ANALYTICA CHIMICA ACTA
·
2018
·
IF 5.123
Sandip Mondal,Jianqiao Xu,Guosheng Chen,Siming Huang,Chuyu Huang,Li Yin,Gangfeng Ouyang
Antibiotics are a group of antibacterial drugs used in the treatment and prevention of bacterial diseases in humans, veterinary animals, and farmed fish. Inappropriate and excessive use of antibiotic therapy leads to antibiotic fragment in the water bodies thus affect the aquatic organisms . In this study, an amino group modified high surface area metal-organic framework (MOF) MIL-101(Cr)-NH 2 was used to prepare solid-phase microextraction (SPME) fiber to detect four different classes (total 6 ABs) of antibiotics for the first time from living tilapia fish ( Oreochromis mossambicus) by coupling SPME with high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). The extraction efficiencies of the custom-made fiber were superior as compared with the commercial C18, polydimethylsiloxane (PDMS), PDMS/divinylbenzene (DVB) and polyacrylate fibers. The custom-made fiber also exhibited excellent reproducibility with the low intra-fiber relative standard deviations (RSDs 1.5%–8.3%) and inter-fiber RSDs (7.3%–14.5%), which made it ideal for in vivo extraction in fish muscle. The as-prepared MIL-101(Cr)-NH 2 fiber was then used to determine antibiotics in the dorsal-epaxial muscle of living fish. Comparing to the traditional solid-liquid extraction (SLE) method, the SPME method showed reduced invasiveness and higher sensitivity than the SLE method. In general, this study explored a convenient, cost-effective and highly sensitive SPME method based on amino modified MOF for in vivo antibiotic detection in fish muscle.
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Nano Research
·
2017
·Vol. 10
·期 10
·3543-3556
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IF 7.354
Pi Yunhong,Li Xiyi,Xia Qibin,Wu Junliang,Li Zhong,Li Yingwei,Xiao Jing
Efficient separation and transfer of photogenerated electron/hole as well as enhanced visible light absorption play essential roles in photocatalytic reactions. To promote the photocatalytic reduction of Cr(VI), a toxic heavy metal ion, multiwalled carbon nanotube (MWCNT) was introduced as an electron acceptor into NH 2 -MIL-68(In). This led to the growth of a willow leaf-like metal-organic framework (MOF) on an MWCNT backbone forming MWCNT/NH 2 -MIL-68(In) (PL-1), which showed a highly efficient transfer of photogenerated carriers. Moreover, MWCNT incorporation introduced more mesopores for Cr(VI) diffusion and enhanced the visible light adsorption without lowering the conduction band position. As a result, the photocatalytic kinetic constant of PL-1 was found to be almost three times higher than that of the parent NH 2 -MIL-68(In). Thus, growing MOFs on MWCNTs provides a facile and promising solution for effective remediation of environmental pollution by utilizing solar energy. This work provides the first example of using MWCNT/MOF composites for photocatalytic reactions.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
·
IF 12.2
Hongshan Jia,Yingqing Zhan,Fei Zhu,Ximin Chen,Xinyue Duan,Ning Zhang,Jie Liu,Yinlong Li
Nano-structured hydrogel with unique anti-oil fouling property exhibits big advantage in oil/water separation, but its application in complex oily wastewater (contain oils, organic matter, bacteria, etc.) cleanup is hampered by the insufficient capabilities in multi-antifouling and synergistic treatment. Herein, we constructed the amino-rich NH 2 -AgBiS 2 /PANI (polyaniline)-g-C 3 N 4 based multi-functional hydrogel functional layer onto the polyacrylonitrile (PAN) fiber membrane via polyphenol-mediated chitosan gelation and vacuum-assisted self-assembly techniques. The unique honeycomb-like structure and super-wetting feature synergistically contributed to the powerful oil resistance and flux breakthrough of composite membrane. Such membrane achieved superior permeability (up to 3558 L −1 m −2 h −1 ) for various SDS-stabilized oil-in-water emulsions and remarkable synergistic treatment efficiency of multicomponent pollutant-oil-water emulsion. The rational design of hydrogel layer on membrane surface intensified the photo-response ability and multiple electron transport channels, which offered the favorable photocatalytic self-cleaning performance towards degradation of organic dyes. According to the free radical quenching and EPR experiments, the photocatalytic mechanism was proposed. In addition, the inhibition rate of E. coli could reach 100 % under illumination of 24 h. Therefore, the integration of ultra-low oil adhesion, photocatalytic self-cleaning, and antibacterial features endows membrane with exceptional multiple anti-fouling performance, exhibiting unique advantages over traditional membranes in handling complex membrane fouling issues.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Yongfeng Liu,Lijuan Ding,Ang Yan,Jianteng Wei,Yi Liu,Yuzhong Niu,Rongjun Qu
To achieve simultaneous adsorption removal of anionic and cationic dyes, UiO-66-NH 2 @Dodecyl functionalized with dodecyl (long-chain alkane) and UiO-66-NH 2 @PEI modified by polyethyleneimine (PEI) (containing multiple amino groups) were facilely fabricated by post-synthesis functionalization strategy, and characterized systematically. UiO-66-NH 2 @Dodecyl and UiO-66-NH 2 @PEI both showed higher adsorption capacities for Congo red (458.2 and 583.4 mg/g) and methylene blue (218.0 and 286.3 mg/g). Adsorption kinetic and isotherm curves could be simulated best by pseudo-second-order kinetic model and Langmuir isotherm model, respectively. Under coexistence of inorganic salts and alkalinity, it was beneficial to improve adsorption capacities. Adsorption capacity of UiO-66-NH 2 @PEI with multiple amino groups was higher than UiO-66-NH 2 @Dodecyl at the same experimental conditions, indicating that hydrogen bonding had greater influence on adsorption efficiency. And UiO-66-NH 2 @Dodecyl and UiO-66-NH 2 @PEI had better stability. Hydrogen bonding, π-π conjugation, electrostatic interaction and van der Waals force were main adsorption driving forces. The results could provide theoretical and technical help for simultaneous adsorption removal of anionic and cationic dyes.
