POLYMER ENGINEERING AND SCIENCE
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2024
·
IF 3.2
Wenlong Ma,Tianxu Hao,Xinya Wang,Wei Zhang,Yonggui Li,Mingxing Chen
In this paper, a high-performance composite nanofiber membrane with excellent air filtration and dye degradation properties was prepared by incorporating MIL-53(Fe) nanoparticles into the electrospinning solution. The results showed that the filtration efficiency for PM2.5 of the PP/PVDF-HFP/MIL-53(Fe) composite nanofiber membrane reached up to 99.3% with the addition of 2 wt% MIL-53(Fe). Moreover, the composite nanofiber membrane exhibited steady filtration efficiency across different parameters, including air velocity, PM2.5 concentration, and extended testing time. Furthermore, the incorporation of MIL-53(Fe) significantly enhanced the removal efficiency of the composite nanofiber membrane toward Rh B, resulting in a remarkable 91% removal rate. The polymer/MOF composite nanofiber membranes prepared by simple and cheap electrospinning technology have a wide range of practical applications in the field of environmental protection. Highlights PPM composite nanofiber membrane was prepared via electrospinning method. MIL-53(Fe) nanoparticles were introduced to PPM composite nanofiber membrane. PPM composite nanofiber membrane showed excellent removal efficiency for PM2.5. PPM composite nanofiber showed a good removal performance for RhB in solution.
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高影响因子
JOURNAL OF FOOD ENGINEERING
·
2025
·
IF 5.8
Sihang Li,Xun Zhou,Jiahao Cui,Xingjian Zou,Zijian Li,Wirote Youravong,Ming Li,Haihua Wang,Zhenyu Li
Residual Alicyclobacillus acidoterrestris severely impacts juice quality. Conventional thermal treatments fail to completely eliminate bacteria and simultaneously cause the loss of heat-sensitive components. Ultrafiltration (UF) has been a nonthermal alternative to conventional thermal process for the sterilization of apple juice. However, membrane fouling, particularly biofouling is an obstacle for deployment of UF in food processing. In order to tackle the challenging issue of membrane biofouling while ensuring food safety, functionalized UF membrane was developed by multi-stage modifications including metal chelator coating and chlorogenic acid-encapsulated MIL-53(Fe) microparticle grafting. The engineered membrane was applied for cold sterilization of apple juice to remove Alicyclobacillus acidoterrestris . Results showed that (i) the engineered membrane could release chlorogenic acid in response to pH stimulation, (ii) the steady state flux of engineered membrane was maintained higher than the pristine membrane after filtration with contaminated apple juice. Only 4.9% viable bacteria were observed on the membrane surface, (iii) the antibacterial mechanism of engineered membrane was mainly due to the disruption of cellular structural integrity and enhanced permeability of cell membranes, which caused the damage to A. acidoterrestris cell, (iv) after filtration, the Fe 3+ concentration in the permeate solution was almost undetectable. The engineered membrane can simultaneously exclude and inactivate A. acidoterrestris in apple juice, while demonstrating excellent anti-adhesion and anti-biofouling properties. Furthermore, the engineered membrane complies with food safety requirements, which verifies that this metal-organic framework modification method has the potential for practical application in food processing.
