Biosensors-Basel
·
2024
·Vol. 14
·期 10
·512
·
IF 4.9
Jiawen Fan,Junjie Qi,Jingkun Li,Fuwei Pi
Arginine has been widely applied in the food industry as coloring agents, flavoring agents, and nutritional fortifiers. It is also one of the major components of feed additives. Currently, methods for the highly selective detection of arginine remain absent. For accurate and sensitive detection of L−arginine, a novel ratiometric fluorescence assay based on Ru@UiO-66-NH2was developed and demonstrated in this study. Under optimized detection conditions, the limit of detection (LOD) of this assay for L-arginine was 2.32 μM, which is superior to most assays reported to date. Meanwhile, Ru@UiO-66-NH2showed good stability within 30 days, demonstrating the wide applicability of the proposed assay. The spike-and-recovery rates of the proposed assay for L-arginine in real samples (e.g., tea, grape juice, and serum) were 84.27–113.09%. Overall, the proposed assay showed high sensitivity, good reproducibility, and excellent stability in the detection of L-arginine in both buffer and real samples.
研究领域:
分析化学
·
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2025
·
IF 5.1
Zuyao Fu,Lingfeng Yang,Zhaoyang Ding,Jing Xie
Immobilized enzymes play a crucial role in analytical sensing due to their exceptional stability and considerable commercial importance. In this study, a stable Zr-based metal–organic framework (UiO-66-NH2) was prepared as an immobilization platform for horseradish peroxidase (HRP) through covalent binding. HRP@UiO-66-NH2 retained 75% of its activity after 10 cycles. Subsequently, a colorimetric/fluorometric dual-mode sensing strategy using HRP@UiO-66-NH2 was developed for nitrite detection. HRP@UiO-66-NH2 facilitated the transformation of the non-colored compound 3,3′,5,5′-tetramethylbenzidine (TMB) into its blue oxidized form. When nitrite is added, oxidized TMB (ox-TMB) specifically engaged with nitrite (NO2−) to generate diazotized TMB, leading to a color shift from blue to yellow. Concurrently, NO2− reacted with the amino groups of HRP@UiO-66-NH2, forming diazonium compounds and suppressing the fluorescence of HRP@UiO-66-NH2. The limits of detection were 0.21 μM and 0.19 μM for the colorimetric and fluorometric strategies, respectively. Furthermore, a portable kit for detecting nitrite was created by integrating gelatin with HRP@UiO-66-NH2. The kit could visually identify nitrite from 10–400 μM in colorimetric mode and 0–400 μM in fluorometric mode. This method provides an innovative approach for nitrite sensing, paving the way for new research into multifunctional immobilized enzymes and their potential uses in biochemical sensing applications.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 34
·14389-14400
·
IF 3.288
Wenyi Yu,Qianwei Liang,Yuwei Yin,Junjie Geng,Wei Chen,Xuanyi Tan,Hanjin Luo
Arsenite (As(III)) is more toxic and more difficult to remove from water than arsenate (As(V)). A new nano core–shell-structured K-OMS-2@UiO-66 (K-OMS-2, formula KMn8O16·nH2O) was fabricated via a facile one-step oxidation–coprecipitation method for enhanced As(III) removal. Results showed that the maximal adsorption capacity of As(III) achieved was 180.10 mg g−1. The as-synthesized K-OMS-2@UiO-66 adsorbent functions excellently across a broad pH range of 1.5 to 10.0, and the residual concentrations of As(III) can drop under 10.0 μg L−1. Based on XPS and FTIR measurements, it is proposed that the removal mechanism was mainly controlled through a synergistic interaction of surface complexation and hydrogen bonding. As(III) was sorbed onto the surface of the sorbent by Zr–O bonds and Mn–O bonds. Mn(IV) and Mn(III) in K-OMS-2@UiO-66 effectively oxidized As(III) to As(V). Then, some negatively charged As(V) were adsorbed at the positive sites of the adsorbent through electrostatic attraction, while others formed bidentate complexes with the Zr–O bonds. This study develops an attractive sorbent for As(III) removal from contaminated water and has a facile and low-cost synthesis process, good As(III) sorption performance, and reusability.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ECS Journal of Solid State Science and Technology