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Yongxin Liu,Haohong Lai,Pingtao Ming,Pengsheng Chen,Shumei Wang,Haiyun Zhai
The accumulation of the deoxynivalenol (DON) in the human body poses a significant health risk that is often overlooked, and we urgently need an ultra-sensitive rapid detection platform. Due to the porosity of NH 2 -MIL-101@MoS 2 , an increased loading of toluidine blue (TB) serves to create a signal reference. Cobalt@carbon (CoC) derived from metal organic frameworks was combined with NH 2 -MIL-101(NH 2 -MIL-101@CoC) to form an enzyme-free Nanoprobe (Apt-pro) with significant catalytic properties. The ratio (I BQ /I TB ) was changed by varying the electrochemical signal of benzoquinone (BQ) (I BQ ) and the amount of TB deposition (I TB ). This aptasensor was successfully applied to detect DON in malt and peach seed , which exhibited a great linear range from 1 fg/mL to 10 ng/mL and low detection limit of 0.31 fg/mL for DON.
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REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Ziheng Zhao,Chunfan Xu,Liang Yu,Huimin Liu,Ru Zhou,Min Hao,Chi-Min Shu,Juncheng Jiang
High-density polyethylene (HDPE) composites are made by melt blending HDPE with MIL-53(Fe), amino-functionalized NH 2 -MIL-53(Fe), aluminum diethyl hypophosphite (ADP), and expandable graphite (EG). The experimental disclosed showed that the aminated NH 2 -MIL-53(Fe) could improve residual carbon quality and exert a better flame retardant effect than MIL-53(Fe). When 25 wt% of EG/ADP/NH 2 -MIL-53(Fe) was added and the ratio of EG to ADP/ NH 2 -MIL-53(Fe) was 1:1, HDPE/EG/ADP/NH 2 -MIL-53(Fe) composites could achieve a limiting oxygen index of 31.1 %, which passed UL-94 testing and was rated V-0. This results in a considerable improvement in flame retardant efficiency as the peak heat release rate was lowered by 83.4 % and the total heat release was reduced by 35.8 % when compared to the pure HDPE material. Therefore, NH 2 -MIL-53(Fe)/ADP/EG synergistic flame retardancy can lead to high flame retardancy efficiency in HDPE. This provided a new potential direction for the preparation of highly efficient flame retardants.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Ying Zhang,Tianya Cao,Baoqing Bai,Xu Jing,Ligang Yu,Jinhua Zhang,Tao Bo,Huilin Liu,Ying Gu,Yukun Yang
The hazard of diethylstilbestrol (DES) towards human health underscored the imperative for highly sensitive and rapid analytical technologies. Herein, a molecularly imprinted electrochemical sensor (MIECS) was innovatively constructed by incorporating the Pt nanoparticles (PtNPs)-decorated MXene/NH 2 -UiO-66 into molecularly imprinted polymer (MIP/MXene/NH 2 -UiO-66/PtNPs) for ultra-sensitive and rapid detection of DES. The introduction of NH 2 -UiO-66 effectively prevented the restacking of MXene and with the synergistic effect of PtNPs, the electrical conductivity of the sensor was significantly enhanced. MIP/MXene/NH 2 -UiO-66/PtNPs-based MIECS not only exhibited excellent electrical conductivity but also possessed the specific cavity to recognize DES. Under optimal experimental conditions, the MIP/MXene/NH 2 -UiO-66/PtNPs-based MIECS exhibited a good relationship with the concentration of DES over a wide range of 1 × 10 −11 –1 × 10 −4 mol L −1 and an extremely low detection limit (1.19 × 10 −12 mol L −1 ). This study demonstrates the judicious design of ternary composite via hetero-interface engineering in the construction of MIECS, providing a new idea for electrochemical sensing.
