JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xinyu Wang,Tianren Li,Chunrui Zhao,Zian Fang,Mingyu Li
The selective conversion of peroxymonosulfate (PMS) to singlet oxygen ( 1 O 2 ) critically depends on precise electronic structure engineering of the catalysts. The PMS electron-donating pathway enables 1 O 2 generation, but the high energy barriers associated with the initial intermediate *SO 5 •− formation result in an unsatisfactory 1 O 2 yield. Herein, Co-doped ZnO was designed by calcination of zeolitic imidazolate framework. Co doping significantly improved the visible-light response, enhanced the photogenerated carrier separation and migration of ZnO, and increased the ZnO valence band potential. These effects promoted the electron-donating reaction of PMS to produce 1 O 2 . The optimized Co-ZnO-3/vis/PMS system exhibited a 27.2-fold higher methylene blue degradation rate constant (k = 0.9871 min⁻¹) with 43.7 % total organic carbon removal within 5 min. In addition, the developed 1 O 2 -dominated oxidation system removed 83.1 % of chromaticity, 59.9 % of total phenol, and 24.8 % of chemical oxidation demand from the coking wastewater tailwater. This work provides a pathway for tailoring 1 O 2 -dominated reactive species for contaminant removal, providing a theoretical guideline for the deep treatment of coking wastewater tailwater.
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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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JOURNAL OF MEMBRANE SCIENCE
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2021
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IF 8.742
Yang Li,Xu Zhang,Asan Yang,Chunyue Jiang,Guoliang Zhang,Jingwen Mao,Qin Meng
Multi-layer graphene oxide (GO) membranes show great perspective in vast fields due to special two-dimensional structure. However, pure GO membranes generally face main obstacles of low flux, weak interlayer interaction and poor stability, which hinder their wide application in separation. Introduction of nano-porous crystals into interlayer of GO nanosheets to form 3D/2D structure is a potential strategy to overcome these issues. In this study, novel polyphenol etched hollow MOF/GO composite membrane was first synthesized employing modified hollow metal organic frameworks with strong hydrophilicity and hollow structure by one-step etching-aided cross-linking method. MOF nanoparticles with hollow structure expanded interlayer spacing of GO nanosheets and brought about formation of additional water channels, significantly reducing water transfer resistance. Meanwhile, nano-porous crystal MOFs modified by phenolic materials were able to cross-link adjacent GO nanosheets via π–π interfacial interactions to achieve stable structure and increase anti-swelling property of membranes. The pores with abundant hydroxyl groups provided strong free energy barrier for ions at medium and low concentrations of ionic strength , therefore not only greatly improved membrane permeaselectivity, but also enhanced anti-fouling performance. The prepared eZIF-8/GO nanofiltration membrane exhibited excellent permeate flux of 16.4 L m −2 h −1 bar −1 , 382% higher than pure GO membrane, and competitive Na 2 SO 4 rejection of 86.3%. By simply adjusting GO loading to further reduce membrane thickness, the permeate flux reached up to 45.4 L m −2 h −1 bar −1 with high rejection more than 99% for organic molecules. These results indicate that novel MOF/GO composite membranes have broad application prospects in desalination and water treatment.
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MATERIALS LETTERS
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2023
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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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CHEMISTRY-A EUROPEAN JOURNAL
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2013
·Vol. 19
·期 40
·13484-13491
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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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ACS Applied Nano Materials
·
2022
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IF 6.14
Peng Zhang,Junyou Chen,Lingfei Feng,Mingchi Jiang,Bin Xu
Silicon (Si) shows great potential for lithium-ion batteries (LIBs) due to its high theoretical capacity and low working potential. However, its intrinsic low electronic conductivity and large volume expansion during lithiation result in dramatic capacity fading and poor rate capability. Herein, a dual-confinement strategy is proposed for improving the lithium storage properties of Si by uniformly anchoring Si nanoparticles within a MXene/ZIF-8 derived carbon framework. In the Si/MXene@C composite, Si nanoparticles tightly bond with MXene and carbon through the formed interfacial Si–O–Ti and Si–C bonds, respectively, which is beneficial for alleviating the volume expansion of Si and promoting the interfacial charge transfer. Therefore, the Si/MXene@C composite exhibits excellent lithium storage performances in terms of high capacity (1006.1 mAh g–1 at 100 mA g–1), stable cycle performance (862.9 mAh g–1 after 150 cycles at 100 mA g–1), and superior rate capability (233.3 mAh g–1 at 5 A g–1), indicating its promising potential as an anode material for next-generation high-performance LIBs.
