JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Yu-Xuan Zheng,Xuwen Wu,Wei-Guang Yang,Bai-Xue Li,Kejing Gao,Jingsheng Zhou,Yunfang Liu,Dongzhi Yang
Radioactive nuclides and highly toxic organophosphates are typical deadly threats. Materials with the function of radioactive substances adsorption and organophosphates degradation provide double protection. Herein, dual-functional polyamide (PA)/polyethyleneimine (PEI)@Zr-MOF fiber composite membranes, fabricated by in-situ solvothermal growth of Zr-MOF on PA/PEI electrospun fiber membranes, are designed for protection against two typical model compounds of iodine and dimethyl 4-nitrophenyl phosphate (DMNP). Benefiting from the unique core-sheath structure composed of inner nitrogen-rich fibers and outer porous Zr-MOF, the composite membranes rapidly enrich iodine through abundant active sites of the outer sheath and form complexes with the amine of inner PEI, exhibiting a highly competitive adsorption capacity of 609 mg g −1 . Moreover, it can adsorb and degrade DMNP with the synergy of PEI component and Zr-MOF, achieving an 80 % removal of DMNP within 7 min without any additional co-catalyst. This work provides a feasible strategy to fabricate dual-functional materials that protect against radioactive and organophosphorus contaminants.
研究领域:
材料科学
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放射化学
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环境科学
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DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 8
·1-19
·
IF 3
Ou Qianhui,Xiong Yan,Chen Li,He Deyong,Zhou Chuxiang,Wang Lan
The nanocomposite materials are highly promising candidates for adsorption applications in dyed wastewater due to their distinctive structural properties. In this work, the nanocomposite hybrids of UiO-66@GO were first synthesized by specifically anchoring Zr-based metal organic framework (MOF) of UiO-66 onto graphene oxide (GO) nanolayer through solvothermal method. Then the composite matrix microspheres (CMMs) of UiO-66@GO were subsequently prepared by embedding the obtained UiO-66@GO nanocomposite into sodium alginate (SA) microspheres through self-assembly cross-linking process. Finally, the prepared UiO-66@GO CMMs were applied for the adsorption of organic dye pollutant and showed efficient water purification performance. As a result, the UiO-66@GO CMMs exhibited selective cationic dye adsorption for Rhodamine B (RhB + ). The experimental results revealed that the adsorption kinetics followed by the pseudo-second-order (PSD) model with rate constant k 2 = 0.95 × 10 –3 g mg −1 min −1 , and the thermodynamics followed by the Langmuir model with adsorption capacity of 345.66 mg mg −1 . Notably, the UiO-66@GO CMMs demonstrated excellent adsorption removal of a significant removal efficiency of 98% towards 10 ppm Rh-B and a rapid adsorption response time of ~ 5 min. Meanwhile, the UiO-66@GO CMMs maintained long-term stability with adsorption efficiency > 95% over 30 days and effective reuse with resorption efficiency > 90% using DMF-H₂O as eluent. In this study, SA has served as a porous supporting matrix to immobilize UIO-66@GO nanoparticles, having mitigated issues of aggregation and leaching common to nanoscale adsorbents while improving reusability. The synergistic effect between UIO-66 and GO has further enhanced pollutant adsorption capacity, demonstrating significant potential for dye wastewater treatment applications.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
·
IF 7.7
Qing Kang,Tong Lin,Jingbo Jiao,Yidi Liu,Yurong Guo,Chenjing Ma,Xinjun Du,Shuo Wang
Salmonella typhimurium ( S. typhimurium ) contamination has become the main source of foodborne diseases and has substantial effects on human well-being. Herein, we present a nucleic acid-responsive colorimetric biosensor for ultrasensitive detection of S. typhimurium , integrating a multifunctional Fe 3 O 4 @Zr-MOF/GOx nanoprobe with exponential amplification reaction (EXPAR). The system integrates glucose oxidase (GOx) encapsulated within a Zr-based metal-organic framework (Zr-MOF) modified with magnetic Fe 3 O 4 nanoparticles. In the presence of S. typhimurium , the EXPAR reaction is triggered, and the controlled release of GOx is achieved by DNA strand displacement. The detection mechanism leverages GOx-catalyzed glucose oxidation to generate H 2 O 2 , which oxidizes 3,3’,5,5’-tetramethylbenzidine (TMB) for colorimetric signal readout. The biosensor demonstrates high specificity for S. typhimurium , with a detection limit of 2.26 CFU mL⁻¹ , and practical applicability in spiked milk samples, achieving recoveries of 89.6–111.5 %. The strategy employing stimuli-responsive DNA/MOF composites demonstrated significant potential in food quality monitoring and analysis.