·
2021
·Vol. 10
·期 10
·106011
·
IF 2.07
Jie Yang,Bo Ruan,Wang Ni,Lung-Chang Tsai,Ning Ma,Dean Shi,Tao Jiang,Fang-Chang Tsai
Carbon dots (CDs) has been widely applied in LED diodes, sensing and bioimaging. However, the fluorescence property of CDs is limited because of the solid-state aggregation-caused quenching (ACQ). Metal-organic frameworks (MOFs), due to their high surface area, porosity and tunable pore size, are considered suitable hosts to inhibit the ACQ of CDs. Herein, the Zr-MOFs (UiO-66-(OH)2) is chosen as a host to encapsulate CDs. The dual-emitting CDs@MOFs system is constructed, which overcomes the problem of solid-state aggregation-caused quenching of carbon dots to gain the blue-emitting CDs@UiO-66-(OH)2. With the volume of CDs increased, the fluorescence of CDs@UiO-66-(OH)2 has changed simultaneously. When the volume reaches 3 ml, CDs@UiO-66-(OH)2 begin to cause fluorescence quenching. The correlated color temperatures (CCT) of CDs@UiO-66-(OH)2 are transformed from cold light to warm light. That can be further researched in electroluminescent diodes, ion-sensor, environmental monitoring, biological imaging and developments in other related biochemical fields.
研究领域:
材料科学
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生物成像
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传感技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yuling Ma,Airong Li,Cheng Wang,Xingbo Ge
Phosphotungstic acid (H 3 PW 12 O 40 , HPW) exhibits a good desulfurization performance towards the oxidative desulfurization (ODS) of oil-derived fuels. However, it presents two drawbacks: a small specific surface area and poor recovery. In this work, HPW was loaded on the support UiO-66 with a stable structure and large specific surface area, and a family of HPW@UiO-66 catalysts was prepared. Based on the structure and property analyses of powder FT-IR, ICP-OES, XRD, SEM, TG and BET, 0.5-HPW@UiO-66 with defects possessed a high crystallinity, regular morphology, stable structure and dispersed HPW clusters. The removal efficiency of DBT reached 100% and was maintained at 94.70% after 12 times of repeated use under the optimal reaction conditions. The results showed that the catalytic performance of HPW@UiO-66 catalyst for model oil desulfurization was improved when the defects existed.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
·
2024
·Vol. 30
·期 3
·377-387
·
IF 3
Ma Yuling,Li Airong,Wang Zhihong,Wang Cheng
There is an urgent need to address sulfur dioxide (SO 2 ) from the burning of fossil fuels, which poses a serious hazard to the surrounding environment due to its emission. In this work, UiO-66-type metal–organic framework materials (MOFs) were prepared by hydrothermal method and applied to flue gas desulfurization. Through characterization analysis, it was found that UiO-66 sample had high crystallinity and good thermal stability. Besides, UiO-66 sample had a large specific surface area (1423 m 2 /g) and a large pore volume (0.69 cm 3 /g). In the desulfurization experiments of SO 2 /CO 2 /O 2 /N 2 gas mixture (0.3/10.0/5.5/84.2 vol.%), UiO-66 had a breakthrough time of 137.6 min/g for SO 2 , the high selectivity of SO 2 /CO 2 (36.0), and strong acid resistance. Besides, the adsorption thermodynamic analysis can confirm that the adsorption process of UiO-66 for SO 2 was a combination of physical adsorption and chemical adsorption. At 1.0 bar and 298 K, the adsorption capacity of SO 2 on UiO-66 reached 8.12 mmol/g.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Shenghui Ning,Fuchao Yang,Guangyi Tian,Dongyin Li,Zhiguang Guo