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ACS Applied Bio Materials
·
2025
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IF 4.7
Zhu Gao,Xinping Han,Wenyue Gao,Jianghua Li,Cuijuan Wang
Bacterial susceptibility testing and real-time inactivation are critical for safeguarding public health with broad applications in food safety monitoring and clinical diagnostics. For pH-dependent bacterial determination and hyperthermal inactivation applications, we developed needle-shaped ZnO/ZIF-L systems through a zeolitic imidazolate framework coating of zinc oxide by a self-template strategy. The pH-dependent ZnO/ZIF-L-embedded hydrogels were prepared by UV light-mediated olefin photopolymerization using acrylamide, N,N’-methylenebis(acrylamide), hydroxyethyl methacrylate, bromothymol blue (BTB), and ZnO/ZIF-L. The hydrogel achieves rapid visual detection of bacterial infections through a pH-responsive colorimetric transition, leveraging BTB to signal acidic microenvironmental shifts characteristic of bacterial proliferation. The ZnO/ZIF-L photosensitizers can enhance charge separation and transfer and generate highly reactive oxygen species. Escherichia coli and Staphylococcus aureus can be effectively inactivated for ZnO/ZIF-L hydrogels by a physical disruption/photodynamic synergistic antibacterial mechanism. The antibacterial efficiency can reach as high as 99%. The proposed strategy not only provides a sensitive strategy for bacterial determination but also implements efficient inactivation of bacteria simultaneously. This strategy combines real-time bacterial biosensing with on-demand antimicrobial action in a single platform, overcoming the limitations of conventional sequential detection-treatment approaches.
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International Journal of Pharmaceutics-X
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2025
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IF 6.4
Zhenyu Xiang,Jialing Liu,Yan Zhang,Ru Shen,Ying Lu,Rong Li,Qinying Shi,Guannan Zhang,Sijin Li,Jianbo Song
Triple-negative breast cancer (TNBC), a highly refractory malignancy characterized by aggressive clinical behavior, poses a significant therapeutic challenge due to its resistance to conventional treatments. While microwave thermal therapy (MWTT) emerges as a promising modality for TNBC treatment through deep-tissue penetration and uniform energy delivery, its reliance on prolonged hyperthermia exposure risks collateral damage to adjacent healthy tissues. Herein, we present a rationally engineered iron-doped zeolitic imidazolate framework-8 nanoplatform (Fe@Zif-8). This study aimed to develop a theranostic agent for MRI-guided combination therapy by pursuing the following objectives: (1) synthesizing and characterizing Fe-doped ZIF-8; (2) evaluating the enhancement of microwave thermal conversion efficiency via iron doping; (3) validating the nanoparticle's Fenton catalytic activity for reactive oxygen species (ROS) generation and glutathione depletion in the tumor microenvironment; and (4) demonstrating the synergistic antitumor efficacy of combined MWTT and CDT both in vitro and in vivo . Accordingly, Fe@Zif-8 was synthesized via a one-pot solvothermal method and systematically characterized. Its therapeutic performance was then rigorously assessed through a series of physicochemical and biological experiments. The iron dopants substantially enhance microwave absorption and dielectric loss effects in Zif-8 matrices, enabling Fe@Zif-8 to generate intensified hyperthermia under MW irradiation. Concurrently, iron ions released from the nanoplatform react with endogenous hydrogen peroxide (H 2 O 2 ) via Fenton catalysis to produce substantial ROS. The concerted action of MWTT and CDT achieves rapid tumor ablation while significantly reducing therapeutic energy requirements. Furthermore, the platform served as an effective T2 contrast agent for magnetic resonance imaging (MRI), enabling non-invasive monitoring. This work provides a new approach for the preparation of nanomaterials with highly efficient anti-TNBC performance.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Guanjian He,Yujiang Fan,Qiang Niu,Gelimei Zhang,Fenghui Wu,Dandan Chen,Chun Lv,Jie He,Haiying Lin,Minjie He
Elemental mercury (Hg 0 ) removal from coal combustion flue gas remains a significant challenge, primarily due to the limited uptake capacity and slow capture rate of commercial sorbents. Herein, the flower-like heterojunctions comprising ZIF-67-derived CoSe 2 uniformly dispersed in the layered g-C 3 N 4 (xCoSe 2 -CN), which were innovatively synthesized through an in-situ growth method followed by thermal selenization. The optimized 4CoSe 2 -CN exhibited exceptional Hg 0 capture performance, with an equilibrium capacity of 32.44 mg/g and an average rate of 10.47 μg/g/min, surpassing the most reported heterojunction materials. Furthermore, the satisfactory Hg 0 removal efficiency (>99 %) was maintained over a broad temperature window (25–140 °C) and under complex flue gas components. Notably, the sorbent demonstrated excellent recyclability, sustaining an average Hg 0 capture rate exceeding 90 % throughout five consecutive adsorption-regeneration cycles. The superior performance primarily originated from the heterojunction structure and the presence of under-coordinated selenide (Se 2 2− ). Interfacial electron redistribution modulated the electronic structure of CoSe 2 , inducing an upshift of d/p band centers and a reduced ∆ d-p band center gap, thereby significantly enhancing Hg 0 oxidation capability. Moreover, the Se 2 2− sites functioned as the dominant active centers for oxidizing Hg 0 to Hg 2+ and as binding sites for Hg 2+ to form HgSe. This work proposes an innovative strategy for designing MOF-derived heterojunction sorbents with modulated electronic structures to enable efficient Hg 0 capture.