研究领域:
微生物学
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食品安全
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生物传感器
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分子诊断
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纳米生物技术
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分析化学
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Ying Wang,Liya Zhang
In recent years, with the misuse and uncontrolled release of antibiotics, the detection of antibiotics has become an important area of research in analytical chemistry. This work utilizes the self-polymerization property of dopamine in alkaline solution to synthesize polydopamine-coated Zr-MOF composites (Zr-MOF-PDA) using zirconium-based metal-organic framework (Zr-MOF) of ligand 4-carboxyphenylporphyrin as the carrier material. The electrochemical sensor for highly sensitive detection of amoxicillin (AMO) was successfully constructed by drop coating this compliant material on the surface of glassy carbon electrode. The AMO was detected by differential pulse voltammetry under the optimized experimental conditions. The linearity range was 0.25~90 μM, and the detection limit was 71 nM. The sensor was successfully used to determine AMO in river water and tap water samples with good recovery. The proposed sensor provides a feasible solution for the sensitive detection of AMO.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
FOOD CHEMISTRY
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2023
·
IF 8.8
Yijian Zhao,Meiyi Liu,Shuai Zhou,Zhiyu Yan,Jingsheng Tian,Qiaojuan Zhang,Zhiyi Yao
Accurate on-site analysis of tetracycline (TC) is of great research value for ensuring food safety and estimating environmental pollution. Herein, a smartphone-based fluorescent platform for TC detectionhas been developed based on a europium functionalized metal–organic framework (Zr-MOF/Cit-Eu). Based on the inner filter and antenna effect between Zr-MOF/Cit-Eu and TC, the probe exhibited a ratiometric fluorescent response toward TC, resulting in an emission color change from blue to red. Excellent sensing performance was achieved with a detection limit of 3.9 nM, consistent with the linear operation spanning nearly four orders of magnitude. Subsequently, visual test strips based on Zr-MOF/Cit-Eu were prepared, possessing the potential for accurate testing of TC via RGB signals. Finally, the proposed platform was well applied in actual samples with satisfied recoveries (92.27 to 110.22%). This MOF-based on-site fluorescent platform holds great potential on constructing intelligent platform for visual and quantitative detection of organic contaminants.
研究领域:
分析化学
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食品安全
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环境科学
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产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2020
·
IF 4.872
Ying Su,Sicen Wang,Nan Zhang,Ping Cui,Yan Gao,Tao Bao
Phenoxy herbicides are widely applied in agricultural weeding. The determination of herbicides is important in environmental protection, agricultural production, food safety, and public health. In this study, a facile and efficient analytical method was proposed for the trace detection of phenoxy herbicides in soil, cucumber, and tap water samples by coupling pipette tip solid phase extraction (PT-SPE) with high performance liquid chromatography . UiO-66-funtionalized cotton ( [email protected] ) was packed into pipette-tip as sorbent to fabricate extraction device. The modification of UiO-66 on cotton fiber was confirmed using scanning electron microscope , Fourier transform infrared spectroscopy , and X-ray diffraction. The main factors affecting the adsorption of [email protected] for four phenoxy herbicides were evaluated by response surface methodology in detail. Under optimized conditions, [email protected] displayed excellent properties in the extraction of phenoxy herbicides with good peak shape. Linear ranges of 4-chlorophenoxyacetic acid, dicamba, 2,4-dichlorophenoxyacetic acid, and 2-(2,4-dichlorophenoxy) propionic acid were 1.4–72 μg/L, 5.6–280 μg/L, 2.8–140 μg/L and 3.2–160 μg/L (RSDs < 6.3%), respectively. The recoveries were between 83.3 and 106.8% with RSDs <6.7%, with detection limits ranging from 0.1 μg/L to 0.3 μg/L. The results show that [email protected] in PT-SPE is an effective method for monitoring phenoxy herbicides in complex samples.