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CHEMICAL PHYSICS
·
2024
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IF 2
Qian Liu,Panpan Xu,Qianqian Zhang,Guangming Han,Ling Li,Limin Zhou
A series of novel MIL-53(Fe)/CoWO 4 composites were synthesized by combining MIL-53(Fe) and CoWO 4 nanoparticles via solvothermal method. The structural characterizations showed that CoWO 4 nanoparticles were uniformly distributed on the surface of hexagonal bipyramid MIL-53(Fe). Combining XPS and Mott-Schottky plots, a Z-scheme heterojunction was formed between MIL-53(Fe) and CoWO 4 , resulting in a significant improvement in the electron-hole pair separation efficiency. UV–vis diffused reflectance spectra indicated that the optical arrange of MIL-53(Fe)/CoWO 4 composites were expanded to visible light. The photocatalytic degradation experiments under visible light irradiation showed that MIL/CWO-60 synergistically with PMS degraded 90.5 % of TC-HCl within 50 min. The XRD spectra of used and unused composites were identical, indicating good stability in four consecutive cycles. Electron paramagnetic resonance (EPR) and free radicals trapping experiment revealed that active species included O 2− , SO 4 − , h + , OH and 1 O 2 , and mechanism of the synergistic degradation of TC-HCl by MIL-53(Fe)/CoWO 4 composites and PMS was proposed.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shangsong Han,Yong Wang,Binhong Gan,Jun Cai,Siyi Jiang,Cuiyu Huang,Shanshan Li
MIL-53(Fe), as a typical metal–organic framework (MOFs) material, has shown broad application prospects in the field of membrane separation technology due to its advantages such as high specific surface area and good chemical stability. However, few studies have specifically applied it to the preparation of oil–water separation membranes. Therefore, this study innovatively proposed a self-assembly strategy. By constructing a MOFs composite coating covering the membrane surface and a comprehensive metal polyphenol network (MPN), this approach was designed to form an efficient, comprehensive oil-rejection system while significantly enhancing pure water flux. Then, through a series of characterizations and performance tests, the results showed that the prepared composite membrane exhibited excellent oil–water separation performance: pure water flux was as high as 3641.21 L m −2 h −1 , and at the same time, the rejection rate of oil-in-water emulsion was stably maintained at more than 99.58%. Therefore, this study not only successfully verified the great potential of MIL-53(Fe)-based composite membranes in the field of efficient oil–water separation, providing a new theoretical basis and feasible technical path for its design, but also further expanded the practical application prospects of MOFs materials in the treatment of oily wastewater, opening up new ideas for the development of the next generation of high-performance separation membranes.
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高影响因子
TALANTA
·
2025
·
IF 6.1
Luyang Zhao,Yang Song,Guoyang Xie,Hengyi Xu
A colorimetric assay based on the Fe/Al bimetallic organic framework NH 2 -MIL-53(Fe, Al) was developed for the sensitive detection of Escherichia coli O157:H7 ( E. coli O157:H7), a critical pathogen threatening food safety. The framework’s high specific surface area facilitated efficient antibody immobilization, whereas the incorporation of Al 3+ enhanced electron transfer between Fe 2+ /Fe 3+ , thereby significantly boosting peroxidase activity. The optimized NH 2 -MIL-53(Fe, Al) exhibited 1.4-fold and 4.9-fold higher relative absorbance than NH 2 -MIL-53(Fe) and NH 2 -MIL-53(Al), respectively. And it demonstrated 40-fold and 2-fold greater affinity for TMB and H 2 O 2 , respectively, compared to the natural enzyme. By integrating a dual-recognition system based on antibody and aptamer, the method enabled rapid detection with a limit of detection of 10 1 CFU/mL in colorimetric mode. Its successful application in complex matrices, including lettuce, juice, pool water, and chocolate milk, had yielded satisfactory recovery and precision, confirming its promising potential for food safety monitoring.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hui Chen,Wengao Zeng,Yutang Liu,Wanyue Dong,Tao Cai,Lin Tang,Juan Li,Wenlu Li
It is important to find an effective way to enhance the photocatalytic efficiency of metal–organic frameworks. In this work, an organic supermolecule perylene diimide (PDI) semiconductor with a carboxyl terminal was added into the synthesis process of MIL-53(Fe) crystals. The PDI/MIL-53(Fe) (PM) composite photocatalyst was first obtained. The TC-H photodegradation rate of the most efficient 5PM was nearly 94.08% within 30 min, whose apparent reaction rate constant (k) is 4 times that of PDI and 33 times that of MIL-53(Fe), respectively. By investigation and characterization, it has been found that PDI nanofibers were dispersed and fixed in MIL-53(Fe) and bonded to each other by covalent bonds. The radical trap experiments and electron spin resonance analysis illustrated that hydroxyl radical (·OH), superoxide radical (·O2–), and photogenerated holes (h+) were active species. Combined with the band structure of PDI and MIL-53(Fe), it is proposed that the PM photocatalyst was a Z-scheme heterojunction mechanism. Therefore, PM photocatalysts showed excellent charge separation and transfer ability. The performance improvement of 5PM is due to enhanced visible light absorption, efficient charge separation, and excellent redox potential. Five cyclic photocatalytic tests and experiments further demonstrate that the 5PM photocatalyst has a promising future for pollutant removal.