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MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Yanan Dong,Tianding Hu,Manoj Pudukudy,Hongying Su,Lihong Jiang,Shaoyun Shan,Qingming Jia
In this paper, the effect of conventional solvothermal and a microwave-assisted method for the synthesis of MIL-101(Fe) and NH 2 -MIL-101(Fe) as adsorbents for the removal of tetracycline in wastewater is reported for the first time. The results had shown that the microwave treatment led to a significant reduction in the material synthesis time, which greatly saved the energy. It was also found that the microwave-assisted synthesized material exhibited small particle size, high specific surface area and better adsorption capacity. The introduction of amino group further enhanced the adsorption capacity of MIL-101(Fe). The adsorption capacity of MIL-101(Fe) and NH 2 -MIL-101(Fe) samples for tetracycline adsorption by microwave assisted synthesis method reached up to 332 mg/g and 378 mg/g, respectively. Moreover, the adsorption isotherm was well-fit with Freundlich model, indicating a multilayer adsorption . The kinetic studies indicated that the reaction followed pseudo second-order reaction kinetics with a best fit to the theoretical value. Due to the higher adsorption efficiency and lower energy consumption of the synthesis, the as-prepared microwave assisted materials could be used as potential adsorbents for different pollutants in wastewater.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhu Gao,Jiaxing Wang,Yaseen Muhammad,Peng Hu,Yang Hu,Zhe Chu,Zhongxing Zhao,Zhenxia Zhao
Competitive adsorption of volatile organic compounds (VOCs) under high humidity is a critical but challenging issue in the applications of metal–organic frameworks (MOFs). In this work, hydrophobic-shell structured NH 2 -MIL(Ti)-125@mesoporous carbon composite was designed to enhance selective adsorption towards VOCs under humid conditions via confined growth strategy. Ti-clusters were first anchored into pores of ordered mesoporous carbon (OMC), and then confined grown into NH 2 -MIL(Ti)-125 via ‘ship-in-the-bottle’ approach. Hydrophobic shell of OMC concurrently protected the adsorption sites on NH 2 -MIL(Ti)-125 from H 2 O occupation and enhanced affinity towards non-polar toluene. Moreover, the resulting composited supplied abundant diffusion channels for toluene thereby accelerated the mass transfer though mesopores (OMC) and micropores (MOFs). As expected, the hydrophobic-shell NH 2 -MIL(Ti)-125@OMC composite efficiently enhanced hydrophobic property and toluene adsorption affinity. It obtained a dramatical increase in toluene adsorption capacity (3.86 mmol/g at 0.001 P / P 0 ) about 7.4 times of NH 2 -MIL(Ti)-125, and a 29% decrease in water vapor adsorption capacity (0.30 g/g at 1 mbar), which much superior than many reported expensive adsorbents. In addition, the composite induced more confined micropores to mesopores interconnected structure in MIL(Ti)@OMC Ti , and hence facilitated toluene diffusion. The toluene rate constant of pseudo-second-order adsorption ( k a ) on the MIL(Ti)@OMC Ti was up to 0.12 g/(mmol∙min), which was 1.2–2.0 times higher than those of the MIL(Ti) species. Moreover, breakthrough curve indicated that MIL(Ti)@OMC Ti showed 1.5 times of toluene working capacity with faster diffusivity at 80% RH compared to pure NH 2 -MIL(Ti)-125, while the latter exhibited much lower value of Q w / Q e than that of the former. This work provides a novel composite strategy for hydrophobic MOFs construction, and deeper understanding for VOCs/H 2 O competitive adsorption on MOFs composites in large scale applications.
