-gas condition surpassed Robeson's upper bound reported in 2008.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 6
·065602
·
IF 1.151
Qilei Wu,Huihui Jin,Wei Chen,Siqi Huo,Xi Chen,Xiaogang Su,Hang Wang,Jun Wang
Rational construction of profitable microstructure in carbon-based electromagnetic composites is becoming a promising strategy to reinforce their microwave absorption performance. Herein, a N-doped highly porous carbon composite derived from thermal decomposition of Zn-based MOF (ZIF-8) has been synthesized for microwave absorption applications. The maximum reflection loss (RL) of −39.7 dB could be achieved with a thickness of 4 mm and the effective absorption bandwidth was from 7.9 GHz to 12.2 GHz covered X band (8–12 GHz). By comparing the porous carbon composites derived from conventional ZIF-8, it can be validated that porous structure, degree of graphitization and graphitic-N level is the key factors to improve the microwave absorption performance by increasing dielectric loss ability. The results demonstrated that the ZIF-8 derived graphitized nitrogen-doped porous carbon composites had great potential for microwave absorption performance, which may open up a new avenue to promote the electromagnetic applications of MOF-derived carbon composites.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
Journal of the Iranian Chemical Society
·
2018
·Vol. 16
·期 2
·385-392
·
IF 1.593
Xu Wenjing,Chen Yizhen,Kang Jianxun,Li Baojun
The hybrid nanocomposites ZIF@L composed of Zn-based MOFs (ZIF-8) and lignin were successfully synthesized via a simple one-step method at room temperature. The yield of the hybrid nanocomposites ZIF@L were up to 52% and the synthesis time was greatly shortened. Characterization using FT-IR, XRD, SEM and N 2 -sorption analysis indicated that ZIF@L composites exhibited rhombic dodecahedral structure such as the parent ZIF-8 synthesized in the absence of lignin and the incorporation of lignin did not destroy the framework integrity of ZIF-8. The ZIF@L composites were used to remove methyl violet (MV). The ZIF@L nanocomposites had a remarkable improvement in adsorption capacity of MV compared with the parent ZIF-8. The modified Langmuir model fitted better the equilibrium data of MV adsorption on the ZIF@L-4 composite and the maximum adsorption capacity of MV is 1001.2 mg g −1 . The pseudo-second-order model could describe well the kinetics process of MV dye onto the prepared adsorbents.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 5
·3678-3687
·
IF 4.682
Bai Xiao-Han,Zhang Jun,Cheng Guo-Ting,Liu Xiao-Fei,Sun Tian-Cai,Yang Jun,Cao Zhi-Kai,Ramakrishna Seeram,Long Yun-Ze
Burns on human skin often leads to slow recovery because of continuous wound infections caused by the loss of skin protection. In this study, a seed-free soaking method is put forward to prepare PCL@ZIF-8/εPL nanofibers as a dressing for burn wounds. This ZIF-8-coated polycaprolactone (PCL) fiber exhibits increased specific surface area, significantly increasing the polypeptide loading of epsilon polylysine (εPL) from 12 to 20 wt.%. The antibacterial experiment found that ZIF-8 and εPL exhibited dual antibacterial properties, and after εPL was loaded to ZIF-8, the nanofiber demonstrated stronger antibacterial properties that can better kill the remaining tenacious bacteria. This high-efficiency bactericidal property, combined with the ability to protect wounds from common infections by bacteria in the air, would promote wound healing, shortening the healing time period from 24 to 17 days. Further tissue sections confirm that the shielding effect and dual antibacterial properties of the composite fiber membrane are the reasons behind the acceleration of the healing of burns and scalds. Shielding and antibacterial material are helpful for the treatment of burns and scalds, and it may also guide the treatment of other types of wounds.
研究领域:
生物医学工程
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材料科学
·
伤口护理
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产品关联
DOI
高影响因子
DESALINATION
·
2023
·
IF 9.9
Xue Chang,PeiZhuo Hu,Huiling Liu,Zixiao Lv,Jingyi Yang,Jianli Wang,Zhan Li,Lijuan Qian,Wangsuo Wu
Due to the popularization of nuclear energy and the application of nuclear technology , there is an increasing demand for uranium resources. Extraction of uranium from seawater has become a hot topic. To achieve uranium capture, a three-dimensional carbon structure material (GO/ZIF-8@SA) with ionic stress elastic expansion consisting of graphene oxide, ZIF-8 and sodium alginate was developed. Surface morphological characteristics and elemental composition evaluation were determined by using SEM. The doping concentration of the elements in the synthesized products was measured by EDS. XRD, FT-IR and XPS confirmed the successful doping of ZIF-8. In seawater spiked with uranium, GO/ZIF-8@SA showed not only an ultra-high adsorption capacity of 1897 mg·g −1 for U(VI), but also a high selectivity . Interestingly, the volume of GO/ZIF-8@SA can be elastically expanded with the adsorption of U(VI). The expanded microspheres can be directly captured from the seawater by the mesh sieve. GO/ZIF-8@SA solves the problem of balancing adsorption capacity and selectivity in a complex seawater environment, which gives it great potential for application in seawater uranium extraction.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Wenji Zheng,Ziheng Li,Yan Dai,Xiangcun Li,Xuehua Ruan,Xiaobin Jiang,Xiujuan Zhang,Gaohong He
The regulation on cage size and CO 2 -philic environment of metal–organic frameworks (MOFs) is essential to improve CO 2 capture. In this work, [Bmim][Tf 2 N] was proposed to position into cages of ZIF-8 to achieve the selective permeation of CO 2 by pore screening and CO 2 adsorption. [Bmim][Tf 2 N] was introduced into cages of ZIF-8 by “adsorption-infiltration” strategy. Due to the strong interaction between [Tf 2 N] − and ZIF-8, the cages present a CO 2 -philic environment, which preferentially attracts CO 2 to enter these cages, ensuring the dissolution selectivity of CO 2 . Besides, the proper cage size tuned by [Bmim][Tf 2 N] provides CO 2 with a faster transport channel due to its smaller average kinetic diameter than N 2 , guaranteeing the diffusion selectivity of CO 2 . Consequently, the CO 2 separation in [Bmim][Tf 2 N]@ZIF-8/Pebax MMMs is intensified. With increasing the [Bmim][Tf 2 N] content in cages of ZIF-8, the pore volume by BET results decreases and the CO 2 adsorption from molecular simulation increases. In response, the CO 2 /N 2 selectivity of [Bmim][Tf 2 N]@ZIF-8/Pebax MMMs is enhanced constantly. Meanwhile, the CO 2 permeability is declined due to the narrowed cage size. All of these results demonstrate the significance of pore screening and CO 2 adsorption induced by [Bmim][Tf 2 N]. Specifically, [Bmim][Tf 2 N] 8 @ZIF-8/Pebax MMM at filler loading of 15 wt% exhibits the CO 2 permeability of 108.3 Barrer and the CO 2 /N 2 selectivity of 86.7, exceeding the 2008 Robeson upper bound. Especially the CO 2 /N 2 selectivity locates at a higher level than those of most reported works, indicating that appropriate tuning of the physicochemical properties within the nanocages of MOFs is significative to improve CO 2 capture.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）