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PubMed
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Bai Yizhuo,Zhang Shiyu,Zhang Kaifan,Li Jiali,Zhang Jiehe,Hao Mingxu,Tao Haisheng
Nitro-functionalized NO 2 -MIL-53(Fe) was synthesized by modifying MIL-53(Fe) to enhance persulfate activation for the degradation of tetracycline (TCN). Comparative studies with NH 2 -MIL-53(Fe) and pristine MIL-53(Fe), it was found that NO 2 -MIL-53(Fe) is categorized as an ideal type I isotherm, without observable hysteresis loop. The introduction of nitro-group incorporation significantly increased specific surface area clocking in at 298.3 m 2 /g and an average pore diameter of 3.3 nm, created uniform micropores, and improved adsorption capacity. Structural characterization confirmed Fe(II) generation and electron transfer in NO 2 -MIL-53(Fe), enabling 82.1% TCN removal within 30 min. Radical (SO 4 ·− , ·OH, O 2 ·⁻ ) and non-radical ( 1 O 2 , charge transfer) pathways synergistically drove degradation, as evidenced by quenching experiments and EPR analysis. ESI-Q-TOF MS identified key intermediates, proposing plausible TCN degradation pathways. This study highlights the potential of nitro-functionalized metal-organic frameworks (MOFs) in advanced oxidation processes, emphasizing their enhanced catalytic activity and performance mechanisms, and provides new ideas for the remediation of pollutants in water bodies. Graphical abstract
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ENERGY & FUELS
·
2021
·
IF 3.605
Jianwen Guo,Jiang Wu,Yu Guan,Jianmin Wang,Qizhen Liu,Xu Mao,Xuemei Qi,Ping He,Huaning Wang
A Z-scheme heterojunction polyhedral-shaped BiOIO3/MIL-53(Fe) photocatalyst is prepared by a solvothermal method. The samples are characterized by XRD, XPS, SEM, TEM, FT-IR, UV–vis, PL, and other material characterization analysis methods. The photocatalytic performance of photocatalysts is studied for removal of vapor-phase mercury (Hg0) under visible-light irradiation. The results suggest that the Hg0 removal efficiency of the BiOIO3/MIL-53(Fe) composite is significantly improved compared with that of MIL-53(Fe). When the molar ratio of BiOIO3 and MIL-53(Fe) is 2:1, the BiOIO3/MIL-53(Fe) composite photocatalyst exhibits the best Hg0 removal efficiency, reaching 74.19%. BiOIO3 and MIL-53(Fe) form a Z-scheme heterojunction with a suitable energy band structure, which results in the effective separation of photoinduced electron–hole pairs and delays their recombination. Finally, the photocatalytic oxidation mechanism of Hg0 by the BiOIO3/MIL-53(Fe) composite is proposed, which paves the way for the study of the built-in electric field and electron transport channels between binary photocatalyst materials.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 5
·2102-2110
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IF 3.288
Shuangyan Meng,Wei Zeng,Mingming Wang,Litong Niu,Shaoping Hu,Bitao Su,Yaoxia Yang,Zhiwang Yang,Qunji Xue
Polydopamine/MIL-53(Fe) (PDA/MIL-53(Fe)) nanocomposite photocatalysts were synthesized with PDA (PDA = polydopamine) and MIL-53(Fe) using a nature-mimicking method. The structures, morphologies, optical properties and thermal stabilities of all the synthesized materials were characterized using a series of methods. In particular, the separation efficiency of photogenerated charge significantly increased after the incorporation of PDA into MIL-53(Fe), which resulted in an elevated photocatalytic activity of PDA/MIL-53(Fe) compared with the control groups. The PDA/MIL-53(Fe) nanocomposite could accelerate the conversion of primary or secondary alcohols into the corresponding aldehydes or ketones with a high specificity by direct hole-involving oxidation under visible-light irradiation and room temperature. The catalysts could be cycled at least three times without a significant decrease in the catalytic activity and this result showed the excellent recyclability and stability of the catalysts.