研究领域:
环境科学
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分析化学
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农业化学
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食品安全
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Miaomiao Tian,Haochen Shen,Cheng Chen,Libo Zhao,Wei Yu,Bisheng Li,Leihong Zhao,Hongjun Lin,Liguo Shen
A controllable secondary growth repairs stress cracks in MOF membranes. • Capillary-driven precursors enable in situ nucleation and epitaxial crack healing. • Post-healing generates dense, crack-free, hydrophilic and charged layers. • Repaired membranes achieve high rejection and ultrahigh water flux simultaneously. • XDLVO analysis shows that repulsive interactions improve membrane antifouling. Metal–organic framework nanosheet membranes are promising for next-generation separations but remain limited by stress-induced cracking during fabrication and operation, which compromises structural integrity and separation reliability. Here we report a secondary growth strategy to heal cracks in membranes assembled from two-dimensional Zr-MOF nanosheets while enhancing structural robustness and separation performance. Capillary forces draw precursor solutions containing metal ions and organic linkers into preexisting stress-induced cracks. The subsequent secondary growth infills these defects, healing the cracked regions and restoring a dense, continuous selective layer. This post-fabrication repair strengthens intercrystalline connectivity without introducing thick sealing layers that impede water transport, thereby recovering both high solute rejection and permeability. Crack healing and membrane densification are achieved at an optimal nanosheet loading, whereas excessive loading leads to stress accumulation and renewed structural instability. The optimized membranes exhibit a continuous crack-free selective layer with increased thickness, enhanced hydrophilicity, and a higher negative surface charge. Compared with the primary Zr-MOF membrane (P-Zr-MOF), the repaired membrane (SG-Zr-MOF) achieves a tannic acid rejection of 96.8% with a water flux of 481.9 L m −2 h −1 bar −1 , together with improved mechanical flexibility and antifouling performance. This strategy couples defect repair with performance enhancement and provides a practical route for developing stable and efficient MOF membranes for sustainable water treatment. Download: Download high-res image (190KB) Download: Download full-size image
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DOI
高影响因子
Applied Materials Today
·
2026
·
IF 7
Junjian Yu,Xiangwei Li,Zhe Wang,Xiang Pei,Zetong Fan
Cu ions were introduced into defect sites of UiO MOF via post-functionalized modification. • The Cu-functionalized defective MOF synergistically improved gas separation performance of MMM under high pressure. • Experiments/simulation revealed the CO2 transport pathway, offering a new defect-engineered MOF design idea for separation. The incorporation of defect engineering in a metal-organic framework to prepare advanced MOF/Polymer mixed matrix membranes for CO 2 separation has become a new direction. However, the existence of defect engineering inevitably loses the selectivity enhancement of specific gas pair separation performance while opening the convenient door for gas diffusion. Herein, introducing Cu ions towards the UiO MOF defect to prepare functionalized defective UiO MOF materials. The Cu ions with CO 2 affinity maximize the proportion at the interface with the zirconia node, thus giving the material a higher CO 2 absorption capacity at high pressure. The prepared mixed matrix membranes (Cu/UiO-H 2 O/Pebax) break through the "trade-off" effect under high pressure (580.0 psi) and realize the synergistic improvement of CO 2 permeability and selectivity. Compared with low pressure (14.5 psi), the CO 2 permeability of Cu/UiO-H 2 O/Pebax mixed matrix membranes increased nearly two times, and the CO 2 /N 2 selectivity increased nearly 3.5 times. A thorough combined permeation test experiment/simulation characterization revealed the influence of the CO 2 transport pathway within the membrane, indicating the mechanism of Cu/UiO-H 2 O fillers on the permeability of mixed matrix membranes at high pressure. Notably, the post-functionalized of mixed matrix membranes with defect-engineered MOF materials provides a new idea for designing defect-engineered MOF materials in the separation field. Download: Download high-res image (247KB) Download: Download full-size image
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DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-10
·
IF 5.3
Yang Juanli,Chen Xingnu,Ji Yi,Tan Mengyuan,Hu Qin,Gao Lu,Zheng Kaiyi,Yang Zhen-quan,Li Xin,Xu Xuechao
