FOOD CHEMISTRY
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2023
·
IF 8.8
Huilin Li,Jingying Yang,Ran Han,Yueyao Wang,Xintong Han,Shuo Wang,Mingfei Pan
Rapid, sensitive, specific and stable detection of mycotoxin in food remains an extremely crucial issue. Herein, a magnetic-fluorescent immunosensing platform for the detection of zearalenone (ZEN) was proposed. The platform utilized Au nanoparticles (AuNPs) heterogeneous fluorescent metal–organic framework (MIL-53(Al)@AuNPs) labeled with ZEN-bovine serum albumin (ZEN-BSA) as signal probe and ZEN mono-antibodies coupled with magnetic NPs (MNPs-mAbs) as capture probe. Specifically, the heterogenization of AuNPs on the MIL-53(Al) surface improved its biocompatibility, and facilitated the loading of ZEN-BSA conjugates. The MNPs-mAbs could rapidly capture the target ZEN, simplify the immunoassay process and further improve the detection efficiency. The established competitive magnetic-fluorescent immunosensing platform had a wider linear response to ZEN in the range of 0.001–100 ng/mL with a lower limit of detection (LOD) at 0.0035 ng/mL, and could finish the whole detection process within 20 min, showing great potential for rapid and sensitive detection of food contaminants.
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International Journal of Environmental Research and Public Health
·
2023
·Vol. 20
·期 5
·4571
·
IF 4.614
Shuyan Yu,Huiying Zhang,Congju Li
In this study, MIL-53(Fe) was innovatively incorporated into carbon felt (CF) by growing in-situ using the solvothermal method. MIL-53(Fe)@carbon felt (MIL-53(Fe)@CF) was prepared and used for the degradation of rhodamine B (RhB). As a new photocatalytic membrane, MIL-53(Fe)@CF photocatalytic membrane has the characteristics of high degradation efficiency and recyclability. Influence of various parameters including MIL-53(Fe)@CF loading, light, electron trapper type, and starting pH on RhB degradation were investigated. The morphology, structure, and degradation properties of MIL-53(Fe)@CF photocatalytic membrane were characterized. Corresponding reaction mechanisms were explored. The results indicated that pH at 4.5 and 1 mmol/L H2O2, 150 mg MIL-53(Fe)@CF could photocatalytically degrade 1 mg/L RhB by 98.8% within 120 min, and the reaction rate constant (k) could reach 0.03635 min−1. The clearance rate of RhB decreased by only 2.8% after three operations. MIL-53(Fe)@CF photocatalytic membrane was found to be stable.Keywords:MIL-53(Fe)@carbon felt;photocatalytic;degradation;rhodamine B
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Shuya Liu,Xinjie Ma,Yuxin Liu,Weiwei Chen,Yuejie Ai,Kexin Li,Xiushen Ye,Ming Fang,Xiaoli Tan
To fully utilize the customizable characteristics of metal-organic framework (MOF) materials in environmental applications, it is important to precisely modulate the branching groups of MOFs for improved performance. In this work, MIL-53(Al) was modulated by different numbers of nitrogen atoms and carboxyl groups/phosphite groups (MOF-N 2 -(COOH) 3 , MOF-N 3 -(COOH) 4 , and MOF-N 2 -(PO(OH) 2 ) 3 ) via a post-synthesis modification method, and the influence of functional groups and chain length on adsorption and the mechanism of modified groups on the adsorption of uranium (U) are demonstrated. Batch experiments suggest the removal of U(VI) reaches 37%, 27%, and 90% for MOF-N 2 -(COOH) 3 , MOF-N 3 -(COOH) 4 and MOF-N 2 -(PO(OH) 2 ) 3 , respectively (pH = 4.0, T = 25 ℃, I = 0.01 M