As the pollution of oily wastewater becomes more and more serious, it has a great negative impact on the ecosystem and human health. How to achieve efficient oil-water separation has become a common ecological problem all over the world. Therefore, it is extremely significant to develop innovative and efficient oil-water separation membranes. Past studies have shown that the metal-organic framework material UiO-66 (Zr), which has free carboxyl groups, is not only hydrophilic but also has good stability. Inspired by this, an ingenious method for a polydopamine (PDA) and metal-organic skeleton UiO-66(Zr) coating anchoring on cotton fabric surface was proposed, and the final product was denoted as CF-PDA@CS@UiO-66-COOH fabrics. Particularly noteworthy is that the separation efficiency of CF-PDA@CS@UiO-66-COOH for various organics exceeded 99.83 %, the water flux was achieved to 100744.5 L/(m 2 ·h). After 20 cycles, the separation efficiency exceeded 99.81 % and the water flux always surpassed 75067.9 L/(m 2 ·h). In addition, the prepared membranes were able to maintain excellent underwater superoleophobic properties even under acidic or alkaline environmental conditions or after 50 sandpaper abrasion cycles. And it also has excellent self-cleaning and anti-fouling. These excellent properties are due to the strong anchoring between CF, PDA, CS and UiO-66-COOH. This facile and scalable functional fabric could be applied to a wide range of oil-water separation and facilitate the development of high flux separation devices.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Tian Si-Yu,Ding Zhu,Yao Mu-Lan,Liu Si-Mian,Hou Xiang-Yang,Tang Long,Yue Er-Lin,Wang Xiao,Wang Ji-Jiang
A three-dimensional UiO-67-BDA with various pore structures and abundant active binding sites is constructed, and Fe@UiO-67-BDA composites with electrochemical sensing and recognition performance were further prepared by successfully loading Fe 3+ ions. The different modified electrodes (Fe@UiO-67-BDA/GCE, UiO-67-BDA/GCE, Fe/GCE) and the bare electrode (GCE) were also characterized in terms of basic structure and electrochemistry, and it was found that the basic structure and electrochemical performances of Fe@UiO-67-BDA/GCE were better than those of the remaining three electrodes, with good selectivity, reproducibility and stability. And the Fe@UiO-67-BDA/GCE sensor with good electrochemical performance was constructed under the optimal working potential (E pa = 0.59 V) and experimental conditions, which was utilized to rapidly and accurately detect heavy metal ions Hg 2+ by the DPV method, with a detection limit of up to 1.642 × 10 −9 M. In addition, the electrochemical behavior mechanism of the Fe@UiO-67- BDA/GCE sensor was investigated. Finally, the sensor was applied to detect cosmetic heavy metal ions, and the experimental results also showed high reliability and practicality. Therefore, MOFs composite material is applied to the field of electrochemistry, because of its simple operation technology, fast detection speed and high sensitivity, so that it has a greater application prospect.
研究领域:
分析化学
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环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2024
·
IF 1.1
Zhiwei Zhang,Yilin Ma,Encheng Liu,Junjie Cheng,Fengfeng Chen,Bin Ling,Ningyu Di,Junkuo Gao
Curing agents for epoxy resin (EP) are one of the most important branches in the polymer materials field due to their enormous potential in many fields, but constructing them in a well-controlled curing temperature remains challenging. Herein, a novel curing agent is constructed by the zirconium metal-organic framework (UiO-66) and [P 4442 ] 2 [IDA] through an impregnation method. [P 4442 ] 2 [IDA]@UiO-66 is utilized as a functional nanofiller and curing agent to construct the [P 4442 ] 2 [IDA]@UiO-66/EP nanocomposites. The chemical structures of [P 4442 ] 2 [IDA]@UiO-66 were investigated by XRD, SEM, DSC, and TG characterizations. The various [P 4442 ] 2 [IDA]@UiO-66 with different loading amounts of [P 4442 ] 2 [IDA] were used to investigate the curing behaviors of the EP-51. The DSC results confirm that the curing temperature of the [P 4442 ] 2 [IDA]@UiO-66/EP is higher than that of [P 4442 ] 2 [IDA]/EP. In addition, the kinetic parameters and the activation energy of the curing reaction were acquired according to the fitting of Kissinger equation and Ozawa equation. The drying time of [P 4442 ] 2 [IDA]@UiO-66/EP system at 40 °C was enhanced 17 times compare to that of [P 4442 ] 2 [IDA]/EP system. This study opens new avenues for the rational design of EP nanocomposites by employing ionic liquids@MOFs composite materials as curing agent for wide engineering applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xiaoyao Wang,Haizhi Huang,Siyao Zhong,Xuping Shentu,Zihong Ye,Xiaoping Yu