Staphylococcus aureus , a prevalent foodborne pathogenic bacterium, poses a significant threat to human health. Herein, a dual-mode sensing method is proposed for detecting S. aureus in food using aptamer-modified Fe/Zr metal organic framework (Apt@Fe/Zr MOF). The Apt@Fe/Zr MOF was prepared through self-assembly of Fe/Zr MOF followed by surface modification with an aptamer. It exhibits peroxidase-like activity, catalyzing the 3,3′,5,5′-tetramethylbenzidine (TMB) chromogenic reaction. Meanwhile, Apt@Fe/Zr MOF demonstrates fluorescent characteristics, emitting a fluorescence signal at 428 nm upon excitation with light at 350 nm. Based on this feature, dual-mode sensing of S. aureus with comparable specificity and excellent anti-interference was achieved through the integration of colorimetry and fluorometry. The limits of detection (LOD) for both colorimetric and fluorometric analyses were 3.25 × 10 1 and 1.47 × 10 1 CFU mL −1 , respectively. Actual detection of food samples indicates that this method exhibits excellent reliability and accuracy, with recoveries ranging from 91.12 to 107.55% (colorimetry) and 94.40 to 109.47% (fluorometry). The results are highly consistent with those obtained from traditional culture-based methods. Therefore, it is evident that the dual-mode detection of S. aureus using Apt@Fe/Zr MOF offers a rapid and reliable method for ensuring food safety. Graphical
研究领域:
食品科学
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生物传感
·
纳米技术
·
微生物学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Chen Wang,Guo Lin,Jiling Zhao,Shixing Wang,Libo Zhang,Yunhao Xi,Xiteng Li,Ying Ying
A novel adsorbent (UiO-66-TA) was presented by modifying metal-organic framework composites with thioctic acid. UiO-66-TA were characterized by fourier transform infrared (FT-IR), field emission scanning electron microscopy (FESEM), thermogravimetric (TG), Brunner-Emment-Teller (BET) measurement and X-ray photoelectron spectroscopy (XPS), which indicating that it had excellent morphology and specific surface area. The adsorption performances of UiO-66-TA for Au(III) were studied. The results showed that UiO-66-TA had a strong adsorption capacity under acidic conditions and the optimal pH was 2.0. Isotherm and kinetic adsorption were also conducted and found that the experimental values correspond to Langmuir model and pseudo-second-order isotherm model, indicating that the mechanism is mainly chemical adsorption on a uniform surface. Wastewater experiment showed that UiO-66-TA can be used for highly selective recovery Au(III) in actual life. The regeneration and thermodynamic experiments indicated that UiO-66-TA can be reused and were a spontaneous endothermic process. XPS analysis and the zeta potential proved that the main adsorption mechanisms were ion exchange and chelation. DFT calculation found that there are two ways to combine Au with S on UiO-66-TA and their distances are 2.38 Å and 2.39 Å, indicating that the gold and sulfur play a major role in chelation. In summary, UiO-66-TA was a hopeful adsorbent and could be used to collect gold ions from wastewater in a sustainability perspective.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
TALANTA
·
2015
·
IF 3.545
Xianying Wang,Chunhui Deng
In this work, a simple method for the extraction and analysis of bisphenols in environmental samples was presented. And the prepared zirconium-based magnetic MOFs (magG@PDA@Zr-MOF) were used as the sorbents for the magnetic solid-phase extraction. With the simple solvothermal reaction and sol–gel method, the prepared material showed great characteristics of large surface area, homogeneous pore size, good magnetic responsivity and super-hydrophilicity. The large surface area provided abundant sites to extract target compounds; the magnetic property could simplify the whole extraction procedure; and the hydrophilicity improved the dispersibility of the material in matrix. Here, various extraction parameters were optimized, including amounts of sorbents, adsorption time, species of elution solvents and desorption time. The whole extraction procedure could be accomplished in 30 min. And under the optimized conditions, method validations were also studied, such as linearity, the limit of detection and recovery. Finally, the prepared material was used in real water samples. The results showed this material had good potential as the sorbent for the extraction of targets in environmental water samples.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Mengmeng Zhang,Jiaying Lou,Rui Xu,Peng Li,Yunfei Sha,Hui Zhang,Yu Jia,Zhenxia Chen,Da Wu,Yun Ling,Yaming Zhou
Metal-organic frameworks (MOFs) featuring a fcu-type net based on 12-connected [Zr 6 (μ 3 -O) 4 (μ 3 -OH) 4 ] cluster have received considerable interest for the fundamental investigation of structure-property relationships in a wide range of catalytic reactions . In this work, the bipyridine (bpy) chelate group was introduced into the fcu-type framework of UiO-67, giving UiO-67bpy as the catalyst support. Then, FeCl 3 was post-synthetically anchored to the bpy group, resulting into the isolation of FeCl 3 /UiO-67bpy. Catalyzed hydrolysis of 5-hydroxylmethoxyfurfural (HMF) into levulinic acid (LA) was then explored and revealed that it can efficiently and selectively catalytic convert HMF into LA, which is superior to that of FeCl 3 /UiO-67 where FeCl 3 is encapsulated in the cage of UiO-67 and dispersed on the pore surface. The recyclability studies further confirmed the importance of anchored FeCl 3 where there is no significant decrease in catalytic activity as compared with that of FeCl 3 /UiO-67. Taking the detailed textural porosity and catalytic results of isomorphous structures in consideration, our studies revealed that narrowing the pore size with anchored FeCl 3 on the skeleton of the fcu-type Zr-MOF rather than encapsulating FeCl 3 inside the cage is more favored for the rehydration reaction of HMF to LA.
研究领域:
化学
·
材料科学
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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）