NaNO 3 ). The surface complexation between UO 2 2+ and the surface of functional groups on the modulated MOF dominates the adsorption. Nevertheless, the steric hindrance in MOF porous structure can explain the inferiority of U(VI) adsorption on MOF-N 3 -(COOH) 4 (27%) to MOF-N 2 -(COOH) 3 (37%). MOF-N 2 -(PO(OH) 2 ) 3 is more conducive to uranyl adsorption than MOF-N 2 -(COOH) 3 or MOF-N 3 -(COOH) 4 , which is due to better affinity of U(VI) to phosphate group than the carboxyl group by density functional theory (DFT) calculation. Moreover, the excellent regeneration performance and U(VI) adsorption of MOF-N 2 -(PO(OH) 2 ) 3 in natural water or wastewater further confirmed the practical application of modulated MOFs in practical application.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Liyan Chen,Meng Rong,Jiemiao Yu,Qiyu Meng,Shan Ni,Xia Wu,Li Wang,Huifang Xing,Huizhou Liu,Liangrong Yang
Due to the biotoxicity and ecological hazards of 2,4-toluene diamine (TDA) and 4,4′-methylene dianiline (MDA), it is the key process for upcycling polyurethane (PU) waste to remove them from the PU bio-hydrolysate with high selectivity and efficiency. Herein, MIL-53 series metal–organic frameworks (MOFs) were prepared and applied to remove aromatic diamines. Besides, the effects of their different structural units on the adsorption performance were investigated. Among the three metal nodes (Cr 3+ , Al 3+ , Fe 3+ ) of MIL-53, MIL-53(Al) demonstrated the highest adsorption capacities upon TDA (4.17 mmol/g) and MDA (2.00 mmol/g) due to its more μ 2 -OH sites and higher porosity. Compared with MIL-53(Al), DUT-4 and DUT-5 owned longer linkers but exhibited inferior aromatic diamine adsorption performance, which was ascribed to the more appropriate pore size and more μ 2 -OH sites of MIL-53(Al). Notably, MIL-53(Al) exhibited excellent selectivity towards aromatic diamines, while the removal efficiency reached over 90 %. In addition, spectral analysis before and after adsorption revealed the mechanism, which involved host–guest interactions, H-bonding interactions, and π-π stacking. The results indicate the great potential of applying the optimal MIL-53(Al) as an alternative adsorbent for removing hazardous aromatic diamines from the PU bio-hydrolysate.
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LANGMUIR
·
2022
·
IF 4.331
Zhiliang Jin,Xiaohong Li,Teng Li,Youji Li
Graphdiyne (g-CnH2n–2) is a new carbon material composed of sp and sp2 hybrid carbon atoms. Since the synthesis by Li’s team, graphdiyne has been widely studied in other fields because of its excellent properties. In this paper, graphdiyne was synthesized from copper-containing materials and the composite GDY/CuI/MIL-53(Al) S-scheme heterojunction is prepared for photocatalytic cracking of water to produce hydrogen. First, GDY/CuI was prepared by organic synthesis, and then GDY/CuI was anchored on the surface of MIL-53(Al) by in situ ultrasonic stirring. After the continuous optimization of experimental conditions, the final hydrogen evolution rate is much higher than that of MIL-53(Al). This efficient photocatalytic performance can be attributed to the S-scheme heterojunction formed by the unique energy band arrangement. At the same time, the mechanism of charge transfer was demonstrated by in situ irradiation X-ray photoelectron spectroscopy. The strong interaction among the three strongly promotes the separation and transfer of photogenerated electron–hole pairs.
