SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Wenquan Kong,Maria Serdechnova,Valeryia Kasneryk,Dahai Gao,Hao Wang,Xinyuan Xie,Carsten Blawert,Mikhail L. Zheludkevich,You Zhang
An efficient and simple in-situ/mechanical two-step strategy has been discovered for the fabrication of nanocontainers based on zeolite imidazole framework-8 (ZIF-8) with corrosion inhibitors (benzotriazole, BTA). The nanocontainers were applied in anticorrosive coatings with anticorrosion and antibacterial bifunctions for aluminum alloys AA2024. The effects of ZIF-8 modified with the corrosion inhibitor via different methods (in-situ, mechanical, and two-step strategies) on its morphology, composition, structure, loading/release behavior were studied and discussed. Results showed that the amount of loaded BTA was positively correlated with the crystal size of the final ZIF-8, impacting sustained release. Compared with the conventional primary load (in-situ and mechanical loading way), the two-step loading method (in-situ followed by mechanical treatment) achieved a higher BTA loading without evident ZIF-8 morphology and structure changes. The two-step modified (2-BTA@ZIF-8) powders exhibited good corrosion inhibition and remarkable antibacterial properties against Escherichia coli and Staphylococcus aureus . Additionally, the 1-BTA@ZIF-8 (in-situ strategy), 1-BTA/ZIF-8 (mechanical strategy) and 2-BTA@ZIF-8 composites were dispersed in acrylic resin to prepare anticorrosive and antibacterial bifunctional coatings. Results showed that the 2-BTA@ZIF-8 incorporated acrylic coatings exhibited superior anticorrosion performance and antimicrobial activity compared to the unmodified coating due to the controlled release of BTA. Thus, elaborated strategy represents a feasible and effective way to construct high-performance anticorrosive and antimicrobial coatings with metal-organic framework materials.
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高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 16
·1367
·
IF 4.4
Xiaobo Han,Yihao Geng,Jieni Wang,Shuqin Zhang,Chenlin Wei,Leichang Cao,Shicheng Zhang
Metal–organic frameworks (MOFs) receive wide attention owing to their high specific surface area, porosity, and structural designability. In this paper, ZC-Ru and ZC-Cu electrodes loaded with monatomic Ru and Cu doped with nitrogen were prepared by pyrolysis, ion impregnation, and carbonization process using ZIF-8 synthesized by static precipitation as a precursor. ZC-Cu has a high specific surface area of 859.78 m2g−1and abundant heteroatoms O (10.04%) and N (13.9%), showing the specific capacitance of 222.21 F g−1at 0.1 A g−1in three-electrode system, and low equivalent series resistance (Rct: 0.13 Ω), indicating excellent energy storage capacity and electrical conductivity. After 10,000 cycles at 1 A g−1in 6 M KOH electrolyte, it still has an outstanding capacitance retention of 99.42%. Notably, symmetric supercapacitors ZC-Cu//ZC-Cu achieved the maximum power density and energy density of 485.12 W·kg−1and 1.61 Wh·kg−1, respectively, positioning ZC-Cu among the forefront of previously known MOF-based electrode materials. This work demonstrates the enormous potential of ZC-Cu in the supercapacitor industry and provides a facile approach to the treatment of transition metal.
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PubMed
高影响因子
Small
·
2024
·
IF 13
Jiabao Dong,Xupeng Chai,Yucheng Xue,Shiyun Shen,Zhuo Chen,Zetao Wang,Eloy Yinwang,Shengdong Wang,Liang Chen,Fengfeng Wu,Hengyuan Li,Zehao Chen,Jianbin Xu,Zhaoming Ye,Xiongfeng Li,Qian Lu