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高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wen Gao,Fangyuan Wang,Meilin Ou,Qianqian Wu,Lei Wang,Haonan Zhu,Yuanyuan Li,Ning Kong,Jianping Qiu,Shanshan Hu,Shuang Song
The presence of elevated levels of norfloxacin (NOR) in the aquatic environment presents a serious risk to both human health and environmental organisms due to its extremely toxic and persistent characteristics. Herein, a series of Fe/Ti bimetallic composites (NH 2 -MIL-53(Fe/Ti)) were prepared using a one-step hydrothermal method to assess their capability for NOR degradation and investigate degradation mechanisms. It was observed that the well-organized nanosheets interconnected to form chrysanthemum clusters contained a significant number of exposed edges and open pores, which facilitated the enrichment of NOR. Notably, the optimum NH 2 -MIL-53(Fe/Ti) (1.5:1) demonstrated excellent degradation performance for NOR under visible light, owing to an electronic interaction between Fe 3+ and Ti 4+ metal centers. Efficient NOR degradation by NH 2 -MIL-53(Fe/Ti) (1.5:1) was achieved at 84.6% after 120 min of irradiation. Furthermore, the NH 2 -MIL-53(Fe/Ti) (1.5:1) maintained excellent reusability and stability even after five cycles tests. Active species trapping experiments confirmed that the pivotal role of •O 2 − and h + in photodegradation of NOR pollutants. A plausible photocatalytic mechanism was suggested according to various performance characterization and experimental results. Defluorination and ring opening were the main degradation pathways. This work advanced our understanding of photogenerated carriers transfer and energy conversion in bimetallic MOFs . Additionally, a novel strategy was presented for visible light catalytic degradation of NOR, which were highly relevant for the field of environmental treatment.
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高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 31
·10662-10671
·
IF 4
Dan Wen,Yan Ma,Guomei Mu,Qiuping Huang,Xuefeng Luo,Dunmin Lin,Chenggang Xu,Fengyu Xie,Guangzhao Wang,Wenhan Guo
Improving the efficiency of the anodic oxygen evolution reaction (OER) is important to solve the global energy crisis and greenhouse gas emission problems. In this paper, a preparation method for a MIL-53(Fe)@ZIF-67(Co) composite electrode is proposed. The hierarchical structure formed by the combination of MIL-53(Fe) and ZIF-67(Co) provides a rich channel for the transport of electrons and mass in the OER process. XPS analysis and DFT calculations revealed that Fe electrons in MIL-53(Fe) were transferred to Co in ZIF-67(Co) through O, which confirmed the rapid charge transfer effect of this transport channel. The MIL-53(Fe)@ZIF-67(Co) electrode has significant OER performance. When the current density reaches 10 mA cm−2, the overpotential is only 193 mV. This study inaugurates a new way for the rational design of a multiphase interface and the construction of new MOF channel structures.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2024
·
IF 5.9
Fuhao Gan,Chunmei Gao,Shifeng Ji,Yunqing Xing,Tianming Gong,Lihui Tian,Yiming Bai,Zhuolong Wu
In this study, the iron-based metal–organic framework MIL-53(Fe) was successfully prepared by a solvent method and used as a photocatalyst for the efficient degradation of DDBAC under visible light. The morphology, structure and photocatalytic properties of MIL-53(Fe) were investigated by SEM, XRD, XPS and UV–vis DRS characterization methods. The optimum conditions for the degradation of DD pathways of DDBAC were analyzed in combination with DFT calculations. Based on molecular orbital theory and free radical quenching experiments, it was demonstrated that hydroxyl radicals were the main contributors in the oxidative degradation of DDBAC. The toxicity of DDBAC and its intermediates was evaluated by culturing Chlorella vulgaris, and the results showed that the Vis/MIL-53(Fe)/H 2 O 2 system was capable of solution detoxification.
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