WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 15
·1-24
·
IF 3
Zang Shuyan,Wang Shuai,Li Xue,Chen Xinru,Wang Qian,Wang Juan
The removal of both organic and inorganic arsenic is crucial for safeguarding the environment and human health, which constitutes a key aspect of sustainable development. In this study, a novel method integrating Fenton oxidation with ZIF-8 adsorption was developed for the simultaneous treatment of roxarsone (ROX) and arsenite (As(III)) from wastewater. ZIF-8 was hydrothermally synthesized and characterized using X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Elemental Mapping (EM), Brunauer–Emmett–Teller (BET) surface area analysis, and zeta potential analysis. Comprehensive characterization demonstrated that the synthesized ZIF-8 exhibited a well-defined rhombic dodecahedral morphology with smooth crystal surfaces and an exceptionally high specific surface area of 1836.23 m 2 /g. Under the optimized conditions for Fenton oxidation (4.90 mmol/L H 2 O 2 , 0.1380 g/L FeSO 4 ·7H 2 O, pH 3, 30 min) and ZIF-8 adsorption (0.1 g/L ZIF-8, pH 6, 180 min, 25℃), the integrated system exhibited remarkable removal efficiencies of 92.32% for ROX (20 mg/L) and 95.16% for As(III) (1 mg/L). Specifically, compared to the individual processes, the removal efficiency of ROX was increased by 20.59% (versus Fenton-only) and 52.63% (versus ZIF-8-only), while that of As(III) was enhanced by 29.17% and 35.51%, respectively. Additionally, the integrated system exhibited maximum adsorption capacities of 107.76 mg/g for ROX and 17.70 mg/g for As(III), further confirming the presence of synergistic effects between Fenton oxidation and ZIF-8 adsorption. The adsorption processes for ROX and As(III) followed pseudo-second-order kinetics and were best described by the Langmuir adsorption model, suggesting chemisorption and monolayer adsorption on a homogeneous surface. The removal mechanism in the synergistic method involved three primary pathways: oxidation reactions (•OH), electrostatic interactions (-OH/-NH 2 ), and precipitation (FeAsO 4 ). This study demonstrates that the proposed synergistic method (Fenton@ZIF-8) is a promising technology for the simultaneous removal of both organic and inorganic arsenic species from contaminated water, with strong potential for practical application in wastewater remediation.
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RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2025
·Vol. 95
·期 9
·2457-2467
·
IF 0.8
Sun Yanhua,Kong Xiangyang,Xi Shuoyan,Xu Zhuoyue,Zhang Yuhan
Salvianolic acid (SAB) is a natural flavonoid compound possessing significant pharmaceutical value. However, the extraction and purification of SAB from natural products are hindered by the complexity and low concentration of matrix components. In this research, a new surface imprinted polymer with core-shell structure, denoted as ZIF-8@MIPs, was successfully developed using porous metal-organic frameworks (MOF) ZIF-8 as the scaffold. ZIF-8@MIPs exhibited remarkable selective extraction and enrichment of SAB from Salviorrhiza . Series of characterizations and adsorption experiments demonstrated that ZIF-8@MIPs possessed a typical core-shell octahedral structure with a high specific surface area. The resultant high-density imprinted sites allowed the ZIF-8@MIPs to exhibit a high adsorption capacity (46.7 mg/g) and exceptional selectivity (IF = 3.11) for SAB, while achieving adsorption equilibrium within 90 min. Notably, the ZIF-8@MIPs maintained an adsorption capacity of 89.2% for SAB after 7 cycles of adsorption-desorption experiments, indicating good