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Energies
·
2022
·Vol. 15
·期 16
·5851
·
IF 3.252
Yong Yao,Shizhu Li,Chuangting Chen,Dongchen Zheng,Zhichao Wu,Chi Yu,Shuying Pu,Fa-Qian Liu
MIL-53(Fe) was prepared and modified with benzoic acid to prepare MIL-53(Fe)-BA additive, which was used to improve the catalytic oxidation rate of sulfite, prevent the scaling of the desulfurization tower, and improve the desulfurization efficiency during the wet flue gas desulfurization (WFGD) process of power plants. MIL-53(Fe)-BA exhibits abundant Lewis acid sites because of the appearance of coordination unsaturated Fe atoms. Due to the excellent sorption capacity, Ca(OH)2was used as the main SO2desulfurizer. The composite desulfurizers were prepared by mixing MIL-53(Fe)-based additives and Ca(OH)2, and were characterized by SEM, XRD, and FT-IR. A desulfurization unit was set up at laboratory scale to study the effect of catalytic oxidation additives on sulfite oxidation and desulfurization efficiency. The results showed that the addition of MIL-53(Fe)-BA can increase the oxidation capacity of sulfite by 159%, and greatly improve the desulfurization efficiency. These composite desulfurizers broaden the adaptability of the desulfurizing system to high-sulfur coals, and provide support for improving the desulfurizing efficiency of power plants.Keywords:catalytic oxidation;oxidative desulfurization;wet flue gas desulfurization;calcium hydroxide;MIL-53(Fe);Lewis acid sites
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
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IF 6.76
Liwei Sun,Meilin Yin,Zhen Li,Shaokun Tang
To alleviate environment issues derived from CO 2 emission, developing effective and economical methods for CO 2 capture has attracted much attention for decades. Metal-organic frameworks possess high porosity and stability, which is favorable to the adsorption of small molecules. Herein, an aluminum-based MOF, aluminum terephthalate [MIL-53(Al)], was synthesized with H 2 O and N , N′ -dimethylformamide as co-solvent via microwave-assisted method for CO 2 adsorption. The parameters including pre-mixing mode, microwave temperature, microwave power and reaction time were varied to study their influences on crystal structure, morphology and CO 2 adsorption capacity of MW-MIL-53(Al). Wherein, MW-MIL-53(Al) prepared with pre-mixing mode of stirring at 130 °C, 200 W and 3 h presents high crystallinity and rod-like morphology. The synthesized MW-MIL-53(Al) possesses relatively high BET surface area (961 m 2 /g), pore volume (0.46 cm 3 /g) and thermal stability (up to 480 °C), and its CO 2 adsorption capacity is 2.16 mmol CO 2 /g adsorbent under 25 °C and 0.1 MPa, which is higher than CS-MIL-53(Al) synthesized via conventional solvothermal method at 130 °C for 48 h.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2020
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IF 7.864
Yi Ren,Mengqi Shi,Weiming Zhang,Dionysios D. Dionysiou,Junhe Lu,Chao Shan,Yanyang Zhang,Lu Lv,Bingcai Pan
A novel Fenton-like catalyst was synthesized by immobilizing nano-Fe2O3 (nFe2O3) on MIL-53(Cu). The pseudo-first-order rate constant of bisphenol A degradation in the nFe2O3/MIL-53(Cu)/H2O2 system reached 0.0123 min–1, while the values in MIL-53(Cu)/H2O2 and nFe2O3/H2O2 systems were only 0.0026 and 0.0040 min–1, respectively. The characterization of nFe2O3/MIL-53(Cu) reveals that the supreme catalytic activity of this material could be ascribed to iron–copper synergy, smaller size, and better dispersion of nFe2O3 particles. Moreover, a method of trapping Cu(I) by neocuproine was developed, which could shield Cu(I) from interacting with iron and H2O2, and thus allow quantitative differentiation of the contribution to the enhanced catalytic activity by each of the factors. Using this method, 19% of the enhancement was determined to be contributed by synergistic effect, while 24% of the enhancement was due to the smaller size and better dispersion of the nFe2O3 particles on MIL-53(Cu) support. In addition, the performance of nFe2O3/MIL-53(Cu) only dropped 10.7% after five treatment cycles in real wastewater, showing good potential in practical application. We believe this study sheds light on the tailored design of Fenton-like catalysts and elucidates the catalytic mechanisms of supported bimetallic catalysts.