Fenpropathrin residues in grain are potentially harmful to humans. Therefore, a fluorimetric lateral flow immunoassay using a zirconium-based organic skeleton (UiO-66) as a signal marker was developed for detecting fenpropathrin. Herein, carboxymethyl chitosan (CMCS) was used to modify UiO-66 and improve its water solubility to facilitate stable binding with sodium fluorescein (NaFL). This resulted in formation of a new fluorescent probe that is more suitable for lateral flow immunoassay (LFIA). The materials were characterized via electron microscopy , Fourier-transform infrared spectroscopy, and powder X-ray diffraction. CMCS and NaFL were successfully bound to UiO-66. Under optimized conditions, the constructed NaFL/UiO-66@CMCS-LFIA exhibited a good linear relationship within the range of 0.98–62.5 μg/L, with a detection limit of 3.91 μg/L. This probe was fourfold more sensitive than traditional colloidal gold nanoparticle-based LFIA. Finally, NaFL/UiO-66@CMCS-LFIA was successfully applied to detect fenpropathrin in wheat and maize samples. The detection limit was 1.56 μg/kg and recoveries ranged from 96.58 % to 118.56 %. This study provides a sensitive, stable, and convenient method for the rapid detection of pesticide residues .
研究领域:
分析化学
·
食品安全
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yongchao Wang,Qing Yang,Fangli Yi,Ruowei Lu,Yanxia Chen,Cheng Liu,Xinyu Li,Cuijuan Wang,Hongjian Yan
The poor stability and low catalytic activity of NH2-UiO-66 in basic solutions require the reactions to be conducted in acidic solutions, which seriously hinders its potential photocatalytic application. Herein, we report that NH2-UiO-66 coated with two-dimensional covalent organic frameworks (COFs) via imine bond connection presents not only high photocatalytic activity but also high stability and adaptability to the solution environment. The NH2-UiO-66/COF hybrid material was fabricated through the Schiff base reaction of NH2-UiO-66 with 4,4′,4″-(1,3,5-triazine-2,4,6-triyl)trianiline (TAPT) and 2,4,6-triformylphloroglucinol (TP). The hybrid material showed high stability in an alkaline environment, with only 4.7% of NH2-UiO-66 decomposed after the photocatalytic reaction. The optimum photocatalytic H2 evolution rate was 8.44 mmol·h–1·g–1 when triethanolamine was used as an electron-donating agent. The results presented here illustrate the possibility for effectively improving both the photocatalytic performance and stability of NH2-UiO-66 by coupling with COFs.
研究领域:
材料科学
·
光催化领域
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Xia Gao,Guangming Sun,Xinke Wang,Xiaodong Lin,Shuo Wang,Yaqing Liu
As a vital signaling molecules, hydrogen sulfide (H 2 S) with abnormal concentrations is correlated with many diseases. Therefore, development of novel assays for quantitative and selective detection of H 2 S is important. Herein, we synthesized a host-guest metal-organic framework (MOF), i.e., RhB/UiO-66-N 3 (here, RhB means rhodamine B) by a mildly and simply way, as reaction-based ratiometric fluorescent nanosensor for selective detection and intracellular imaging of H 2 S. In the presence of H 2 S, the RhB/UiO-66-N 3 exhibits dual emissions at 425 nm and 575 nm under irradiation of single excitation wavelength. The blue fluorescence at 425 nm (F 425 ) is attributed to the H 2 S-mediated biorthogonal reduction of azide to amine, and the red fluorescence at 575 nm (F 575 ) originating from RhB is served as an internal reference. With increasing concentrations of H 2 S, the intensity of blue fluorescence increases while the intensity of red fluorescence has no obvious change. With F 425 /F 575 as readout, turn-on and ratiometric fluorescence detection of H 2 S was achieved with good selectivity and sensitivity. Interestingly, RhB/UiO-66-N 3 can be tuned from microscale to nanoscale sizes, and endows high stability under physiological conditions. The exogenous and endogenous H 2 S in live cells has been further targeted and imaged, demonstrating its considerable potential for extensive applications.
研究领域:
生物化学
·
医学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）