reusability. Furthermore, a solid-phase extraction column was established utilizing the ZIF-8@MIPs as the adsorbent, and the content of SAB in the Salviorrhiza extract was determined by combining this with HPLC. The spiked recovery rate ranged from 87.70 to 92.90%, with RSD of 2.87–3.43%, demonstrating the reliability and reproducibility of this method. In conclusion, the ZIF-8@MIPs developed in this study offer a promising approach for the selective extraction of active flavonoids from natural matrices, with potential application in application prospects.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yunfei Tang,Mengmeng Xiao,Tongtong Duo,Xiaowan Zhang,Ziyue Chen,Wei Wei
The abnormal expression of monoamine oxidase B (MAO-B) and the soluble oligomer (Aβo) formed by β-amyloid deposition play key roles in the pathogenesis of Alzheimer’s disease. However, the simultaneous detection of MAO-B and Aβo remains a huge challenge. Herein, a bimetallic core–shell probe ZIF-8 embedding rhodamine 6G (Au/Rh6G/Pd@ZIF-8) with peroxidase-like activity is designed to detect MAO-B and Aβo simultaneously. MAO-B catalyzes the substrate phenethylamine (PEA) to produce H2O2, which oxidizes thiamine with the catalysis of Au/Rh6G/Pd@ZIF-8 to produce a fluorescent product that emits a strong fluorescence at 440 nm. When Aβo is present in the system, due to the specific coordination between Aβo and Zn2+, the intact ZIF-8 structure collapses, leading to Rh6G release and fluorescence recovery. The simultaneous determination of MAO-B and Aβo by Au/Rh6G/Pd@ZIF-8 is realized. The results showed that the designed biosensor had high specificity and sensitivity, a wide detection range, and a low detection limit for MAO-B and Aβo simultaneous detection. Fluorescence signals for MAO-B and Aβo detection did not interfere with each other because they are excited separately, which provides more valuable data for the diagnosis of Alzheimer’s disease.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Ning Liu,Jie Wang,Huiyu Yang,Fan Cheng,Shuguang Bi,Guoliang Liu,Ying Ou,Hai Liu,Chunli Gong
In order to improve the proton conductivity, CH 3 OH barrier performance and long-term durability of proton exchange membranes in direct methanol fuel cells (DMFCs), herein, a novel functional nanofiber substrate (IL-ZIF-8@PVDF) was prepared by in situ growing metal-organic framework (ZIF-8) on poly(vinylidene fluoride) (PVDF) nanofibers, followed by modification with ionic liquid (IL) containing sulfonic acid groups. PVDF nanofibers can provide flexible mechanical support for ZIF-8, thereby effectively solving the processing difficulties of ZIF-8 caused by its brittleness. Further IL modification of ZIF-8 can not only increase the compatibility between ZIF-8@PVDF and the filling polymer, but also utilize the continuous PVDF nanofiber network to establish long-distance continuous H + transport pathways within the membrane. The as-prepared sulfonated poly (ether ether ketone) impregnated IL-ZIF-8@PVDF composite membrane showed a very high proton conductivity of 161.92 mS cm −1 (80 °C). Meanwhile, the presence of nanofiber backbone and ZIF-8 inside the membrane effectively limited the swelling and methanol permeation. The peak power density (PPD) of the DMFC output equipped with the membrane is up to 114.86 mW cm −2 (2 M methanol, 80 °C), 1.28 times that of the commercial Nafion 211. The durability test suggested that the composite membrane assembled DMFC possessed excellent open circuit voltage stability (only 6.3 % attenuation after 320 h of continuous testing). This work provides a new design idea for PEMs for DMFCs.
