CERAMICS INTERNATIONAL
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2025
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IF 5.6
Yan Li,Jing-Wen Liu,Xiao-Xue Lian,Shu-Mei Yang
Triethylamine is an organic amine compound with strong irritancy and toxicity that threatens ecological balance and human health, making accurate detection crucial. However, achieving high sensitivity and selective detection of TEA in ppb level is challenging. Herein, we have successfully prepared an Au-ZnO/ZIF-8 via an interface oxidation strategy followed by Au nanoparticles loading. The synthesis process involves three key steps: firstly, ZnO nanofibers are prepared by electrospinning, followed by in-situ coordination growth to form a ZIF-8 layer on the ZnO surface; subsequently, Au nanoparticles are decorated onto the ZnO/ZIF-8 surface through an impregnation-reduction method; finally, the composites are calcined in a tube furnace to generate oxidation layers while retaining the intrinsic properties of ZIF-8. Sensing tests toward 100 ppm TEA reveal that the Au-ZnO/ZIF-8 sensor exhibits a response of 1012.5 with a low detection limit of 2.78 ppb at 235 °C. This performance is 13.9-fold higher than that of ZnO/ZIF-8 (72.9 at 303 °C) and 30.5-fold higher than that of pristine ZnO (33.1 at 328 °C). Furthermore, the sensor demonstrates high selectivity for TEA, short response times (7 s), as well as excellent repeatability and stability. It indicates that the Au-ZnO/ZIF-8 sensor holds great potential for practical TEA detection, thereby providing a feasible strategy to improve the gas detection capabilities of MOF-based sensors.
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ANALYTICA CHIMICA ACTA
·
2014
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IF 4.517
Li Qiao,Ning Gan,Jiayu Wang,Huiju Gao,Futao Hu,Hongfei Wang,Tianhua Li
A novel 8-electrode array as stir bar was designed for selective extraction of trace level exogenous estrogens from food samples, followed by liquid desorption and HPLC-photodiode array detection. The array consisted of 8 screen-printed electrodes and each electrode was modified with Fe 3 O 4 @meso-/macroporous TiO 2 microspheres and molecularly imprinted film (m-TiMIF). The fabrication of the imprinted film coating was very simple without organic solvents and chemical grafting. Both bisphenol A (BPA) and diethylstilbestrol (DES) were employed as templates in m-TiMIF fabrication in order to enrich both targets simultaneously. Interestingly, the imprinted stir bar array showed higher extraction capacity and selectivity for BPA and DES than the non-imprinted counterpart. Meanwhile, it exhibited fast adsorption and desorption kinetics due to increased mass transport in the ultra-thin film. Importantly, the m-TiMIF coating was robust enough for at least 20 uses without obvious alteration in extraction performance. The main parameters affecting the extraction efficiency, including stir speeding, sample pH, ionic strength, extraction time, desorption solvent and time, were optimized. Under optimal experimental conditions, the limits of detection (S/N = 3) of the developed method were 0.28 and 0.47 μg L −1 for BPA and DES respectively, with enrichment factors of 32.6 and 52.8-fold. The linear ranges were 3.0–1500 μg L −1 and 4.0–1500 μg L −1 for BPA and DES, respectively. The m-TiMIF-coating conferred better recovery and selectivity, compared with the commercial stir bar coating. The new method was successfully applied to assess BPA and DES in pork and chicken samples with satisfactory recovery.
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高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 21
·e06152
·
IF 2
Shuai Wang,BingXi Song,Ze Su,Yijie Cai,Long Liu,Chang Su,Yanqiang Zhang
Graphical A new ionic liquid plasticizer [NTAZ][NTf 2 ] was synthesized. Compared with the traditional plasticizer DOA, [NTAZ][NTf 2 ] can significantly improve the energy of the propellant formulation. Energetic plasticizer is an important means to improve the energy performance of solid propellants, but there is no suitable energetic plasticizer for HTPB/TDI system. In this work, a nitrate-functionalized ionic liquid plasticizer of 1-Methyl-4-(8-(Nitrooxy)octyl)-1,2,4-triazolium bis((trifluoromethyl)sulfonyl)imide ([NTAZ][NTf 2 ]) was synthesized, and the energy was increased by the combination of nitrate functional group and 1,2,4-triazole cation. The hydrogen bond between the anion and the cation and HTPB achieves a good plasticizing effect. When 6% [NTAZ][NTf 2 ] was added to HTPB/TDI system, the glass transition temperature decreased from −63.41 °C to −64.84 °C, the tensile strength increased from 0.52 MPa to 0.79 MPa, and the storage modulus increased from 64.02 MPa to 110.32 MPa. When 4% DOA is replaced by the same amount of [NTAZ][NTf 2 ] in the HTPB formulation system, the specific impulse is increased from 261.0 s to 271.4 s. This study will guide the design and application of new energetic solid propellant plasticisers, both theoretically and experimentally.