Adoptive cellular therapy is a promising strategy for cancer treatment. However, the effectiveness of this therapy is limited by its intricate and immunosuppressive tumor microenvironment. In this study, a targeted therapeutic strategy for macrophage loading of drugs is presented to enhance anti-tumor efficacy of macrophages. K7M2-target peptide (KTP) is used to modify macrophages to enhance their affinity for tumors. Pexidartinib-loaded ZIF-8 nanoparticles (P@ZIF-8) are loaded into macrophages to synergistically alleviate the immunosuppressive tumor microenvironment synergistically. Thus, the M1 macrophages decorated with KTP carried P@ZIF-8 and are named P@ZIF/M1-KTP. The tumor volumes in the P@ZIF/M1-KTP group are significantly smaller than those in the other groups, indicating that P@ZIF/M1-KTP exhibited enhanced anti-tumor efficacy. Mechanistically, an increased ratio of CD4+ T cells and a decreased ratio of MDSCs in the tumor tissues after treatment with P@ZIF/M1-KTP indicated that it can alleviate the immunosuppressive tumor microenvironment. RNA-seq further confirms the enhanced immune cell function. Consequently, P@ZIF/M1-KTP has great potential as a novel adoptive cellular therapeutic strategy for tumors.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Sunlong Li,Siyu Hu,Yifeng Shi,Yeheng Huang,Yuli Chen,Yan Chen,Fengyu Zhang,Zhan Gao,Shuqing Jin,Qiwei Zhou,Shu Yang,Haibo Liang,Lianggao Yu,Shuhao Zhang,Chongan Huang,Chenglong Xie,Zaher Meftah,Aimin Wu,Xiaolei Zhang,Xiangyang Wang
Ferroptosis is a major contributor to intervertebral disc degeneration (IVDD) and represents a promising therapeutic target; however, effective medications that specifically target ferroptosis are still lacking. Consequently, strategies aimed at suppressing the expression of ferroptosis-related genes, such as small interfering RNA (siRNA) targeting activating transcription factor 3 (ATF3), appear to be a feasible therapeutic approach for IVDD. Zeolitic imidazolate framework-8 (ZIF-8) exhibits exceptionally high binding affinity for nucleic acids, including siRNA. Nevertheless, its practical application is hindered by challenges such as limited siRNA encapsulation and potential toxicity arising from Zn 2 ⁺ ion release during degradation. In the current study, a novel siRNA delivery system is designed with low toxicity, high encapsulation efficiency, and sustained release by hybridizing classical ZIF-8 with histidine (H-ZIF-8) through defect engineering. In vitro functional studies demonstrated that H-ZIF-8 significantly enhances the delivery efficiency of siATF3 in nucleus pulposus cells (NPCs), and effectively suppresses ferroptosis and extracellular matrix (ECM) degradation. Furthermore, the incorporation of histidine into ZIF-8 may improve its biocompatibility by reducing the proportion of Zn 2 ⁺ ions present. In vivo, siATF3@H-ZIF-8 significantly inhibited ferroptosis and alleviated intervertebral disc degeneration (IVDD) in a rat model through sustaining ATF3 knockdown. This research suggests that histidine-modified ZIF-8 may serve as a novel system for siRNA delivery and an effective gene therapy method for diseases, including IVDD.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Muyao Li,Xiangming Zhu,Linghui Yin,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
The simultaneous removal of particulate matter (PM) and toxic gases (SO 2 , NO x , VOC S , etc.) remains a critical challenge in air pollution control. To address this, we developed a multifunctional zeolitic imidazolate framework-8 (ZIF-8)/polystyrene (PS) nanofiber membrane (ZIF-8/PS NFM), forming a hierarchical porous (micro-/ meso -/macroporous) structure for efficient PM capture and SO 2 adsorption. As a representative metal-organic framework, ZIF-8 offers exceptional gas adsorption capability due to its high specific surface area and uniform micropores. The incorporation of ZIF-8 nanoparticles into PS nanofibers enhanced the BET surface area (51 to 175 m 2 ·g −1 ), porosity (0.148 to 0.190 m 2 ·g −1 ), and tensile strength (0.24 to 1.45 MPa). In PM filtration tests, the optimized ZIF-8/PS NFM achieved outstanding removal efficiencies of 99.73 % (PM 0.3 ) and 99.96 % (PM 2.5 ), while maintaining low pressure drop (83 Pa and 27 Pa, respectively). Moreover, the membrane demonstrated a remarkable SO 2 adsorption capacity of 1370 mg·g −1 at 55 % relative humidity, attributed to its high surface area and abundant unsaturated Z n 2+ sites. This work provides a promising strategy for the synergistic capture of PM and SO 2 with high efficiency and stability.