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Inorganics
·
2026
·Vol. 14
·期 2
·43
·
IF 3
Huili Ren,Chenxia Gao,Siqi Huang,Libo Du,Shuang Liu,Xi Cao,Yuguang Lv
The proliferation of antibiotic resistance urgently demands the development of novel non-antibiotic-dependent antimicrobial strategies. Metal–organic framework material ZIF-8, with its tunable structure and excellent biocompatibility, shows great promise in the field of photocatalytic antibacterial applications. However, pure ZIF-8 suffers from limitations such as a narrow light absorption range and high carrier recombination rates. Doping ZIF-8 with transition metals such as cobalt or copper, herein denoted as M-ZIF-8 (M=Co, Cu), can significantly broaden its photoresponsive spectrum, promote reactive oxygen species (ROS) generation, and enable controlled metal ion release, thereby enhancing antimicrobial performance. Nevertheless, the release of metal ions also introduces potential biotoxicity concerns, limiting practical applications. This paper systematically reviews the trade-off between the photocatalytic antibacterial mechanism and biotoxicity of metal-doped M-ZIF-8 (M=Co, Cu), focusing on material design principles, antibacterial pathways, toxicity manifestations and mechanisms, as well as optimization strategies for “enhancing efficacy while reducing toxicity.” It further proposes future research challenges and directions in mechanism elucidation, smart material development, standardization, and industrialization to advance the safe and efficient application of these materials in medical and environmental fields.
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JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Hui You,Xiang Xu,Wencan Luo,Lancai Long,Jun Du,Shunmin Yi,Wanyu Liu
The development of reverse osmosis membranes that simultaneously achieve high water permeability and excellent salt rejection is an urgent yet challenging goal for sustainable desalination. Two-dimensional (2D) nanofillers offer a promising pathway to break the inherent trade-off by creating fast water-transport channels. Herein, we engineered a high-performance thin-film nanocomposite (TFN) membrane by incorporating lamellar zeolitic imidazolate framework-8 nanosheets (ZIF-8 NSs) into the polyamide selective layer. The ZIF-8 NSs, synthesized via a facile surfactant-directed approach, possess an ultrathin thickness of ∼5.5 nm and a large lateral size of ∼0.75 μm. When embedded at an optimal loading, the TFN membrane demonstrates a remarkable water permeability of 9.83 L m −2 h −1 MPa −1 , which is ∼37% higher than the pristine thin-film composite (TFC) membrane, while maintaining a high Na 2 SO 4 rejection of 97.9%. This superior performance, significantly surpassing that of membranes filled with conventional ZIF-8 nanoparticles, is attributed to the synergistic effect of the molecular-sieving function of intrinsic ZIF-8 pores and the low-resistance nanochannels formed by the interlayer galleries between the well-dispersed nanosheets, which concurrently facilitate a more cross-linked polyamide network. This work provides a viable and scalable strategy for using 2D MOF nanosheets to design advanced separation membranes.
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CARBON
·
2026
·
IF 12.7
Jiale Ma,Ying Huang,Hanjie Huang,Xiaoxiao Zhao,Huiyang Jiang,Qianqian Niu,Chenbo Liu,Meng Zong
The rapid development of modern communication technology has exacerbated electromagnetic pollution, creating a strong demand for high-performance electromagnetic wave (EMW) absorption materials. Metal-organic frameworks (MOFs) derivatives are promising candidates owing to their tunable structures and high specific surface areas. However, conventional MOFs-based absorbers still suffer from magnetic component aggregation or insufficient dielectric loss, leading to poor impedance matching and narrow effective absorption bandwidth (EAB). Herein, flexible flower-like non-magnetic ZIF-7-derived nitrogen-doped carbon films were fabricated via electrospinning and controlled carbonization. By regulating carbonization temperature and precursor concentration, the morphology and electromagnetic parameters were optimized. The synergistic effect of the unique flower-like structure and nitrogen doping enhances dielectric loss and optimizes impedance matching. Consequently, ZIF-7-NCF-2 achieves a minimum reflection loss (RL) of −75.50 dB at 2.57 mm and an ultra-broad EAB of 11.36 GHz at 3.35 mm, covering almost the entire X and Ku bands. This work provides a feasible strategy for designing high-performance and broadband non-magnetic MOFs-derived EMW absorption materials.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Rui Sun,Pei Lv,Bingqing Shen,Qian Wu,Yuan Xue,Lin Chen,Weibin Li,Zhenjiang Liu