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PROGRESS IN ORGANIC COATINGS
·
2025
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IF 7.3
Hao Yang,Yi Liu,Hao Chen,Hua Li
Epoxy resin coatings are widely used for corrosion protection due to their cost efficiency, strong chemical durability and favorable mechanical strength. Antifouling agents have also been commonly applied to epoxy coatings for further antifouling function. However, due to the lack of reliable control of continuous release of the antifouling agents, the antifouling effect and service life keeps elusive. This study used a zinc-based metal organic framework ZIF-8 as a nanocarrier to prepare a novel antifouling agent NH 2 -ZIF-8@BITEP. The antifouling agent has uniform particle size and can effectively kill E. coli and S. aureus . After blending with epoxy resin, the resulting ZB coating effectively achieves contact sterilization, especially the ZB coating containing 20wt%NH 2 -ZIF-8@BITEP shows pronounced capability of inhibiting the formation of bacterial biofilm and the adhesion of algae even after 14 days incubation. In addition, the coating shows significantly enhanced corrosion resistance due to the hindering effect of the nanoparticles in the coating. After 7 days of salt spray testing, the ZB coating exhibits the least corrosion occurrence and no decrease in |Z| during EIS testing. The results would give insight into further understanding and potential antifouling and anti-corrosion applications of the newly synthesized antifoulant.
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Ya-Ting Qin,Hui Peng,Xi-Wen He,Wen-You Li,Yu-Kui Zhang
A multifunctional diagnosis and treatment integration platform is crucial in cancer treatments. Here, we show that by integrating Gd-doped silicon nanoparticles (Si–Gd NPs), chlorine e6 (Ce6), doxorubicin (DOX), zeolitic imidazolate framework-8 (ZIF-8), poly(2-(diethylamino)ethyl methacrylate) polymers (HOOC-PDMAEMA-SH), and folic acid–poly(ethylene glycol)–maleimide (MaL–PEG–FA) into one single nanoplatform by a self-assembly method, novel multifunctional MOFs (named FZIF-8/DOX–PD–FA) are synthesized with great biocompatibility and tumor targeting as well as pH responsiveness and no drug leakage for drug delivery. In the design, Si–Gd NPs and Ce6 embedded in the nanocomposites are used for magnetic resonance and fluorescence dual-modal imaging, respectively. DOX loaded by the FZIF-8/DOX–PD–FA porous structure is used for chemotherapy, while Ce6 is excited by near-infrared radiation (NIR) for photodynamic therapy. In addition, the pH-responsive ability of HOOC-PDMAEMA-SH to effectively prevent drug leakage is demonstrated by drug release studies in vitro. From the results of confocal microscopy imaging in vitro and fluorescence/magnetic resonance imaging in vivo, FZIF-8/DOX–PD–FA showed a targeting effect on MCF-7 cancer cells. More importantly, the results of treatment experiments on tumor-bearing mice showed that the tumor volume of the FZIF-8/DOX–PD–FA + NIR group is decreased the most compared to the original volume. Owing to the unique dual-modal imaging capability and excellent chemo-/photodynamic combinational cancer therapy effect, the present hybrid nanocarrier provides a new research platform for a new generation of theranostic nanoparticles.
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高影响因子
BIOMATERIALS
·
2017
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IF 8.402
Dan Lin,Yanjun Chai,Yifan Ma,Bing Duan,Yuan Yuan,Changsheng Liu
Initiation of endogenous repair mechanisms, including key steps of stem cell recruitment and cartilage intermediate formation in endochondral ossification , is vital to regeneration of large bone defects. To biomimetically promote a rapid initiation and ensuing osteogenic stimulation, exogenous chemokine IL-8 and growth factor BMP-2 were orchestrated in a mesoporous bioactive glass (MBG)-based spatiotemporal delivery system, to achieve a rapid release of IL-8 followed by a long-term sustained release of BMP-2. The synergistic effect of IL-8 and BMP-2 on initiation stage of bone healing and underlying mechanism were thoroughly investigated in vitro and in vivo . Intriguingly, apart from its superiority in stem cell recruitment to BMP-2, IL-8 not only endowed a histological “prep-state” of endochondral ossification by up-regulating chondrogenic genes and inducing the formation of extensive cartilage tissues, facilitating rapid bone transformation by BMP-2, but also triggered a cellular “prep-state” with high expression of BMP receptors, enhancing the osteoinductivity of BMP-2. With the spatiotemporal delivery system, orchestrated signal stimuli of IL-8 and BMP-2 induced a rapid initiation including efficient stem cell recruitment and a “chondrogenic/osteogenic balance” at the first stage of endochondral ossification, and the scaffold facilitated sufficient osteoconductivity , together resulting in early extensive bone mineralization and an advanced regeneration throughout the repair of large bone defect. We believe this new idea could provide insights toward designing bone-repairing biomaterials with higher regenerative efficiency.