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BIOSENSORS & BIOELECTRONICS
·
2019
·
IF 9.518
Jinglong Fang,Guanhui Zhao,Xue Dong,Xuan Li,Juncong Miao,Qin Wei,Wei Cao
An electrochemiluminescence (ECL) analytical platform was proposed for ultrasensitive detection of amyloid-β proteins (Aβ) based on the ECL resonance energy transfer (ECL-RET). In this work, gold nanoparticles-functionalized graphitic carbon nitride nanosheets (g-C 3 N 4 @Au NPs) and palladium nanoparticles-coated Metal organic framework (Pd NPs@NH 2 -MIL-53) were synthesized, which were as ECL donor and ECL acceptor respectively. A strong cathode ECL emission was obtained from the g-C 3 N 4 @Au NPs when used K 2 S 2 O 8 as its co-reactant. Here, Au NPs not only was used as an accelerator to enhance and stabilize the ECL signal, but also a connector for attaching Aβ antibody. In addition, NH 2 -MIL-53(Al) was selected as a label material for supporting Pd NPs to synergistically increase the intensity and range of UV-visible absorption. The ECL signal of g-C 3 N 4 @Au NPs was intensely decreased when the ECL acceptor probe Pd NPs@NH 2 -MIL-53 was incubated onto the modified GCE by way of the specific recognition. Under the optimal condition, a wide detection range from 10 fg/mL to 50 ng/mL and a low detection limit of 3.4 fg/mL (S/N = 3) were obtained. In consideration of favorable specificity, stability and reproducibility, the proposed method was successfully applied for Aβ detection in actual human serum samples and could be a potential analytical tool for sensitive molecular trace detection in clinical analysis.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2019
·Vol. 411
·期 7
·1453-1465
·
IF 3.286
Niazi Sobia,Khan Imran Mahmood,Yan Lv,Khan Muhammad Issa,Mohsin Ali,Duan Nuo,Wu Shijia,Wang Zhouping
A rapid and highly sensitive time-resolved fluorescence (TRF)-based aptasensor for simultaneous recognition of mycotoxins ochratoxin A (OTA) and fumonisin B 1 (FB 1 ) was developed using multi-color, Ln 3+ -doped time-resolved fluorescence nanoparticles (TRF-NPs) (NaYF 4 : Ce, Tb and NH 2 -Eu/DPA@SiO 2 NPs) coupled with complementary strand DNA (cDNA) as luminescence probe and aptamers-conjugated amine-functionalized Fe 3 O 4 magnetic nanoparticles (MNPs) act as a capture probe. Under the optimized conditions, the time-resolved fluorescence intensities at 544 and 618 nm corresponded with Tb 3+ and Eu 3+ , respectively, were used to measure FB 1 ( Y = 19,177.1 + (− 12,054.4) x , R 2 = 0.9917) and OTA ( Y = 4138.8 + (− 11,182.6) x , R 2 = 0.9924), respectively. The limits of detection (LODs) for FB 1 and OTA were 0.019 pg mL −1 and 0.015 pg mL −1 , respectively, which were much lower than previously described methods for simultaneous recognition of mycotoxins OTA and FB 1 while detection range varied from 0.0001–0.5 ng mL −1 . This aptasensor was effectively applied to quantity FB 1 and OTA in maize samples and results were compared with ELISA method. This is the first reported time-resolved fluorescence (TRF)-based aptasensor to detect two agriculturally important toxins in the maize. The developed aptasensor has potential to be used for detection of toxins in food safety fields.
Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiang Chang,Ying Qin,Weimin Guo,Jingyuan Zhang,Kuo Zhang,Jianhua Zheng,Lijian Sun,Qiu Fu
The facile and eco-friendly fabrication of a fabric with remarkable flame retardancy, anti-ultraviolet (UV), and superhydrophobic properties is of significant interest for multitask requirements. In this regard, herein, a nonfluorine, facile, and green method is reported for in situ synthesis of metal-organic frame (NH 2 -MIL-53(Al)) on hemp fabric (HF) for the preparation of multifunctional textiles. A homogeneous and compact coating of NH 2 -MIL-53(Al) crystals was deposited on HF, followed by modification with triethoxyoctylsilane (TEOS) to manufacture superhydrophobic NH 2 -MIL-53(Al)@hemp fabric (SM(Al)HF-9), significantly enhancing its water stability. The SM(Al)HF-9 exhibited superior superhydrophobicity properties, with a water contact angle (WCA) up to 156°. Furthermore, the surface of SM(Al)HF-9 cannot be adhered by dye solution and powder, indicating its good self-cleaning and anti-fouling abilities. The SM(Al)HF-9, characterized by a porous structure, effectively separates tetrachloromethane and n-hexane from water mixtures with a separation efficiency exceeding 97 %. The SM(Al)HF-9 has excellent UV-blocking properties, and the UV protection factor is as high as 105.44. Encouragingly, the SM(Al)HF-9 exhibited outstanding flame retardancy, as demonstrated by its self-extinguishing capability and a substantially improved limiting oxygen index (LOI) of 32.4 %. In comparison to raw HF, the peak heat release rate (PHRR) and total heat rate (THR) of the modified HF are reduced by 76.15 % and 54.32 %, respectively. Meanwhile, the NH 2 -MIL-53(Al) has a significant advantage over other MOFs (e.g., ZIF-67, Ce-MOF, Ag-MOF, Fe-MOF and MIL-53(Al)) in improving the flame retardancy of HF. The highly efficient flame-retardant, anti-UV, and superhydrophobic fabric is promising in home and public decoration, and fire protection fields.
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