Imidacloprid (IMI) has potential hazards to human health and honeybees. Herein, we developed a highly sensitive fluorescence polarization immunoassay (FPIA) based on ZIF-8-derived carbon particles (ZIF-8-C) for the detection of IMI in agricultural samples, and studied the effect of different sizes of ZIF-8-derived carbon-antibody conjugates (ZIF-8-C-PDA-mAb) and fluorescence lifetime on the detection sensitivity. The results found that the detection sensitivity of FPIA was related to the particle sizes of ZIF-8-C-PDA-mAb. Under optimized conditions, 220 nm ZIF-8-C-PDA-mAb-based FPIA showed the best limit of detection of 0.46 μg/L, which was 47-fold lower than that of the traditional mAb-based FPIA. The recoveries ranged from 86.75 to 111.75%, with a relative standard deviation below 8.44%. Additionally, FPIA results correlated well with HPLC, with a correlation coefficient of 0.998. This strategy provides a great potential FPIA method for rapid and high-sensitivity detection of pesticides and other small molecule pollutants in environmental and agricultural samples.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Xuefan Yang,Dandan Ruan,Feng Ye,Xinlan Qiu,Sitong Li,Lei Huang,Christos C Zouboulis,Xiaohui Mo,Xiping Jiang,Qiang Ju
Background: Acne Vulgaris (AV) lesions exhibit an acidic, sebum-rich, and inflammation-prone microenvironment in which conventional minocycline therapy is constrained by the stratum-corneum barrier and systemic exposure. Here, we present the fabrication and application of dissolvable silk fibroin microneedles encapsulating minocycline-loaded zeolitic imidazolate frameworks (Mino@ZIF-8/SF MNs) to achieve sebaceous gland-targeted, pH-responsive delivery and multimodal therapy. Results: The Mino@ZIF-8/SF MNs display uniform conical morphology, excellent mechanical robustness (peak failure force ≈ 0.4 N per needle), rapid dissolution (< 1 min), high drug loading (≈ 40.11%) and encapsulation efficiency (≈ 70.2%), and negligible hemolytic activity. Under mildly acidic conditions (pH 5.5), minocycline release was markedly accelerated compared to physiological pH 7.4, reflecting the acidified acne microenvironment. Functionally, Mino@ZIF-8/SF MNs achieved > 95% inhibition of Cutibacterium acnes at 30 µg/patch and substantially attenuated sebocyte inflammatory responses. In heat-killed C. acnes-stimulated SZ95 sebocytes, the Mino@ZIF-8/SF MNs downregulated NFKB1, IL-1α, IL-1β, IL-6, IL-8 and MMP9 expression, along with suppression of cytokine-cytokine receptor interaction, IL-17 and NET-associated signaling pathways. RNA-sequencing also suggested that sebocyte metabolism may undergo reprogramming involving enhanced apoptosis, maintenance of mitochondrial oxidative activity, and modulation of PPARγ-related lipid metabolism, which could collectively contribute to reduced lipid droplet accumulation. In a C. acnes-induced acne-like mouse model, Mino@ZIF-8/SF MNs markedly accelerated lesion resolution, reduced lesion elevation, eschar formation, and diameter scores, normalized epidermal thickness, and decreased sebaceous lipid accumulation, while exhibiting no detectable systemic toxicity as confirmed by histology, hematology, and serum biochemistry. Conclusion: Collectively, this study establishes a nanobiotechnology platform that integrates metal-organic frameworks(MOF)-based pH-responsive delivery with antibacterial, anti-inflammatory, and metabolic reprogramming activities, offering a precise and minimally invasive multimodal strategy for sebaceous gland-targeted acne therapy.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2019
·
IF 4.182
Chen Yuan,Pengfei Cheng,Jing Li,Xianlu Gao,Xingsen Gao,Xin Wang,Mingliang Jin,Richard Nötzel,Guofu Zhou,Zhang Zhang,Junming Liu
Zeolite imidazolate frameworks (ZIFs) are a novel kind of zeolite materials with regular porous network structures, belonging to mental-organic frameworks (MOFs). Thanks to their high porosity and large specific surface area , ZIFs could have potential applications in the field of photocatalysis . In this paper, visible light responsive photocatalyst of ZIF-67 was synthesized by a one-step hydrothermal method under a mild condition. We explored three organic dyes in aqueous solutions were degraded under visible light irradiation . And corresponding photocatalytic performances of ZIF-67 with controllable synthetic conditions were evaluated systematically. It was found that ZIF-67(9 h) had the highest degradation efficiency. Besides, the ZIF-67(9 h) were heated in Ar can maintain their crystal structure and microporous form, but exposed more sites to improve photocatalytic activity with partial bond breakage . More than 75% methyl orange (MO), 85% methyl blue (MB) and 54% Rhodamine B (RhB) can be degraded with a 0.5 g L −1 ZIF-67(9 h)(Ar) under visible light irradiation. Moreover, the ZIF-67(9 h)(Ar) demonstrates a strong pH changing tolerance in both acid and alkaline aqueous solutions, the degradations can be well performed in a wide pH range from 3.0 to 11.0.