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高影响因子
JOURNAL OF CATALYSIS
·
2023
·
IF 7.3
Shuhao Li,Feng Wang,Zongli Xie,Derrick Ng,Boxiong Shen
Zeolitic imidazolate framework-8 (ZIF-8) based catalysts are considered as promising candidates for the selective catalytic reduction of NO by CO (CO-SCR) reaction due to their large specific surface area. However, the structure of ZIF-8 will be damaged during the synthesis procedure of the catalyst, leading to a decrease in their physical properties, which in turn affects the catalytic performance of the catalyst. Herein, a CeO 2 -ZIF-8 core-shell structure was synthesized and doped with Fe, resulting in the formation of Fe@CeO 2 -ZIF-8, for CO-SCR reaction. Characterization results show that the Fe@CeO 2 -ZIF-8 core-shell catalyst has better morphology, thermal stability, and higher specific surface area than the FeCe co-impregnated ZIF-8 catalyst (FeCe@ZIF-8 (IM)). Moreover, the reducibility of the reactive Fe species in the Fe@CeO 2 -ZIF-8 core-shell catalyst is also enhanced. As a result, the Fe@CeO 2 -ZIF-8 core-shell catalyst exhibited higher low-temperature CO-SCR catalytic activity with its NO conversion reaching 99% at 250 °C versus the FeCe@ZIF-8 (IM) catalyst (89% at 250 °C). The experimental results were further verified by density functional theory (DFT) calculations including Electron Localization Function (ELF), Valence Charge Density Difference (VCDD), Projected Density of States (PDOS) and Bader charge analyses. The calculation results revealed that the core-shell configured Fe@CeO 2 -ZIF-8 catalyst has a stronger active metal-support charge transfer and better capacity for the adsorption of the reactants. The reaction mechanism over Fe@CeO 2 -ZIF-8 core-shell catalyst was investigated via in situ DRIFTS experiments, and results showed that the nitro compounds and formate species are critical intermediates in this reaction at a higher temperature range (300–350 °C). This work provides a new strategy for the synthesis of ZIF-8 based catalysts with better properties for CO-SCR reaction.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 4
·1621-1634
·
IF 3.5
Li Yangsong,Zhao Xiaoyan,Fan Liya,Zhu Xiao,Cui Zhaoliang
Polylactic acid/ZIF-8 composite membranes were prepared by polylactic acid (PLA) electrospun fibers and zeolitic imidazolate framework-8 (ZIF-8). In order to adhere inorganic particles to the fiber membrane effectively, water-soluble polyvinyl alcohol (PVA) was mixed with ZIF-8 and scraped onto the PLA fiber membrane. Furthermore, the samples were treated by steam for obtaining the rich pore structures. The coating amount of ZIF-8 and the steam treatment time of the composite membrane were determined by evaluating the adsorption performance of the acid dye. The optimal PLA/ZIF-8 membrane was selected for antibiotics adsorption testing at different temperatures. The results showed that the stable and maximum adsorption capacities of tetracycline hydrochloride (TC) and oxytetracycline (OTC) were 90.92 and 69.64 mg/g at 60 °C, respectively. The adsorption processes of the two antibiotics were in accord with the second-order kinetic models. This work provided a technology for developing the porous membranes in water treatment.
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DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Xiang Wang,Jiahui Zhang,Jiaxin Jiang,Gaofeng Zheng,Wenwang Li
Bead-like PAN/ZIF-8 nanofiber membranes, of which the commercial ZIF-8 nanoparticles attached to the surface of PAN nanofibers, were prepared by a simple one-step electrospinning method. The fiber structures, electrospinning parameters and adsorption capacity to methyl blue were investigated. ZIF-8 distributed uniformly on the nanofiber, and the adsorption process followed the pseudo-second-order kinetics. Maximum adsorption capacity was obtained as 224.37 mg/g at ZIF-8 concentration of 10 wt%, methyl blue concentration of 100 mg/L, and time of 180 min. Our work provides a simple, cost-effective process for the fabrication of MOFs nanofiber membranes with good adsorption capacity that suitable for practical commercial applications.
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高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2013
·Vol. 19
·期 40
·13484-13491
·
IF 5.831
Yan-Yan Fu,Cheng-Xiong Yang,Xiu-Ping Yan
The unique features of high porosity, shape selectivity, and multiple active sites make metal–organic frameworks (MOFs) promising as novel stationary phases for high-performance liquid chromatography (HPLC). However, the wide particle size distribution and irregular shape of conventional MOFs lead to lower column efficiency of such MOF-packed columns. Herein, the fabrication of monodisperse MOF@SiO 2 core–shell microspheres as the stationary phase for HPLC to overcome the above-mentioned problems is reported. Zeolitic imidazolate framework 8 (ZIF-8) was used as an example of MOFs due to its permanent porosity, uniform pore size, and exceptional chemical stability. Unique carboxyl-modified silica spheres were used as the support to grow the ZIF-8 shell. The fabricated monodisperse ZIF-8@SiO 2 packed columns (5 cm long × 4.6 mm i.d.) show high column efficiency (23 000 plates m −1 for bisphenol A) for the HPLC separation of endocrine-disrupting chemicals (bisphenol A, β-estradiol, and p -( tert -octyl)phenol) and pesticides (thiamethoxam, hexaflumuron, chlorantraniliprole, and pymetrozine) within 7 min with good relative standard deviations for 11 replicate separations of the analytes (0.01–0.39, 0.65–1.7, 0.70–1.3, and 0.17–0.91 % for retention time, peak area, peak height, and half peak width, respectively). The ZIF-8@SiO 2 microspheres combine the advantages of the good column packing properties of the uniform monodisperse silica microspheres and the separation ability of the ZIF-8 crystals. Graphical Core strength : Monodisperse ZIF-8@SiO 2 (ZIF-8=zeolitic imidazolate framework 8) core–shell microspheres have been fabricated through controllable growth of a ZIF-8 shell on spherical carboxylate-terminated SiO 2 cores (see figure). The metal–organic framework material is suitable as a stationary phase for fast and highly efficient HPLC separation.