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Nanoscale
·
2024
·
IF 5.8
Xinlv Peng,Caixia Pei,Eika W. Qian,Yuguang Du,Jian-Jun Li
6′-Sialyllactose (6′-SL), the most abundant sialylated human milk oligosaccharide, has attracted attention for its potential application in supplementary infant formulas. Herein, we report a facile strategy to construct a cascade bioreactor for the enzymatic synthesis of 6′-SL by co-immobilizing an enzymatic module consisting of CMP–sialic acid synthase and α-2,6-sialyltransferase into hierarchically porous MIL-53 (HP-MIL-53). The as-prepared HP-MIL-53 showed high enzyme immobilization capacity, reaching 226 mg g−1. Furthermore, the co-immobilized enzymes exhibited higher initial catalytic efficiency, and thermal, pH and storage stability than the free ones. Finally, the 6′-SL yield remained >80% after 13 cycles of use. We expect that HP-MIL-53 would have potential industrial applications in the enzymatic modular synthesis of 6′-SL and other glycans.
研究领域:
生物化学
·
食品科学
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材料科学
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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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ANALYTICAL BIOCHEMISTRY
·
2019
·
IF 2.507
Ying Jiang,Qi-Meng Yang,Qiu-Ju Xu,Shi-Yu Lu,Lin-Yu Hu,Mao-Wen Xu,Ying-Shuai Liu
Biothiols play critical roles in many biological processes and their aberrant is related to a variety of syndromes. A simple and reliable colorimetric method is developed in this work for biothiols detection based on an oxidase mimic, a metal organic framework (MOF) MIL-53(Fe), and a peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB). In this design, MIL-53(Fe) is utilized to catalyze the conversion of TMB to a blue colored 3,3′,5,5′-tetramethylbenzidine diimine, which can be read on a spectrophotometer at 652 nm. The oxidation-induced blue color generation can be efficiently inhibited by biothiols, thus a colorimetric analytical method is proposed for biothiols detection based on the above system. Under optimal conditions, a linear relationship in a range from 1 to 100 μM and a limit of detection (LOD) at 120 nM are achieved with Cys as a model target. The developed platform is further applied to evaluate cellular biothiols in normal (RWPE-1) and cancer (LNCap) cell lines, revealing that the overall biothiols level in LNCap is much higher than that in RWPE-1. This work renders a powerful tool for identifying cancer cells in a simple manner for biomedical diagnosis associated with biothiols.
研究领域:
材料科学
·
分析化学
·
纳米技术
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生物医学诊断
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生物无机化学
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ChemCatChem
·
2026
·Vol. 18
·期 5
·e70662
·
IF 4.1
Mengjiao Yu,Xiong-Fei Zhang,DongEn Zhang,Jianhao Qiu,Jianfeng Yao
The development of stable, efficient catalysts for fructose conversion to 5-hydroxymethylfurfural (5-HMF) remains a challenge. While sulfonation enhances Brønsted acidity in metal–organic frameworks (MOFs), it often compromises their structural integrity. This work addresses the critical challenge by demonstrating that amino (–NH 2 ) functionalization in MIL-53(Al) acts as a stabilizer, enabling the framework to withstand direct modification with chlorosulfonic acid and facilitating the introduction of sulfonic acid groups. The resulting sulfonated catalyst, MIL-53-N/S(1), achieves an outstanding 5-HMF yield of 84.3% in a biphasic system (170°C, 6 h). This work underscores the dual role of amino functionalization in stabilizing MOFs and enabling efficient acid catalysis for biomass conversion. Graphical A strategy using amino-functionalized MIL-53(Al) was proposed, where pre-grafted –NH 2 groups facilitate effective sulfonation to create abundant –SO 3 H sites without compromising framework stability. This approach addresses the challenge between acidity and structural degradation of MOFs. Under optimized conditions, MIL-53-N/S(1) achieves an HMF yield of 84.3%, demonstrating its potential for practical biomass valorization.
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