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Food Bioscience
·
2026
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IF 6.2
Ming Zhou,Jun Cheng,Shunqian Zhuang,Songting Chen,Yingying Sun,Jiang Xu,Yunfei Xie
The residue of acetamiprid (AAP) in agricultural products poses a threat to food safety. Traditional Surface-enhanced Raman scattering (SERS) detection faces issues such as complex and expensive substrate preparation, and the difficulty of effectively utilizing SERS hotspots due to random molecular diffusion at low concentrations, resulting in low detection sensitivity. Here, we introduced the highly adsorptive 2-Methylimidazole zinc salt (ZIF-8) and developed a portable, ultra-sensitive silver nanoparticle filter paper (FP) loaded with 2-Methylimidazole zinc salt (Ag@FP@ZIF-8) substrate. It was found that the enhancement factor (EF) value for Rhodamine 6G (R6G) when measured using a handheld Raman spectrometer was 1.401 × 10 13 . More importantly, after being kept in a sealed and dark environment at room temperature for 45 days, the signal retention rate remained at 92%. Additionally, it exhibits good uniformity, as evidenced by a relative standard deviation of less than 8.5%. Combining a handheld Raman spectrometer with the previously proposed capillary-assisted sampling method has enabled AAP to be extracted from apple, pear and Bok choy leaves in a shoNeed file 22165rt period of time. The detection limit for Bok choy is 0.01 mg/kg, meeting the requirements of the EU Commission's regulation (EU) 2025/158. This method is expected to be developed into a rapid, deployable solution for on-site pesticide screening.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Shanle Zhang,Yunjie Sun,Zhipeng Xu,Yani He,Xiaodi He,Yue Zhang
The integration of inhibitor-encapsulated nanocontainers within organic coatings offers a viable approach for achieving sustained corrosion mitigation and extended protective functionality. In this study, a ZIF-8@LDH-P (ZLP) nanocontainer was developed, consisting of Ni-Co layered double hydroxide (LDH) derived from zeolitic imidazolate framework-8 (ZIF-8) precursors and incorporating trisodium phosphate (TSP) as a corrosion inhibitor. The release of phosphate ions from ZLP exhibited pH-responsive behavior, enabling triggered inhibitor release under corrosive conditions. When uniformly dispersed in the polyvinyl butyral (PVB) resin matrix and coated on Q235 carbon steel, the PVB/ZLP composite coating demonstrated an enhancement of two orders of magnitude in low-frequency impedance modulus (|Z| 0.01 Hz ) relative to pure PVB. Furthermore, the PVB/ZLP coating exhibited long-term protective capabilities, ascribed to the cooperative effect of regulated phosphate ions release for active corrosion inhibition, chloride ion entrapment by LDH interlayers, and the prolonged diffusion pathways for corrosive agents enabled by the lamellar structure of LDH. This study offers novel design strategies for ZIF-derived LDH nanocontainer-based anti-corrosion coatings with inhibitor loading.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Meng Yuan,Rui Yin,Kun Liu,Tao Jiang,Xiaofan Yang,Xiang Xu,Pengjuan Nie,Shuoyuan Liu,Honglian Dai,Zhenbing Chen
Diabetic wound healing is a global biomedical challenge. Bacterial infection and microenvironmental modulation are major factors in the refractory healing of diabetic wounds. Conventional therapeutic approaches are often hindered by limitations, such as inadequate drug penetration, the rise of antimicrobial resistance, and restricted depth of drug delivery. Nanomedicine is emerging as a prospective drug delivery and anti-infective therapeutic approach in the field of wound management. Herein, all-trans retinoic acid (ATRA) was loaded into a zeolite imidazolate framework-91 salt+ (ZIF-91 salt+). A gelatin methacryloyl (GelMA) hydrogel microneedles (MNs) patch based on this multifunctional ZIFs (denoted as GelMA-ZIF-91 salt+@ATRA MNs patch) was developed, which makes transdermal drug delivery and combinatory treatment for diabetic wound healing feasible. Significantly, ATRA-containing ZIF-91 salt+ provides nanocomposites with anti-inflammatory activity through their modulation of macrophage polarization. Crucially, the prepared ZIF-91 salt+ showed efficient antibacterial activity against Staphylococcus aureus and Escherichia coli in vitro. Therapeutic effects of the GelMA-ZIF-91 salt+@ATRA MNs patch were verified in a diabetic mouse model with full-thickness cutaneous wounds. A unique MNs patch with antimicrobial, angiogenesis-inducing, and anti-inflammatory properties was designed in accordance with the physiological characteristics of wounds. Collectively, the designed MNs patch based on this multifunctional ZIF-91 salt+ provides new insights into diabetic wound therapy.
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