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高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 43
·e04072
·
IF 2
Xiao Bai,Yinxue Zhou,Chunyan Lv,Fanjun Zhang,Ziyin Yang,Zhe Liu
This work demonstrates that Zn single atoms exhibit intrinsic oxidase-like activity. Zn single-atom nanozymes (Zn-SAs/NC) were synthesized via direct pyrolysis of ZIF-8 at 1000 °C under N 2 atmosphere, which retains a rhombic dodecahedral morphology with atomically dispersed Zn sites. Crucially, Zn-SAs/NC exhibited pronounced oxidase-like activity, efficiently catalyzing the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB without exogenous H 2 O 2 . Control experiments with metal-free NC confirmed that the catalytic activity originated specifically from the Zn single atoms, challenging the traditional view of Zn's catalytic inertness. The Zn-SAs/NC-catalyzed TMB oxidation system was exploited for colorimetric detection of tannic acid (TA) based on TA's inhibitory effect, achieving high sensitivity (LOD = 0.016 µM) and selectivity. Successful application in real tea samples validated the method's practicality, establishing Zn single atoms as a novel nanozyme platform. Graphical This work develops a Zn single-atom nanozyme (Zn-SAs/NC) derived from ZIF-8 pyrolysis, which exhibits robust intrinsic oxidase-like activity for highly sensitive and selective colorimetric detection of tannic acid with a low detection limit of 0.016 µM.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Zhenguo Wang,Tingting Chen,Zhiwen Zheng,Bocheng Su,Kangwei Wen,Lin Qin,Changqing Song,Binbin Liu,Haihong Yin
Lithium–sulfur batteries (LSBs) are regarded as a competitive candidate for future energy storage systems due to their exceptionally high theoretical capacity and energy density, but their practical use is limited by severe lithium polysulfides (LiPSs) shuttling and uncontrolled lithium dendrite growth, harming cycling stability and Coulombic efficiency. Herein, a multifunctional Ce-ZIF-8/PDA@PP separator is fabricated via in situ growth. Theoretical and experimental studies confirm it integrates synergistic functionalities from polydopamine (PDA), ZIF-8, and Ce doping. The PDA interlayer, rich in polar groups, enhances electrolyte wettability, homogenizes Li+ flux, acts as a chemical anchor and nucleation facilitator, enabling uniform Ce-ZIF-8 growth on inert PP. ZIF-8 provides uniform microporous channels for size-selective Li+ transport and LiPSs anchoring sites. Redox-active Ce3+/Ce4+ centers enable dynamic electron transfer via 4f–5d orbitals, accelerating LiPSs redox kinetics, enhancing adsorption, and regulating Li+ deposition through local electric field modulation. Consequently, symmetric cells with this separator achieve ultralong stability over 3600 h at 1 mA cm–2/1 mAh cm–2, while full cells cycle stably over 600 cycles at 1 C with 0.040% per cycle capacity decay. This study offers a robust separator strategy to concurrently address polysulfide diffusion and lithium dendrite growth in high-performance LSBs.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Meiling Xu,Linchun Nie,Jiawei Liao,Dejing Meng,Wenjing Liu,Haobo Yang,Ranhao Zhao,Qingxiang Zhou
A novel and visible ratiometric fluorescence sensor based on magnesium and nitrogen co-doped carbon dots (Mg, N-CDs) encapsulated in zeolitic imidazolate framework-8 (Mg, N-CDs@ZIF-8) was designed for effective detection of oxytetracycline (OTC), employing a “turn-off/turn-on” fluorescence sensing strategy. The blue-emission Mg, N-CDs@ZIF-8 was quenched owing to fluorescence resonance energy transfer by OTC, while the green fluorescence of OTC was significantly enhanced through the interaction of Mg 2+ and Zn 2+ with OTC, enhancing the visual tracking of OTC through a distinct blue-to-green color transition. This sensor displayed a wide linearity range (0.02 − 25 μg/mL), a low detection limit (14.2 ng/mL), and a fast response time (6 min). The validity of the sensor was successfully verified by detecting OTC in milk, honey, tap water, and lake water samples. Additionally, an expandable fluorescence sensor array was constructed for the discrimination of four tetracycline antibiotics (TCs) in real samples, indicating significant application in complex environmental samples.