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高影响因子
Nano Select
·
2021
·Vol. 2
·期 6
·1225-1232
·
IF 0
Ziqi Zhang,Yan Zhang,Yingqi Liu,Siqi Zhang,Kaida Yao,Yueqiu Sun,Yang Liu,Xiangzhi Wang,Weimin Huang,Jun Lu
Cerium has been used as an implanted alloy additive for many years for it can enhance the mechanical properties of the alloy and restrain the corrosion of the implant. Moreover, cerium oxide nanoparticles are often used as an antibacterial material. However, there were few researches focusing on the antibacterial properties of Ce 3+ and Ce 4+ ions, instead of their corresponding oxide, as potential antibacterial coatings. Thus in this work, we loaded Ce ions into the porous structure of the ZIF-8 nanoparticles and co-deposited them with hydroxyapatite as a composite coating onto anodized titanium dioxide nanotubes array in order to test whether it can improve the anti-corrosion and antibacterial properties of the materials without affecting the biocompatibility.
研究领域:
生物材料学
·
纳米医学
·
表面工程
·
骨科植入物
·
抗菌材料
·
生物医学工程
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DOI
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Zhuxuan Lin,Ying Qian,Zequn Li,Han Zhang,Guangyao Li,Song Li,Meiling Chen,Jeonghun Kim,Wenkai Zhu
Formaldehyde as a common indoor volatile organic compound (VOC) poses serious health risks to humans. Therefore, developing efficient formaldehyde adsorbents is essential for improving indoor air quality. Recently, zeolitic imidazolate framework (ZIF)-based adsorbents have attracted significant attention due to their high efficiency in formaldehyde removal. In this work, cellulose nanofiber (CNF) was used as biomass templates to in situ grow ZIF-8, forming a ZIF-8@CNF filter with enhanced adsorption capacity. The physical–chemical properties of ZIF-8@CNF were investigated using SEM, XRD, FTIR and XPS. The results demonstrate that the successful self-assembly of ZIF-8 crystals onto CNF results in a ZIF-8@CNF filter with a high specific surface area and abundant pore structures. Meanwhile, the ZIF-8@CNF filter demonstrated remarkable formaldehyde adsorption capacity, and achieved 88.32% removal of formaldehyde within 6 h. Additionally, the filter maintains stable structural integrity while retaining over 70% of the formaldehyde adsorption capacity after undergoing five adsorption–desorption cycles, demonstrating outstanding reusability. Furthermore, the adsorption of formaldehyde by the ZIF-8@CNF filter relies on its internal layered porous structure and noncovalent interactions with formaldehyde molecules. Therefore, the as-prepared ZIF-8@CNF filter offers an effective solution for indoor formaldehyde removal.
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高影响因子
Nanomaterials
·
2026
·Vol. 16
·期 7
·398
·
IF 4.8
Weiao Li,Litiao Ren,Yuqi Zhao,Xinping Cong,Mingjin Zhang,Yan Liu,Qihui Shen,Xiaoyang Liu
Herein, an electrochemical sensor is reported for the first time based on an ordered macro–microporous composite derived from metal–organic frameworks (MOFs) for the highly sensitive detection of auramine O (AO), a Group 2B carcinogen. The hierarchical pore architecture, integrating an ordered macroporous network with a microporous ZIF-8 framework, enables the uniform dispersion of a high density of catalytically active sites. The interconnected macroporous channels facilitate efficient mass transport and rapid removal of reaction byproducts, effectively preventing pore blockage and ensuring stable sensing performance during repeated measurements. Owing to these structural advantages, the proposed sensor exhibits outstanding analytical performance toward AO detection, with a sensitivity of 0.4843 μA μM−1, a detection limit of 0.168 μM (S/N = 3), and a wide linear range from 0.5 to 50 μM. Moreover, the sensor demonstrates excellent selectivity and reproducibility, maintaining reliable responses even in the presence of 100-fold excess common food constituents such as tartrazine and glucose. Real sample analysis further confirms its high accuracy and operational stability. Overall, the electrochemical sensor based on silver nanoparticle-decorated ordered macro–microporous ZIF-8 synthesized via in situ reduction shows great potential as a portable and on-site tool for rapid AO detection in food. More broadly, ordered macro–microporous MOF-derived materials represent a promising platform for advanced electrochemical sensor applications.
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PubMed
高影响因子
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