研究领域:
材料科学
·
光催化
·
环境化学
·
纳米材料
·
化学工程
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ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Hao Zhou,Zhiqiang Zou,Lingmei Dai,Dehua Liu,Wei Du
Enzyme immobilization in hierarchical macro–microporous metal–organic frameworks (MOFs) is greatly desirable but challenging due to the poor stability of MOFs in a practical biocatalysis process. Herein, we prepared a series of single-crystalline ordered macro–microporous zeolitic imidazolate framework-8 (SOM-ZIF-8) with different macropore sizes of 180, 270, and 360 nm for lipase immobilization and investigated their performance in a practical biodiesel production process. Under an ethanol-assisted infiltration strategy, the potential of SOM-ZIF-8 for enzyme immobilization was unleashed from the nonwettability arising from its exceptional surface hydrophobicity, with a significant increase by 123.8% in the loading capacity. However, a fatty acid-induced complete decomposition of ZIF-8 in a nonaqueous system of biodiesel production was observed. To address this challenge, a degradation mechanism coupling the intermolecular autoionization of carboxylic acid was proposed, and a template-assisted pyrolysis approach was adopted to prepare the SOM-ZIF-8-derived carbon material that not only well preserved the 3D-ordered structure of the precursor but also exhibited enhanced chemical stability. Moreover, the carbon derivative exhibited great potential for enzyme immobilization, with a 22.9% increase in loading capacity, a 35.9% increase in specific activity, and a 12.7% increase in activity recovery, compared with SOM-ZIF-8. It is anticipated that this study will shed new light on the realistic design and modification of MOFs for the immobilization of enzymes in biocatalysis and extensive applications.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Jidong Wang,Yating Zhang,Min Dong,Zhaopeng Liu,Binbin Guo,Haipeng Zhang,Liming Gao
Detecting and analyzing circulating tumor cells(CTCs) is significant for early diagnosis, management, and personalized treatment of tumors. Herein, a smart magnetic aptamer modified Fe 3 O 4 @ZIF-8 core/shell structured nanoparticle (NPs) was successfully constructed using for capture and simultaneous pH- and NIR-irradiation responsive release of CTCs. Taking MCF-7 as model CTCs, it could be captured ca. 60 % in low-concentration artificial blood by aptamer (SYL3C) on the surface of Fe 3 O 4 @ZIF-8 NPs. After magnetic separation, the ZIF-8 shell in aptamer-modified Fe 3 O 4 @ZIF-8 NPs carrying captured CTCs would disintegrate within 20 min under the synergistic effect of an acidic environment (pH=6.0) and NIR irradiation leading to the release of CTCs with high cell viability , which was benefited for the subsequent culture and analysis. This magnetic and core/shell structured device integrated high-efficiency capture, quick isolation and perfect release into one system, which showed great potential s for the detection of CTCs in the clinic.
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