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高影响因子
Advanced Healthcare Materials
·
2019
·Vol. 8
·期 13
·1900174
·
IF 6.27
Haishi Qiao,Jing Jia,Haowen Shen,Sibo Zhao,Enping Chen,Wei Chen,Bin Di,Chi Hu
Nanosystems responsive to tumor-specific enzymes are considered as a highly attractive approach to intracellular drug release for targeted cancer therapy. Mesoporous silica nanoparticles are capped with tryptophan-mediated cucurbit[8]uril complex with Fe 3 O 4 to minimize the premature drug leakage while being able to deliver the payload on demand at the target tissue. The supramolecular interaction between tryptophan and cucurbit[8]uril is disrupted in the presence of indoleamine 2,3-dioxygenase 1 (IDO1) enzyme (abundant in the tumor intracellular microenvironment), which catalyzes the metabolism of tryptophan into N -formylkynurenine, resulting in the disassembly of the “gate-keeper” of the nanocarriers and intracellular release of therapeutics exclusively in tumor cells. The drug release from the nanocarrier with high selectivity to overexpressed IDO1 enzyme induces significant cytotoxicity against HepG2 cells in vitro, as well as the superior antitumor effects in vivo. This robust supramolecular nanosystem with sophisticated structure and property provides a promising platform for intracellular drug release targeting the intrinsic microenvironmental enzyme inside the tumor cells.
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高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Chunying Min,Yijie Yang,Hongyu Liang,Amna Siddique,Zhiwei Xu
Carbon fiber–reinforced polymers (CFRPs) inherently experience stress concentration due to the significant modulus differences between carbon fiber (CF) and the resin. In this work, the zinc oxide nanorods synthesized on the surface of CF cloth were employed as the zinc source to construct a zinc oxide@zeolitic imidazolate framework-8 (ZnO@ZIF-8) interfacial transition layer, which effectively narrowed the modulus gap between CF and poly(hexahydrotriazine) cross-linked polyimide (PI-PHT), thereby facilitating stress transfer and frictional heat dissipation. Compared to unmodified composite, CF@ZnO@ZIF-8/PI-PHT exhibited a 45% increase in tensile strength and a 54% reduction in wear rate. Furthermore, closed-loop recycling of CF@ZnO@ZIF-8 and its composite was achieved while retaining superior mechanical and tribological performance. This work provides a new strategy for developing environmentally sustainable, recyclable, and wear-resistant CFRPs. Highlights Modulus gradient design effectively reduced stress concentration. Interface was reinforced by mechanical interlocking and chemical bonding. Interphase significantly enhanced the tribological properties of composites. Closed-loop recycling was achieved through the degradability of resin. Recycled composites still maintain high performance.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jiali Tang,Viatcheslav Freger,Lu Shao,Xuezhong He
Metal-organic frameworks (MOFs)-based hybrid composite membranes are promising candidates for achieving highly efficient water purification. In this study, a facile, novel pressure-induced filtration method involving in-situ polymerization of butyl methacrylate (BMA) was proposed for sealing ZIF-8 nanoparticles on top of polyethersulfone (PES) ultrafiltration membrane support. The developed (ZIF-8+polyBMA)/PES composite membranes with thin toplayers of <1 μm present attractive water permeance (up to 31 LMH/bar) and good rejection of Congo red (99.2 %) and Methylene blue (99.1 %). The ZIF-8 particles served as direct-through channels with superior separation performance due to their high porosity and tunable pore structure, while the interstices were successfully sealed with polyBMA by in-situ polymerization, as demonstrated by SEM and dye removal experiments. It was found that the morphology of ZIF-8 transformed from a rhombic dodecahedron to two-dimensional hexagonal nanosheets during the fabrication process. We hypothesize that this surprising phenomenon is caused by the reaction of the initiators (Na 2 S 2 O 5 and K 2 S 2 O 8 ) that generate the hydroxyl and sulfate radicals attacking and transforming the Zn-MIM bond network of ZIF-8. However, insights into the structural changes need to be further investigated to understand the mechanism involved.
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